CN112151967B - Luneberg lens antenna - Google Patents
Luneberg lens antenna Download PDFInfo
- Publication number
- CN112151967B CN112151967B CN201910558555.0A CN201910558555A CN112151967B CN 112151967 B CN112151967 B CN 112151967B CN 201910558555 A CN201910558555 A CN 201910558555A CN 112151967 B CN112151967 B CN 112151967B
- Authority
- CN
- China
- Prior art keywords
- luneberg lens
- linear array
- feed
- feed source
- antenna
- 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.)
- Active
Links
- 230000008054 signal transmission Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 230000001427 coherent effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a luneberg lens antenna, comprising: the feed source linear array comprises at least two feed sources which are linearly arranged, the total length of the feed source linear array is not more than the preset number times of the diameter of the luneberg lens, and the preset number is less than 1; the array extension direction of the feed source linear array is the same as the direction of the wave beam to be optimized; the feed source linear array is connected to a signal source through a combiner. By applying the embodiment of the invention, the sidelobe level of the Luneberg lens antenna can be reduced.
Description
Technical Field
The invention relates to a luneberg lens antenna and a device, in particular to a luneberg lens antenna.
Background
The luneberg lens antenna takes a spherical shape as a basic shape and comprises a luneberg lens and a feed source arranged on the luneberg lens. A luneberg lens antenna is a lens antenna that focuses electromagnetic waves through a dielectric to a focal point. It is a sphere made of dielectric material, and can converge the electromagnetic waves transmitted from all directions to a corresponding point on the surface of the lens. In the part infinitely close to the surface of the sphere, the dielectric constant of the material =1, namely the material is the same as the dielectric constant of air; the dielectric constant at the center of the sphere =2, and the dielectric constant of the material of the sphere from the surface to the center is gradually changed.
Luneberg lens antennas are generally designed for a specific target incident electromagnetic wave. The incident electromagnetic wave of the target penetrates through the surface of the sphere and then is refracted and focused on the focal point on the other surface of the sphere, the incident directions of different electromagnetic wave signals are different, and the focal point positions of convergence on the spherical surface are also different. Therefore, under the condition that the Luneberg lens antenna is a complete sphere, the angle and the azimuth of the received signal are wide, and a plurality of signals can be received simultaneously without changing the position of the lens antenna by simply moving the position of the feed source along the surface of the lens or placing a plurality of feed sources. Based on a similar principle, the Long Bo lens antenna can be used as a signal transmitting antenna for transmitting communication signals.
The level of a side lobe of an antenna radiation pattern of the conventional luneberg lens is generally about-15 dB, but the level of the side lobe is required to be not higher than-20 dB in many application scenes, so that the technical problem of high level of the side lobe exists in the prior art.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a luneberg lens antenna to solve the technical problem that the level of the sidelobe of the luneberg lens antenna is high in the prior art.
The invention solves the technical problems through the following technical scheme:
the embodiment of the invention provides a luneberg lens antenna, which comprises: the feed source linear array comprises at least two feed sources which are linearly arranged, the total length of the feed source linear array is not more than the preset number times of the diameter of the luneberg lens, and the preset number is less than 1;
the array extending direction of the feed source linear array is the same as the direction of the wave beam to be optimized;
the feed source linear array is connected to a signal source through a combiner.
Optionally, the antenna further includes: the luneberg lens is spherical;
the extension direction of a straight line formed by connecting the phase center of the feed source linear array and the center of the luneberg lens is the same as the signal transmission direction of the luneberg lens antenna.
Optionally, the antenna further includes: the luneberg lens is partially spherical, and the center of the luneberg lens is positioned on the metal reflecting plate;
the electromagnetic wave transmitted by the feed source linear array transmits signals by taking the center of the luneberg lens as a reflection point, and the transmission direction of the reflected signals is the same as the signal transmission direction of the luneberg lens antenna.
Optionally, a center-to-center distance between two adjacent feed sources in the feed source linear array is 0.2 to 0.7 λ, where λ is a wavelength of a signal emitted by the luneberg lens.
Optionally, the feed source linear array is arranged on the surface of the luneberg lens.
Optionally, the preset number is a value not greater than 0.2.
Optionally, the feed source linear array is a linear array.
Optionally, the feed source linear array is an arc array, and the circle center of the arc array is the sphere center of the luneberg lens.
Optionally, at least two feed source common dielectric plates in the feed source linear array are arranged.
Optionally, the feed sources in the feed source linear arrays are respectively arranged on independent dielectric slabs.
