CA1231439A - A low-profile microstrip antenna - Google Patents
A low-profile microstrip antennaInfo
- Publication number
- CA1231439A CA1231439A CA000471552A CA471552A CA1231439A CA 1231439 A CA1231439 A CA 1231439A CA 000471552 A CA000471552 A CA 000471552A CA 471552 A CA471552 A CA 471552A CA 1231439 A CA1231439 A CA 1231439A
- Authority
- CA
- Canada
- Prior art keywords
- substrate
- antenna
- radiation pattern
- fed
- conductive layer
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
- H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
Abstract
ABSTRACT OF DISCLOSURE
ANTENNA
An antenna suitable for the generation of circularly polarised annular radiation pattern comprising a substrate spaced apart from a ground plane by a layer of dielectric material, the substrate being arranged to carry on one side thereof a conductive layer in which a plurality of radial slots is defined equiangularly disposed to extend outwardly from a central region of the substrate and on the other side thereof a microstrip feed line arrangement via which the radial slots are arranged to be fed with microwave energy for the generation of a horizontally polarised radiation pattern and via which an edge slot defined between the peripheral edge of the layer and the ground plane is arranged to be fed with microwave energy for the generation of a vertically polarised radiation pattern whereby the horizontal pattern and the vertical pattern in combination afford the circularly polarised annular radiation pattern.
ANTENNA
An antenna suitable for the generation of circularly polarised annular radiation pattern comprising a substrate spaced apart from a ground plane by a layer of dielectric material, the substrate being arranged to carry on one side thereof a conductive layer in which a plurality of radial slots is defined equiangularly disposed to extend outwardly from a central region of the substrate and on the other side thereof a microstrip feed line arrangement via which the radial slots are arranged to be fed with microwave energy for the generation of a horizontally polarised radiation pattern and via which an edge slot defined between the peripheral edge of the layer and the ground plane is arranged to be fed with microwave energy for the generation of a vertically polarised radiation pattern whereby the horizontal pattern and the vertical pattern in combination afford the circularly polarised annular radiation pattern.
Description
ANTENNA
This invention relates to antennas and move paL~icularly it relates to miccowavs antennas suitable or the generation of a circularly polarized annular radiation pattern.
Antennas or the generation of such radiation patterns art known and known antenna comprise bulky multimedia spiral or blade antennas which have the serious disadvantage ox preventing a large profile which is unsuitable lot some application.
It it an important object of the present invention to provide a low profile antenna suitable for use on aircraft More particularly in accordance with the invention there is provided, an antenna suitable -for the generation ox a cicculally eolari~ed annular radiation patter comprising a ~bstrate spaced apart from a ground plane by a layer of dielectric material, the substrate being arranged to carry on one wide thereof a conductive layer in which a plurality of radial Lotte it defined equiangularly disposed to extend outwardly from a central region of toe substrate and on the other wide Thor a micro6~rip feed line arrangement comprising printed conductor which are fed via a zoo centrally disposed weed conductor foe a coaxial connect which printed conductors are linked through the substrate at a plurality of locations to the conductive layer or radial filet feeding purpose 60 that the radial Lowe are arranged to be fed with microwave energy for the generation of a horizontally polarized radiation pattern and which pints conductor are linked through the substrate and the layer of dielectric material to ohs ground , ,,~
Jo I
plane at a plurality of further location fix a Jo weed an edge 810t defined between a peripheral edge ox the conductive layer and the ground plane such aye the edge slot it Ted with microwave energy for the generation ox a vertically polaLi~ed radiation pattern suck that the horizontal pattern and the vertical pattern in combination afford the circular polarized annular radiation pattern.
Four radial slot may be provided arranged at 90 angular intervals to extend radially oddly from a central region ox the substrate to the peripheral edge of the conductive layer.
The conductive layer may be provided adjacent the layer of dielectric material.
The coaxial connector may be positioned on the ground plane side of the antenna.
The edge 510ts may be fed a four eguiangulacy disposed locations and the radial slots may each be fed from a location adjacent to sack 810t 80 that four feed locations Lee provided for the radial slots which are somatically diapered with respect to the central weed conductor.
One embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which Figure 1 is a plan view of an antenna:
Figure 2 is a side view of the antenna shown in Figure l;
Figure 3 is a sectional view on a line X-X of a portion of the antenna shown in Fugue 1:
Figure 4 i& a sectional view on a line YO-YO of a part of the antenna shown in Figure l;
Figure S is a sectional view on a line Z-Z as shown in Figure 2: and Figure 6 is a polar diagram illustrating the radiation pattern associated with the antenna shown in Yigure6 1 and 2.
Referring now to the drawing, wherein corresponding parts bear as appropriate the same numerical designations. an antenna comprises a printed circuit board substrate 1 on one side of which a copper mic~ostrip feed line arrangement 2 it formed and on the other side of which a copper conductive layer 3 it laid down in which radially extending Lotte are folded. The radial Lotte 4 are disposed at OWE angular intervals and are arranged Jo be fed with microwave energy from the micros rip feed line arrangement 2 for the generation ox a horizontally polarized radiation pattern and an edge slot 5, defined between the peripteral edge ox the conductive layer 3 and a ground plane 6 from which it is spaced such as by roamed dielectric 5', is arranged to be fed with microwave energy from the micro strip feed line arrangement 2 for the radiation of a vertically polarized radiation pattern. In combination, the vertical and horizontal polari~at1on pattern combine to define a circularly polarized annular radiation pattern as shown in Figure 6. The radiation pattern it in eject a circularly polarized dipole-liko pattern which is rotationally symmetrical.
The microstrîp feed line arrangement 2 it Ted from the central conductor 7 ox a coaxial socket connector a. The central L Lo conductor 7 is insulated by a plastics insulator region 9 which forms Hart ox the socket connector B. The conductor 7 pus through the printed circuit board 1 to be coupled as by means of soldering to the micro strip feed line 2. The ground plane 6, which may comprise a sheet of aluminum, it spaced apart from the conductive layer 3 by means ox an annular spacer boss lo which arts as shorting block and is made of aluminum, into one side of which screws 11 are driven to secure the errand circuit board 1 and into the other side ox which screws 12 are driven Jo secure the coaxial socket connector 8.
A four regions 13. as shown in Figure 1, the micro trip feed line 2 is connected through ho printed circuit board 1 and the foamed dielectric 5' to the ground plane by moan of conductor such as the conductor device 14 as shown in Figure I.
The regions 13 are feed points for thy edge slot 5. At four further regions 15. the micro strip redline is connected through the printed circuit board 1 Jo the conductive layer 3 as shown in Figure 4 whereby microwave energy is Ted Jo the four radial 610t~
4. Connections between the micro trip feedlin~ 2 and the conductive layer 3 are effected by mean ~3~L~3~
of through board connectors such as the connector 16 shown in Figure 4.
By utilizing a microwave antenna as just before described the generation of a circularly polarized annular radiation pattern is facilitated and a low profile configuration is afforded.
This invention relates to antennas and move paL~icularly it relates to miccowavs antennas suitable or the generation of a circularly polarized annular radiation pattern.
Antennas or the generation of such radiation patterns art known and known antenna comprise bulky multimedia spiral or blade antennas which have the serious disadvantage ox preventing a large profile which is unsuitable lot some application.
It it an important object of the present invention to provide a low profile antenna suitable for use on aircraft More particularly in accordance with the invention there is provided, an antenna suitable -for the generation ox a cicculally eolari~ed annular radiation patter comprising a ~bstrate spaced apart from a ground plane by a layer of dielectric material, the substrate being arranged to carry on one wide thereof a conductive layer in which a plurality of radial Lotte it defined equiangularly disposed to extend outwardly from a central region of toe substrate and on the other wide Thor a micro6~rip feed line arrangement comprising printed conductor which are fed via a zoo centrally disposed weed conductor foe a coaxial connect which printed conductors are linked through the substrate at a plurality of locations to the conductive layer or radial filet feeding purpose 60 that the radial Lowe are arranged to be fed with microwave energy for the generation of a horizontally polarized radiation pattern and which pints conductor are linked through the substrate and the layer of dielectric material to ohs ground , ,,~
Jo I
plane at a plurality of further location fix a Jo weed an edge 810t defined between a peripheral edge ox the conductive layer and the ground plane such aye the edge slot it Ted with microwave energy for the generation ox a vertically polaLi~ed radiation pattern suck that the horizontal pattern and the vertical pattern in combination afford the circular polarized annular radiation pattern.
