Abstract
A novel low-profile bandpass frequency selective surface (FSS) is presented in this paper, which is composed of three metal layers separated by two thin dielectric substrates. The structure provides a frequency response with two transmission poles and three transmission zeros for both transverse electric (TE) and transverse magnetic (TM) polarizations. A coupling topology and an equivalent circuit model are established to further discuss the operation principle of the FSS. And the FSS is modeled and simulated in the commercial software CST MWS to validate the frequency response characteristic. Besides, simulation results indicate that the designed FSS is insensitive to the incident angles and polarizations of the incoming electromagnetic wave.
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