Compared with the prior art, the invention has the following advantages:
by applying the embodiment of the invention, the level of the side lobe is reduced by arranging the feed source linear array on the luneberg lens antenna and utilizing the far-field coherent superposition effect when the feed source linear array transmits signals.
Drawings
Fig. 1 is a schematic structural diagram of a luneberg lens antenna according to an embodiment of the present invention;
fig. 2 is a directional diagram of a luneberg lens antenna according to an embodiment of the present invention;
fig. 3 is a directional diagram of a linear array feed source of a luneberg lens antenna provided in an embodiment of the present invention.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Fig. 1 is a schematic structural diagram of a luneberg lens antenna according to an embodiment of the present invention, and as shown in fig. 1, the antenna includes: the feed source linear array 100, the feed source linear array 100 comprises at least two feed sources which are linearly arranged, the total length of the feed source linear array 100 is not more than the preset number times of the diameter of the luneberg lens 200, and the preset number is less than 1;
the array extending direction of the feed source linear array 100 is the same as the direction of the wave beam to be optimized;
the feed linear array 100 is connected to a signal source through a combiner.
In a specific implementation manner of the embodiment of the present invention, the antenna further includes: the luneberg lens 200, the luneberg lens 200 is spherical;
the extending direction of a straight line formed by connecting the phase center of the feed linear array 100 and the sphere center of the luneberg lens 200 is the same as the signal transmitting direction of the luneberg lens 200 antenna.
Fig. 2 is a directional diagram of a luneberg lens antenna according to an embodiment of the present invention; fig. 3 is a directional diagram of a linear array feed of a luneberg lens antenna according to an embodiment of the present invention, as shown in fig. 2 and 3, a luneberg lens 200 is spherical and has a diameter of 8.5 λ; λ is the wavelength of the signal emitted by the luneberg lens antenna; the linear array 100 of the feed source includes 3 feed sources, three feed sources are connected to the signal source through the combiner, and the signal transmitted by the signal source is divided into three paths after passing through the combiner and is output by three feed sources.
It is emphasized that signal combining is a conventional technique in the field of signal processing.
As shown in fig. 2, in the prior art, one of the feed source 301 and the feed source 307 included in the feed source 300 is generally used as the feed source, the sidelobe levels of the feed source 301 and the feed source 307 are all about-16 dB, and the sidelobe level corresponding to the linear feed source 100 is about-25.7 dB and is smaller than the sidelobe levels of the feed source 301 and the feed source 307.
As shown in fig. 3, the radiation pattern in the X-axis direction is better folded into the main lobe direction.
As shown in fig. 2, the beam widths of the feed source 301 to the feed source 307 are all around 7 °, and the beam width of the linear array 100 of the feed source can reach 10 °, so that the luneberg lens can have a wider beam coverage range by applying the embodiment of the present invention.
By applying the embodiment of the invention shown in figure 1, the level of the side lobe is reduced by arranging the feed source linear array on the luneberg lens antenna and utilizing the far field coherent superposition effect when the feed source linear array transmits signals.
In addition, the optimization of the luneberg lens antenna is usually the optimization of the luneberg lens, i.e. the luneberg lens, which needs to ensure the luneberg lens to have specific physical properties in a complicated mathematical modeling process, which is a long and arduous task, and the verification of theory must be restricted by the existing material preparation and structure manufacturing level. However, the feed source structure of the luneberg lens antenna is designed mainly based on the existing antenna theory and design basis, and does not involve complicated theoretical calculation and high-difficulty processing test work. Therefore, optimizing the feed structure of a luneberg lens antenna to optimize the side lobe levels is a simpler and more efficient means. By applying the embodiment of the invention, the optimization process of the luneberg lens can be simplified.
In a specific implementation manner of the embodiment of the present invention, the antenna further includes: the luneberg lens 200, the luneberg lens 200 is a part of sphere, and the centre of sphere of the luneberg lens 200 locates on metal reflecting plate;
the electromagnetic wave transmitted by the feed source linear array 100 transmits signals by taking the sphere center of the luneberg lens 200 as a reflection point, and the transmission direction of the reflected signals is the same as the signal transmission direction of the luneberg lens 200 antenna.
In practical applications, the luneberg lens 200 may be hemispherical, or one-third spherical, or one-fifth spherical; the signal transmitted by the linear array 100 of the feed source is reflected by a metal reflecting plate arranged according to the mirror image theory and then emitted.
The application of the embodiment of the invention can adapt to the luneberg lens with a non-complete spherical structure.
