CN215070428U - Wide-beam lens antenna - Google Patents
Wide-beam lens antenna Download PDFInfo
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- CN215070428U CN215070428U CN202121474699.7U CN202121474699U CN215070428U CN 215070428 U CN215070428 U CN 215070428U CN 202121474699 U CN202121474699 U CN 202121474699U CN 215070428 U CN215070428 U CN 215070428U
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Abstract
The utility model discloses a wide beam lens antenna belongs to antenna technical field. The antenna comprises a feed source and a lens, wherein the lens structure is a plano-convex lens, and a concave 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. The utility model provides high with remote target communication quality, realize that high-quality large tracts of land beam covers.
Description
Technical Field
The utility model relates to antenna technical field, in particular to 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.
SUMMERY OF THE UTILITY MODEL
In view of this, 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 above purpose, the utility model adopts the following technical scheme:
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 utility model adopts the beneficial effect that above-mentioned technical scheme produced lies in:
1. the utility model discloses a lens matching layer covers in lens sandwich layer surface and formula structure as an organic whole, and the lens matching layer carries out good impedance match to the electromagnetic wave of incidenting lens and air interface, can realize the wide beam radiation of high efficiency.
2. The utility model discloses can improve the low angle of elevation gain of antenna, improve with the communication quality of remote target, realize that high-quality large area beam covers.
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 inventive labor.
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 utility model discloses a feed, lens sandwich layer, 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 |
|---|---|---|---|
| CN202121474699.7U CN215070428U (en) | 2021-06-30 | 2021-06-30 | Wide-beam lens antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121474699.7U CN215070428U (en) | 2021-06-30 | 2021-06-30 | Wide-beam lens antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215070428U true CN215070428U (en) | 2021-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121474699.7U Active CN215070428U (en) | 2021-06-30 | 2021-06-30 | Wide-beam lens antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215070428U (en) |
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2021
- 2021-06-30 CN CN202121474699.7U patent/CN215070428U/en active Active
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