CN113285235A - Wide-beam lens antenna - Google Patents
Wide-beam lens antenna Download PDFInfo
- Publication number
- CN113285235A CN113285235A CN202110735459.6A CN202110735459A CN113285235A CN 113285235 A CN113285235 A CN 113285235A CN 202110735459 A CN202110735459 A CN 202110735459A CN 113285235 A CN113285235 A CN 113285235A
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- China
- Prior art keywords
- lens
- wide
- antenna
- layer
- feed source
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- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/002—Protection against seismic waves, thermal radiation or other disturbances, e.g. nuclear explosion; Arrangements for improving the power handling capability of an antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
- H01Q19/06—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 using refracting or diffracting devices, e.g. lens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- Aerials With Secondary Devices (AREA)
Abstract
本发明公开了一种宽波束透镜天线，属于天线技术领域。该天线包括馈源和透镜，透镜结构为平凸透镜，且透镜顶部的中间位置设有凹坑；透镜外层上设有均匀排布的盲孔构成成透镜匹配层；透镜的内芯为透镜芯层，且馈源安装于透镜的底部中央。本发明提高了与远距离的目标通信质量，实现高质量的大区域波束覆盖。
The invention discloses a wide beam lens antenna, which belongs to the technical field of antennas. The antenna includes a feed source and a lens, the lens structure is a plano-convex lens, and the top of the lens is provided with a pit in the middle; the outer layer of the lens is provided with evenly arranged blind holes to form a lens matching layer; the inner core of the lens is the lens core layer, and the feed is mounted in the bottom center of the lens. The invention improves the communication quality with long-distance targets, and realizes high-quality beam coverage in large areas.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a wide-beam lens antenna.
Background
In a satellite communication system, a wide-beam radiation directional diagram can realize energy coverage of a wide-angle domain, so that a communication area is expanded, and multi-link transmission of signals is realized. Generally, methods for widening antenna beams include longitudinal stub loading, back cavity loading, miniaturization of antennas, loading of lenses and the like, wherein the lenses adopt dielectric constant gradual change or microstructure size gradual change, although the methods can widen the beam width of the antennas, the directional patterns of the antennas are still steamed bread-shaped directional patterns, and the large-angle gain is low.
Disclosure of Invention
In view of the above, the present invention provides a wide beam lens antenna. The antenna improves the communication quality with a long-distance target and realizes high-quality large-area beam coverage.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a wide-beam lens antenna comprises a feed source and a lens, wherein the lens is a plano-convex lens, and a pit is arranged in the middle of the top of the lens; the outer layer of the lens is provided with blind holes which are uniformly distributed to form a lens matching layer; the inner core of the lens is a lens core layer, and the feed source is arranged in the center of the bottom of the lens.
Further, the equivalent dielectric constant epsilon of the blind hole2Is equal to the dielectric constant epsilon of the inner layer material1。
Furthermore, the central axis of the blind hole is perpendicular to the outer surface of the lens where the blind hole is located.
Further, the material of the lens is crosslinked polystyrene.
Further, the distance between the blind holes is smaller than half of the working wavelength.
Further, the feed source is located at the focal position of the lens.
The invention adopts the technical scheme to produce the beneficial effects that:
1. the lens matching layer covers the surface of the lens core layer and is of an integrated structure, and the lens matching layer performs good impedance matching on electromagnetic waves incident to an interface between the lens and air, so that high-efficiency wide-beam radiation can be realized.
2. The invention can improve the low elevation gain of the antenna, improve the communication quality with a remote target and realize high-quality large-area beam coverage.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention.
Fig. 2 is a radiation pattern of an embodiment of the present invention.
In the figure: 1. blind hole, 2, feed source.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
A wide-beam lens antenna comprises a feed source and a lens, wherein the lens is a plano-convex lens, and a pit is arranged in the middle of the top of the lens; the outer layer of the lens is provided with blind holes which are uniformly distributed to form a lens matching layer; the inner core of the lens is a lens core layer, and the feed source is arranged in the center of the bottom of the lens.
Further, the equivalent dielectric constant epsilon of the blind hole2Is equal to the dielectric constant epsilon of the inner layer material1。
Furthermore, the central axis of the blind hole is perpendicular to the outer surface of the lens where the blind hole is located.
