期刊
APPLIED PHYSICS LETTERS
卷 116, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5140834
关键词
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资金
- Japanese Ministry of Internal Affairs and Communications (MIC) under Strategic Information and Communications R&D Promotion Program (SCOPE) [165106001, 192106007]
- Japan Science and Technology Agency (JST) under Precursory Research for Embryonic Science and Technology (PRESTO) [JPMJPR193A]
In this study, we demonstrate simplified equivalent circuit models to effectively approximate responses of recently reported waveform-selective metasurfaces that distinguish different electromagnetic waves even at the same frequency depending on their waveforms or pulse widths. Compared to conventional equivalent circuit models that represent behaviors of ordinary metasurfaces in the frequency domain, the proposed models enable us to explain how waveform-selective metasurfaces respond in the time domain. Our approach well estimates not only time constants of waveform-selective metasurfaces but also their entire time-domain responses. Particularly, this study reports the importance of resistive components of diodes as well as the limitation of our models with respect to the power dependence although still the models effectively work when waveform-selective mechanisms are clearly exhibited with a sufficiently large input power. Thus, the idea of the proposed equivalent circuit models contributes not only to a greater understanding of waveform-selective mechanisms but also to facilitating the design process of such unique structures.
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