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Ultra-wideband spot beam loop focus antenna

A ring-focus antenna and ultra-wideband technology, which is applied to antennas, antenna parts, and devices that enable antennas to work in different bands at the same time, to achieve the effect of compact structure and high antenna efficiency

Pending Publication Date: 2022-08-09
BEIJING INST OF SPACECRAFT SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, the current research on ring-focus antennas is mostly focused on beamforming, zoom design, lightweight structures, and new materials, and there are few researches on ultra-wideband (bandwidth not less than twice the frequency range) ring-focus antennas.

Method used

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  • Ultra-wideband spot beam loop focus antenna
  • Ultra-wideband spot beam loop focus antenna
  • Ultra-wideband spot beam loop focus antenna

Examples

Experimental program
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Effect test

Embodiment 1

[0034] This embodiment provides an ultra-wideband spot beam loop focus antenna, which can achieve dual circular polarization spot beam coverage in an ultra-wideband, and each polarization corresponds to a separate feed port, the dual circular polarizations work simultaneously, and the structure Compact and efficient antenna.

[0035] like figure 1 As shown, the ring focus antenna includes: a main reflection surface 1, a secondary reflection surface 2, a feed component 3, a coupler component 4, a semi-rigid cable 5 and a support rod 6; and the center operating frequency of the ring focus antenna is 11GHz, The bandwidth is not less than twice the frequency range; the secondary reflection surface 2 is fixed on the main reflection surface 1 through three or more (preferably three evenly arranged, with stable support and small occlusion) support rods 6; the feed component 3 and the coupler component 4 are both It is directly installed on the inner bottom of the main reflection sur...

Embodiment 2

[0050] On the basis of Embodiment 1, the feed component 3 is located on the axis of the main reflection surface 1 and the sub-reflection surface 2 , and a set distance is reserved with the sub-reflection surface 2 .

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Abstract

The invention discloses an ultra-wideband spot beam loop focus antenna, which comprises a main reflecting surface, an auxiliary reflecting surface, a feed source assembly and a coupler assembly, wherein the bandwidth of the ultra-wideband is not less than two octaves; the auxiliary reflecting surface is fixed on the main reflecting surface through more than three supporting rods; the feed source assembly and the coupler assembly are both installed at the inner bottom of the main reflecting surface, the feed source assembly is provided with two ports, the coupler assembly is provided with four ports, the two ports of the feed source assembly are correspondingly connected with two ports of the coupler assembly, the other two ports of the coupler assembly serve as two input and output ports of the ring focus antenna, and the two input and output ports are connected with the coupler assembly. And one input / output port corresponds to left-hand circular polarization, and the other input / output port corresponds to right-hand circular polarization.

Description

technical field [0001] The invention relates to the technical field of microwave antennas, in particular to an ultra-wideband spot beam loop focus antenna. Background technique [0002] The ring focus antenna is also called the parabolic focal axis offset axisymmetric double mirror antenna, which occupies a unique position in the spaceborne communication antenna, especially in the small and medium spaceborne communication antenna, the primary occlusion caused by the feed source is smaller than the secondary reflection antenna. The advantage of secondary occlusion caused. In addition, the feed source does not block the geometric optical reflection of the secondary reflector, and the VSWR of the whole ring focus antenna basically depends on the voltage standing wave ratio of the feed source, which makes the voltage standing wave ratio of the whole ring focus antenna easy to design. The polarization discrimination rate is also high. Another advantage of the ring focus antenna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/25H01Q5/50H01Q5/55H01Q1/00H01Q15/16H01Q19/12
CPCH01Q5/25H01Q5/50H01Q1/002H01Q5/55H01Q15/16H01Q19/12
Inventor 马炳鲁帆段江年刘志佳姜华薛欣周怀安董楠杨小勇
Owner BEIJING INST OF SPACECRAFT SYST ENG
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