Abstract
In this paper, a novel double-layer frequency selective surface (FSS) is proposed. Each layer consists of two semi-circle fractal elements put into a circular structure on a dielectric substrate. Simulation by CST MICROWAVE STUDIO® is conducted to testify the characteristics of the FSS. The results show that the novel structure has three resonant frequencies in the frequency band 0–30GHz with relatively high impedance, and when illuminated by waves of different incident angles and polarizations the structure performs good stability. In addition, effects of the structure's parameters on the transmission performances are discussed, which provides theoretical basis for practical applications.
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