Developing wideband antenna based on the metamaterial and dielectric silicon load for THz spectrum

Abstract

Abstract THz antenna with wide bandwidth and high Q-factor is interesting for various application including 6G application and THz sensing and controlling the surface current of the antenna is known as a technique for bandwidth enhancement. The slot antenna with metasurface is a good candidate for this aim. In this research, we have suggested a multilayer slot antenna with metamaterial load to provide wide bandwidth which covers the 0.38 to 0.57 THz with bandwidth of 40%. The metamaterial loads make various paths for the current on the surface of the antenna that makes possible achieving the wider bandwidth. The proposed antenna has gain of 4 dBi. To achieve higher bandwidth the dielectric silicon (Si) load is placed over the metasurface. The result shows that the height and form of the Si element can impact the bandwidth of the antenna. To modify the results of the antenna, the shape, height and width of the dielectric load over the antenna is examined. The antenna bandwidth is enhanced more than 100% and it covers 0.371 to 0.616 THz with 49% bandwidth. The proposed antenna is simulated with full wave time domain technique of FIT (finite integrated technique).