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Satellite-borne sparse phased-array multi-beam antenna with reflector

A technology of multi-beam antennas and reflectors, which is applied to antennas, antenna arrays, electrical components, etc., can solve the problems of difficult implementation, constant beam pointing, high cost, etc., achieve good standing wave characteristics, reduce the number of feed sources, The effect of improving radiation efficiency

Inactive Publication Date: 2013-04-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional space-borne multi-beam antennas are generally composed of more than two non-phased feed sources and reflectors, but the beam space coverage is low and the beam pointing is unchanged.
The general phased array antenna is a planar array antenna whose beam direction changes rapidly. The feed network of a large phased array is complex, difficult to implement, and high in cost.

Method used

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  • Satellite-borne sparse phased-array multi-beam antenna with reflector
  • Satellite-borne sparse phased-array multi-beam antenna with reflector
  • Satellite-borne sparse phased-array multi-beam antenna with reflector

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Embodiment

[0050] Spaceborne reflector sparse phased array multi-beam antenna, such as figure 1 As shown, it includes an offset parabolic reflector 1, a feed source array 2 and a total control circuit 4. The feed amplitude and phase of the feed source array 2 are controlled by the total control circuit 4, and the electromagnetic waves radiated by the feed source array 2 are biased The parabolic reflector 1 converges and then radiates into space; the direction of the electromagnetic wave radiated from the offset parabolic reflector 1 is the +Z axis direction; the projection of the offset parabolic reflector 1 and the feed source array 2 on the X0Y plane is two A circle, wherein, the diameter of the projected circle of the offset parabolic reflector 1 is φ; wherein, the focal length of the offset parabolic reflector 1 is F, the static distance of the offset parabolic reflector 1 is H1, and the offset parabolic reflector 1 The vertical height of 1 is H2; the offset angle of offset parabolic...

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Abstract

The invention relates to a satellite-borne sparse phased-array multi-beam antenna with a reflector, and belongs to the technical field of antennas. The satellite-borne sparse phased-array multi-beam antenna comprises the offset parabolic reflector, a feed source array and a master control circuit. The feed amplitude and phase of the feed source array are controlled by the master control circuit, and electromagnetic waves radiated by the feed source array are converged via the offset parabolic reflector and then are radiated to space. The quantity of required feed source units of the antenna is low, beams can be subjected to phase control, and the satellite-borne sparse phased-array multi-beam antenna can be widely applied to satellite-borne communication, detection and positioning systems.

Description

technical field [0001] The invention relates to a sparse phased array multi-beam antenna with a space-borne reflection surface, belonging to the technical field of antennas. Background technique [0002] With the development of information technology, the spaceborne information system will play an increasingly important role in the development of the future society. A well-performing spaceborne communication, detection and positioning system has higher requirements on the antenna. [0003] The space-borne multi-beam antenna is an antenna that can generate more than two sharp beams. These sharp beams can cover a specific airspace with high gain. The multi-beam antenna can realize multiple frequency reuse, which greatly increases the communication capacity and improves satellite launch. EIRP, anti-jamming performance, and strong antenna on-orbit survivability. In recent years, the number of satellites in geosynchronous orbit has increased, and the application of space-borne m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/34H01Q19/17H01Q21/00
Inventor 刘埇司黎明卢宏达水孝忠唐海波朱思衡吕昕
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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