US3465346A - Circularly-polarizing spiral antenna having sawtooth conductors - Google Patents
Circularly-polarizing spiral antenna having sawtooth conductors Download PDFInfo
- Publication number
- US3465346A US3465346A US775078A US3465346DA US3465346A US 3465346 A US3465346 A US 3465346A US 775078 A US775078 A US 775078A US 3465346D A US3465346D A US 3465346DA US 3465346 A US3465346 A US 3465346A
- Authority
- US
- United States
- Prior art keywords
- antenna
- sawtooth
- conductor
- conductors
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
- H01Q9/27—Spiral antennas
Definitions
- the antenna of this invention utilizes surface-mounted electrical-energy conductors such as are typically printed on or otherwise bonded to a dielectric support means.
- Each conductor is provided with a sawtooth geometrical configuration, in whole or in part, to significantly reduce the dielectric means support area requirement necessary to maintain a given antenna operating bandwith capability or alternately to effect a low-frequency extension of the antenna operating bandwith capability achieved within a specified dielectric means support area.
- the antenna conductors are typically'electrically energized from a conventional coaxial balun feed. Also, known conductor spacing, perimeter maximizing, end-loading, and dielectric confinement techniques may be utilized in combination with the instant invention, if desired.
- FIG. 1 is a plan view of a fiat double-wound spiral reference antenna having a conventional straight-line conductor configuration
- FIG. 2 is a sectional view taken at line 2-2 of FIG. 1;
- FIG. 3 is a plan view of an antenna embodying the instant invention.
- FIG. 4 is a plan view of an alternate embodiment of an antenna incorporating the instant invention.
- FIG. 5 is an enlarged plan view showing the conductor configuration of the antenna of FIG. 4 in greater detail
- FIG. 6 is a table identifying different wave propagation velocity constants that are obtained with conductors having various illustrated sawtooth conductor configurations.
- FIG. 7 graphically illustrates antenna operating performance advantages that have been obtained by the practice of this invention.
- FIG. 1 illustrates a reference conventional circularlypolarizing antenna 10 basically comprised of doublewound spiral conductors 11 and 12 secured to flat dielectric board 13.
- Conductors 11 and 12 are typically con- Patented Sept. 2, 1969 'ice nected at their center terminals 14 to a conventional coaxial feed (not shown).
- the outer terminals 15 of conductors 11 and 12 frequently are coupled to resistanceloading circuits to improve antenna low frequency operating characteristics in a conventional manner but generally with reduced antenna gain.
- the reference antenna 10 utilizes conductors 11 and 12 having a conventional straight-line configuration for each leg of the several illus trated turns.
- Antenna embodiment 16 of FIG. 3 utilizes a doublewound spiral conductor arrangement wherein the conductors 11 and 12 each have a uniform sawtooth configuration such as 20 (FIG. 6) throughout. Corner details 18 for each conductor are provided to maintain uniform spacing between adjacent conductor turns at the antenna corner regions. Antenna 16, having the conductor spacing and number of conductor turns of antenna 10', develops a significant extension to the low-frequency end of the antenna operating bandwidth. (See FIG. 7). The FIG. 3 embodiment, however, does not have the high-frequency operating capability associated either with reference antenna 10 or antenna embodiment 17.
- FIG. 4 illustrates the relative support area requirement of a flat double-wound spiral antenna 17 in accordance with the invention and having the same acceptable circularly-polarized field and specified operating bandwidth characteristics as antenna 10.
- the antenna embodiment of FIG. 4 requires only from one-third to one-fourth the corresponding conductor support area as antenna 10 for the same number of double-wound conductor turns.
- the innermost conductor turns of conductors 11 and 12 are provided with a straight-line configuration 28 in a conventional manner.
- the outermost two legs of the outermost turn of each of conductors 11 and 12 may be provided with a sawtooth geometrical configuration such as 20 of FIG. 6.
- the intermediate legs of the ditferent conductor turns have the different sawtooth configurations 21 through 27 with successively decreasing wave propagation velocity constants as indicated by the reference numerals of FIG. 5 and by the corresponding configurations of FIG. 6.
- Such intermediate legs in eifect provide for a gradual transition in waveform propagation velocity in the conductor region from straight-line configuration 28 through sawtooth geometrical configuration 20.
- the outermost turn of each of conductors 11 and 12 in antenna 17 has a total length corresponding to the perimeter length of the corresponding outermost straight-line conductor turns 11 and 12 in the FIG. 1 antenna. Normally, it is preferred that uniform spacing between conductors *be maintained throughout.
- FIG. 6 Details regarding different sawtooth geometrical configurations for conductors 11 and 12 are provided in FIG. 6.
- the different sawtooth configurations 20 through 27 vary in slope as to each sawtooth leg. The slope varies from a ratio of 4:2 for configuration 20 to a ratio of :2 for configuration 28 in abscissa increments of one-half.
- Configuration 28 is a straight-line configuration of Zero slope.
- Additional configurations 29 through 31 for the antenna conductors have the basic characteristics of a sawtooth configuration. However, small radii are utilized to join the different sawtooth leg increments. Velocity constant values computed from actual standing wave field measurements made with respect to configurations through 31 correspond closly to the calculated values of the table.
- FIG. 7 provides a graphical illustration of the performance capability that may be obtained with an antenna incorporating this invention in comparison to an antenna such as conventional antenna 10.
- FIG. 7 plots on-axis axial ratio measurements taken for antennas having the conductor configurations of antennas 10 and 16 and having equal support area dimensions of approximately 3% square. Measurements relating to a base frequency 1 were taken over a frequency range extending to approximately 3.5 f. An axial ratio of ten decibels or less for the circularly-polarized radiated field was established as acceptable antenna performance.
- curve 32 for the antenna 10 conductor configuration, cutoff for a desired axial ratio of less than ten decibels occurs approximately midway between 2.5 f and 3.0 f, such cutoff frequency essentially begin correlated to a wavelength determined by the spiral conductor perimeter turn diameter.
- Curve 33 illustrates the actual performance of an antenna 16 of similar dimensions to the antenna of curve 32 but with a conductor sawtooth geometric configuration throughout. The cut-off frequency has been reduced to approximately 2 f by the invention with a reduced axial ratio in comparison to curve 32 throughout the remainder of the operating bandwith of interest.
- the instant invention is illustrated as applied to a flat circularly-polarizing antenna having double-wound spiral conductors of uniform spacing from the point of feed to antenna perimeter.
- the instant invention is also considered to have application to other conductor arrangements including equiangular, conical, Archimedean spiral, and scimitar configurations.
- Conventional techniques such as perimeter squaring, lumped or distributed resistance end loading, and conductor dielectric imbedment may be utilized with the invention to further antenna operating performance for a specified operating bandwidth and axial ratio.
- a pair of interlaced multiple-turn spiral conductor elements secured to said dielectric support means support surface area throughout each current conducting path from said pair of feed terminals to said pair of perimeter terminals and having (1) a first section comprised of adjacent spiral conductor element turns respectively coupled at one extreme to said pair of feed terminals and provided with geometric configurations that propagate traveling waves from said electrical currents at frequency f along said first section spiral conductor element turns at a velocity approximately 1.0 times a reference traveling wave propagation velocity along a conductor of straight-line geometric configuration, (2) a second section comprised of adjacent spiral conductor element turns respectively coupled at one extreme to said pair of perimeter terminals and provided with sawtooth geometric configurations that propagate traveling waves from said electrical currents at frequency f along said second section conductor element turns at a velocity substantially less than said reference traveling wave propagation velocity along a conductor of straight-line geometric configuration, and (3) a transition section comprised of adjacent spiral conductor element turns respectively coupled at opposite extremes to the other extremes of said first and second section conductor element turns and provided with sawtooth
- transition section is comprised of successively different conductor element turns of different sawtooth geometric configurations that propagate traveling waves from said electrical currents at successively different frequencies intermediate said frequency and said frequency f along said transition section conductor element turns at corresponding successively different velocities proportionally intermediate said traveling wave propagation velocities along said first and second section conductor elements turns.
