CN108075238B - Metal grid transmission unit with multilayer structure and array antenna - Google Patents
Metal grid transmission unit with multilayer structure and array antenna Download PDFInfo
- Publication number
- CN108075238B CN108075238B CN201711454373.6A CN201711454373A CN108075238B CN 108075238 B CN108075238 B CN 108075238B CN 201711454373 A CN201711454373 A CN 201711454373A CN 108075238 B CN108075238 B CN 108075238B
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- metal
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- array antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/02—Details
Abstract
The invention discloses a metal grid transmission unit with a multilayer structure and a transmission array antenna, wherein a medium of the metal grid transmission unit is made of an optically transparent polymer material, and the thickness of the medium is 0.3-2 mm; the metal grid transmission unit comprises more than two concentric grid rings, each grid ring comprises two metal rings and a metal thin wire radiating from the center, the metal rings are connected through the metal thin wire, the distance between every two metal rings is 0.1-0.5mm, and the included angle between every two adjacent metal thin wires is 0-40 degrees. The antenna is transparent to visible light and can be integrated on glass of buildings and solar sailboards of microsatellites.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to an optically transparent reconfigurable transmission array antenna.
Background
The microsatellite has the characteristics of small volume, light weight, low energy consumption, high reliability and the like. With the development of microsatellites, the demand for integration of electronic devices is increasing. The antenna is used as an important device of a microwave remote sensing, radar and communication system on a microsatellite platform, and if the antenna can be integrated on a solar sailboard, the solar sailboard can collect solar energy and the antenna can transmit and receive signals. Because the antenna is integrated on the solar sailboard, the size of the microsatellite can be greatly reduced, and the emission cost of the microsatellite is saved. Therefore, the optical transparent antenna has great application prospect.
The transmission array antenna has the advantages of low structural section, light weight, high gain, wide frequency band and no feed source shielding as a high-gain antenna, the radiation pattern of the transmission array antenna can be freely controlled, and the transmission array antenna is suitable for application of dual-frequency band, dual polarization and the like and is very suitable for a microsatellite system.
However, the existing transmission array antenna usually adopts a microwave dielectric plate structure, and the transmission unit adopts a metal patch form, which is not transparent to visible light, and is integrated on the solar panel to block illumination, thereby affecting the power generation efficiency of the solar panel.
Disclosure of Invention
It is an object of the present invention to overcome the disadvantages of the prior art and to provide an optically transparent reconfigurable transmission array antenna.
In order to achieve the above object, the present invention provides a metal mesh transmission unit with a multilayer structure, wherein the medium is made of an optically transparent polymer material, and the thickness of the polymer material is 0.3-2 mm; the metal grid unit comprises more than two concentric grid rings, each grid ring comprises two metal rings and a metal thin wire radiating from the center, the metal rings are connected through the metal thin wires, the distance between the metal rings is 0.1-0.5mm, and the adjacent metal thin wires have an included angle of 0-40 degrees.
As a better alternative to the above-mentioned metallic mesh transmission unit, the organic polymer is polymethyl methacrylate, polycarbonate or polyolefin.
As a better choice of the above metal grid transmission unit, the metal wire can be an iron wire, a tungsten wire or a copper wire.
As a better choice for the metal mesh transmission unit, the radius r of the mesh ring is 0.3-1.5 mm. Preferably, r is 0.53 to 1.5 mm.
As a better choice of the metal mesh transmission unit, the polymer material is polymethyl methacrylate (PMMA), and the thickness is 0.8 mm. The metal grid unit is composed of two concentric grid rings, each of which is composed of two metal rings (0.05 mm in width) and a thin metal wire (0.05 mm in width) radiating from the center. The distance between the two metal rings is 0.2mm, and the angle between the adjacent metal thin wires is 20 degrees. The distance between two adjacent dielectric slabs is H. The distance between the two mesh rings is g. By changing the radius r of the mesh ring, the transmission phase of the unit can be changed from 0 to 300 degrees. According to the design formula of patent CN 201510196793, "a transmission array antenna in metal plate lens antenna", an optically transparent transmission array antenna can be designed by arranging the metal grid cells periodically according to different radii.
The invention adopts the optical transparent dielectric material to replace the traditional opaque dielectric plate, and the transmission unit is processed on the transparent dielectric plate, thereby providing the optical transparent transmission array antenna. In addition, the transmission unit in the form of a patch is replaced by the gridding metal unit, so that the transparency of the transmission array antenna is further improved. The transmission array antenna can realize main beam scanning of minus 30 degrees to plus 30 degrees by moving the horn feed source on the focal plane of the transmission array.
