CN113451779A - Low cross polarization dual-polarized waveguide slot array antenna - Google Patents
Low cross polarization dual-polarized waveguide slot array antenna Download PDFInfo
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- CN113451779A CN113451779A CN202110532261.8A CN202110532261A CN113451779A CN 113451779 A CN113451779 A CN 113451779A CN 202110532261 A CN202110532261 A CN 202110532261A CN 113451779 A CN113451779 A CN 113451779A
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- 238000005388 cross polarization Methods 0.000 title claims abstract description 31
- 230000010287 polarization Effects 0.000 claims abstract description 153
- 238000002955 isolation Methods 0.000 claims abstract description 18
- 230000005855 radiation Effects 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000009977 dual effect Effects 0.000 claims description 11
- 230000009466 transformation Effects 0.000 claims description 4
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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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
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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Abstract
The invention discloses a low-cross polarization dual-polarized waveguide slot array antenna which comprises a vertical polarization antenna array and a horizontal polarization antenna array, wherein the vertical polarization antenna array comprises a vertical polarization slot waveguide A, a vertical polarization slot waveguide B, a vertical polarization wave homoconversion and a vertical polarization waveguide load, and the horizontal polarization antenna array comprises a horizontal polarization slot waveguide A, a horizontal polarization slot waveguide B, a horizontal polarization wave homoconversion and a horizontal polarization waveguide load. According to the invention, the isolation step is designed between adjacent gaps on the horizontal polarization gap waveguide, so that the effect of inhibiting cross polarization is achieved; the isolation step on the horizontal polarization slot waveguide is connected with the vertical polarization slot waveguide, so that the vertical polarization slot waveguide plays a role of a choke groove for the horizontal polarization slot waveguide, and the effect of inhibiting cross polarization is also played.
Description
Technical Field
The invention relates to the technical field of waveguide slot array antennas, in particular to a low-cross-polarization dual-polarized waveguide slot array antenna.
Background
The waveguide slot array antenna has the advantages of high efficiency, compact structure, easy processing, easy realization of high gain, low sidelobe and the like, and is widely applied to the field of radar and microwave communication. The dual-polarized antenna can simultaneously form a pair of electromagnetic waves with orthogonal polarization and the same frequency, and can alternatively or simultaneously transmit or receive two linear polarized waves with orthogonal polarization.
In the field of polarized weather radar, the dual-polarized antenna is used as a key component of a radar system, and can provide more useful echo information and parameters for the dual-polarized radar system.
The existing dual-polarization radar antenna mainly comprises a dual-polarization reflector antenna and a dual-polarization microstrip array antenna. The dual-polarized reflector antenna utilizes the servo drive antenna to perform mechanical scanning, the beam shape of the dual-polarized reflector antenna is fixed, and the scanning mode is solidified, so that the dual-polarized reflector antenna cannot meet the application requirements of the current meteorological radar. The dual-polarized microstrip array antenna adopts a phased array system, has excellent beam reconstruction capability and flexible beam scanning capability through a dual-polarized microstrip patch antenna unit array, is limited to the bandwidth performance of the microstrip patch antenna and a feed mode of serial feed, and cannot simultaneously meet the use requirements of large array antennas on high gain, low side lobe and bandwidth.
The dual-polarized waveguide slot array antenna has the advantage of easy control of shaping, and is easy to realize high gain and low side lobe. However, the traditional dual-polarization waveguide slot array has poor cross polarization performance because the horizontal polarization antenna array adopts a waveguide narrow-edge oblique slot mode. Particularly, when large-angle scanning is carried out, the cross polarization performance is obviously deteriorated, and the overall performance of the radar system is seriously influenced. In order to meet the system requirements of the current dual-polarization radar, a dual-polarization waveguide slot array antenna with low cross polarization performance, controllable cost and easiness in processing is urgently needed.