- transition section is comprised of successively different conductor element turns of different sawtooth geometric configurations that propagate traveling waves from said electrical currents at successively different frequencies intermediate said frequency f and said frequency f along said transition section conductor element turns at corresponding successively different velocities of approximately 0.97, 0.89, 0.80, 0.71, 0.62, 0.55, and 0.50 proportionally intermediate said traveling wave propagation velocities along said first and second section conductor element turns.
Description
Sept. 2, 1969 W. F. PATTERSON ET AL CIRCULARLYPOLARIZING SPIRAL ANTENNA HAVING SAWTOOTH CONDUCTORS Original Filed May 5, 1967 W l I I 2 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\W VELOCITY TYPE CONFIGURATION CONSTANT v 3V2 2| M 0.50
2'/ so 23 M 0.62
Elfilfi 2 3 (AS FIG.I) 24 M -----sAw TOOTH "5 SPIRAL 25 B 5 32 (AS FIG. 3) 26 0.89 9. I 27 0.97 P- I & o I I I 28 L00 i 5 2: 29 M o as 5 x Q 7' 33 0 I l W 2 Q l f 2 2 2 W Q49 FIG 7 FREQUENCY United States Patent 3,465,346 CIRCULARLY-POLARIZING SPIRAL ANTENNA HAVING SAWTOOTH CONDUCTORS William F. Patterson, Reynoldsburg, Ohio, and Ernesto T. Roland, Silver Spring, Md., assignors to North American Rockwell Corporation Original application May 5, 1967, Ser. No. 636,422. Divided and this application Nov. 12, 1968, Ser. No. 775,078
Int. Cl. H01q N36 US. Cl. 343-895 4 Claims ABSTRACT OF THE DISCLOSURE Cross-references This is a divisional application of application for United States patent Ser. No. 636,422, filed May 5, 1967.
Summary of the invention The antenna of this invention utilizes surface-mounted electrical-energy conductors such as are typically printed on or otherwise bonded to a dielectric support means. Each conductor is provided with a sawtooth geometrical configuration, in whole or in part, to significantly reduce the dielectric means support area requirement necessary to maintain a given antenna operating bandwith capability or alternately to effect a low-frequency extension of the antenna operating bandwith capability achieved within a specified dielectric means support area. The antenna conductors are typically'electrically energized from a conventional coaxial balun feed. Also, known conductor spacing, perimeter maximizing, end-loading, and dielectric confinement techniques may be utilized in combination with the instant invention, if desired.
Summary of the drawings FIG. 1 is a plan view of a fiat double-wound spiral reference antenna having a conventional straight-line conductor configuration;
FIG. 2 is a sectional view taken at line 2-2 of FIG. 1;
FIG. 3 is a plan view of an antenna embodying the instant invention;
FIG. 4 is a plan view of an alternate embodiment of an antenna incorporating the instant invention;
FIG. 5 is an enlarged plan view showing the conductor configuration of the antenna of FIG. 4 in greater detail;
FIG. 6 is a table identifying different wave propagation velocity constants that are obtained with conductors having various illustrated sawtooth conductor configurations; and
FIG. 7 graphically illustrates antenna operating performance advantages that have been obtained by the practice of this invention.
Detailed description FIG. 1 illustrates a reference conventional circularlypolarizing antenna 10 basically comprised of doublewound spiral conductors 11 and 12 secured to flat dielectric board 13. Conductors 11 and 12 are typically con- Patented Sept. 2, 1969 'ice nected at their center terminals 14 to a conventional coaxial feed (not shown). The outer terminals 15 of conductors 11 and 12 frequently are coupled to resistanceloading circuits to improve antenna low frequency operating characteristics in a conventional manner but generally with reduced antenna gain. The reference antenna 10 utilizes conductors 11 and 12 having a conventional straight-line configuration for each leg of the several illus trated turns.
We have discovered that by providing a circularlypolarizing antenna with conductors having, in Whole or in part, a sawtooth geometrical configuration rather than just a straight-line or a uniformly-curved configuration, the operating bandwidth capability of the antenna below cut-oif may be significantly extended for an available conductor support area. Alternately, the support area requirements for a specific antenna operating bandwidth capability below a given cut-oif value can be significantly reduced if the antenna conductors are provided, in whole or in part, with a sawtooth geometrical configuration rather than with just a conventional straight-line or uniformly-curved geometrical configuration. Antenna embodiments 16 and 17 of the drawings involve applications of the instant invention. Details regarding several different sawtooth geometrical configurations 20 through 27 and 29 through 31 having application to the practice of the invention are provided in FIG. 6 and also elsewhere in this description.
FIG. 4 illustrates the relative support area requirement of a flat double-wound spiral antenna 17 in accordance with the invention and having the same acceptable circularly-polarized field and specified operating bandwidth characteristics as antenna 10. The antenna embodiment of FIG. 4 requires only from one-third to one-fourth the corresponding conductor support area as antenna 10 for the same number of double-wound conductor turns. In order to obtain a high-frequency performance capability similar to that of antenna 10, the innermost conductor turns of conductors 11 and 12 are provided with a straight-line configuration 28 in a conventional manner. The outermost two legs of the outermost turn of each of conductors 11 and 12 may be provided with a sawtooth geometrical configuration such as 20 of FIG. 6. The intermediate legs of the ditferent conductor turns have the different sawtooth configurations 21 through 27 with successively decreasing wave propagation velocity constants as indicated by the reference numerals of FIG. 5 and by the corresponding configurations of FIG. 6. Such intermediate legs in eifect provide for a gradual transition in waveform propagation velocity in the conductor region from straight-line configuration 28 through sawtooth geometrical configuration 20. Basically, the outermost turn of each of conductors 11 and 12 in antenna 17 has a total length corresponding to the perimeter length of the corresponding outermost straight-line conductor turns 11 and 12 in the FIG. 1 antenna. Normally, it is preferred that uniform spacing between conductors *be maintained throughout.
Details regarding different sawtooth geometrical configurations for conductors 11 and 12 are provided in FIG. 6. The different sawtooth configurations 20 through 27 vary in slope as to each sawtooth leg. The slope varies from a ratio of 4:2 for configuration 20 to a ratio of :2 for configuration 28 in abscissa increments of one-half. Configuration 28 is a straight-line configuration of Zero slope. Additional configurations 29 through 31 for the antenna conductors have the basic characteristics of a sawtooth configuration. However, small radii are utilized to join the different sawtooth leg increments. Velocity constant values computed from actual standing wave field measurements made with respect to configurations through 31 correspond closly to the calculated values of the table.
FIG. 7 provides a graphical illustration of the performance capability that may be obtained with an antenna incorporating this invention in comparison to an antenna such as conventional antenna 10. FIG. 7 plots on-axis axial ratio measurements taken for antennas having the conductor configurations of antennas 10 and 16 and having equal support area dimensions of approximately 3% square. Measurements relating to a base frequency 1 were taken over a frequency range extending to approximately 3.5 f. An axial ratio of ten decibels or less for the circularly-polarized radiated field was established as acceptable antenna performance. As shown by curve 32 for the antenna 10 conductor configuration, cutoff for a desired axial ratio of less than ten decibels occurs approximately midway between 2.5 f and 3.0 f, such cutoff frequency essentially begin correlated to a wavelength determined by the spiral conductor perimeter turn diameter. Curve 33 illustrates the actual performance of an antenna 16 of similar dimensions to the antenna of curve 32 but with a conductor sawtooth geometric configuration throughout. The cut-off frequency has been reduced to approximately 2 f by the invention with a reduced axial ratio in comparison to curve 32 throughout the remainder of the operating bandwith of interest.
The instant invention is illustrated as applied to a flat circularly-polarizing antenna having double-wound spiral conductors of uniform spacing from the point of feed to antenna perimeter. The instant invention is also considered to have application to other conductor arrangements including equiangular, conical, Archimedean spiral, and scimitar configurations. Conventional techniques such as perimeter squaring, lumped or distributed resistance end loading, and conductor dielectric imbedment may be utilized with the invention to further antenna operating performance for a specified operating bandwidth and axial ratio.
