A Reconfigurable Transmission-Reflection-Array Using Magnetoelectric Dipole Elements in X-band

In this letter, a reconfigurable transmission-reflection-array (TRA) operating in X-band is investigated, which combines the functionalities of the reconfigurable transmittarray and reflectarray. A receiver-transmitter structure with magneto-electric (ME) dipoles integrated with two PIN diodes is designed as the wideband TRA element. Due to the separated direct-current (DC) path that can independently control the states of two diodes with the bias voltage from a field-programmable gate array (FPGA), elements achieve the 1-dB insertion loss bandwidth covering the X-band and 1-bit phase resolution both of the transmitted and reflected waves. Then, a reconfigurable TRA with 16*16 elements is designed to verify its beamforming ability. The simulated results show that the proposed TRA enables manipulation of the reflected and transmitted wave-front, allowing for full-space control of the EM wave-front.