Feeding source structure shared by sub-reflector and feeding source, and dual frequency band antenna constructed thereby

A technology of sub-reflector and main reflector, applied in the field of feed structure, can solve the problems of very difficult structural design, difficult requirements for antenna electrical performance, structural rigidity and structural strength, difficult to meet application requirements, etc., and achieves low design difficulty. , low cost, easy to design effect

Active Publication Date: 2009-08-12
中国航天科技集团公司第五研究院第五〇四研究所
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Problems solved by technology

Therefore, the electrical performance, structural rigidity, and structural strength requirements of the antenna corresponding to the new frequency band are also very difficult,

Method used

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  • Feeding source structure shared by sub-reflector and feeding source, and dual frequency band antenna constructed thereby
  • Feeding source structure shared by sub-reflector and feeding source, and dual frequency band antenna constructed thereby
  • Feeding source structure shared by sub-reflector and feeding source, and dual frequency band antenna constructed thereby

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Embodiment Construction

[0021] The present invention is described in detail below taking the Ka / S frequency band as an example:

[0022] In order to realize Ka / S dual-frequency sharing, the Ka frequency band receives left-handed circular polarization, transmits right-handed circular polarization, and the S frequency band receives circularly polarized waves. The Ka-band spot beam antenna adopts the form of a ring-focus antenna, which is a A compact dual-reflector antenna with the advantages of small secondary shading, low side lobes and low cross polarization. Its structure is as follows figure 1 As shown, it is mainly composed of a main reflector 10, a sub-reflector 11, a Ka-band feed source assembly 12, a locking / release device 13, a pointing structure 14, and a mounting plate 15, wherein the Ka-band feed source assembly 12 includes a corrugated horn, Composed of a circular polarizer, an orthogonal mode coupler and a rotary joint, the Ka-band feed irradiates the sub-reflector, the electromagnetic wa...

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Abstract

The invention relates to a feed source structure shared by an auxiliary reflector and a feed source and a double-frequency band antenna formed by the feed source structure; the shared feed source structure mainly comprises that: a gap ring is formed between a cutting awl and a circling part of the auxiliary reflector to form a microstrip antenna; and the double-frequency band antenna is formed by the shared feed source structure. The invention uses a Ka frequency band compact type ring-focus dual-reflecting surface antenna as an example; on the premise of not influencing the property of the Ka frequency band, the auxiliary reflector of the Ka frequency band ring-focus double-reflecting surface antenna is reconstructed to form an S-frequency band microstrip antenna and obtain the performance of the double-frequency band antenna so that the auxiliary reflector becomes the feed source of the S-frequency band to irradiate a main reflector, thereby obtaining the performance of the S-frequency band antenna. The feed source structure has a simple principle and easy realization; and the double-frequency band antenna formed by the feed source structure has a simple structure, excellent performance and wide application.

Description

technical field [0001] The invention relates to a feed source structure, in particular to a common feed source structure using a sub-reflector of a Ka frequency band antenna as an S frequency band antenna feed source and a dual frequency band antenna formed by using the feed source structure. Background technique [0002] With the continuous deepening and wide application of wireless technology, various application platforms (such as spacecraft, satellites, space probes, aircraft, etc.) need to achieve more and more tasks, which will cause the tension of the antenna layout space of the application platform . Integrating antenna structures with different performances to realize functions that originally required multiple antennas is a way to alleviate the shortage of antenna layout space, and it is also an urgent need to add new frequency applications and new functional applications. [0003] The structural integration design of antennas working in different frequency bands ...

Claims

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Application Information

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IPC IPC(8): H01Q19/10H01Q19/15H01Q15/14H01Q15/16H01Q5/00H01Q5/45
Inventor 张明涛张学刚彭健
Owner 中国航天科技集团公司第五研究院第五〇四研究所
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