We claim:
1. In an antenna capable of radiating a circularlypolarized electromagnetic-energy field at different frequencies in an operating bandwidth extending from minimum frequency to maximum frequency f in combination:
(a) Dielectric support means having a support surface area,
(b) A pair of feed terminals for receiving two equalamplitude electrical currents continuously 180 out of phase with respect to each other at each of the different frequencies in said operating bandwidth,
(c) A pair of perimeter terminals, and
(d) A pair of interlaced multiple-turn spiral conductor elements secured to said dielectric support means support surface area throughout each current conducting path from said pair of feed terminals to said pair of perimeter terminals and having (1) a first section comprised of adjacent spiral conductor element turns respectively coupled at one extreme to said pair of feed terminals and provided with geometric configurations that propagate traveling waves from said electrical currents at frequency f along said first section spiral conductor element turns at a velocity approximately 1.0 times a reference traveling wave propagation velocity along a conductor of straight-line geometric configuration, (2) a second section comprised of adjacent spiral conductor element turns respectively coupled at one extreme to said pair of perimeter terminals and provided with sawtooth geometric configurations that propagate traveling waves from said electrical currents at frequency f along said second section conductor element turns at a velocity substantially less than said reference traveling wave propagation velocity along a conductor of straight-line geometric configuration, and (3) a transition section comprised of adjacent spiral conductor element turns respectively coupled at opposite extremes to the other extremes of said first and second section conductor element turns and provided with sawtooth geometric configurations that propagate traveling waves from said electrical currents at a frequency intermediate said frequency f and said frequency f along said transition section conductor element turns at a velocity proportionally intermediate said traveling wave propagation velocities along said first and second section conductor element turns.
2. The invention defined by claim 1, wherein said second section conductor element turns are provided with sawtooth geometric configurations that propagate traveling waves from said electrical currents at frequency f along said second section conductor element turns at a velocity approximately from 0.45 to 0.55 said reference traveling wave propagation velocity along a conductor of straight-line geometric configuration.
3. The invention defined by claim 1, wherein said transition section is comprised of successively different conductor element turns of different sawtooth geometric configurations that propagate traveling waves from said electrical currents at successively different frequencies intermediate said frequency and said frequency f along said transition section conductor element turns at corresponding successively different velocities proportionally intermediate said traveling wave propagation velocities along said first and second section conductor elements turns.
4. The invention defined by claim 1, wherein said transition section is comprised of successively different conductor element turns of different sawtooth geometric configurations that propagate traveling waves from said electrical currents at successively different frequencies intermediate said frequency f and said frequency f along said transition section conductor element turns at corresponding successively different velocities of approximately 0.97, 0.89, 0.80, 0.71, 0.62, 0.55, and 0.50 proportionally intermediate said traveling wave propagation velocities along said first and second section conductor element turns.
References Cited UNITED STATES PATENTS 1,718,255 6/1929 Ranzini 343-895 2,277,826 3/1942 Giroux 343-908 3,039,099 6/1962 Chait et a1. 343895 ELI LIEBERMAN, Primary Examiner
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63642267A | 1967-05-05 | 1967-05-05 | |
US77507868A | 1968-11-12 | 1968-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3465346A true US3465346A (en) | 1969-09-02 |
Family
ID=27092593
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US636422A Expired - Lifetime US3454951A (en) | 1967-05-05 | 1967-05-05 | Spiral antenna with zigzag arms to reduce size |
US775078A Expired - Lifetime US3465346A (en) | 1967-05-05 | 1968-11-12 | Circularly-polarizing spiral antenna having sawtooth conductors |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US636422A Expired - Lifetime US3454951A (en) | 1967-05-05 | 1967-05-05 | Spiral antenna with zigzag arms to reduce size |
Country Status (1)
Country | Link |
---|---|
US (2) | US3454951A (en) |
Cited By (157)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4243993A (en) * | 1979-11-13 | 1981-01-06 | The Boeing Company | Broadband center-fed spiral antenna |
US4318109A (en) * | 1978-05-05 | 1982-03-02 | Paul Weathers | Planar antenna with tightly wound folded sections |
US4605934A (en) * | 1984-08-02 | 1986-08-12 | The Boeing Company | Broad band spiral antenna with tapered arm width modulation |
US5517206A (en) * | 1991-07-30 | 1996-05-14 | Ball Corporation | Broad band antenna structure |
US6023250A (en) * | 1998-06-18 | 2000-02-08 | The United States Of America As Represented By The Secretary Of The Navy | Compact, phasable, multioctave, planar, high efficiency, spiral mode antenna |
US6160526A (en) * | 1997-06-23 | 2000-12-12 | Rohm Co., Ltd. | IC module and IC card |
WO2002009230A1 (en) * | 2000-07-20 | 2002-01-31 | Samsung Electronics, Ltd | Antenna |
US6362796B1 (en) | 2000-09-15 | 2002-03-26 | Bae Systems Aerospace Electronics Inc. | Broadband antenna |
US20020122009A1 (en) * | 2000-10-02 | 2002-09-05 | Mark Winebrand | Slot spiral miniaturized antenna |
US20030222825A1 (en) * | 2002-06-03 | 2003-12-04 | Sparks Kenneth D. | Spiral resonator-slot antenna |
CN103090775A (en) * | 2010-11-22 | 2013-05-08 | 通用电气公司 | Sensor assembly and microwave emitter for use in a sensor assembly |
US9608740B2 (en) | 2015-07-15 | 2017-03-28 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9615269B2 (en) | 2014-10-02 | 2017-04-04 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9628116B2 (en) | 2015-07-14 | 2017-04-18 | At&T Intellectual Property I, L.P. | Apparatus and methods for transmitting wireless signals |
US9640850B2 (en) | 2015-06-25 | 2017-05-02 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium |
US9667317B2 (en) | 2015-06-15 | 2017-05-30 | At&T Intellectual Property I, L.P. | Method and apparatus for providing security using network traffic adjustments |
US9674711B2 (en) | 2013-11-06 | 2017-06-06 | At&T Intellectual Property I, L.P. | Surface-wave communications and methods thereof |
US9685992B2 (en) | 2014-10-03 | 2017-06-20 | At&T Intellectual Property I, L.P. | Circuit panel network and methods thereof |
US9692101B2 (en) | 2014-08-26 | 2017-06-27 | At&T Intellectual Property I, L.P. | Guided wave couplers for coupling electromagnetic waves between a waveguide surface and a surface of a wire |
US9699785B2 (en) | 2012-12-05 | 2017-07-04 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US9705610B2 (en) | 2014-10-21 | 2017-07-11 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9705561B2 (en) | 2015-04-24 | 2017-07-11 | At&T Intellectual Property I, L.P. | Directional coupling device and methods for use therewith |
US9722318B2 (en) | 2015-07-14 | 2017-08-01 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US9729197B2 (en) | 2015-10-01 | 2017-08-08 | At&T Intellectual Property I, L.P. | Method and apparatus for communicating network management traffic over a network |
US9735833B2 (en) | 2015-07-31 | 2017-08-15 | At&T Intellectual Property I, L.P. | Method and apparatus for communications management in a neighborhood network |
US9742521B2 (en) | 2014-11-20 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US9742462B2 (en) | 2014-12-04 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission medium and communication interfaces and methods for use therewith |
US9749053B2 (en) | 2015-07-23 | 2017-08-29 | At&T Intellectual Property I, L.P. | Node device, repeater and methods for use therewith |
US9749013B2 (en) | 2015-03-17 | 2017-08-29 | At&T Intellectual Property I, L.P. | Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium |
US9748626B2 (en) | 2015-05-14 | 2017-08-29 | At&T Intellectual Property I, L.P. | Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium |
US9762289B2 (en) | 2014-10-14 | 2017-09-12 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting or receiving signals in a transportation system |
US9768833B2 (en) | 2014-09-15 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves |
