Periodic amplitude control-based phased-array antenna system and wave beam control method

A phased array antenna and amplitude control technology, applied to antennas, antenna arrays, electrical components, etc., can solve problems such as high-cost phase shifting devices, and achieve the effects of improving reliability, reducing volume, and reducing hardware complexity
CN103401072AActive Publication Date: 2013-11-20SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2013-11-20

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Abstract

The invention discloses a periodic amplitude control-based phased-array antenna system. The periodic amplitude control-based phased-array antenna system comprises a plurality of phased-array antenna unit passages, a combiner, a power divider, a frequency converter unit and a medium frequency band pass filter unit, wherein each phased-array antenna unit passage comprises an antenna, a first radio frequency band pass filter, a duplexer, a variable gain amplifier unit, a second radio frequency band pass filter and an amplifier control unit; and the amplifier control unit periodically controls the gain of the variable gain amplifier unit. The invention also discloses a wave beam control method of the periodic amplitude control-based phased-array antenna system. By periodically controlling the amplitude of a transmitted / received radio frequency signal, combined control over the amplitude and the phase of the phased-array antenna system is realized, and directional diagram synthesis and adaptive wave beam formation of a phased-array antenna array can be realized without using a phase shift device; and the periodic amplitude control-based phased-array antenna system can be widely applied to systems requiring flexible wave beam control such as phased-array radar and electronic countermeasure.
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Description

technical field

[0001] The invention belongs to the technical field of antenna engineering, in particular to a phased array antenna system based on periodic amplitude control which controls the amplitude and phase of signals. Background technique

[0002] Phased array antenna systems are widely used in radar, navigation and electronic countermeasures and other engineering and technical fields. The basic principle of the phased array antenna system is to control the amplitude and phase of the transmitted and received signals on each array element of the phased array antenna array, so that the beam synthesized in space points to a specific direction, or forms a zero trap. It has the advantages of flexible beam pointing and comprehensive pattern.

[0003] At present, the control method of the amplitude and phase of the signal transmitted and received by the phased array antenna system mainly uses variable gain amplifiers and phase shifters, such as the AN / APG-77 active phased...

Claims

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