A Wideband Fabry-Perot Antenna with a Bianisotropic FSS Layer

This paper presents a Fabry-Pérot cavity antenna with a wide bandwidth and high gain working in k-band. The structure includes two layers, a patch as a feeding source and a bianisotropic omega frequency selective surface (FSS) layer to increase the bandwidth, the gain, and reduce the RCS. The proposed antenna has a maximum peak gain of 14.1 dBi, with an impedance bandwidth of 22.7 % (25.76 GHz–32.13 GHz) and a 3 dB gain bandwidth of 14.1 % (26 GHz–30.61 GHz) at the center frequency of 28 GHz.