Further, the material of the lens is crosslinked polystyrene.
Further, the distance between the blind holes is smaller than half of the working wavelength.
The following is a more specific example:
referring to fig. 1 and 2, the present embodiment includes a feed source, a lens core layer, and a lens matching layer. The lateral dimension (10-20 λ) and thickness (5-10 λ) of the lens, where λ is the operating wavelength; when the wave beam is large enough, the shaping design can be carried out on the lens by adopting a light ray tracing method, and the curve shape of the lens is utilized to deflect the near-spherical wave light rays radiated from the waveguide port to a specific direction so as to form an ultra-wide wave beam directional diagram.
By optimally designing the shape of the lens curve, the beam forming of spherical waves emitted by the feed source can be realized, and a new method is provided for designing a wide-beam antenna. The embodiment can improve the low elevation gain of the antenna, improve the communication quality with a remote target and realize high-quality large-area beam coverage.
The invention comprises a feed source, a lens core layer and a lens matching layer.
The feed source is arranged at the bottom of the lens core layer and can be in the forms of a waveguide port, a horn, a microstrip and the like.
The wide beam and other special waveform beam radiation can be realized by optimizing the curve shape of the lens.
The material and thickness of the lens matching layer are determined by the dielectric constant of the core layer material, and the matching layer can be made of a foaming material or a traditional material, and can also be made of a medium perforated structure or a metamaterial.
The lens provided in this embodiment is shown in fig. 1, the feed source is in the form of a waveguide port, and the lens has a transverse dimension of about 13 λ and a thickness of about 5 λ. The lens core material was crosslinked polystyrene, had a dielectric constant of 2.53 and a loss tangent of 0.0005. The lens matching layer is made by punching periodic air holes in the cross-linked polystyrene material of the outer layer to achieve the equivalent dielectric constant (about 1.7) required for impedance matching.
Full-wave simulation is carried out on the radiation performance of the lens antenna by using CST commercial software, and the simulation result is shown in FIG. 2. The simulation result shows that the directional diagram of the feed source is a traditional steamed bread-shaped directional diagram, and after the shaped wide beam lens is loaded, the directional diagram of the antenna radiates at a low elevation angle, so that the beam width is widened.
In conclusion, the wide-beam lens antenna can improve the low elevation gain of the antenna, improve the communication quality with a long-distance target and realize high-quality large-area beam coverage.
Claims (6)
1. A wide-beam lens antenna comprises a feed source and is characterized by further comprising a lens, wherein the lens is a plano-convex lens in structure, and a concave pit is formed in the middle of the top of the lens; the outer layer of the lens is provided with blind holes which are uniformly distributed to form a lens matching layer; the inner core of the lens is a lens core layer, and the feed source is arranged in the center of the bottom of the lens.
2. The wide-beam lens antenna according to claim 1, wherein the blind-hole equivalent dielectric constant ∈ is set2Is equal to the dielectric constant epsilon of the inner layer material1。
3. The wide-beam lens antenna according to claim 1, wherein the central axis of the blind hole is perpendicular to the outer surface of the lens where the blind hole is located.
4. The wide-beam lens antenna according to claim 1, wherein the material of said lens is cross-linked polystyrene.
5. The wide beam lens antenna of claim 1, wherein the spacing between the blind holes is less than half the operating wavelength.
6. A wide beam lens antenna according to claim 1, wherein the feed is located at the focal point of the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110735459.6A CN113285235A (en) | 2021-06-30 | 2021-06-30 | Wide-beam lens antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110735459.6A CN113285235A (en) | 2021-06-30 | 2021-06-30 | Wide-beam lens antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113285235A true CN113285235A (en) | 2021-08-20 |
Family
ID=77286113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110735459.6A Withdrawn CN113285235A (en) | 2021-06-30 | 2021-06-30 | Wide-beam lens antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113285235A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4471990A1 (en) * | 2023-05-31 | 2024-12-04 | Alpha Networks Inc. | Radome and radar device using the same |
-
2021
- 2021-06-30 CN CN202110735459.6A patent/CN113285235A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4471990A1 (en) * | 2023-05-31 | 2024-12-04 | Alpha Networks Inc. | Radome and radar device using the same |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210820 |