Terahertz Two-dimensional Beam Scanning Antenna Based on Improved Planar Phase Shifting Surfaces

Abstract

A novel horn fed terahertz transmitarrays(TAs) antenna, which is based on improved planar phase shifting surfaces, is presented in this paper. Based on the principle of scattering-pattern shift theory on metasurfaces [2], the improved planar phase shifting surfaces (PPSSs) are designed. The improved PPSSs have low insertion loss and the phase shift range from 0° to 360°. The antenna has the advantages of higher frequency band, low profile structure, higher gain, and wider beam scanning angle. The full-wave simulation results demonstrate that the designed antenna enables beam steering in H-plane at the 99GHz-101GHz working frequency, with a peak gain of 23.6dBi at 100GHz. And the beam scanning range of the antenna reaches±35°.