Disclosure of Invention
The invention aims to provide a low-cross polarization dual-polarized waveguide slot array antenna to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a low cross polarization dual-polarized waveguide slot array antenna comprises a vertical polarization antenna array and a horizontal polarization antenna array, wherein the vertical polarization antenna array comprises a vertical polarization slot waveguide A, a vertical polarization slot waveguide B, a vertical polarization wave simultaneous transformation and a vertical polarization waveguide load, and the horizontal polarization antenna array comprises a horizontal polarization slot waveguide A, a horizontal polarization slot waveguide B, a horizontal polarization wave simultaneous transformation and a horizontal polarization waveguide load;
furthermore, the vertical polarization slot waveguide A is a single ridge-shaped wide-edge longitudinal slot radiation waveguide, one end of the vertical polarization slot waveguide A is in screwed connection with the vertical polarization wave and is converted, and the other end of the vertical polarization slot waveguide A is in screwed connection with the vertical polarization waveguide load;
further, the vertical polarized wave is converted into a single ridge waveguide coaxial converter, and the vertical polarized waveguide load is a single ridge waveguide load;
furthermore, the vertical polarization slot waveguide B is also a single ridge-shaped wide-side longitudinal slot radiation waveguide, the slot position on the wide side of the vertical polarization slot waveguide B and the vertical polarization waveguide A are in a mirror symmetry relationship, and the connection mode of the other vertical polarization waves with conversion and vertical polarization waveguide load is the same as that of the vertical polarization waveguide A;
furthermore, the horizontal polarization slot waveguide A is a rectangular narrow-side oblique slot radiation waveguide, one end of the horizontal polarization slot waveguide A is in screwed connection with the horizontal polarization wave and the other end of the horizontal polarization slot waveguide A is in screwed connection with a horizontal polarization waveguide load;
furthermore, the horizontal polarization wave is simultaneously converted into a rectangular waveguide coaxial converter, the horizontal waveguide load is a rectangular waveguide load, and the difference from the traditional narrow-side oblique-slit radiation waveguide is that the narrow-side radiation wall and the two wide walls of the horizontal polarization slit waveguide are provided with isolation steps;
furthermore, the isolation step is positioned between two adjacent radiation slits on the horizontal polarization slit waveguide, and an isolation step is processed between every two adjacent radiation slits;
furthermore, the horizontal polarization slot waveguide B is also a rectangular slot waveguide, the oblique direction of the slot on the waveguide of the rectangular slot waveguide is in mirror symmetry with the horizontal polarization waveguide a, and the connection mode of the horizontal polarization slot waveguide B and the horizontal polarization waveguide is the same as that of the horizontal polarization slot waveguide a in the same conversion and horizontal polarization waveguide load;
furthermore, the vertical polarization slot waveguide and the horizontal polarization slot waveguide are installed at intervals, and the lower surface of the isolation step on the horizontal polarization slot waveguide is connected with the upper surface of the vertical polarization slot waveguide.
Compared with the prior art, the invention has the beneficial effects that:
1. on the basis of the traditional dual-polarized waveguide slot array, the isolation steps are designed between adjacent slots on the horizontal polarized slot waveguide, so that the effect of inhibiting cross polarization is achieved;
2. according to the invention, the isolation step on the horizontal polarization slot waveguide is connected with the vertical polarization slot waveguide, and the vertical polarization slot waveguide plays a role of a choke groove for the horizontal polarization slot waveguide, thereby playing a role of inhibiting cross polarization; in a full frequency band range, the gain of the dual-polarized waveguide slot array antenna is larger than 39dB, the sidelobe level is lower than-26 dB, the cross polarization of the antenna in a +/-36-degree scanning airspace is lower than-25 dB, and the non-grating-lobe scanning range reaches +/-45 degrees, which is the performance which cannot be achieved by the traditional dual-polarized waveguide slot array; the whole antenna is simple in structure, easy to process and free of debugging.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a low cross polarization dual-polarized waveguide slot array antenna according to the present invention;
fig. 2 is a partial close-up schematic view of a low cross polarization dual polarization waveguide slot array antenna of the present invention;
fig. 3 is a schematic diagram of an actual measurement result of an antenna azimuth plane normal directional pattern of the low cross polarization dual-polarized waveguide slot array antenna of the present invention;
fig. 4 is a schematic diagram of an actual measurement result of an antenna pitching 36-degree scanning directional pattern of the low-cross-polarization dual-polarized waveguide slot array antenna.
