Fundamental Study on Electrically Controllable Broadband and Thin Non-Reciprocal Metasurface

In this paper, we report fundamental simulation results on a novel structure combining magnetic materials and metal patches towards the realization of non-reciprocal metasurfaces that can be controlled by electrical signals to achieve stealth properties. The proposed structure realizes non-reciprocity with a cylindrical magnetic body and a metal patch placed next to it. Unidirectional microwave propagation is achieved by combining the circular propagation characteristics of magnetic materials and the transmission/reflection control of metal patches. As a result of simulation, it is possible to achieve isolation of 10 dB or more and a thickness of 1/3 wavelength or less with a bandwidth of 3GHz or more in the X band.