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arXiv · 2605.20836

Towards compact high-frequency nonreciprocal devices using nanoplasma-switched time-varying metasurfaces

Mikhail Sidorenko·Jin Zhang·Xuchen Wang·Zhipei Sun·Sergei Tretyakov·Viktar Asadchy
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Abstract

Time-modulated systems have received growing interest in recent years. They allow us to tailor effects, such as frequency conversion, single-direction propagation, etc. For the microwave band, semiconductor elements, such as varactors, are usually used as time-modulated elements but their modulation frequency has been limited to the few-gigahertz range. Recent advances in nanoplasma switches, i.e., two-state electronic switches based on a gas discharge in a nanometer-scale gap, provide a new potential for developing time-modulated systems with high operating frequencies. Here, we develop an analytical framework based on the time-Floquet method for the design of nonreciprocal time-modulated devices based on two-state time-modulated elements, for instance, nanoplasma-based switches. A practical example of a microwave isolator operating at 100~GHz frequency is developed and studied both analytically and using full-wave simulations. A potential realization in a parallel-plate waveguide is also simulated numerically.

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Mikhail Sidorenko, Jin Zhang, Xuchen Wang, Zhipei Sun, Sergei Tretyakov, Viktar Asadchy. 2026-05-20. Towards compact high-frequency nonreciprocal devices using nanoplasma-switched time-varying metasurfaces. https://arxiv.org/abs/2605.20836

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