CN209786197U - Waveguide horn array antenna with strong radiation capability - Google Patents
Waveguide horn array antenna with strong radiation capability Download PDFInfo
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- CN209786197U CN209786197U CN201920893348.6U CN201920893348U CN209786197U CN 209786197 U CN209786197 U CN 209786197U CN 201920893348 U CN201920893348 U CN 201920893348U CN 209786197 U CN209786197 U CN 209786197U
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Abstract
The utility model discloses a waveguide horn array antenna that radiation ability is strong, including Ka frequency channel waveguide horn array, ladder baffle circular polarizer, levogyration circular polarization feed network, dextrorotation circular polarization feed network, duplexer and waveguide switch, Ka frequency channel waveguide horn array includes a plurality of square bore loudspeaker monomers, the outward appearance is the ladder and gradually becomes the form in the square bore loudspeaker monomer, the free well embedded metal cross frame that is provided with of square bore loudspeaker, Ka frequency channel waveguide horn array and the two-way electric connection of ladder baffle circular polarizer, be connected with levogyration circular polarization feed network and dextrorotation circular polarization feed network on the both ends port about ladder baffle circular polarizer respectively. The utility model discloses a set up Ka frequency channel waveguide loudspeaker array, square bore loudspeaker monomer and metal cross frame, it is poor to have solved current antenna impedance matching effect, and phase error is great, the weak problem of radiation ability.
Description
Technical Field
The utility model relates to a communication equipment technical field specifically is a waveguide horn array antenna that radiating capacity is strong.
Background
the satellite communication technology is rapidly developed, the communication frequency band is developed from the L, C, X, Ku frequency band to the Ka frequency band, the reflector antenna has the advantages of simple design, high gain, easy realization and low cost, and is widely applied to the static ground satellite communication terminal, but the reflector antenna has higher profile and larger volume and is not suitable for a high-speed mobile carrier platform. The waveguide plate antenna has high efficiency, low section and flexible splicing, and can better meet the requirements of the communication-in-motion antenna. The circularly polarized antenna has more advantages in the aspects of interference resistance and fading resistance than a linear polarized antenna, and the Ka frequency band satellite communication adopts circular polarization.
The microstrip antenna has the advantage of easily realizing circularly polarized radiation, but the microstrip antenna has dielectric loss, the higher the working frequency is, the higher the antenna dielectric loss is, the lower the radiation efficiency is, compared with the microstrip antenna, the antenna of the waveguide structure does not contain a medium, has no dielectric loss, and has high radiation efficiency for the waveguide horn array antenna.
However, in the conventional method for realizing circular polarization of the waveguide horn array antenna, two orthogonal linearly polarized waves are synthesized into circular polarized waves by means of dual linear polarization separation and a circular polarizer or a 3dB bridge, and the method for realizing circular polarization requires that phases of two linearly polarized signals are strictly equal, but a processing error may cause a large phase error of the two linearly polarized signals of the antenna, and thus the radiation axial ratio of the antenna is affected.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a waveguide horn array antenna that radiating capacity is strong has solved that current antenna impedance matching effect is poor, and phase error is great, the weak problem of radiating capacity.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a waveguide horn array antenna with strong radiation capability comprises a Ka-band waveguide horn array, a stepped clapboard circular polarizer, a left-handed circular polarization feed network, a right-handed circular polarization feed network, a duplexer and a waveguide switch, the Ka frequency band waveguide horn array comprises a plurality of square caliber horn single bodies, the appearance of each square caliber horn single body is in a step gradual change shape, the middle of the square caliber horn single body is embedded with a metal cross frame, the Ka frequency range waveguide horn array is electrically connected with the stepped clapboard circular polarizer in two directions, the left end port and the right end port of the stepped clapboard circular polarizer are respectively connected with a left-hand circular polarization feed network and a right-hand circular polarization feed network, the other end of each of the left-handed circular polarization feed network and the right-handed circular polarization feed network is connected with a duplexer, a waveguide switch is installed on each duplexer, and each waveguide switch is electrically connected with each duplexer.
Preferably, the metal cross frame is embedded in the stepped layer at the uppermost end of the square caliber horn monomer.
Preferably, the Ka-band waveguide horn array is a flat plate array of 6x8 array elements.
Preferably, the stepped diaphragm circular polarizer includes a square waveguide, a stepped diaphragm, and a rectangular waveguide.
preferably, the left-hand circular polarization feed network and the right-hand circular polarization feed network are both formed by a waveguide E-plane T-type one-to-two power divider cascade mode.
Preferably, each square caliber horn unit is divided into four horn radiation units by the metal cross frame.
