CN105261840A - Micro-strip reflective array antenna with honeycomb-like unit arrangement - Google Patents
Micro-strip reflective array antenna with honeycomb-like unit arrangement Download PDFInfo
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- CN105261840A CN105261840A CN201510796182.2A CN201510796182A CN105261840A CN 105261840 A CN105261840 A CN 105261840A CN 201510796182 A CN201510796182 A CN 201510796182A CN 105261840 A CN105261840 A CN 105261840A
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Abstract
The invention provides a micro-strip reflective array antenna with a honeycomb-like unit arrangement, and the antenna works in a Ku waveband. The antenna comprises a feed source and a micro-strip reflective array; the antenna is characterized in that the feed source is a pyramid horn antenna and the feeding mode is positive feed; the micro-strip reflective array is hexagonal, including multi-resonant structural units nested by coaxial hexagonal rings of different sizes in a rotating manner; the multi-resonant structural units are attached to a dielectric substrate in a honeycomb-like arrangement; a foaming layer is arranged between the dielectric substrate and a floor; the beam direction of the whole reflective array is a direction perpendicular to the array plane. The unit arrangement mode of the micro-strip reflective array antenna is different from the conventional transversal and longitudinal arrangement mode; instead, the units of the micro-strip reflective array antenna are in the honeycomb-like arrangement; due to the arrangement mode, the space utilization of the reflective array surface is improved to enable the unit arrangement to be more tightened; and in addition, the micro-strip reflective array antenna is attractive in appearance, wider in bandwidth and good in the radiation performance.
Description
Technical field
The invention belongs to antenna technical field, particularly a kind of microstrip reflection array antenna of unit honeycomb arrangement.
Background technology
Need high-gain aerial in other remote wireless transmission fields such as satellite communication, radar detection, radio astronomy research, parabolic antenna and phased array antenna play key player.Parabolic antenna has that structure is simple, gain is high, power capacity is large, the advantages such as bandwidth, but the curve form of itself makes antenna volume huge and heavy, and processing cost is higher under high band.In addition, the beam scanning of parabolic antenna needs to rely on machinery to rotate, and beam position is difficult to maneuverability.Planar Phased Array Antenna relies on the flexible control of feeding network, independently can regulate and control amplitude and the phase place of exciting current on each radiating element, thus realize the function such as beam scanning, wave beam forming, and scan mode is flexible and scope is larger.But the feeding network of its complexity causes phased array antenna, and not only processing cost is high, and loss is large, and efficiency is difficult to ensure.In order to overcome these shortcomings of above-mentioned two kinds of antennas, foreign scholar takes the lead in proposing a kind of microstrip reflection array antenna, this antenna adopts flat plate array reflecting surface to replace paraboloidal a kind of new type reflection surface antenna, by reasonably utilizing the phase-shift characterisitc of each unit, reflective array is made to be equivalent to parabolic antenna.
The volume that microstrip reflection array antenna has is little, lightweight, processing cost is low, make the advantage such as simple makes it all have very high using value in military field or civil area.Traditional microstrip reflection array antenna forms by unit transverse is longitudinally evenly distributed; The maximum defect of this reflective array antenna is its narrow-band characteristic, and be usually less than 10% even lower, two the factors restrictions of different spatial phase delay are caused in the different path of bandwidth sum of its bandwidth main raying unit.
Summary of the invention
The object of the invention is to overcome the narrow-band characteristic that laterally longitudinally evenly distributed microstrip reflectarray antenna traditional at present exists, a kind of microstrip reflection array antenna of Novel unit honeycomb arrangement is provided, this kind of unit is honeycomb arrangement, improve the space utilization on reflective array surface, unit is arranged tightr, structure is attractive in appearance, and broader bandwidth, radiance is good.
To achieve these goals, the microstrip reflection array antenna of a kind of unit honeycomb arrangement provided by the invention, is operated in Ku wave band; Described antenna comprises: feed and microstrip reflection array, and described feed is pyramidal horn antenna, and feeding classification is for just to present; The shape of described microstrip reflection array is hexagon, the coaxial hexagonal rings comprising different size rotates nested multiple resonant structures unit, these multiple resonant structures unit are attached on dielectric substrate in the mode of honeycomb arrangement, between dielectric substrate and floor, be provided with froth bed; The beam position of whole reflective array is vertical front direction.
In technique scheme, the distance in described microstrip reflection array between adjacent two multiple resonant structures unit centers is 13mm.
In technique scheme, the DIELECTRIC CONSTANT ε of dielectric substrate
r=2.2, thickness is 0.508mm.
In technique scheme, in the nested hexagonal described microstrip reflection array of formation, each hexagonal length of side is 0.75 times of its adjacent outside hexagonal side length.
In technique scheme, the dielectric constant of described froth bed is 1.06, and thickness is 3mm.
