Open AccessNumerical demonstration of non‐reciprocal waveform‐selective metasurfaces
Author(s) -
Wakatsuchi H.
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2018.8082
Subject(s) - reciprocal , waveform , optics , electronic engineering , physics , computer science , engineering , telecommunications , radar , philosophy , linguistics
The authors demonstrate two types of non‐reciprocal waveform‐selective metasurfaces that control the level of reflectance, depending not only on the direction of the incident wave but also on the waveform, namely, on the pulse width. A capacitor‐based waveform‐selective metasurface exhibits strong reflectance for a short pulse compared to that for a continuous wave (CW) at the same frequency. In contrast, an inductor‐based waveform‐selective metasurface more strongly reflects a CW than a pulse. The difference between them is demonstrated to be more than 50% but is reduced for a wave propagating in the other direction. The concept of the authors' structures is expected to offer an additional degree of freedom with which to design non‐reciprocal devices and applications.