Calibration method of accurately testing polarization component of two perpendicular lines of antenna

Abstract

The invention provides a calibration method of accurately testing a polarization component of two perpendicular lines of an antenna. Through the calibration method, the calibration for dual polarizing antenna channel amplitude phase consistency and the improvement of cross polarization performance are achieved. The calibration method of accurately testing the polarization component of the two perpendicular lines of the antenna utilizes the following technical scheme to achieve that a dual polarizing antenna channel is connected with a vector network analyzer and a rotary signal-sending linear polarization auxiliary calibration antenna, two lines of output of a dual polarization probe of a receiving end is transmitted to the vector network analyzer to acquire two time-dependent plural signal curves of polarization channels, and the phase equalization, the amplitude consistency and the cross polarization isolation of the two polarization channels are read according to the two curves. The calibration method of accurately testing the polarization component of the two perpendicular lines of the antenna can be applied to a commonly used dual polarization open waveguide in near-field test calibration, or a commonly used dual polarization antenna in an antenna far-field test, or other dual polarization antennas in application.

Description

technical field [0001] The invention relates to a method for calibrating the amplitude-phase consistency of the polarized channels of a dual-linearly polarized antenna for improving cross-polarized performance. Background technique [0002] In the prior art, for a dual-polarized antenna used to transmit and receive orthogonal linearly-polarized signals, whether the cross-polarization is good or bad has a great effect on system performance. Most of the existing methods are designed to improve the cross-polarization performance to achieve high polarization isolation. [0003] In the far-field and near-field measurements of the antenna, in order to realize the test of the circularly polarized antenna, one method is to test the two orthogonal linearly polarized components of the antenna, and then synthesize the two linearly polarized components into the final circularly polarized Antenna parameters. In order to obtain accurate test results, the cross-polarization performance o...

AI Technical Summary

Problems solved by technology

Therefore, it requires a high cost to manufacture a dual-linear polarized antenna with high polarization isolation and good amplitude and phase consistency through design and processing.

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