In a specific implementation manner of the embodiment of the present invention, in order to improve the effect of the linear feed array 100, a center distance between two adjacent feed sources in the linear feed array 100 is 0.2 to 0.7 λ, where λ is a wavelength of a signal transmitted by the luneberg lens antenna 200.
In a specific implementation manner of the embodiment of the present invention, in order to conveniently set a feed source, the feed source linear array 100 is disposed on a surface of the luneberg lens 200.
In practical applications, the feed source may also be disposed inside the luneberg lens 200.
In a specific implementation manner of the embodiment of the present invention, in order to improve the effect of the linear array 100 of the feed source, that is, reduce the level of the side lobe, the preset number is a value not greater than 0.2.
In practical application, the length of the feed linear array 100 is greater than 2.2 λ and less than or equal to the diameter of the luneberg lens 200, preferably, the length of the feed linear array 100 is greater than 2.2 λ and less than or equal to 0.5 times of the diameter of the luneberg lens 200; further preferably, the length of the feed linear array 100 is greater than 2.2 λ and is equal to or less than 0.2 times the diameter of the luneberg lens 200.
In a specific implementation manner of the embodiment of the present invention, the feed source linear array 100 is a linear array.
In a specific implementation manner of the embodiment of the present invention, in order to match the shape of the linear array 100 of the feed source with the shape of the luneberg lens 200 and further reduce the level of the side lobe, the linear array 100 of the feed source is an arc array, and the center of the arc array is the center of the luneberg lens 200.
In a specific implementation manner of the embodiment of the present invention, in order to facilitate the setting of the feed source, at least two feed source common dielectric plates in the feed source linear array are provided.
In a specific implementation manner of the embodiment of the present invention, the feed sources in the feed source linear array 100 are respectively disposed on independent dielectric plates.
In practical application, the length of the linear feed array 100 is not less than half the wavelength of the signal transmitted by the luneberg lens antenna.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A luneberg lens antenna, the antenna comprising: the feed source linear array comprises at least two feed sources which are linearly arranged, the total length of the feed source linear array is not more than the preset number times of the diameter of the luneberg lens, and the preset number is less than 1;
the array extension direction of the feed source linear array is the same as the direction of the wave beam to be optimized;
the feed source linear array is connected to a signal source through a combiner;
the extension direction of a straight line formed by connecting the phase center of the feed source linear array and the spherical center of the luneberg lens is the same as the signal transmission direction of the luneberg lens antenna;
the center distance between two adjacent feed sources in the feed source linear array is 0.2-0.7 lambda, wherein lambda is the wavelength of a signal emitted by the luneberg lens.
2. A luneberg lens antenna as claimed in claim 1, further comprising: the luneberg lens is spherical;
the extension direction of a straight line formed by connecting the phase center of the feed source linear array and the center of the luneberg lens is the same as the signal transmission direction of the luneberg lens antenna.
3. The luneberg lens antenna of claim 1, further comprising: the luneberg lens is partially spherical, and the center of the luneberg lens is positioned on the metal reflecting plate;
the electromagnetic wave transmitted by the feed source linear array transmits signals by taking the center of the luneberg lens as a reflection point, and the transmission direction of the reflected signals is the same as the signal transmission direction of the luneberg lens antenna.
4. A luneberg lens antenna according to any one of claims 2 to 3, wherein the linear array of feed elements is disposed on the surface of the luneberg lens.
5. A luneberg lens antenna according to any one of claims 2 to 3, wherein the predetermined number is a value of not more than 0.2.
6. The luneberg lens antenna of claim 1, wherein said linear array of feed elements is a linear array.
7. The luneberg lens antenna of claim 1, wherein the linear array of feed sources is an array of arcs, and the center of the array of arcs is the center of the luneberg lens.
8. The luneberg lens antenna of claim 1, wherein at least two of said linear arrays of feed sources are disposed on a common dielectric plate.
