Polarization calibration method for antenna system with automatic polarization adjustment function

Abstract

The invention discloses a polarization calibration method for an antenna system with an automatic polarization adjustment function, and relates to a polarization calibration method in the field of communication. The antenna system with the automatic polarization adjustment function comprises a horizontally polarized antenna, a vertically polarized antenna, an automatic polarization adjustment module and a polarization control circuit, wherein the automatic polarization adjustment module consists of a first amplifier, a second amplifier, match circuits of the first amplifier and the second amplifier, a first numerical control phase shifter, a second numerical control phase shifter, a first numerical control attenuator, a second numerical control attenuator and a combiner / shunt; the automatic polarization adjustment function is completed by automatically adjusting an amplitude ratio of an orthogonal double-line polarization unit; and the polarization calibration process is completed by an automatic calibration method. The method has the advantages that the adjustment speed is high, the adjustment from time to time can be realized, the adjustment effect is good, and antenna outlines are not changed. The method is suitable for manufacturing the antennas with the polarization adjustment functions in satellite communication or other communication systems, in particular to low-outline satellite communication antennas of mobile carriers.

Description

technical field [0001] The invention relates to an antenna technology in the communication field, which is suitable for manufacturing an antenna system with a polarization adjustment function in satellite communication or other communication systems and a polarization calibration method thereof. Background technique [0002] At present, there are several types of antennas that can be used in communication systems that can be adjusted for polarization. Although they have their own characteristics in terms of performance, they all have certain deficiencies. [0003] 1. Manual or electric polarization adjustment can be realized by mechanically rotating the antenna or the antenna feed source, but the main disadvantages are: the adjustment speed is slow by using the mechanical rotation method; if the antenna is in the form of an array, the entire antenna needs to be rotated , increasing the complexity of the antenna structure, and when the antenna rotates around the polarization ...

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Problems solved by technology

[0003] 1. Manual or electric polarization adjustment can be realized by mechanically rotating the antenna or the antenna feed source, but the main disadvantages are: the adjustment speed is slow by using the mechanical rotation method; if the antenna is in the form of an array, the entire antenna needs to be rotated , increases the complexity of the antenna structure, and when the antenna rotates around the polarization axis, it may cause an increase in the height of the antenna

[0004] 2. Manual or electric polarization adjustment can be realized by rotating the direction of the feeding waveguide, but the main disadvantages are: this method still uses mechanical rotation, and the adjustment speed is slow; this method is only suitable for circular apertures fed in the form of waveguide Horn antennas and reflector antennas with circular aperture horns as feed sources, other types of antennas cannot use this method

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