Method and device for a high polarization isolation fence

A design method for a high polarization isolation fence, wherein the high polarization isolation fence includes a plurality of grating strips arranged along a first direction;

• the first direction is set parallel to a polarization direction of a feed antenna;
• the feed antenna has a feed aperture;
• the design method includes following steps:
• setting materials, application environment, and initial structural parameters of the high polarization isolation fence to form an initialized high polarization isolation fence;
• the initial structural parameters at least include:
• a distance between the high polarization isolation fence and the feed aperture, a center distance between adjacent grating strips, a length of a single grating strip, a width of a single grating strip, a total length and total width of the high polarization isolation fence, and shapes of the grating strip;
• and
• performing performance tests on the initialized high polarization isolation fence to obtain performance parameters of an antenna with the initialized high polarization isolation fence and without the high polarization isolation fence loaded;
• the performance parameters of the antenna at least include:
• a cross-polarization signal strength within a 3 dB beamwidth range of the antenna, a main polarization echo signal strength of the antenna, and an antenna radiation pattern;
• and
• debugging the initial structural parameters of the initialized high polarization isolation fence according to the performance parameters of the antenna to determine an optimization range corresponding to each structural parameter;
• and
• calculating the correspondence between the optimization range of each structural parameter and attribute parameters of the feed antenna, and obtaining a target high polarization isolation fence based on the optimization range corresponding to each structural parameter and the performance parameters of the antenna of the initialized high polarization isolation fence.