Reconfigurable terahertz beam steering via an independently controlled microstructure embedded with diodes

This paper designs reconfigurable terahertz beam steering via an independently controlled microstructure embedded with diodes. It can be independently electrically tuned for three-dimensional (3D) beam control. The change in the reactance characteristics of the varactor diode affects the reflection characteristics of the microstructure. The independently controlled microstructure based on the varactor diode obtains a phase shift about 180° at 360-372 GHz, and efficiency> 90%. This work promotes the implementation of 3D terahertz beam control.