(III) advantageous effects
The utility model provides a waveguide horn array antenna that radiation ability is strong possesses following beneficial effect:
(1) The utility model adopts the structure of the ladder gradual change horn antenna and the metal cross frame, the working bandwidth of the horn is widened by using the method of the ladder gradual change transition instead of the inclined wall gradual change transition, the horn antenna of the inclined wall gradual change transition has the advantages of the simplest structure and easy adjustment, the defect that the impedance matching can not be well carried out and the processing is inconvenient in a relatively wide frequency band, especially under the condition that the receiving and transmitting frequency bands are far apart, the impedance matching can not be well realized by using the most basic structure, the horn antenna adopting the ladder transition realizes the impedance matching of the horn antenna by adjusting the size and the height of the opening surface of each step of the ladder horn, the antenna has good impedance matching in the double frequency bands, the metal cross frame is arranged in the uppermost step of the square caliber horn monomer, the horn radiation opening is divided into four, the equivalent is that one square caliber horn monomer is changed into 4 radiation units, the distribution of the oral surface field is more uniform and the directivity is stronger.
(2) The utility model discloses a set up Ka frequency channel waveguide horn array, waveguide horn antenna have characteristics such as efficient, the structure is simpler, easily adjust, can excite two mutually perpendicular's linear polarization mode in the square bore waveguide horn moreover, and the constant amplitude, two linear polarizations of phase difference 90 degrees can form circular polarization ripples, accord with the requirement of design high efficiency, two circular polarizations.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is an overall view of the square-caliber horn unit of the present invention;
FIG. 3 is an installation diagram of the metal cross frame of the present invention;
Fig. 4 is an overall effect diagram of the present invention.
The reference numbers in the figures are: 1. a Ka frequency band waveguide horn array; 2. a stepped diaphragm circular polarizer; 3. a left-handed circularly polarized feed network; 4. a right-hand circularly polarized feed network; 5. a duplexer; 6. a waveguide switch; 7. a square caliber horn single body; 8. metal cross frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-4, the utility model provides a technical solution: a waveguide horn array antenna with strong radiation capability comprises a Ka-band waveguide horn array 1, a stepped clapboard circular polarizer 2, a left-hand circular polarization feed network 3, a right-hand circular polarization feed network 4, a duplexer 5 and a waveguide switch 6, wherein the Ka-band waveguide horn array 1 comprises a plurality of square-caliber horn single bodies 7, the appearance of each square-caliber horn single body 7 is in a stepped gradual change shape, a metal cross frame 8 is embedded in each square-caliber horn single body 7, the Ka-band waveguide horn array 1 is electrically connected with the stepped clapboard circular polarizer 2 in a bidirectional way, the left-hand circular polarization feed network 3 and the right-hand circular polarization feed network 4 are respectively connected to the left end port and the right end port of the stepped clapboard circular polarizer 2, the other ends of the left-hand circular polarization feed network 3 and the right-hand circular polarization feed network 4 are respectively connected with a duplexer 5, the waveguide, waveguide switch 6 and duplexer 5 electric connection, the embedded setting of metal cross frame 8 is in the ladder layer of square bore loudspeaker monomer 7 topmost, Ka frequency channel waveguide loudspeaker array 1 is the flat panel array of 6x8 array element, ladder baffle circular polarizer 2 includes square waveguide, ladder baffle and rectangular waveguide, levogyration circular polarization feed network 3 and dextrorotation circular polarization feed network 4 all divide the ware cascade mode to constitute through waveguide E face T type one in two merit, levogyration circular polarization feed network 3 transmits the electromagnetic wave of polarization of one direction, dextrorotation circular polarization feed network 4 transmits the electromagnetic wave of polarization of another direction, metal cross frame 8 falls into four loudspeaker radiation units with every square bore loudspeaker monomer 7.
Working principle; the square-caliber horn antenna has the characteristics of high efficiency, simple structure, easy adjustment and the like by adopting a step gradual change type square-caliber horn single body 7, arranging a metal cross frame 8 in the uppermost step opening of the square-caliber horn single body 7, utilizing the step transition to replace the traditional inclined wall gradual change transition method to widen the working bandwidth of the horn and facilitate the processing, realizing the impedance matching of the horn antenna by adjusting the opening surface size and the height of each step of the step horn, ensuring that the antenna has good impedance matching in a dual-frequency band, arranging the metal cross frame 8 in the uppermost step of the square-caliber horn single body 7, dividing the horn radiation opening into four, equivalently changing one square-caliber horn single body 7 into 4 radiation units, ensuring that the opening surface field is distributed more uniformly and the directivity is stronger, arranging a Ka frequency band waveguide horn array 1, and having the characteristics of high efficiency, simple structure, easy adjustment and the like, and exciting two mutually vertical linear polarization modes in the square-caliber waveguide horn, the circular polarized wave can be formed by two linear polarizations with the phase difference of 90 degrees at the same amplitude, and the requirements of high efficiency and double circular polarization in design are met.