US9769128B2 (en) | 2015-09-28 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for encryption of communications over a network |
US9769020B2 (en) | 2014-10-21 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for responding to events affecting communications in a communication network |
US9780834B2 (en) | 2014-10-21 | 2017-10-03 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting electromagnetic waves |
US9787412B2 (en) | 2015-06-25 | 2017-10-10 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US9793951B2 (en) | 2015-07-15 | 2017-10-17 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9793955B2 (en) | 2015-04-24 | 2017-10-17 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9793954B2 (en) | 2015-04-28 | 2017-10-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device and methods for use therewith |
US9800327B2 (en) | 2014-11-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Apparatus for controlling operations of a communication device and methods thereof |
US9820146B2 (en) | 2015-06-12 | 2017-11-14 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9838078B2 (en) | 2015-07-31 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9838896B1 (en) | 2016-12-09 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for assessing network coverage |
US9847850B2 (en) | 2014-10-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9847566B2 (en) | 2015-07-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a field of a signal to mitigate interference |
US9853342B2 (en) | 2015-07-14 | 2017-12-26 | At&T Intellectual Property I, L.P. | Dielectric transmission medium connector and methods for use therewith |
US9860075B1 (en) | 2016-08-26 | 2018-01-02 | At&T Intellectual Property I, L.P. | Method and communication node for broadband distribution |
US9866309B2 (en) | 2015-06-03 | 2018-01-09 | At&T Intellectual Property I, Lp | Host node device and methods for use therewith |
US9866276B2 (en) | 2014-10-10 | 2018-01-09 | At&T Intellectual Property I, L.P. | Method and apparatus for arranging communication sessions in a communication system |
US9865911B2 (en) | 2015-06-25 | 2018-01-09 | At&T Intellectual Property I, L.P. | Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium |
US9871282B2 (en) | 2015-05-14 | 2018-01-16 | At&T Intellectual Property I, L.P. | At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric |
US9871558B2 (en) | 2014-10-21 | 2018-01-16 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9871283B2 (en) | 2015-07-23 | 2018-01-16 | At&T Intellectual Property I, Lp | Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration |
US9876570B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9876605B1 (en) | 2016-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Launcher and coupling system to support desired guided wave mode |
US9876264B2 (en) | 2015-10-02 | 2018-01-23 | At&T Intellectual Property I, Lp | Communication system, guided wave switch and methods for use therewith |
US9882257B2 (en) | 2015-07-14 | 2018-01-30 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9887447B2 (en) | 2015-05-14 | 2018-02-06 | At&T Intellectual Property I, L.P. | Transmission medium having multiple cores and methods for use therewith |
US9893795B1 (en) | 2016-12-07 | 2018-02-13 | At&T Intellectual Property I, Lp | Method and repeater for broadband distribution |
US9906269B2 (en) | 2014-09-17 | 2018-02-27 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9904535B2 (en) | 2015-09-14 | 2018-02-27 | At&T Intellectual Property I, L.P. | Method and apparatus for distributing software |
US9911020B1 (en) | 2016-12-08 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for tracking via a radio frequency identification device |
US9912382B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US9912419B1 (en) | 2016-08-24 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for managing a fault in a distributed antenna system |
US9912033B2 (en) | 2014-10-21 | 2018-03-06 | At&T Intellectual Property I, Lp | Guided wave coupler, coupling module and methods for use therewith |
US9912027B2 (en) | 2015-07-23 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9913139B2 (en) | 2015-06-09 | 2018-03-06 | At&T Intellectual Property I, L.P. | Signal fingerprinting for authentication of communicating devices |
US9917341B2 (en) | 2015-05-27 | 2018-03-13 | At&T Intellectual Property I, L.P. | Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves |
US9927517B1 (en) | 2016-12-06 | 2018-03-27 | At&T Intellectual Property I, L.P. | Apparatus and methods for sensing rainfall |
US9930668B2 (en) | 2013-05-31 | 2018-03-27 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9948355B2 (en) | 2014-10-21 | 2018-04-17 | At&T Intellectual Property I, L.P. | Apparatus for providing communication services and methods thereof |
US9948333B2 (en) | 2015-07-23 | 2018-04-17 | At&T Intellectual Property I, L.P. | Method and apparatus for wireless communications to mitigate interference |
US9948354B2 (en) | 2015-04-28 | 2018-04-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device with reflective plate and methods for use therewith |
US9954287B2 (en) | 2014-11-20 | 2018-04-24 | At&T Intellectual Property I, L.P. | Apparatus for converting wireless signals and electromagnetic waves and methods thereof |
US9954286B2 (en) | 2014-10-21 | 2018-04-24 | At&T Intellectual Property I, L.P. | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9967173B2 (en) | 2015-07-31 | 2018-05-08 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9973940B1 (en) | 2017-02-27 | 2018-05-15 | At&T Intellectual Property I, L.P. | Apparatus and methods for dynamic impedance matching of a guided wave launcher |
US9991580B2 (en) | 2016-10-21 | 2018-06-05 | At&T Intellectual Property I, L.P. | Launcher and coupling system for guided wave mode cancellation |
US9999038B2 (en) | 2013-05-31 | 2018-06-12 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9997819B2 (en) | 2015-06-09 | 2018-06-12 | At&T Intellectual Property I, L.P. | Transmission medium and method for facilitating propagation of electromagnetic waves via a core |
US9998870B1 (en) | 2016-12-08 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus for proximity sensing |
US10009065B2 (en) | 2012-12-05 | 2018-06-26 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US10009067B2 (en) | 2014-12-04 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for configuring a communication interface |
US10009063B2 (en) | 2015-09-16 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having an out-of-band reference signal |
US10020844B2 (en) | 2016-12-06 | 2018-07-10 | T&T Intellectual Property I, L.P. | Method and apparatus for broadcast communication via guided waves |
US10027397B2 (en) | 2016-12-07 | 2018-07-17 | At&T Intellectual Property I, L.P. | Distributed antenna system and methods for use therewith |
US10027398B2 (en) | 2015-06-11 | 2018-07-17 | At&T Intellectual Property I, Lp | Repeater and methods for use therewith |
US10033107B2 (en) | 2015-07-14 | 2018-07-24 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US10033108B2 (en) | 2015-07-14 | 2018-07-24 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave having a wave mode that mitigates interference |
US10044409B2 (en) | 2015-07-14 | 2018-08-07 | At&T Intellectual Property I, L.P. | Transmission medium and methods for use therewith |
US10069535B2 (en) | 2016-12-08 | 2018-09-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves having a certain electric field structure |
US10079661B2 (en) | 2015-09-16 | 2018-09-18 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having a clock reference |
US10090606B2 (en) | 2015-07-15 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system with dielectric array and methods for use therewith |
US10090594B2 (en) | 2016-11-23 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system having structural configurations for assembly |
US10103422B2 (en) | 2016-12-08 | 2018-10-16 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10103801B2 (en) | 2015-06-03 | 2018-10-16 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US10135147B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via an antenna |
US10135146B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via circuits |
US10136434B2 (en) | 2015-09-16 | 2018-11-20 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having an ultra-wideband control channel |
US10135145B2 (en) | 2016-12-06 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave along a transmission medium |
US10142086B2 (en) | 2015-06-11 | 2018-11-27 | At&T Intellectual Property I, L.P. | Repeater and methods for use therewith |
US10139820B2 (en) | 2016-12-07 | 2018-11-27 | At&T Intellectual Property I, L.P. | Method and apparatus for deploying equipment of a communication system |
US10144036B2 (en) | 2015-01-30 | 2018-12-04 | At&T Intellectual Property I, L.P. | Method and apparatus for mitigating interference affecting a propagation of electromagnetic waves guided by a transmission medium |
US10148016B2 (en) | 2015-07-14 | 2018-12-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array |
US10168695B2 (en) | 2016-12-07 | 2019-01-01 | At&T Intellectual Property I, L.P. | Method and apparatus for controlling an unmanned aircraft |
US10170840B2 (en) | 2015-07-14 | 2019-01-01 | At&T Intellectual Property I, L.P. | Apparatus and methods for sending or receiving electromagnetic signals |
US10178445B2 (en) | 2016-11-23 | 2019-01-08 | At&T Intellectual Property I, L.P. | Methods, devices, and systems for load balancing between a plurality of waveguides |
US10205655B2 (en) | 2015-07-14 | 2019-02-12 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array and multiple communication paths |
USD841629S1 (en) * | 2017-03-29 | 2019-02-26 | Megabyte Limited | RFID antenna |
US10225025B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Method and apparatus for detecting a fault in a communication system |
US10224634B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Methods and apparatus for adjusting an operational characteristic of an antenna |
US10243784B2 (en) | 2014-11-20 | 2019-03-26 | At&T Intellectual Property I, L.P. | System for generating topology information and methods thereof |
US10243270B2 (en) | 2016-12-07 | 2019-03-26 | At&T Intellectual Property I, L.P. | Beam adaptive multi-feed dielectric antenna system and methods for use therewith |
US10264586B2 (en) | 2016-12-09 | 2019-04-16 | At&T Mobility Ii Llc | Cloud-based packet controller and methods for use therewith |
US10291311B2 (en) | 2016-09-09 | 2019-05-14 | At&T Intellectual Property I, L.P. | Method and apparatus for mitigating a fault in a distributed antenna system |
US10291334B2 (en) | 2016-11-03 | 2019-05-14 | At&T Intellectual Property I, L.P. | System for detecting a fault in a communication system |
US10298293B2 (en) | 2017-03-13 | 2019-05-21 | At&T Intellectual Property I, L.P. | Apparatus of communication utilizing wireless network devices |
US10305190B2 (en) | 2016-12-01 | 2019-05-28 | At&T Intellectual Property I, L.P. | Reflecting dielectric antenna system and methods for use therewith |
US10312567B2 (en) | 2016-10-26 | 2019-06-04 | At&T Intellectual Property I, L.P. | Launcher with planar strip antenna and methods for use therewith |
US10320586B2 (en) | 2015-07-14 | 2019-06-11 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating non-interfering electromagnetic waves on an insulated transmission medium |
US10326689B2 (en) | 2016-12-08 | 2019-06-18 | At&T Intellectual Property I, L.P. | Method and system for providing alternative communication paths |
US10326494B2 (en) | 2016-12-06 | 2019-06-18 | At&T Intellectual Property I, L.P. | Apparatus for measurement de-embedding and methods for use therewith |
US10341142B2 (en) | 2015-07-14 | 2019-07-02 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating non-interfering electromagnetic waves on an uninsulated conductor |
US10340601B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Multi-antenna system and methods for use therewith |
US10340603B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Antenna system having shielded structural configurations for assembly |
US10340983B2 (en) | 2016-12-09 | 2019-07-02 | At&T Intellectual Property I, L.P. | Method and apparatus for surveying remote sites via guided wave communications |
US10340600B2 (en) | 2016-10-18 | 2019-07-02 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via plural waveguide systems |
US10340573B2 (en) | 2016-10-26 | 2019-07-02 | At&T Intellectual Property I, L.P. | Launcher with cylindrical coupling device and methods for use therewith |
US10355367B2 (en) | 2015-10-16 | 2019-07-16 | At&T Intellectual Property I, L.P. | Antenna structure for exchanging wireless signals |
US10359749B2 (en) | 2016-12-07 | 2019-07-23 | At&T Intellectual Property I, L.P. | Method and apparatus for utilities management via guided wave communication |
US10361489B2 (en) | 2016-12-01 | 2019-07-23 | At&T Intellectual Property I, L.P. | Dielectric dish antenna system and methods for use therewith |
US10374316B2 (en) | 2016-10-21 | 2019-08-06 | At&T Intellectual Property I, L.P. | System and dielectric antenna with non-uniform dielectric |
US10382976B2 (en) | 2016-12-06 | 2019-08-13 | At&T Intellectual Property I, L.P. | Method and apparatus for managing wireless communications based on communication paths and network device positions |
US10389037B2 (en) | 2016-12-08 | 2019-08-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for selecting sections of an antenna array and use therewith |
US10389029B2 (en) | 2016-12-07 | 2019-08-20 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system with core selection and methods for use therewith |
US10411356B2 (en) | 2016-12-08 | 2019-09-10 | At&T Intellectual Property I, L.P. | Apparatus and methods for selectively targeting communication devices with an antenna array |
US10439675B2 (en) | 2016-12-06 | 2019-10-08 | At&T Intellectual Property I, L.P. | Method and apparatus for repeating guided wave communication signals |
US10446936B2 (en) | 2016-12-07 | 2019-10-15 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system and methods for use therewith |
US10498044B2 (en) | 2016-11-03 | 2019-12-03 | At&T Intellectual Property I, L.P. | Apparatus for configuring a surface of an antenna |
US10530505B2 (en) | 2016-12-08 | 2020-01-07 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves along a transmission medium |
US10535928B2 (en) | 2016-11-23 | 2020-01-14 | At&T Intellectual Property I, L.P. | Antenna system and methods for use therewith |
US10547348B2 (en) | 2016-12-07 | 2020-01-28 | At&T Intellectual Property I, L.P. | Method and apparatus for switching transmission mediums in a communication system |
US10601494B2 (en) | 2016-12-08 | 2020-03-24 | At&T Intellectual Property I, L.P. | Dual-band communication device and method for use therewith |
US10637149B2 (en) | 2016-12-06 | 2020-04-28 | At&T Intellectual Property I, L.P. | Injection molded dielectric antenna and methods for use therewith |
US10650940B2 (en) | 2015-05-15 | 2020-05-12 | At&T Intellectual Property I, L.P. | Transmission medium having a conductive material and methods for use therewith |
US10665942B2 (en) | 2015-10-16 | 2020-05-26 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting wireless communications |
US10694379B2 (en) | 2016-12-06 | 2020-06-23 | At&T Intellectual Property I, L.P. | Waveguide system with device-based authentication and methods for use therewith |
US10727599B2 (en) | 2016-12-06 | 2020-07-28 | At&T Intellectual Property I, L.P. | Launcher with slot antenna and methods for use therewith |
US10755542B2 (en) | 2016-12-06 | 2020-08-25 | At&T Intellectual Property I, L.P. | Method and apparatus for surveillance via guided wave communication |
US10777873B2 (en) | 2016-12-08 | 2020-09-15 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10797781B2 (en) | 2015-06-03 | 2020-10-06 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US10811767B2 (en) | 2016-10-21 | 2020-10-20 | At&T Intellectual Property I, L.P. | System and dielectric antenna with convex dielectric radome |
US10819035B2 (en) | 2016-12-06 | 2020-10-27 | At&T Intellectual Property I, L.P. | Launcher with helical antenna and methods for use therewith |
US10903556B2 (en) | 2016-09-21 | 2021-01-26 | Lockheed Martin Corporation | Up-down zigzag additive spiral antenna |
US10916969B2 (en) | 2016-12-08 | 2021-02-09 | At&T Intellectual Property I, L.P. | Method and apparatus for providing power using an inductive coupling |
US10938108B2 (en) | 2016-12-08 | 2021-03-02 | At&T Intellectual Property I, L.P. | Frequency selective multi-feed dielectric antenna system and methods for use therewith |
US11032819B2 (en) | 2016-09-15 | 2021-06-08 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having a control channel reference signal |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3681772A (en) * | 1970-12-31 | 1972-08-01 | Trw Inc | Modulated arm width spiral antenna |
US3795005A (en) * | 1972-10-12 | 1974-02-26 | Raytheon Co | Broad band spiral antenna |
US5227807A (en) * | 1989-11-29 | 1993-07-13 | Ael Defense Corp. | Dual polarized ambidextrous multiple deformed aperture spiral antennas |
KR200408694Y1 (en) * | 2005-10-04 | 2006-02-13 | 주식회사 이엠따블유안테나 | Subminiature internal antenna |
US7586462B1 (en) | 2007-01-29 | 2009-09-08 | Stephen G. Tetorka | Physically small spiral antenna |
WO2014006594A2 (en) * | 2012-07-06 | 2014-01-09 | Pier Rubesa | Method and apparatus for the amplification of electrical charges in biological systems or bioactive matter using an inductive disk with a fixed geometric trace |
US8922452B1 (en) | 2014-03-21 | 2014-12-30 | University Of South Florida | Periodic spiral antennas |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1718255A (en) * | 1925-08-24 | 1929-06-25 | Ranzini Romeo | Apparatus for wireless telephony and telegraphy |