Four radial slot may be provided arranged at 90 angular intervals to extend radially oddly from a central region ox the substrate to the peripheral edge of the conductive layer.
The conductive layer may be provided adjacent the layer of dielectric material.
The coaxial connector may be positioned on the ground plane side of the antenna.
The edge 510ts may be fed a four eguiangulacy disposed locations and the radial slots may each be fed from a location adjacent to sack 810t 80 that four feed locations Lee provided for the radial slots which are somatically diapered with respect to the central weed conductor.
One embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which Figure 1 is a plan view of an antenna:
Figure 2 is a side view of the antenna shown in Figure l;
Figure 3 is a sectional view on a line X-X of a portion of the antenna shown in Fugue 1:
Figure 4 i& a sectional view on a line YO-YO of a part of the antenna shown in Figure l;
Figure S is a sectional view on a line Z-Z as shown in Figure 2: and Figure 6 is a polar diagram illustrating the radiation pattern associated with the antenna shown in Yigure6 1 and 2.
Referring now to the drawing, wherein corresponding parts bear as appropriate the same numerical designations. an antenna comprises a printed circuit board substrate 1 on one side of which a copper mic~ostrip feed line arrangement 2 it formed and on the other side of which a copper conductive layer 3 it laid down in which radially extending Lotte are folded. The radial Lotte 4 are disposed at OWE angular intervals and are arranged Jo be fed with microwave energy from the micros rip feed line arrangement 2 for the generation ox a horizontally polarized radiation pattern and an edge slot 5, defined between the peripteral edge ox the conductive layer 3 and a ground plane 6 from which it is spaced such as by roamed dielectric 5', is arranged to be fed with microwave energy from the micro strip feed line arrangement 2 for the radiation of a vertically polarized radiation pattern. In combination, the vertical and horizontal polari~at1on pattern combine to define a circularly polarized annular radiation pattern as shown in Figure 6. The radiation pattern it in eject a circularly polarized dipole-liko pattern which is rotationally symmetrical.
The microstrîp feed line arrangement 2 it Ted from the central conductor 7 ox a coaxial socket connector a. The central L Lo conductor 7 is insulated by a plastics insulator region 9 which forms Hart ox the socket connector B. The conductor 7 pus through the printed circuit board 1 to be coupled as by means of soldering to the micro strip feed line 2. The ground plane 6, which may comprise a sheet of aluminum, it spaced apart from the conductive layer 3 by means ox an annular spacer boss lo which arts as shorting block and is made of aluminum, into one side of which screws 11 are driven to secure the errand circuit board 1 and into the other side ox which screws 12 are driven Jo secure the coaxial socket connector 8.
A four regions 13. as shown in Figure 1, the micro trip feed line 2 is connected through ho printed circuit board 1 and the foamed dielectric 5' to the ground plane by moan of conductor such as the conductor device 14 as shown in Figure I.
The regions 13 are feed points for thy edge slot 5. At four further regions 15. the micro strip redline is connected through the printed circuit board 1 Jo the conductive layer 3 as shown in Figure 4 whereby microwave energy is Ted Jo the four radial 610t~
4. Connections between the micro trip feedlin~ 2 and the conductive layer 3 are effected by mean ~3~L~3~
of through board connectors such as the connector 16 shown in Figure 4.
By utilizing a microwave antenna as just before described the generation of a circularly polarized annular radiation pattern is facilitated and a low profile configuration is afforded.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An antenna suitable for the generation of a circularly polarised annular radiation pattern comprising a substrate spaced apart from a ground plane by a layer of dielectric material, the substrate being arranged to carry on one side thereof a conductive layer in which a plurality of radial slots is defined equiangularly disposed to extend outwardly from a central region of the substrate and on the other side thereof a microstrip feed line arrangement comprising printed conductors which are fed via a centrally disposed feed conductor from a coaxial connector, which printed conductors are linked through the substrate at a plurality of locations to the conductive layer for radial slot feeding purposes so that the radial slots are arranged to be fed with microwave energy for the generation of a horizontally polarised radiation pattern and which printed conductors are linked through the substrate and the layer of dielectric material to the ground plane at a plurality of further locations so as to feed an edge slot defined between a peripherial edge of the conductive layer and the ground plane such that the edge slot is fed with microwave energy for the generation of a vertically polarised radiation pattern such that the horizontal pattern and the vertical pattern in combination afford the circularly polarised annular radiation pattern.
