High-Gain Reconfigurable Antenna System Using PIN-Diode-Switched Frequency Selective Surfaces for 3.5 GHz 5G Application

This paper presents a high-gain reconfigurable antenna that uses PIN-diode-switched frequency selective surfaces (FSSs). The proposed antenna is prototyped for 5G applications, operating at 3.5 GHz. Numerical characterization of the structure is performed using CST Microwave Studio. Four cases of diode configurations are analyzed, confirming the design approach of the circuit for steering the beam and enhancing the gain.