All-passive Microwave-Diode Nonreciprocal Metasurface
Abstract
Breaking reciprocity in the microwave frequency range will have important implications for modern electronic systems. Since it usually involves bulky biasing magnets or complex spatial-temporal modulations, exploring a lightweight, all-passive approach becomes intriguing. Starting from a circuit model, we theoretically demonstrate the nonreciprocal behaviour on a transmission line building block creating a strong field asymmetry with a switchable matching stub to enable two distinct working states. After translating to an electromagnetic model, this concept is first proved by simulation and then experimentally verified on a microstrip-line-based diode-integrated metasurface showing nonreciprocal transmission. This printed circuit board design is expected to find various applications in electromagnetic protecting layers, communication systems, microwave isolators and circulators.
Cite
@article{arxiv.2305.02207,
title = {All-passive Microwave-Diode Nonreciprocal Metasurface},
author = {Xiaozhen Yang and Erda Wen and Daniel F. Sievenpiper},
journal= {arXiv preprint arXiv:2305.02207},
year = {2023}
}