To sum up can, the utility model discloses a set up Ka frequency channel waveguide loudspeaker array 1, square bore loudspeaker monomer 7 and metal cross frame 8, it is poor to have solved current antenna impedance matching effect, and phase error is great, the weak problem of radiation ability.
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 (6)
1. The utility model provides a waveguide horn array antenna that radiating capacity is strong, includes Ka frequency channel waveguide horn array (1), ladder baffle circular polarizer (2), levogyration circular polarization feed network (3), dextrorotation circular polarization feed network (4), duplexer (5) and waveguide switch (6), its characterized in that: ka frequency channel waveguide loudspeaker array (1) is including a plurality of square bore loudspeaker monomer (7), outward appearance is the ladder and gradually becomes the form in square bore loudspeaker monomer (7), the well embedded metal cross frame (8) that is provided with of square bore loudspeaker monomer (7), Ka frequency channel waveguide loudspeaker array (1) and ladder baffle circular polarizer (2) two-way electric connection, be connected with left-handed circular polarization feed network (3) and right-handed circular polarization feed network (4) on the port of both ends about ladder baffle circular polarizer (2) respectively, the other end of left-handed circular polarization feed network (3) and right-handed circular polarization feed network (4) respectively is connected with one duplexer (5), install waveguide switch (6) on duplexer (5), waveguide switch (6) and duplexer (5) electric connection.
2. A high radiation capability waveguide horn array antenna as claimed in claim 1, wherein: the metal cross frame (8) is embedded in the step layer at the uppermost end of the square caliber loudspeaker single body (7).
3. A high radiation capability waveguide horn array antenna as claimed in claim 1, wherein: the Ka-band waveguide horn array (1) is a flat plate array of 6x8 array elements.
4. a high radiation capability waveguide horn array antenna as claimed in claim 1, wherein: the stepped diaphragm circular polarizer (2) comprises a square waveguide, a stepped diaphragm and a rectangular waveguide.
5. A high radiation capability waveguide horn array antenna as claimed in claim 1, wherein: the left-hand circular polarization feed network (3) and the right-hand circular polarization feed network (4) are both formed in a waveguide E-surface T-shaped one-to-two power divider cascade mode.
6. A high radiation capability waveguide horn array antenna as claimed in claim 1, wherein: each square caliber horn single body (7) is divided into four horn radiation units by the metal cross frame (8).
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| CN201920893348.6U CN209786197U (en) | 2019-06-11 | 2019-06-11 | Waveguide horn array antenna with strong radiation capability |
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| CN201920893348.6U CN209786197U (en) | 2019-06-11 | 2019-06-11 | Waveguide horn array antenna with strong radiation capability |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994154A (en) * | 2019-12-18 | 2020-04-10 | 上海无线电设备研究所 | Circular polarization high-efficiency radial array antenna |
| CN113193343A (en) * | 2021-04-27 | 2021-07-30 | 中国电子科技集团公司第三十八研究所 | Ka frequency channel compact type high-efficiency broadband dual-circularly-polarized antenna |
| CN113488782A (en) * | 2021-09-07 | 2021-10-08 | 星展测控科技股份有限公司 | Waveguide array antenna and communication device |
| CN113690594A (en) * | 2021-07-23 | 2021-11-23 | 华南理工大学 | Millimeter wave high-gain plane caliber antenna applied to Doppler radar |
-
2019
- 2019-06-11 CN CN201920893348.6U patent/CN209786197U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994154A (en) * | 2019-12-18 | 2020-04-10 | 上海无线电设备研究所 | Circular polarization high-efficiency radial array antenna |
| CN110994154B (en) * | 2019-12-18 | 2022-03-25 | 上海无线电设备研究所 | Circular polarization high-efficiency radial array antenna |
| CN113193343A (en) * | 2021-04-27 | 2021-07-30 | 中国电子科技集团公司第三十八研究所 | Ka frequency channel compact type high-efficiency broadband dual-circularly-polarized antenna |
| CN113690594A (en) * | 2021-07-23 | 2021-11-23 | 华南理工大学 | Millimeter wave high-gain plane caliber antenna applied to Doppler radar |
| CN113488782A (en) * | 2021-09-07 | 2021-10-08 | 星展测控科技股份有限公司 | Waveguide array antenna and communication device |
| CN113488782B (en) * | 2021-09-07 | 2021-12-07 | 星展测控科技股份有限公司 | Waveguide array antenna and communication device |
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