Design of cross polarization converter based on metasurface
In order to meet the demand for high performance of the polarization converter,a novel reflective cross polarization converter was proposed.The polarization converter based on metasurface structure consists of three parts:the metallic periodic pattern on the top layer,the dielectric substrate on the intermediate layer and the metallic plate ground.The results show that this structure can achieve cross-polarization conversion in the frequency range of 9.38-23.78 GHz with a polarization conversion ratio(PCR)of over 95％,of which PCRs are close to 100％at four resonance peaks.In addition,the conversion bandwidth is 14.4 GHz and the relative bandwidth is 86.9％.The proposed structure has the advantages of simple structure,low loss,low cost,easy processing and integration.It has broad application prospects in the fields of microwave communication,measurement,imaging and so on.
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