Another object of the present invention is to provide an array antenna comprising the above metal mesh transmission unit, wherein the array antenna comprises a plurality of the above metal mesh transmission units.
The mesh transmission units are arranged according to different radius periods, and the specific arrangement mode can be seen in the prior art.
The antenna is transparent to visible light and can be integrated on glass of buildings and solar sailboards of microsatellites. The radiation performance of the transparent transmission array antenna is basically consistent with that of the traditional transmission array antenna. The horn feed source moves on the focal plane of the transparent transmission array antenna, so that main beam scanning of-30 degrees can be realized. The sidelobe level of the scanned beam is less than-18 dB, the crossover plan level is less than-38 dB, and the 3dB gain bandwidth is greater than 18%.
Drawings
FIG. 1(a) is a top view of the structure of a metal mesh transparent unit in the present invention;
FIG. 1(b) is a side view of the structure of the metal mesh transparent unit in the present invention;
FIG. 2 is a graph of transmission phase versus cell radius for a metal mesh transparent cell in accordance with the present invention;
FIG. 3 is a transmission phase curve of the transparent unit of metal mesh under different incident wave angles, where theta is an angle θ;
fig. 4 is a schematic diagram of an optically transparent reconfigurable transmission array antenna in the present invention;
fig. 5 is a far field pattern of a scanned beam of an optically transparent reconfigurable transmission array antenna according to the present invention.
Detailed Description
An optically transparent reconfigurable transmission array antenna of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1(a), the present invention provides a metal mesh transparent unit, in this embodiment, the side length P =5.8mm, the metal mesh unit is composed of two concentric mesh rings, each mesh ring is composed of two metal rings (width is 0.05 mm) and a thin metal wire (width is 0.05 mm) radiating from the center. The distance between the two metal rings is 0.2mm, and the angle between the adjacent metal thin wires is 20 degrees.
The cell adopts polymethyl methacrylate (PMMA for short) as a medium, the thickness is T =0.8mm, and there are three layers, as shown in fig. 1(b), the distance between two adjacent layers is H =1.83 mm.
As shown in fig. 2, when the operating frequency is 28GHz, the transmission phase of the unit can be changed in a range of 300 ° when the small circular inner diameter r is changed from 0.53mm to 1.13 mm.
As shown in fig. 3, it is a transmission phase curve of the metal mesh transparent unit provided by the present invention under incident waves at different angles, and it can be known from simulation results that when the incident angle of the incident wave is changed, the transmission phase curve of the unit is substantially kept stable, which proves that the angle stability of the unit is higher and is substantially consistent with that of the conventional transmission array antenna.
Based on the transparent unit in the metal grid form, the invention also provides an optically transparent reconfigurable transmission array antenna, which comprises a feed source and a plurality of the metal grid transparent units arranged along the same plane.
According to the design formula of a transmission array antenna in the patent CN 201510196793 "transmission array antenna in metal plate lens antenna", an optically transparent reconfigurable transmission array antenna with an aperture of 104.4mm is designed, as shown in fig. 4.
When the feed source moves on the focal plane of the transmission array antenna, the moving range is-30.1 mm, and the main beam of the antenna can realize scanning within the range of-30 degrees. The sidelobe level of the scanned beam is less than-18 dB, the crossover plan level is less than-38 dB, and the 3dB gain bandwidth is greater than 18%.
In the above metal mesh transmission unit, the organic polymer is polymethyl methacrylate, polycarbonate or polyolefin.
In the above-mentioned metal mesh transmission unit, the metal wire may be an iron wire or a tungsten wire.
In the metal mesh transmission unit, the radius r of the mesh ring may be 0.3-1.5 mm.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A metal mesh transmission unit with a multilayer structure is characterized in that a medium is made of an optically transparent polymer material, and the thickness of the medium is 0.3-2 mm; the metal grid transmission unit comprises two concentric grid rings, each grid ring comprises two metal rings and metal thin wires distributed in a radial mode, the metal rings are connected through the metal thin wires, the distance between every two adjacent metal rings is 0.1-0.5mm, and the adjacent metal thin wires have included angles of 0-40 degrees.
2. The metallic mesh transmission unit of claim 1, wherein the polymeric material is polymethylmethacrylate, polycarbonate, or polyolefin.
