Multi-polarization digital beam forming antenna

Abstract

The invention discloses a multi-polarization digital beam forming antenna and provides an antenna which can be used for achieving multi-target complete-polarization beam, can be adaptive to polarization interference resistance and can be used for achieving airspace coverage. The multi-polarization digital beam forming antenna is implemented according to the following technical scheme that two dipole antennas are mutually orthogonal to form a polarization orthogonal antenna unit, airspace instantaneous coverage of complete-polarization multiple beams in four directions is achieved by the two orthogonal dipole antennas combined with digital beam formation, an output vertical polarization signal and a horizontal polarization signal are sent to a radio-frequency pre-processing unit in two paths for radio-frequency pre-processing and then are sent to a variable-frequency signal unit for down-conversion to obtain a medium-frequency signal after amplification, digital beam formation is performed on the medium-frequency signal in a digital processing unit, and four paths of digital receiving beams of a vertical polarization beam, a horizontal polarization beam, a left-handed circular polarization beam and a right-handed circular polarization beam are respectively formed. By the multi-polarization digital beam forming antenna, the multi-target complete-polarization beam is completed byrelatively high interference-resistant capability, and the defects of channel saturation and insufficient receiving sensitivity are overcome.

Description

technical field [0001] The present invention relates to a digitally polarized beamforming antenna. More specifically, it is a multi-polarization digital beamforming antenna that simultaneously realizes receiving or transmitting multiple beams for signals of different polarization modes. Background technique [0002] With the continuous development and application of radar, communication, and mobile communication technologies, digital beamforming antennas and beam steerable antennas have been widely used in various fields and have developed rapidly. Digital beamforming technology is a combination of advanced digital signal processing methods and antenna technology, through software programming can complete the self-adaptive algorithm update, without changing the hardware configuration of the antenna system to make the system more flexible, can realize multiple different The pointed beam, because the beamforming is realized by the software in the DSP, has high flexibility and...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a circuit that is simple to implement and capable of multi-target fully polarized beams in view of the shortcomings of the existing multi-target signal reception, detection, and processing, which have insufficient polarization channels and cannot detect multi-polarization information in real time. And can adaptive polarization anti-jamming, multi-polarization polarized digital beamforming antenna that can achieve airspace coverage

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