In the figure: 1. a vertically polarized slot waveguide a; 2. a vertically polarized slot waveguide B; 3. converting the vertical polarized waves; 4. a vertically polarized waveguide load; 5. a horizontally polarized slot waveguide a; 6. a horizontally polarized slot waveguide B; 7. converting the horizontal polarized waves; 8. a horizontally polarized waveguide load; 9. isolating the steps.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
a low cross polarization dual polarization waveguide slot array antenna comprises a vertical polarization antenna array and a horizontal polarization antenna array, wherein the vertical polarization antenna array comprises a vertical polarization slot waveguide A1, a vertical polarization slot waveguide B2, a vertical polarization wave common conversion 3 and a vertical polarization waveguide load 4, and the horizontal polarization antenna array comprises a horizontal polarization slot waveguide A5, a horizontal polarization slot waveguide B6, a horizontal polarization wave common conversion 7 and a horizontal polarization waveguide load 8;
in the invention, a vertical polarization slot waveguide A1 is a single ridge-shaped wide-edge longitudinal slot radiation waveguide, one end of which is in spiral connection with a vertical polarization wave co-conversion 3, and the other end of which is in spiral connection with a vertical polarization waveguide load 4;
in the invention, a vertical polarized wave co-conversion 3 is a single-ridge waveguide coaxial converter, and a vertical polarized waveguide load 4 is a single-ridge waveguide load;
in the invention, the vertical polarization slot waveguide B2 is also a single ridge-shaped wide-side longitudinal slot radiation waveguide, the slot position on the wide side of the vertical polarization slot waveguide B2 and the vertical polarization waveguide A are in mirror symmetry, and the connection mode of the rest vertical polarization waves, the conversion 3 and the vertical polarization waveguide load 4 is the same as that of the vertical polarization waveguide A;
in the invention, a horizontal polarization slot waveguide A5 is a rectangular narrow-side oblique slot radiation waveguide, one end of which is in spiral connection with a horizontal polarization wave homoconversion 7, and the other end of which is in spiral connection with a horizontal polarization waveguide load 8;
in the invention, the horizontal polarization wave co-conversion 7 is a rectangular waveguide coaxial converter, the horizontal waveguide load is a rectangular waveguide load, and the difference from the traditional narrow-side oblique-slit radiation waveguide is that the narrow-side radiation wall and two wide walls of the horizontal polarization slit waveguide are provided with isolation steps 9;
in the invention, the isolation step 9 is positioned between two adjacent radiation seams on the horizontal polarization slot waveguide, and the isolation step 9 is processed between every two adjacent radiation seams;
in the invention, the horizontal polarization slot waveguide B6 is also a rectangular slot waveguide, the oblique direction of the slot on the waveguide is in mirror symmetry with the horizontal polarization waveguide A, and the connection mode of the horizontal polarization slot waveguide B6 and the horizontal polarization waveguide A is the same as that of the horizontal polarization slot waveguide A5 with the same conversion 7 and the horizontal polarization waveguide load 8;
in the invention, the vertical polarization slot waveguide and the horizontal polarization slot waveguide are arranged at intervals, and the lower surface of the isolation step 9 on the horizontal polarization slot waveguide is connected with the upper surface of the vertical polarization slot waveguide.