3. The metallic mesh transmission unit of claim 1, wherein the metallic thin wires are iron, tungsten or copper wires.
4. A metal mesh transmission unit according to claim 1, characterized in that the radius r of the inner metal ring of the inner mesh ring is 0.3-1.5 mm.
5. The metallic mesh transmission unit of claim 1, wherein said polymeric material is polymethylmethacrylate, having a thickness of 0.8 mm; the metal grid unit consists of two concentric grid rings, and each grid ring comprises two metal rings and a metal thin wire radiating from the center; the distance between the two metal rings is 0.2mm, and the angle between the adjacent metal thin wires is 20 degrees.
6. An array antenna, characterized in that it comprises a number of metallic mesh transmission elements as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454373.6A CN108075238B (en) | 2017-12-28 | 2017-12-28 | Metal grid transmission unit with multilayer structure and array antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454373.6A CN108075238B (en) | 2017-12-28 | 2017-12-28 | Metal grid transmission unit with multilayer structure and array antenna |
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| Publication Number | Publication Date |
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| CN108075238A CN108075238A (en) | 2018-05-25 |
| CN108075238B true CN108075238B (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711454373.6A Active CN108075238B (en) | 2017-12-28 | 2017-12-28 | Metal grid transmission unit with multilayer structure and array antenna |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112158056B (en) * | 2020-09-02 | 2023-06-20 | 安徽精卓光显技术有限责任公司 | Glass assembly, on-board OBU assembly, vehicle and electronic expense collection system |
| CN112909574B (en) * | 2021-02-09 | 2022-09-20 | 中国科学院光电技术研究所 | Dual-frequency large-angle scanning film reflective array antenna based on sub-wavelength structure |
| CN112993598B (en) * | 2021-02-23 | 2022-11-18 | 中国人民解放军国防科技大学 | Low-cost transparent phased array antenna for low-orbit spacecraft |
| CN112993597B (en) * | 2021-02-23 | 2022-11-18 | 中国人民解放军国防科技大学 | Satellite-borne multi-beam switching transparent antenna |
| CN115603057B (en) * | 2022-09-22 | 2023-07-25 | 鹏城实验室 | Phase modulation glass and method based on transmission super surface |
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| GB2406718A (en) * | 2003-10-03 | 2005-04-06 | Roke Manor Research | Antenna beam steering using a Fresnel zone plate with controllable conductivity |
| CN101032052A (en) * | 2005-04-04 | 2007-09-05 | 松下电器产业株式会社 | On-vehicle antenna device and electronic device possessing same |
| CN103268985A (en) * | 2013-04-24 | 2013-08-28 | 同济大学 | Electromagnetic wave beam regulating and controlling device |
| CN103329344A (en) * | 2010-12-09 | 2013-09-25 | Agc汽车美洲研发公司 | Window assembly having an antenna element overlapping a transparent layer and an adjacent outer region |
| CN103515701A (en) * | 2013-10-23 | 2014-01-15 | 哈尔滨工业大学 | Infrared transmission microstrip antenna based on circular metallic mesh and infrared transmission semiconductor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101180764B (en) * | 2005-04-01 | 2012-02-15 | 日本写真印刷株式会社 | Transparent antenna for vehicle and vehicle glass with antenna |
| JP5708519B2 (en) * | 2012-02-03 | 2015-04-30 | 株式会社デンソー | Solar cell integrated antenna |
| CN103811862B (en) * | 2014-02-17 | 2016-03-09 | 东莞劲胜精密组件股份有限公司 | A kind of manufacture method of transparent antenna |
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- 2017-12-28 CN CN201711454373.6A patent/CN108075238B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2406718A (en) * | 2003-10-03 | 2005-04-06 | Roke Manor Research | Antenna beam steering using a Fresnel zone plate with controllable conductivity |
| CN101032052A (en) * | 2005-04-04 | 2007-09-05 | 松下电器产业株式会社 | On-vehicle antenna device and electronic device possessing same |
| CN103329344A (en) * | 2010-12-09 | 2013-09-25 | Agc汽车美洲研发公司 | Window assembly having an antenna element overlapping a transparent layer and an adjacent outer region |
| CN103268985A (en) * | 2013-04-24 | 2013-08-28 | 同济大学 | Electromagnetic wave beam regulating and controlling device |
| CN103515701A (en) * | 2013-10-23 | 2014-01-15 | 哈尔滨工业大学 | Infrared transmission microstrip antenna based on circular metallic mesh and infrared transmission semiconductor |
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| CN108075238A (en) | 2018-05-25 |
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