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Phased-array antenna calibration system and calibration method

A phased array antenna and calibration system technology, applied in antennas, antenna coupling, antenna arrays, etc., can solve the problems of calibration efficiency and calibration accuracy that cannot effectively meet calibration requirements, calibration accuracy depends on mechanical rotation accuracy, and long time.

Active Publication Date: 2020-10-30
GENERAL TEST SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the calibration scheme of the related art is intuitive and takes a long time because each antenna unit needs to be mechanically aligned, and the entire calibration accuracy depends on the mechanical rotation accuracy. The calibration efficiency and calibration accuracy cannot effectively meet the calibration requirements and need to be improved.

Method used

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  • Phased-array antenna calibration system and calibration method
  • Phased-array antenna calibration system and calibration method
  • Phased-array antenna calibration system and calibration method

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Embodiment Construction

[0053] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0054] The phased array antenna calibration system and calibration method proposed according to the embodiments of the present invention will be described below with reference to the accompanying drawings. First, the phased array antenna calibration system proposed according to the embodiments of the present invention will be described with reference to the accompanying drawings.

[0055] image 3 It is a schematic structural diagram of a phased array antenna calibration system according to an embodiment...

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Abstract

The invention discloses a phased-array antenna calibration system and calibration method. The system comprises an antenna array which comprises at least two measurement antennas and an isolation material and is used for the near-field calibration measurement of a to-be-calibrated phased-array antenna in a preset distance; an anechoic chamber, wherein the antenna array and the phased-array antennaare all arranged in the anechoic chamber; an instrument which is connected with the antenna array and the phased-array antenna so as to be matched with the antenna array to calibrate and measure the phased-array antenna. According to the calibration system provided by the embodiment of the invention, the phased-array antenna is calibrated in an electric switching mode, calibration efficiency is effectively improved, calibration precision is improved, calibration requirement is effectively met, and the calibration system is simple and easy to implement.

Description

Technical field [0001] The invention relates to the technical field of performance testing of wireless equipment, in particular to a phased array antenna calibration system and calibration method. Background technique [0002] The phased array antenna can change the pattern shape of the entire array antenna by controlling the feed amplitude and phase of the antenna elements in the array antenna, which is the so-called beamforming technology to achieve the purpose of beam scanning. Before the application of phased array technology, beam scanning was usually realized by mechanical rotation, which often had the disadvantages of extended time, narrow range, and low accuracy. The phased array antenna uses a digital phase shifter to achieve high-speed electronically controlled scanning of the antenna beam, with fast speed and high accuracy, and is widely used in communication radars, millimeter wave base stations, etc., such as vehicles, ships, and satellites. [0003] The phased array ...

Claims

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Application Information

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IPC IPC(8): H04B17/12H04B17/21H01Q3/26H01Q1/36H01Q1/50H01Q1/52H01Q21/00
CPCH04B17/12H04B17/21H01Q3/267H01Q1/36H01Q1/50H01Q1/523H01Q21/00
Inventor 漆一宏于伟
Owner GENERAL TEST SYST
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