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Pseudo?Waveform?Selective Metasurfaces and their Limited Performance

Nakasha, Tomoyuki; Phang, Sendy; Wakatsuchi, Hiroki

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Authors

Tomoyuki Nakasha

Hiroki Wakatsuchi



Abstract

Abstract In recent years, metasurfaces composed of lumped circuit components, including nonlinear Schottky diodes, have been reported to be capable of sensing particular electromagnetic waves even at the same frequency depending on their waveforms, or more specifically, their pulse widths. In this study, analogous waveform-selective phenomena using only linear circuits and linear media are reported. Although such linear metasurfaces are analytically and numerically demonstrated to exhibit variable absorption performance, it cannot strictly be categorized as waveform-selective absorption. It is due to the fact that the waveform-selective responses in the linear metasurfaces originated from the dispersion behaviors of the structures rather than the frequency conversion seen in nonlinear waveform-selective metasurfaces. These linear structures are thus referred to as pseudo-waveform-selective metasurfaces. Additionally, it is shown that the pseudo-waveform-selective metasurfaces have limited performance unless nonlinearity is introduced. These results and findings confirm the advantages of nonlinear waveform-selective metasurfaces, which can be exploited to provide an additional degree of freedom to address existing electromagnetic problems/challenges involving even waves at the same frequency.

Citation

Nakasha, T., Phang, S., & Wakatsuchi, H. (2021). Pseudo?Waveform?Selective Metasurfaces and their Limited Performance. Advanced Theory and Simulations, 4(1), Article 2000187. https://doi.org/10.1002/adts.202000187

Journal Article Type Article
Acceptance Date Sep 29, 2020
Online Publication Date Nov 25, 2020
Publication Date 2021-01
Deposit Date Jan 7, 2021
Publicly Available Date Mar 29, 2024
Journal Advanced Theory and Simulations
Electronic ISSN 2513-0390
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 4
Issue 1
Article Number 2000187
DOI https://doi.org/10.1002/adts.202000187
Keywords electromagnetics, metamaterials, metasurfaces, microwaves, pulse width, waveform
Public URL https://nottingham-repository.worktribe.com/output/5069664
Publisher URL https://onlinelibrary.wiley.com/doi/abs/10.1002/adts.202000187
Additional Information Received: 2020-08-10; Published: 2020-11-25

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