9. The luneberg lens antenna of claim 1, wherein the feed sources of the linear array of feed sources are respectively disposed on separate dielectric plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910558555.0A CN112151967B (en) | 2019-06-26 | 2019-06-26 | Luneberg lens antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910558555.0A CN112151967B (en) | 2019-06-26 | 2019-06-26 | Luneberg lens antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112151967A CN112151967A (en) | 2020-12-29 |
| CN112151967B true CN112151967B (en) | 2022-12-02 |
Family
ID=73868446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910558555.0A Active CN112151967B (en) | 2019-06-26 | 2019-06-26 | Luneberg lens antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112151967B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808260A (en) * | 2018-06-06 | 2018-11-13 | 电子科技大学 | A kind of modification cylinder/spherical surface Luneberg lens antenna based on phased array feed |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602004015955D1 (en) * | 2003-04-02 | 2008-10-02 | Sumitomo Electric Industries | RADIO WAVES LENS ANTENNA DEVICE |
| WO2009100153A1 (en) * | 2008-02-05 | 2009-08-13 | Ems Technologies, Inc. | Modal beam positioning |
| CN102176545B (en) * | 2011-01-12 | 2015-06-17 | 电子科技大学 | Electrically large highly-efficient luneberg lens antenna with the smallest layering number |
| CN108292807B (en) * | 2015-11-24 | 2021-02-02 | 株式会社村田制作所 | Luneberg lens antenna device |
| CN107123862A (en) * | 2017-04-17 | 2017-09-01 | 四川九洲电器集团有限责任公司 | A kind of Luneberg lens antenna and the method for handling electromagnetic wave |
| CN107978840B (en) * | 2017-12-25 | 2023-10-17 | 合肥若森智能科技有限公司 | Dual-polarized antenna feed source array assembly |
| CN109841956B (en) * | 2018-10-08 | 2021-02-09 | 合肥若森智能科技有限公司 | Low-profile array antenna based on luneberg lens array |
| CN109378585B (en) * | 2018-10-19 | 2019-07-26 | 电子科技大学 | The circular polarisation Luneberg lens antenna of half space wave cover |
| CN109560392A (en) * | 2018-12-06 | 2019-04-02 | 北京神舟博远科技有限公司 | A kind of low cost wide-angle wave cover phased array antenna system |
-
2019
- 2019-06-26 CN CN201910558555.0A patent/CN112151967B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808260A (en) * | 2018-06-06 | 2018-11-13 | 电子科技大学 | A kind of modification cylinder/spherical surface Luneberg lens antenna based on phased array feed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112151967A (en) | 2020-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10326208B2 (en) | Spherical lens array based multi-beam antennae | |
| US20230318195A1 (en) | Lens arrays configurations for improved signal performance | |
| US8284102B2 (en) | Displaced feed parallel plate antenna | |
| CN105789877B (en) | Four wave beam micro-strips transmission array antenna and its design method based on super surface | |
| CN109037956B (en) | Radar stealth super-surface system with beam convergence function and radar | |
| CN110165403B (en) | Wide-angle scanning deformation hemispherical dielectric lens antenna based on array feed | |
| KR101292230B1 (en) | Compact nonaxisymmetric double-reflector antenna | |
| CN114927881B (en) | Broadband two-dimensional multi-beam lens antenna | |
| JPS63502237A (en) | High-efficiency light-limited scanning antenna | |
| US11509056B2 (en) | RF lens antenna array with reduced grating lobes | |
| Abbaspour-Tamijani et al. | Enhancing the directivity of phased array antennas using lens-arrays | |
| CN112151967B (en) | Luneberg lens antenna | |
| CN102820528B (en) | Radar antenna and radar system | |
| US10559886B2 (en) | Antenna lens array for tracking multiple devices | |
| KR102147952B1 (en) | horn antenna including pattern and antenna having the same | |
| CN210074129U (en) | Multi-beam offset feed source reflector antenna | |
| CN108767496B (en) | High-gain pencil-shaped wave beam and orbital angular momentum vortex wave beam generating device | |
| CN112151949A (en) | Luneberg lens antenna | |
| Kumar et al. | A dual-band multi-layer metasurface lens | |
| CN114094351B (en) | 4TR antenna | |
| Yan et al. | A Dielectric Lens Antenna with Reconfigurable Scanning Beams for K-Band Wind Profile Radar | |
| US11509057B2 (en) | RF lens antenna array with reduced grating lobes | |
| EP4131654A1 (en) | A low profile mechanically scanning antenna with reduced sidelobe and grating lobes and large scanning domain | |
| CN112350073B (en) | Ultra-large-diameter reflecting antenna based on secondary mirror array | |
| US20230073838A1 (en) | Beamforming apparatus and beam controlling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 236000 China (Anhui) pilot Free Trade Zone, Hefei, Anhui, 4th floor, building 8, Tianyuan dike science and Technology Park, No. 66, Yunfei Road, high tech Zone, Hefei Patentee after: HEFEI RHOSOON INTELLIGENT TECHNOLOGY Co.,Ltd. Country or region after: China Address before: Room 413, Embedded R&D Building 1 #, Advanced Technology Research Institute, University of Science and Technology of China, No. 5089 Wangjiang West Road, High tech Zone, Hefei City, Anhui Province, 236000 Patentee before: HEFEI RHOSOON INTELLIGENT TECHNOLOGY Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |