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Method for designing partial-feed paraboloid multi-beam antenna feed array

A multi-beam antenna and design method technology, applied in the field of satellite communication systems, can solve the problems of high cost, few spot beams, and complex phase control, etc., to improve the side lobe level, avoid uneasy use, and improve standing wave ratio Effect

Inactive Publication Date: 2013-04-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

The phase control of phased array multi-beam system is very complicated and costly
The fixed multi-beam system can be divided into reflective surface type and lens type. The structure of the lens multi-beam antenna is relatively complex, expensive, and bulky, which is not suitable for large-scale satellite communication systems; and the current reflective surface multi-beam antenna, generally a The feed corresponds to one beam, and the generated spot beams are few and small in scale, which cannot achieve uniform coverage for the specified spatial angle

Method used

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  • Method for designing partial-feed paraboloid multi-beam antenna feed array
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  • Method for designing partial-feed paraboloid multi-beam antenna feed array

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Embodiment Construction

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] The optimized embodiment of the present invention takes the generation of more than 300 high-gain, narrow beams uniformly covering the 4° spatial half-angle conical range with 8 fixed-point beams as an example to illustrate the design method of the multi-beam antenna feed array of the offset parabolic reflector , the specific steps are:

[0040] Step 1. Determine the primary face diameter of the offset parabolic reflector antenna.

[0041] Depend on figure 1 It can be seen that the off-feed parabolic multi-beam antenna described in the present invention includes a main reflector 1 and a feed source array area 2 . Circle 3 represents that the projection of the main reflector on the focal plane is a circle. In this optimized embodiment, the gain is required to be above 46dB, and the diameter of the reflecting surface can be sele...

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Abstract

The invention discloses a method for designing partial-feed paraboloid multi-beam antenna feed array and is applicable to a satellite communication system. A reflection-side multi-beam antenna adopts a primary feed utilizing a feed array as paraboloid. The principle of forming multiple beams includes beams of the paraboloid antenna are deviated by means of transverse focus offset of the feed. According to the structural size of the integral antenna system and design procedure of feed array arrangement, a novel feed array layout is provided. The number of generable spot beams is twice times of practical feed number, all beams are tightly arranged, appointed spatial angle can be uniformly covered, and each spot beam has electrical characteristics of good gain uniformity, low minor lobe level, small beam width, high pointing accuracy and the like. The method for designing partial-feed paraboloid multi-beam antenna feed array is directly used for satellite-borne equipment or ground control communication station and has wide potential application and typical application value in the satellite communication system.

Description

technical field [0001] The invention relates to a design method of an offset parabolic multi-beam antenna feed source array, which is suitable for a satellite communication system. Background technique [0002] The satellite radio system is an important technical means to obtain information from space and has an irreplaceable role. The satellite communication system can be timely, accurate, comprehensive and reliable, and at the same time, it can overcome various limitations in geographical coverage and conduct various observations and contacts on the ground, air and sea from the orbit of the satellite. In the satellite communication system, whether it is ground-mounted or ship-borne communication equipment, or a large-scale control transfer station on the ground, or various communication satellites in space orbit, transponders and antennas of various frequency bands are installed. Radio signals at sea, in the air, and on satellites transmit various types of data. However,...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q19/17
Inventor 刘埇司黎明唐海波水孝忠吕昕孙厚军
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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