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arXiv · 2202.10319

Metasurface Magnetless Specular Isolator

Guillaume Lavigne·Toshiro Kodera·Christophe Caloz
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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.

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Guillaume Lavigne, Toshiro Kodera, Christophe Caloz. 2022-02-18. Metasurface Magnetless Specular Isolator. https://arxiv.org/abs/2202.10319

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