Ka waveband wide-angle sweep scanning circular polarization microstrip antenna
A wide-angle scanning and microstrip antenna technology, which is applied in the field of satellite communication antennas, can solve the problems of main beam gain reduction, small beam scanning range, and large volume, and achieve the effects of large communication capacity, large beam scanning range, and wide frequency bandwidth
Pending Publication Date: 2018-03-23
CHENGDU TOPANTECH CO LTD
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Problems solved by technology
[0005] The currently used digital multi-beam antenna arrays mostly use slot arrays and horn arrays. The disadvantages of this array antenna are that it is not only bulky and overweight, but also has a small beam scanning range, generally around ±20°. Large grating lobes appear, and the gain of the main beam also drops significantly
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[0028] See Figure 1~7 .
[0029] The Ka-band wide-angle scanning circularly polarized microstrip antenna includes the following parts:
[0030] The first antenna substrate 21 is provided with a first balun feeder 24 on the front side, and a first microstrip dipole line 31 is provided on the reverse side, and the first balun feeder 24 is connected to the first signal connection terminal 42;
[0031] The second antenna substrate 22 is provided with a second balun feeder 20 on the front side, and a second microstrip dipole line 32 is provided on the reverse side, and the second balun feeder 20 is connected to the second signal connection terminal 41;
[0032] The first antenna substrate 21 and the second antenna substrate 22 are installed on the antenna floor 25, and the first antenna substrate 21 and the second antenna substrate 22 intersect;
[0033] A flat antenna floor 25 on which a floor grounding wire is set;
[0034] Four metal parasitic rods are also provided on the antenna floor ...
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The invention provides a Ka waveband wide-angle sweep scanning circular polarization microstrip antenna and relates to the technology of satellite communication antennas. The antenna comprises a firstantenna substrate, a second antenna substrate, and an antenna floor. A first Balun feed line is arranged on the front face of the first antenna substrate and a first microstrip dipole is arranged onthe back face. The first Balun feed line is connected with a first signal connection end. A second Balun feed line is arranged on the front face of the second antenna substrate and a second microstripdipole is arranged on the back face. The second Balun feed line is connected with a second signal connection end. The first antenna substrate and the second antenna substrate are installed on the antenna floor. The first antenna substrate and the second antenna substrate are crossed. A floor grounding wire is arranged on the antenna floor. Four metal parasitism bars are arranged on the antenna floor and arranged on two ends of the first antenna substrate and two ends of the second antenna substrate respectively. The first Balun feed line and the second Balun feed line are mutually insulative.The beneficial effects are that the weight is light; the wavebeam scanning range is large; the frequency band is wide; and the communication capacity is big.
Description
Technical field [0001] The invention relates to satellite communication antenna technology. Background technique [0002] Satellite communication refers to the use of artificial earth satellites as relay stations to relay radio waves, thereby realizing communication between two or more earth stations. [0003] The on-board antenna is an important part of the communication satellite's payload and has an extremely important impact on the performance of the entire satellite communication system. Among them, the wide beam (2θ 0.5 >90°) The wide-angle circularly polarized antenna has excellent characteristics such as no need for polarization tracking, accepting arbitrary polarization incoming waves, and low polarization mismatch loss in a wide angle range. It is used in mobile satellite systems and airborne radars. System and other fields have huge application potential. [0004] At the same time, satellite antennas and sophisticated radars, etc., are often expected to continuously c...
Claims
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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q21/00H01Q21/24H01Q21/29H01Q1/28
CPCH01Q1/288H01Q1/38H01Q1/48H01Q1/50H01Q21/0006H01Q21/24H01Q21/293
Inventor 蒋立平袁赤诚邹景孝
Owner CHENGDU TOPANTECH CO LTD