Complementary Frequency Selective Surface with Polarization Selective Responses

Abstract

This paper reports the design and electromagnetic performance of a new complementary frequency selective surface (CFSS) which shows polarization selectivity and good angular stability. Each CFSS unit cell only consists of a thin substrate sandwiched by a square patch array and its complementary square slot array with lateral displacement. The polarization selectivity of the proposed CFSS is determined by the displacement introduced between two arrays. An equivalent circuit model has been developed for this structure to interpret its polarization selective feature. The CFSS structure has been analyzed with full-wave simulation. The polarization selectivity of the proposed structure was verified by experiment.