The invention has the advantages that: the unit arrangement mode of microstrip reflection array antenna of the present invention is different from traditional laterally longitudinally evenly distributed mode, and unit is the mode of honeycomb arrangement; This arrangement mode improves the space utilization on reflective array surface, and unit is arranged more tight, structure is attractive in appearance, and broader bandwidth, radiance is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of unit honeycomb arrangement reflective array antenna of the present invention;
Fig. 2 is the microstrip reflection array antenna surface texture figure of unit honeycomb arrangement of the present invention;
Fig. 3 is that coaxial hexagonal rings rotates nested cell schematics;
Fig. 4 is element analysis model schematic;
Fig. 5 is that coaxial hexagonal rings rotates the reflected phase will curve of nested cell at centre frequency 13.58GHz place;
Fig. 6 is the antenna pattern of inventive antenna at centre frequency 13.58GHz place;
Fig. 7 is the gain of reflective array antenna of the present invention at different frequency place.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further.
As shown in Figure 1, a kind of microstrip reflection array antenna of unit honeycomb arrangement, is operated in Ku wave band; Described antenna comprises: feed and microstrip reflection array, and described feed is pyramidal horn antenna, and feeding classification is for just to present; It is cellular evenly distributed microstrip reflection array element that described microstrip reflection array comprises several; The beam position of reflective array is designed to vertical front direction; The shape of reflective array is hexagon, makes the arrangement of unit more tight, more makes full use of the space on reflective array surface.
As shown in Figure 2, the coaxial hexagonal rings that described microstrip reflection array comprises different size rotates nested multiple resonant structures unit, these multiple resonant structures unit are attached on dielectric substrate in the mode of honeycomb arrangement, between dielectric substrate and floor, be provided with froth bed; Preferably, the distance (grid cycle) between adjacent two unit centers is the DIELECTRIC CONSTANT ε of 13mm, dielectric substrate
r=2.2, thickness is 0.508mm; As shown in Figure 3, each hexagonal length of side is 0.75 times of its adjacent outside hexagonal side length; The dielectric constant of described froth bed is 1.06, and thickness is 3mm.
Due in micro-band plane reflection battle array, the wave-path that the incident wave that feed sends arrives each unit is unequal, causes the incident phase of unit different, in order to realize homophase reflected beam in far field, needs to carry out certain phase compensation to each unit.In the present invention, by making the different phase difference compensated because reflective array unit brings due to range difference of the cell size at diverse location place in reflective array.
Following formula is adopted to calculate the required phase place size compensated of each position unit:
Wherein, k
0the propagation constant in vacuum, the propagation constant difference that different frequencies is corresponding; d
irepresent the distance of feed phase center to i-th unit; (x
i, y
i) be the centre coordinate of i-th unit;
for the radiation direction of reflective array;
it is exactly the required phase place compensated of i-th unit.
As shown in Figure 4, the methods analyst plan periodic structure that principal and subordinate border and Floquet port combine is adopted in high-frequency electromagnetic simulation software HFSS, only need extract a unit, the reflected phase will of the cellular periodic arrangement structure of unit is analyzed, extract reflected phase will parameter, again in conjunction with the required phase place compensated of each position unit, the size of each position unit just can be determined.This element analysis model is different from the model of traditional analysis microstrip reflection array antenna unit, traditional unit is the surface that the mode of arranging with even ranks is attached to reflective array, and periodic boundary condition and the periodic boundary condition with honeycomb arrangement unit of the present invention of each unit are different.
As shown in Figure 5, in high-frequency electromagnetic simulation software HFSS, the methods analyst combined by above-mentioned principal and subordinate border and Floquet port obtains: when ragged edge hexagonal side length be a be increased to 6mm from 1.5mm time, reflected phase will in honeycomb arrangement unit changes to-415 ° from 45 °, total size reaches 460 °, meet the phase range of 360 ° required by reflective array unit, and the linearity of this curve is better.After determining the reflected phase will curve at centre frequency place and the reflected phase will of the required compensation of unit, just can be obtained the size of each unit by linear difference algorithm, just can carry out modeling analysis to reflective array afterwards.
As shown in Figure 6, reflectarray antenna of the present invention is at centre frequency 13.58GHz place, and its radiation gain reaches 30.9dB, and secondary lobe is-21dB, and cross polarization is lower than-50dB.As shown in Figure 7, in the frequency band range of 12GHz ~ 16GHz, reflectarray antenna gain fluctuation of the present invention is less.The gain bandwidth of its-1.5dB reaches 24%, has wider frequency band.These conclusions illustrate, the microstrip reflection array antenna of unit honeycomb arrangement of the present invention has good radiation characteristic.
It should be noted last that, above-described is only one embodiment of the present of invention, not any pro forma restriction is done to the present invention, those of ordinary skill in the art is to be understood that, when not departing from principle of the present invention and aim, modify to the present invention or replace, not departing from the scope of the invention, it all should be encompassed in the middle of right of the present invention.
Claims (5)
1. a microstrip reflection array antenna for unit honeycomb arrangement, is operated in Ku wave band; Described antenna comprises: feed and microstrip reflection array, is characterized in that, described feed is pyramidal horn antenna, and feeding classification is for just to present; The shape of described microstrip reflection array is hexagon, the coaxial hexagonal rings comprising different size rotates nested multiple resonant structures unit, these multiple resonant structures unit are attached on dielectric substrate in the mode of honeycomb arrangement, between dielectric substrate and floor, be provided with froth bed; The beam position of whole reflective array is vertical front direction.
2. the microstrip reflection array antenna of unit honeycomb arrangement according to claim 1, is characterized in that, the distance in described microstrip reflection array between adjacent two multiple resonant structures unit centers is 13mm.
3. the microstrip reflection array antenna of unit honeycomb arrangement according to claim 1, is characterized in that, the DIELECTRIC CONSTANT ε of dielectric substrate
r=2.2, thickness is 0.508mm.
4. the microstrip reflection array antenna of unit honeycomb arrangement according to claim 1, is characterized in that, in the nested hexagonal described microstrip reflection array of formation, each hexagonal length of side is 0.75 times of its adjacent outside hexagonal side length.
5. the microstrip reflection array antenna of unit honeycomb arrangement according to claim 1, is characterized in that, the dielectric constant of described froth bed is 1.06, and thickness is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796182.2A CN105261840A (en) | 2015-11-18 | 2015-11-18 | Micro-strip reflective array antenna with honeycomb-like unit arrangement |
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| CN201510796182.2A CN105261840A (en) | 2015-11-18 | 2015-11-18 | Micro-strip reflective array antenna with honeycomb-like unit arrangement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025564A (en) * | 2016-06-13 | 2016-10-12 | 西安电子科技大学 | Transmission beam control method employing multi-layer FSSs |
| CN108091997A (en) * | 2018-01-30 | 2018-05-29 | 厦门大学嘉庚学院 | A kind of compound ultra-wide band antenna of nesting sensing-hexagonal array and terminal |
| CN108110404A (en) * | 2017-12-14 | 2018-06-01 | 中国科学院光电技术研究所 | A kind of heavy-calibre planar achromatism reflective array antenna |
| CN111987481A (en) * | 2020-08-21 | 2020-11-24 | 中国科学院国家空间科学中心 | Reflective array antenna and design method thereof |
| CN114976617A (en) * | 2022-06-07 | 2022-08-30 | 重庆大学 | Reflective array element, large-caliber broadband planar reflective array and design method |
| CN115036683A (en) * | 2022-05-25 | 2022-09-09 | 西安电子科技大学 | Reflective array antenna based on solar cell panel unit |
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| US6404404B1 (en) * | 2000-07-31 | 2002-06-11 | Trw Inc. | Density tapered transmit phased array |
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| US6404404B1 (en) * | 2000-07-31 | 2002-06-11 | Trw Inc. | Density tapered transmit phased array |
| CN102769197A (en) * | 2012-06-29 | 2012-11-07 | 深圳光启创新技术有限公司 | Wave-transmitting material and radome and antenna system both employing same |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025564A (en) * | 2016-06-13 | 2016-10-12 | 西安电子科技大学 | Transmission beam control method employing multi-layer FSSs |
| CN106025564B (en) * | 2016-06-13 | 2018-11-16 | 西安电子科技大学 | A kind of transmission wave beam regulation method using multilayer FSS |
| CN108110404A (en) * | 2017-12-14 | 2018-06-01 | 中国科学院光电技术研究所 | A kind of heavy-calibre planar achromatism reflective array antenna |
| CN108110404B (en) * | 2017-12-14 | 2020-07-17 | 中国科学院光电技术研究所 | Large-caliber planar achromatic reflective array antenna |
| CN108091997A (en) * | 2018-01-30 | 2018-05-29 | 厦门大学嘉庚学院 | A kind of compound ultra-wide band antenna of nesting sensing-hexagonal array and terminal |
| CN108091997B (en) * | 2018-01-30 | 2023-08-01 | 厦门大学嘉庚学院 | Nested induction-hexagonal array composite ultra-wideband antenna and terminal |
| CN111987481A (en) * | 2020-08-21 | 2020-11-24 | 中国科学院国家空间科学中心 | Reflective array antenna and design method thereof |
| CN115036683A (en) * | 2022-05-25 | 2022-09-09 | 西安电子科技大学 | Reflective array antenna based on solar cell panel unit |
| CN115036683B (en) * | 2022-05-25 | 2024-02-02 | 西安电子科技大学 | Reflection array antenna based on solar panel unit |
| CN114976617A (en) * | 2022-06-07 | 2022-08-30 | 重庆大学 | Reflective array element, large-caliber broadband planar reflective array and design method |
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Application publication date: 20160120 |