US2277826A (en) * | 1940-10-31 | 1942-03-31 | F W Sickles Company | Antenna |
US3039099A (en) * | 1959-06-25 | 1962-06-12 | Herman N Chait | Linearly polarized spiral antenna system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3019439A (en) * | 1957-09-19 | 1962-01-30 | Martin Marietta Corp | Elliptically polarized spiral antenna |
US2977594A (en) * | 1958-08-14 | 1961-03-28 | Arthur E Marston | Spiral doublet antenna |
US3106714A (en) * | 1960-10-18 | 1963-10-08 | Collins Radio Co | Log periodic antenna with accordioned radiators to increase shunt capacitance |
-
1967
- 1967-05-05 US US636422A patent/US3454951A/en not_active Expired - Lifetime
-
1968
- 1968-11-12 US US775078A patent/US3465346A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1718255A (en) * | 1925-08-24 | 1929-06-25 | Ranzini Romeo | Apparatus for wireless telephony and telegraphy |
US2277826A (en) * | 1940-10-31 | 1942-03-31 | F W Sickles Company | Antenna |
US3039099A (en) * | 1959-06-25 | 1962-06-12 | Herman N Chait | Linearly polarized spiral antenna system |
Cited By (185)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4318109A (en) * | 1978-05-05 | 1982-03-02 | Paul Weathers | Planar antenna with tightly wound folded sections |
US4243993A (en) * | 1979-11-13 | 1981-01-06 | The Boeing Company | Broadband center-fed spiral antenna |
US4605934A (en) * | 1984-08-02 | 1986-08-12 | The Boeing Company | Broad band spiral antenna with tapered arm width modulation |
US5517206A (en) * | 1991-07-30 | 1996-05-14 | Ball Corporation | Broad band antenna structure |
US6160526A (en) * | 1997-06-23 | 2000-12-12 | Rohm Co., Ltd. | IC module and IC card |
US6023250A (en) * | 1998-06-18 | 2000-02-08 | The United States Of America As Represented By The Secretary Of The Navy | Compact, phasable, multioctave, planar, high efficiency, spiral mode antenna |
WO2002009230A1 (en) * | 2000-07-20 | 2002-01-31 | Samsung Electronics, Ltd | Antenna |
US6362796B1 (en) | 2000-09-15 | 2002-03-26 | Bae Systems Aerospace Electronics Inc. | Broadband antenna |
US20020122009A1 (en) * | 2000-10-02 | 2002-09-05 | Mark Winebrand | Slot spiral miniaturized antenna |
US6791497B2 (en) | 2000-10-02 | 2004-09-14 | Israel Aircraft Industries Ltd. | Slot spiral miniaturized antenna |
US20030222825A1 (en) * | 2002-06-03 | 2003-12-04 | Sparks Kenneth D. | Spiral resonator-slot antenna |
CN103090775A (en) * | 2010-11-22 | 2013-05-08 | 通用电气公司 | Sensor assembly and microwave emitter for use in a sensor assembly |
US9699785B2 (en) | 2012-12-05 | 2017-07-04 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US9788326B2 (en) | 2012-12-05 | 2017-10-10 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US10194437B2 (en) | 2012-12-05 | 2019-01-29 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US10009065B2 (en) | 2012-12-05 | 2018-06-26 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US9999038B2 (en) | 2013-05-31 | 2018-06-12 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US10051630B2 (en) | 2013-05-31 | 2018-08-14 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9930668B2 (en) | 2013-05-31 | 2018-03-27 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US10091787B2 (en) | 2013-05-31 | 2018-10-02 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9674711B2 (en) | 2013-11-06 | 2017-06-06 | At&T Intellectual Property I, L.P. | Surface-wave communications and methods thereof |
US10096881B2 (en) | 2014-08-26 | 2018-10-09 | At&T Intellectual Property I, L.P. | Guided wave couplers for coupling electromagnetic waves to an outer surface of a transmission medium |
US9692101B2 (en) | 2014-08-26 | 2017-06-27 | At&T Intellectual Property I, L.P. | Guided wave couplers for coupling electromagnetic waves between a waveguide surface and a surface of a wire |
US9768833B2 (en) | 2014-09-15 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves |
US10063280B2 (en) | 2014-09-17 | 2018-08-28 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9906269B2 (en) | 2014-09-17 | 2018-02-27 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9973416B2 (en) | 2014-10-02 | 2018-05-15 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9615269B2 (en) | 2014-10-02 | 2017-04-04 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9998932B2 (en) | 2014-10-02 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9685992B2 (en) | 2014-10-03 | 2017-06-20 | At&T Intellectual Property I, L.P. | Circuit panel network and methods thereof |
US9866276B2 (en) | 2014-10-10 | 2018-01-09 | At&T Intellectual Property I, L.P. | Method and apparatus for arranging communication sessions in a communication system |
US9762289B2 (en) | 2014-10-14 | 2017-09-12 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting or receiving signals in a transportation system |
US9973299B2 (en) | 2014-10-14 | 2018-05-15 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9847850B2 (en) | 2014-10-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9912033B2 (en) | 2014-10-21 | 2018-03-06 | At&T Intellectual Property I, Lp | Guided wave coupler, coupling module and methods for use therewith |
US9876587B2 (en) | 2014-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9769020B2 (en) | 2014-10-21 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for responding to events affecting communications in a communication network |
US9780834B2 (en) | 2014-10-21 | 2017-10-03 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting electromagnetic waves |
US9705610B2 (en) | 2014-10-21 | 2017-07-11 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9960808B2 (en) | 2014-10-21 | 2018-05-01 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9954286B2 (en) | 2014-10-21 | 2018-04-24 | At&T Intellectual Property I, L.P. | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9871558B2 (en) | 2014-10-21 | 2018-01-16 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9948355B2 (en) | 2014-10-21 | 2018-04-17 | At&T Intellectual Property I, L.P. | Apparatus for providing communication services and methods thereof |
US9749083B2 (en) | 2014-11-20 | 2017-08-29 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US10243784B2 (en) | 2014-11-20 | 2019-03-26 | At&T Intellectual Property I, L.P. | System for generating topology information and methods thereof |
US9954287B2 (en) | 2014-11-20 | 2018-04-24 | At&T Intellectual Property I, L.P. | Apparatus for converting wireless signals and electromagnetic waves and methods thereof |
US9800327B2 (en) | 2014-11-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Apparatus for controlling operations of a communication device and methods thereof |
US9742521B2 (en) | 2014-11-20 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US9742462B2 (en) | 2014-12-04 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission medium and communication interfaces and methods for use therewith |
US10009067B2 (en) | 2014-12-04 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for configuring a communication interface |
US10144036B2 (en) | 2015-01-30 | 2018-12-04 | At&T Intellectual Property I, L.P. | Method and apparatus for mitigating interference affecting a propagation of electromagnetic waves guided by a transmission medium |
US9876571B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9876570B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9749013B2 (en) | 2015-03-17 | 2017-08-29 | At&T Intellectual Property I, L.P. | Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium |
US9793955B2 (en) | 2015-04-24 | 2017-10-17 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9705561B2 (en) | 2015-04-24 | 2017-07-11 | At&T Intellectual Property I, L.P. | Directional coupling device and methods for use therewith |
US10224981B2 (en) | 2015-04-24 | 2019-03-05 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9831912B2 (en) | 2015-04-24 | 2017-11-28 | At&T Intellectual Property I, Lp | Directional coupling device and methods for use therewith |
US9948354B2 (en) | 2015-04-28 | 2018-04-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device with reflective plate and methods for use therewith |
US9793954B2 (en) | 2015-04-28 | 2017-10-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device and methods for use therewith |
US9871282B2 (en) | 2015-05-14 | 2018-01-16 | At&T Intellectual Property I, L.P. | At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric |
US9887447B2 (en) | 2015-05-14 | 2018-02-06 | At&T Intellectual Property I, L.P. | Transmission medium having multiple cores and methods for use therewith |
US9748626B2 (en) | 2015-05-14 | 2017-08-29 | At&T Intellectual Property I, L.P. | Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium |
US10650940B2 (en) | 2015-05-15 | 2020-05-12 | At&T Intellectual Property I, L.P. | Transmission medium having a conductive material and methods for use therewith |
US9917341B2 (en) | 2015-05-27 | 2018-03-13 | At&T Intellectual Property I, L.P. | Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves |
US9912381B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US10050697B2 (en) | 2015-06-03 | 2018-08-14 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US9967002B2 (en) | 2015-06-03 | 2018-05-08 | At&T Intellectual I, Lp | Network termination and methods for use therewith |
US9866309B2 (en) | 2015-06-03 | 2018-01-09 | At&T Intellectual Property I, Lp | Host node device and methods for use therewith |
US9935703B2 (en) | 2015-06-03 | 2018-04-03 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US9912382B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US10103801B2 (en) | 2015-06-03 | 2018-10-16 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US10812174B2 (en) | 2015-06-03 | 2020-10-20 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US10797781B2 (en) | 2015-06-03 | 2020-10-06 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US9997819B2 (en) | 2015-06-09 | 2018-06-12 | At&T Intellectual Property I, L.P. | Transmission medium and method for facilitating propagation of electromagnetic waves via a core |
US9913139B2 (en) | 2015-06-09 | 2018-03-06 | At&T Intellectual Property I, L.P. | Signal fingerprinting for authentication of communicating devices |
US10142086B2 (en) | 2015-06-11 | 2018-11-27 | At&T Intellectual Property I, L.P. | Repeater and methods for use therewith |
US10027398B2 (en) | 2015-06-11 | 2018-07-17 | At&T Intellectual Property I, Lp | Repeater and methods for use therewith |
US10142010B2 (en) | 2015-06-11 | 2018-11-27 | At&T Intellectual Property I, L.P. | Repeater and methods for use therewith |
US9820146B2 (en) | 2015-06-12 | 2017-11-14 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9667317B2 (en) | 2015-06-15 | 2017-05-30 | At&T Intellectual Property I, L.P. | Method and apparatus for providing security using network traffic adjustments |
US9787412B2 (en) | 2015-06-25 | 2017-10-10 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US9882657B2 (en) | 2015-06-25 | 2018-01-30 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US9640850B2 (en) | 2015-06-25 | 2017-05-02 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium |
US10069185B2 (en) | 2015-06-25 | 2018-09-04 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium |
US9865911B2 (en) | 2015-06-25 | 2018-01-09 | At&T Intellectual Property I, L.P. | Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium |
US9722318B2 (en) | 2015-07-14 | 2017-08-01 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US10205655B2 (en) | 2015-07-14 | 2019-02-12 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array and multiple communication paths |
US9628116B2 (en) | 2015-07-14 | 2017-04-18 | At&T Intellectual Property I, L.P. | Apparatus and methods for transmitting wireless signals |
US9882257B2 (en) | 2015-07-14 | 2018-01-30 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US10341142B2 (en) | 2015-07-14 | 2019-07-02 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating non-interfering electromagnetic waves on an uninsulated conductor |
US9847566B2 (en) | 2015-07-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a field of a signal to mitigate interference |
US9853342B2 (en) | 2015-07-14 | 2017-12-26 | At&T Intellectual Property I, L.P. | Dielectric transmission medium connector and methods for use therewith |
US10044409B2 (en) | 2015-07-14 | 2018-08-07 | At&T Intellectual Property I, L.P. | Transmission medium and methods for use therewith |
US9929755B2 (en) | 2015-07-14 | 2018-03-27 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US10033108B2 (en) | 2015-07-14 | 2018-07-24 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave having a wave mode that mitigates interference |
US10320586B2 (en) | 2015-07-14 | 2019-06-11 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating non-interfering electromagnetic waves on an insulated transmission medium |
US10033107B2 (en) | 2015-07-14 | 2018-07-24 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US10148016B2 (en) | 2015-07-14 | 2018-12-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array |
US10170840B2 (en) | 2015-07-14 | 2019-01-01 | At&T Intellectual Property I, L.P. | Apparatus and methods for sending or receiving electromagnetic signals |
US10090606B2 (en) | 2015-07-15 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system with dielectric array and methods for use therewith |
US9793951B2 (en) | 2015-07-15 | 2017-10-17 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9608740B2 (en) | 2015-07-15 | 2017-03-28 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US10074886B2 (en) | 2015-07-23 | 2018-09-11 | At&T Intellectual Property I, L.P. | Dielectric transmission medium comprising a plurality of rigid dielectric members coupled together in a ball and socket configuration |
US9871283B2 (en) | 2015-07-23 | 2018-01-16 | At&T Intellectual Property I, Lp | Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration |
US9912027B2 (en) | 2015-07-23 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9749053B2 (en) | 2015-07-23 | 2017-08-29 | At&T Intellectual Property I, L.P. | Node device, repeater and methods for use therewith |
US9948333B2 (en) | 2015-07-23 | 2018-04-17 | At&T Intellectual Property I, L.P. | Method and apparatus for wireless communications to mitigate interference |
US9806818B2 (en) | 2015-07-23 | 2017-10-31 | At&T Intellectual Property I, Lp | Node device, repeater and methods for use therewith |
US9838078B2 (en) | 2015-07-31 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9735833B2 (en) | 2015-07-31 | 2017-08-15 | At&T Intellectual Property I, L.P. | Method and apparatus for communications management in a neighborhood network |
US9967173B2 (en) | 2015-07-31 | 2018-05-08 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9904535B2 (en) | 2015-09-14 | 2018-02-27 | At&T Intellectual Property I, L.P. | Method and apparatus for distributing software |
US10079661B2 (en) | 2015-09-16 | 2018-09-18 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having a clock reference |
US10009063B2 (en) | 2015-09-16 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having an out-of-band reference signal |
US10136434B2 (en) | 2015-09-16 | 2018-11-20 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having an ultra-wideband control channel |
US9769128B2 (en) | 2015-09-28 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for encryption of communications over a network |
US9729197B2 (en) | 2015-10-01 | 2017-08-08 | At&T Intellectual Property I, L.P. | Method and apparatus for communicating network management traffic over a network |
US9876264B2 (en) | 2015-10-02 | 2018-01-23 | At&T Intellectual Property I, Lp | Communication system, guided wave switch and methods for use therewith |
US10665942B2 (en) | 2015-10-16 | 2020-05-26 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting wireless communications |
US10355367B2 (en) | 2015-10-16 | 2019-07-16 | At&T Intellectual Property I, L.P. | Antenna structure for exchanging wireless signals |
US9912419B1 (en) | 2016-08-24 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for managing a fault in a distributed antenna system |
US9860075B1 (en) | 2016-08-26 | 2018-01-02 | At&T Intellectual Property I, L.P. | Method and communication node for broadband distribution |
US10291311B2 (en) | 2016-09-09 | 2019-05-14 | At&T Intellectual Property I, L.P. | Method and apparatus for mitigating a fault in a distributed antenna system |
US11032819B2 (en) | 2016-09-15 | 2021-06-08 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having a control channel reference signal |
US10903556B2 (en) | 2016-09-21 | 2021-01-26 | Lockheed Martin Corporation | Up-down zigzag additive spiral antenna |
US10135147B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via an antenna |
US10135146B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via circuits |
US10340600B2 (en) | 2016-10-18 | 2019-07-02 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via plural waveguide systems |
US9991580B2 (en) | 2016-10-21 | 2018-06-05 | At&T Intellectual Property I, L.P. | Launcher and coupling system for guided wave mode cancellation |
US9876605B1 (en) | 2016-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Launcher and coupling system to support desired guided wave mode |
US10374316B2 (en) | 2016-10-21 | 2019-08-06 | At&T Intellectual Property I, L.P. | System and dielectric antenna with non-uniform dielectric |
US10811767B2 (en) | 2016-10-21 | 2020-10-20 | At&T Intellectual Property I, L.P. | System and dielectric antenna with convex dielectric radome |
US10340573B2 (en) | 2016-10-26 | 2019-07-02 | At&T Intellectual Property I, L.P. | Launcher with cylindrical coupling device and methods for use therewith |
US10312567B2 (en) | 2016-10-26 | 2019-06-04 | At&T Intellectual Property I, L.P. | Launcher with planar strip antenna and methods for use therewith |
US10224634B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Methods and apparatus for adjusting an operational characteristic of an antenna |
US10225025B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Method and apparatus for detecting a fault in a communication system |
US10498044B2 (en) | 2016-11-03 | 2019-12-03 | At&T Intellectual Property I, L.P. | Apparatus for configuring a surface of an antenna |
US10291334B2 (en) | 2016-11-03 | 2019-05-14 | At&T Intellectual Property I, L.P. | System for detecting a fault in a communication system |
US10178445B2 (en) | 2016-11-23 | 2019-01-08 | At&T Intellectual Property I, L.P. | Methods, devices, and systems for load balancing between a plurality of waveguides |
US10340603B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Antenna system having shielded structural configurations for assembly |
US10535928B2 (en) | 2016-11-23 | 2020-01-14 | At&T Intellectual Property I, L.P. | Antenna system and methods for use therewith |
US10090594B2 (en) | 2016-11-23 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system having structural configurations for assembly |
US10340601B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Multi-antenna system and methods for use therewith |
US10305190B2 (en) | 2016-12-01 | 2019-05-28 | At&T Intellectual Property I, L.P. | Reflecting dielectric antenna system and methods for use therewith |
US10361489B2 (en) | 2016-12-01 | 2019-07-23 | At&T Intellectual Property I, L.P. | Dielectric dish antenna system and methods for use therewith |
US10637149B2 (en) | 2016-12-06 | 2020-04-28 | At&T Intellectual Property I, L.P. | Injection molded dielectric antenna and methods for use therewith |
US10694379B2 (en) | 2016-12-06 | 2020-06-23 | At&T Intellectual Property I, L.P. | Waveguide system with device-based authentication and methods for use therewith |
US10326494B2 (en) | 2016-12-06 | 2019-06-18 | At&T Intellectual Property I, L.P. | Apparatus for measurement de-embedding and methods for use therewith |
US10727599B2 (en) | 2016-12-06 | 2020-07-28 | At&T Intellectual Property I, L.P. | Launcher with slot antenna and methods for use therewith |
US10755542B2 (en) | 2016-12-06 | 2020-08-25 | At&T Intellectual Property I, L.P. | Method and apparatus for surveillance via guided wave communication |
US9927517B1 (en) | 2016-12-06 | 2018-03-27 | At&T Intellectual Property I, L.P. | Apparatus and methods for sensing rainfall |
US10439675B2 (en) | 2016-12-06 | 2019-10-08 | At&T Intellectual Property I, L.P. | Method and apparatus for repeating guided wave communication signals |
US10135145B2 (en) | 2016-12-06 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave along a transmission medium |
US10819035B2 (en) | 2016-12-06 | 2020-10-27 | At&T Intellectual Property I, L.P. | Launcher with helical antenna and methods for use therewith |
US10020844B2 (en) | 2016-12-06 | 2018-07-10 | T&T Intellectual Property I, L.P. | Method and apparatus for broadcast communication via guided waves |
US10382976B2 (en) | 2016-12-06 | 2019-08-13 | At&T Intellectual Property I, L.P. | Method and apparatus for managing wireless communications based on communication paths and network device positions |
US10168695B2 (en) | 2016-12-07 | 2019-01-01 | At&T Intellectual Property I, L.P. | Method and apparatus for controlling an unmanned aircraft |
US9893795B1 (en) | 2016-12-07 | 2018-02-13 | At&T Intellectual Property I, Lp | Method and repeater for broadband distribution |
US10139820B2 (en) | 2016-12-07 | 2018-11-27 | At&T Intellectual Property I, L.P. | Method and apparatus for deploying equipment of a communication system |
US10389029B2 (en) | 2016-12-07 | 2019-08-20 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system with core selection and methods for use therewith |
US10243270B2 (en) | 2016-12-07 | 2019-03-26 | At&T Intellectual Property I, L.P. | Beam adaptive multi-feed dielectric antenna system and methods for use therewith |
US10027397B2 (en) | 2016-12-07 | 2018-07-17 | At&T Intellectual Property I, L.P. | Distributed antenna system and methods for use therewith |
US10446936B2 (en) | 2016-12-07 | 2019-10-15 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system and methods for use therewith |
US10359749B2 (en) | 2016-12-07 | 2019-07-23 | At&T Intellectual Property I, L.P. | Method and apparatus for utilities management via guided wave communication |
US10944177B2 (en) | 2016-12-07 | 2021-03-09 | At&T Intellectual Property 1, L.P. | Multi-feed dielectric antenna system and methods for use therewith |
US10547348B2 (en) | 2016-12-07 | 2020-01-28 | At&T Intellectual Property I, L.P. | Method and apparatus for switching transmission mediums in a communication system |
US10326689B2 (en) | 2016-12-08 | 2019-06-18 | At&T Intellectual Property I, L.P. | Method and system for providing alternative communication paths |
US10601494B2 (en) | 2016-12-08 | 2020-03-24 | At&T Intellectual Property I, L.P. | Dual-band communication device and method for use therewith |
US10530505B2 (en) | 2016-12-08 | 2020-01-07 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves along a transmission medium |
US10938108B2 (en) | 2016-12-08 | 2021-03-02 | At&T Intellectual Property I, L.P. | Frequency selective multi-feed dielectric antenna system and methods for use therewith |
US10411356B2 (en) | 2016-12-08 | 2019-09-10 | At&T Intellectual Property I, L.P. | Apparatus and methods for selectively targeting communication devices with an antenna array |
US10916969B2 (en) | 2016-12-08 | 2021-02-09 | At&T Intellectual Property I, L.P. | Method and apparatus for providing power using an inductive coupling |
US10103422B2 (en) | 2016-12-08 | 2018-10-16 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US9911020B1 (en) | 2016-12-08 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for tracking via a radio frequency identification device |
US10777873B2 (en) | 2016-12-08 | 2020-09-15 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10069535B2 (en) | 2016-12-08 | 2018-09-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves having a certain electric field structure |
US10389037B2 (en) | 2016-12-08 | 2019-08-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for selecting sections of an antenna array and use therewith |
US9998870B1 (en) | 2016-12-08 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus for proximity sensing |
US9838896B1 (en) | 2016-12-09 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for assessing network coverage |
US10264586B2 (en) | 2016-12-09 | 2019-04-16 | At&T Mobility Ii Llc | Cloud-based packet controller and methods for use therewith |
US10340983B2 (en) | 2016-12-09 | 2019-07-02 | At&T Intellectual Property I, L.P. | Method and apparatus for surveying remote sites via guided wave communications |
US9973940B1 (en) | 2017-02-27 | 2018-05-15 | At&T Intellectual Property I, L.P. | Apparatus and methods for dynamic impedance matching of a guided wave launcher |
US10298293B2 (en) | 2017-03-13 | 2019-05-21 | At&T Intellectual Property I, L.P. | Apparatus of communication utilizing wireless network devices |
USD841629S1 (en) * | 2017-03-29 | 2019-02-26 | Megabyte Limited | RFID antenna |
Also Published As
Publication number | Publication date |
---|---|
US3454951A (en) | 1969-07-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3465346A (en) | Circularly-polarizing spiral antenna having sawtooth conductors | |
US6014107A (en) | Dual orthogonal near vertical incidence skywave antenna | |
US4495505A (en) | Printed circuit balun with a dipole antenna | |
US3587110A (en) | Corporate-network printed antenna system | |
US5790080A (en) | Meander line loaded antenna | |
US4054874A (en) | Microstrip-dipole antenna elements and arrays thereof | |
US3740754A (en) | Broadband cup-dipole and cup-turnstile antennas | |
US4028704A (en) | Broadband ferrite transformer-fed whip antenna | |
US3576578A (en) | Dipole antenna in which one radiating element is formed by outer conductors of two distinct transmission lines having different characteristic impedances | |
US4608574A (en) | Backfire bifilar helix antenna | |
US6034650A (en) | Small helical antenna with non-directional radiation pattern | |
US3732572A (en) | Log periodic antenna with foreshortened dipoles | |
US3031668A (en) | Dielectric loaded colinear vertical dipole antenna | |
JPH0221164B2 (en) | ||
US6034648A (en) | Broad band antenna | |
US3618107A (en) | Broadband discone antenna having auxiliary cone | |
US3348228A (en) | Circular dipole antenna array | |
US3656168A (en) | Spiral antenna with overlapping turns | |
US4649396A (en) | Double-tuned blade monopole | |
US3745585A (en) | Broadband plane antenna with log-periodic reflectors | |
US4631504A (en) | Impedance conversion transformer | |
US3193831A (en) | Logarithmic periodic antenna | |
US5526007A (en) | Wire antenna for circularly polarized wave | |
US4031539A (en) | Broadband turnstile antenna | |
US3543277A (en) | Reduced size broadband antenna |