High temperature-resistant Ka-band wide-beam receiving-transmitting antenna
A technology for transmitting and receiving antennas and wide beams, applied in antenna coupling, independent antenna unit combinations, suitable for antennas on movable objects, etc., can solve problems such as inability to meet the use requirements, low radiation efficiency, and small antenna size. Achieve the effect of optimizing low elevation angle pattern, stable metal structure performance and electrical performance, and increasing beam width
Inactive Publication Date: 2014-03-26
BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE +1
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Problems solved by technology
Microstrip antenna is the most common type of pop-up antenna, but since the electrical wavelength of Ka-band microwave equipment is very short, only about 10mm, if microstrip is used, it is not easy to process because the antenna size is too small, and the surface of high-frequency microstrip antenna Problems such as wave and dielectric substrate loss will lead to serious energy loss and low radiation efficiency, which cannot meet the use requirements
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[0023] The present invention will be further described in detail below with reference to the drawings and embodiments.
[0024] The present invention uses an open circular waveguide antenna with a choke groove as the Ka antenna scheme, and selects a circular waveguide of appropriate size as the main part of the open circular waveguide antenna, which can not only ensure single-mode transmission, but also meet the beam width and maximum gain requirements . At the same time, the waveguide antenna is easy to process, and the existing processing technology can meet the antenna accuracy requirements. The choke groove is used to broaden the beam and suppress the mutual interference between the different ports of the multiple antennas to increase the isolation. The choke groove is slightly lower than the circular waveguide radiation opening surface of the antenna, which can reflect the energy radiated by the waveguide opening; the radiation surface of the waveguide opening has a certain...
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The invention relates to a high temperature-resistant Ka-band wide-beam receiving-transmitting antenna. The high temperature-resistant Ka-band wide-beam receiving-transmitting antenna comprises an antenna main body, an antenna window covering the antenna main body as well as a first circular waveguide for receiving high frequency and a second circular waveguide for transmitting low frequency, wherein the first circular waveguide and the second circular waveguide are arranged in the antenna main body; the upper port of the first circular waveguide is a first circular waveguide opening; the upper port of the second circular waveguide is a second circular waveguide opening; the horizontal heights of the first circular waveguide opening and the second circular waveguide opening are consistent; the peripheries of the first circular waveguide opening and the second circular waveguide opening are respectively provided with three rings of metal choke grooves; and the metal choke grooves are 3 mm lower than radiation surfaces of the circular waveguide openings. The high temperature-resistant Ka-band wide-beam receiving-transmitting antenna has stable performance in a certain high temperature state. With the high temperature-resistant Ka-band wide-beam receiving-transmitting antenna adopted, receiving and transmitting sharing and high isolation of receiving and transmitting ports can be realized with a constant small-sized antenna window adopted.
Description
Technical field [0001] The invention relates to a high-temperature resistant Ka-band wide-beam transceiver antenna, in particular to a variety of Ka-band telemetry, external measurement, control, communication and other related defense fields that require the antenna to have a wide beam and high isolation of the transceiver port High temperature resistant Ka-band wide-beam transceiver antenna. Background technique [0002] With the development of aerospace measurement and control technology and the continuous development of various ultra-high-speed aircraft, the use of various equipment in the Ka band has become increasingly widespread. In order to meet the requirements of a certain ultra-high-speed gliding aircraft model, the Ka-band missile-borne antenna was developed. The specific requirements are: the Ka bomb-borne antenna is installed under the ultra-thick heat-resistant antenna window on the surface of the flying body. Since the aircraft glides in the atmosphere for a long...
Claims
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IPC IPC(8): H01Q1/28H01Q1/52H01Q13/06H01Q21/30
Inventor 郑颖王健李欣冀高凯陈海英
Owner BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE