Numerical demonstration of non-reciprocal waveform-selective metasurfaces

Numerical demonstration of non-reciprocal waveform-selective metasurfaces

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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.


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      • 17. Wakatsuchi, H., Long, J., Sievenpiper, D.F.: ‘Waveform selective surfaces’, Adv. Funct. Mater., 2019,

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