2. An antenna as claimed in claim 1 wherein four radial slots are provided arranged at 90° angular intervals to extend radially outwardly from a central region of the substrate to the peripheral edge of the conductive layer.
3. An antenna as claimed in claim 2 wherein the conductive layer is provided adjacent the layer of dielectric material.
4. An antenna as claimed in claim 3, wherein the coaxial connector is positioned on the ground plane side of the antenna.
5. An antenna as claimed in claim 4 wherein the edge slots are fed at four equiangularly disposed locations and the radial slots are each fed from a location adjacent to each slot so that four feed locations are provided for the radial slots which are symmetrically disposed with respect to the central feed conductor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8400153 | 1984-01-05 | ||
| GB08400153A GB2152757B (en) | 1984-01-05 | 1984-01-05 | Antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1231439A true CA1231439A (en) | 1988-01-12 |
Family
ID=10554564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000471552A Expired CA1231439A (en) | 1984-01-05 | 1985-01-04 | A low-profile microstrip antenna |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4672386A (en) |
| EP (1) | EP0149922B1 (en) |
| AU (1) | AU586155B2 (en) |
| CA (1) | CA1231439A (en) |
| DE (1) | DE3473097D1 (en) |
| DK (1) | DK5885A (en) |
| GB (1) | GB2152757B (en) |
| GR (1) | GR850029B (en) |
| NO (1) | NO845285L (en) |
| PT (1) | PT79791B (en) |
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| RU2542892C2 (en) * | 2013-07-23 | 2015-02-27 | Федеральное государственное унитарное предприятие "Ростовский-на-Дону научно-исследовательский институт радиосвязи" (ФГУП "РНИИРС") | Dipole antenna |
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| CN104836024B (en) * | 2015-05-11 | 2018-02-13 | 江苏拓元科技发展有限公司 | Ku frequency range circular polarisation conelike beam antennas |
| CN106099396B (en) * | 2015-10-21 | 2019-02-05 | 罗森伯格技术（昆山）有限公司 | Dual polarization antenna radiation unit and dual-polarized antenna array |
| CN110622351B (en) | 2017-05-04 | 2021-04-20 | 华为技术有限公司 | Dual polarized radiating element and antenna |
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| CN115349197A (en) * | 2020-05-09 | 2022-11-15 | 华为技术有限公司 | Antenna for a wireless communication device and such a device |
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| US4242685A (en) * | 1979-04-27 | 1980-12-30 | Ball Corporation | Slotted cavity antenna |
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| US4547779A (en) * | 1983-02-10 | 1985-10-15 | Ball Corporation | Annular slot antenna |
-
1984
- 1984-01-05 GB GB08400153A patent/GB2152757B/en not_active Expired
- 1984-12-21 EP EP84309058A patent/EP0149922B1/en not_active Expired
- 1984-12-21 DE DE8484309058T patent/DE3473097D1/en not_active Expired
- 1984-12-28 NO NO845285A patent/NO845285L/en unknown
-
1985
- 1985-01-03 PT PT79791A patent/PT79791B/en unknown
- 1985-01-03 AU AU37293/85A patent/AU586155B2/en not_active Ceased
- 1985-01-03 GR GR850029A patent/GR850029B/el unknown
- 1985-01-04 CA CA000471552A patent/CA1231439A/en not_active Expired
- 1985-01-04 US US06/688,816 patent/US4672386A/en not_active Expired - Fee Related
- 1985-01-04 DK DK5885A patent/DK5885A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO845285L (en) | 1985-07-08 |
| EP0149922A2 (en) | 1985-07-31 |
| EP0149922A3 (en) | 1985-08-21 |
| AU3729385A (en) | 1985-07-18 |
| US4672386A (en) | 1987-06-09 |
| PT79791B (en) | 1986-09-10 |
| AU586155B2 (en) | 1989-07-06 |
| GB2152757A (en) | 1985-08-07 |
| GR850029B (en) | 1985-05-06 |
| GB2152757B (en) | 1987-10-14 |
| EP0149922B1 (en) | 1988-07-27 |
| PT79791A (en) | 1985-02-01 |
| DK5885D0 (en) | 1985-01-04 |
| DE3473097D1 (en) | 1988-09-01 |
| DK5885A (en) | 1985-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |