Magnetless Reflective Gyrotropic Spatial Isolator Metasurface
Abstract
We present the concept of a magnetless Reflective Gyrotropic Spatial Isolator (RGSI) metasurface. This is a birefringent metasurface that reflects vertically polarized incident waves into a horizontally polarized waves, and absorbs horizontally polarized incident waves, hence providing isolation between the two orthogonal polarization. We first synthesize the metasurface using surface susceptibility-based Generalized Sheet Transition Conditions~(GSTCs). We then propose a mirror-backed metaparticle implementation of this metasurface, where transistor-loaded resonators provide the desired magnetless nonreciprocal response. Finally, we demonstrate the metasurface by full-wave simulation results. The proposed RGSI metasurface may be used in various electromagnetic applications, and may also serve as a step towards more sophisticated magnetless nonreciprocal metasurface systems.
Keywords
Cite
@article{arxiv.2104.09300,
title = {Magnetless Reflective Gyrotropic Spatial Isolator Metasurface},
author = {Guillaume Lavigne and Christophe Caloz},
journal= {arXiv preprint arXiv:2104.09300},
year = {2021}
}