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Automatic calibration method for digital-analog hybrid phased-array antenna

A phased array antenna, digital-analog hybrid technology, applied in the field of communications, can solve problems such as flexibility, poor real-time performance, multiple logic resources, and difficult to guarantee calibration accuracy, so as to enhance system stability, ensure system performance, and avoid accumulated errors. Effect

Active Publication Date: 2021-11-30
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the existing phased array antenna calibration algorithms, the offline calibration algorithm has complex operation steps, poor flexibility and real-time performance, and requires more logic resources
In addition, the offline / online combined calibration algorithm calibrates the IF and RF separately, and the calibration accuracy is difficult to guarantee

Method used

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  • Automatic calibration method for digital-analog hybrid phased-array antenna
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  • Automatic calibration method for digital-analog hybrid phased-array antenna

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Embodiment Construction

[0030] In the following detailed description of the embodiments, reference will be made to the accompanying drawings which constitute the invention. The accompanying drawings show, by way of example, specific embodiments in which the invention can be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It should be noted that although the steps of the relevant methods in the present invention are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in this specific order, or that all shown operations must be performed to achieve the desired the result of.

[0031] An automatic calibration method for a digital-analog hybrid phased array antenna, used for calibrating a digital-analog hybrid phased array antenna system composed of M×N antenna units, the digital-analog hybrid phased array antenna system comprising M TRs Components...

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Abstract

The invention relates to an automatic calibration method for a digital-analog hybrid phased-array antenna, and belongs to the technical field of communication. The method is used for calibrating a phased-array antenna system composed of M * N antenna units, and the calibration process is divided into receiving calibration and transmitting calibration. According to the method, the signal-to-noise ratio of the channel can be improved by adaptively adjusting the gain or attenuation of the acquisition channel and the calibration channel, so that the calibration requirement is met, the calibration precision is ensured, the intermediate frequency channel and the radio frequency channel of the digital-analog hybrid phased-array antenna can be calibrated at the same time, and accumulated errors possibly caused by step-by-step calibration are avoided. In addition, by adjusting the emission attenuation and the receiving gain of the calibration channel, a fault channel can be eliminated, so that the system performance is ensured, and the system stability is enhanced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an automatic calibration method for a digital-analog hybrid phased array antenna. Background technique [0002] Due to factors such as hardware and environment, there will inevitably be some channel errors in the phased array antenna system, including amplitude errors and phase errors. When the amplitude and phase errors are large, it will seriously affect the beamforming and beam tracking performance of the phased array antenna. To reduce or even eliminate the influence of channel errors on the system, it is necessary to perform channel calibration on the phased array antenna system. [0003] Among the existing phased array antenna calibration algorithms, the off-line calibration algorithm has complex operation steps, poor flexibility and real-time performance, and needs to occupy more logic resources. In addition, the offline / online combined calibration algorithm calibr...

Claims

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Application Information

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IPC IPC(8): H04B17/12H04B17/21H04B17/336
CPCH04B17/12H04B17/21H04B17/336Y02D30/70
Inventor 赵柯梅立荣李阳刘又玮罗亚赛吴俊晨刘玉涛康瑞洋王洪坤杨竟松褚素杰闫晓燊李弋鹏
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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