Metasurface Magnetless Specular Isolator
Abstract
We present a (nongyrotropic) metasurface magnetless specular isolator. This device reflects as a mirror a wave incident under a specified angle in one direction and absorbs it in the opposite direction. The metasurface is synthesized in terms of bianisotropic susceptibility tensors, whose nonreciprocity resides in normal components and exhibits a hybrid electric, magneto-electric nature. The metaparticle is implemented in the form of a U-shaped conducting structure loaded by a transistor. The operation principle of the specular isolator is demonstrated by both full-wave simulation and experiment, with isolation levels reaching 41 and 38 dB respectively. This system represents the first realization of a metasurface involving nonreciprocal normal susceptibilities and features a previously unreported type of nonreciprocity.
Keywords
Cite
@article{arxiv.2202.10319,
title = {Metasurface Magnetless Specular Isolator},
author = {Guillaume Lavigne and Toshiro Kodera and Christophe Caloz},
journal= {arXiv preprint arXiv:2202.10319},
year = {2022}
}