The working principle is as follows: when the antenna is used, when the antenna works, radio frequency signals are input from inlets of a vertical polarized wave common converter 3 and a horizontal polarized wave common converter 8 in a time sharing or simultaneous mode, after the wave common converter, the signals enter a vertical polarized slot waveguide A1, a vertical polarized slot waveguide B2, a horizontal polarized slot waveguide A5 and a horizontal polarized slot waveguide B6, then the signals are radiated to the space through waveguide slots to form vertical polarized and horizontal polarized electromagnetic waves, and redundant energy in the slot waveguides is absorbed by waveguide loads; on the basis of a traditional dual-polarized waveguide slot array, an isolation step is designed between adjacent slots on a horizontal polarized slot waveguide, so that the effect of inhibiting cross polarization is achieved; the isolation step on the horizontal polarization slot waveguide is connected with the vertical polarization slot waveguide, so that the vertical polarization slot waveguide plays a role of a choke groove for the horizontal polarization slot waveguide, and the effect of inhibiting cross polarization is also played; in a full frequency band range, the gain of the dual-polarized waveguide slot array antenna is larger than 39dB, the sidelobe level is lower than-26 dB, the cross polarization of the antenna in a +/-36-degree scanning airspace is lower than-25 dB, and the non-grating-lobe scanning range reaches +/-45 degrees, which is the performance which cannot be achieved by the traditional dual-polarized waveguide slot array; the whole antenna is simple in structure, easy to process and free of debugging.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A low cross polarization dual polarization waveguide slot array antenna comprises a vertical polarization antenna array and a horizontal polarization antenna array, and is characterized in that: the vertical polarization antenna array comprises a vertical polarization slot waveguide A (1), a vertical polarization slot waveguide B (2), a vertical polarization wave simultaneous transformation (3) and a vertical polarization waveguide load (4), and the horizontal polarization antenna array comprises a horizontal polarization slot waveguide A (5), a horizontal polarization slot waveguide B (6), a horizontal polarization wave simultaneous transformation (7) and a horizontal polarization waveguide load (8).
2. The low cross polarization dual polarized waveguide slot array antenna according to claim 1, wherein: the vertical polarization slot waveguide A (1) is a single ridge-shaped wide-side longitudinal slot radiation waveguide, one end of the vertical polarization slot waveguide A is in threaded connection with the vertical polarization wave co-transformation device (3), and the other end of the vertical polarization slot waveguide A is in threaded connection with the vertical polarization waveguide load (4).
3. The low cross polarization dual polarized waveguide slot array antenna according to claim 1, wherein: the vertical polarization wave co-conversion device (3) is a single-ridge waveguide coaxial converter, and the vertical polarization waveguide load (4) is a single-ridge waveguide load.
4. The low cross polarization dual polarized waveguide slot array antenna according to claim 1, wherein: the vertical polarization slot waveguide B (2) is also a single ridge-shaped wide-side longitudinal slot radiation waveguide, the slot position on the wide side of the vertical polarization slot waveguide B and the vertical polarization waveguide A are in mirror symmetry, and the connection mode of the rest vertical polarization waves with the conversion (3) and the vertical polarization waveguide load (4) is the same as that of the vertical polarization waveguide A.
5. The low cross polarization dual polarized waveguide slot array antenna according to claim 1, wherein: the horizontal polarization slot waveguide A (5) is a rectangular narrow-side oblique slot radiation waveguide, one end of the horizontal polarization slot waveguide A is in threaded connection with a horizontal polarization wave co-transformation device (7), and the other end of the horizontal polarization slot waveguide A is in threaded connection with a horizontal polarization waveguide load (8).
6. The low cross polarization dual polarized waveguide slot array antenna according to claim 1, wherein: the horizontal polarization wave co-conversion device (7) is a rectangular waveguide coaxial converter, the horizontal waveguide load is a rectangular waveguide load, and compared with the traditional narrow-side oblique-slit radiation waveguide, the horizontal polarization wave co-conversion device is characterized in that the narrow-side radiation wall and the two wide walls of the horizontal polarization slit waveguide are provided with isolation steps (9).
7. The low cross polarization dual polarized waveguide slot array antenna of claim 8, wherein: the isolation step (9) is positioned between two adjacent radiation slits on the horizontal polarization slit waveguide, and the isolation step (9) is processed between every two adjacent radiation slits.
8. The low cross polarization dual polarized waveguide slot array antenna according to claim 1, wherein: the horizontal polarization slot waveguide B (6) is also in mirror symmetry with the horizontal polarization waveguide A due to the rectangular slot waveguide, and the connection mode of the horizontal polarization slot waveguide B (6) and the horizontal polarization waveguide A with the same conversion (7) and the horizontal polarization waveguide load (8) is the same as that of the horizontal polarization slot waveguide A (5).
9. The low cross polarization dual polarized waveguide slot array antenna according to claim 1, wherein: the vertical polarization slot waveguide and the horizontal polarization slot waveguide are arranged at intervals, and the lower surface of an isolation step (9) on the horizontal polarization slot waveguide is connected with the upper surface of the vertical polarization slot waveguide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532261.8A CN113451779B (en) | 2021-05-17 | Dual-polarized waveguide slot array antenna with low cross polarization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532261.8A CN113451779B (en) | 2021-05-17 | Dual-polarized waveguide slot array antenna with low cross polarization |
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| Publication Number | Publication Date |
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| CN113451779A true CN113451779A (en) | 2021-09-28 |
| CN113451779B CN113451779B (en) | 2024-05-28 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070069966A1 (en) * | 2005-09-27 | 2007-03-29 | Elta Systems Ltd. | Waveguide slot antenna and arrays formed thereof |
| KR20090105985A (en) * | 2008-04-04 | 2009-10-08 | 국방과학연구소 | Dual Polarization Slotted Waveguide Array Antenna |
| US20120038530A1 (en) * | 2010-08-10 | 2012-02-16 | Victory Microwave Corporation | Dual Polarized Waveguide Slot Array and Antenna |
| CN203166096U (en) * | 2013-01-28 | 2013-08-28 | 南京信大电子科技有限公司 | High-gain low-loss X-waveband ship navigation radar antenna |
| CN108321553A (en) * | 2018-04-02 | 2018-07-24 | 珠海纳睿达科技有限公司 | Dual polarization Waveguide slot array antenna |
| CN108777366A (en) * | 2018-04-18 | 2018-11-09 | 西安电子科技大学 | A kind of slotted coaxial antenna for realizing 45 ° of inclined polarizations of horizontal omnidirectional radiation |
| CN111983617A (en) * | 2020-07-15 | 2020-11-24 | 中国人民解放军国防科技大学 | Dual-polarization phased array weather radar |
| CN112382853A (en) * | 2020-09-18 | 2021-02-19 | 上海无线电设备研究所 | Full-shunt-feed common-caliber dual-polarized waveguide slot filter antenna array system |
| CN212848848U (en) * | 2020-07-15 | 2021-03-30 | 中国人民解放军国防科技大学 | Dual-polarization phased array weather radar antenna array |
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070069966A1 (en) * | 2005-09-27 | 2007-03-29 | Elta Systems Ltd. | Waveguide slot antenna and arrays formed thereof |
| KR20090105985A (en) * | 2008-04-04 | 2009-10-08 | 국방과학연구소 | Dual Polarization Slotted Waveguide Array Antenna |
| US20120038530A1 (en) * | 2010-08-10 | 2012-02-16 | Victory Microwave Corporation | Dual Polarized Waveguide Slot Array and Antenna |
| CN203166096U (en) * | 2013-01-28 | 2013-08-28 | 南京信大电子科技有限公司 | High-gain low-loss X-waveband ship navigation radar antenna |
| CN108321553A (en) * | 2018-04-02 | 2018-07-24 | 珠海纳睿达科技有限公司 | Dual polarization Waveguide slot array antenna |
| CN108777366A (en) * | 2018-04-18 | 2018-11-09 | 西安电子科技大学 | A kind of slotted coaxial antenna for realizing 45 ° of inclined polarizations of horizontal omnidirectional radiation |
| CN111983617A (en) * | 2020-07-15 | 2020-11-24 | 中国人民解放军国防科技大学 | Dual-polarization phased array weather radar |
| CN212848848U (en) * | 2020-07-15 | 2021-03-30 | 中国人民解放军国防科技大学 | Dual-polarization phased array weather radar antenna array |
| CN112382853A (en) * | 2020-09-18 | 2021-02-19 | 上海无线电设备研究所 | Full-shunt-feed common-caliber dual-polarized waveguide slot filter antenna array system |
Non-Patent Citations (3)
| Title |
|---|
| 于洋: "Ku波段双极化天线研究", 中国优秀硕士学位论文全文数据库, 1 February 2014 (2014-02-01) * |
| 孟明霞;丁晓磊;张凤林;胡皓全;: "双极化波导缝隙阵的设计", 遥测遥控, no. 01 * |
| 宋国栋;李建新;张金平;高铁;: "新型双极化波导缝隙天线研究", 现代雷达, no. 12 * |
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