Waveform Selective Surfaces

Abstract

The role of frequency is very important in electromagnetics since it may significantly change how a material interacts with an incident wave if the frequency spectrum varies. Here, we demonstrate a new kind of microwave window that has the unique property of controlling transmission and reflection based not only on the frequency of an incoming wave but also on the waveform or pulse width. This surface can preferentially pass or reject different kinds of signals, such as short pulses or continuous waves, even if they occur at the same frequency. Such a structure can be used, for example, to allow long communication signals to pass through, while rejecting short radar pulses in the same frequency band. It is related to the classic frequency selective surface, but adds the new dimension of waveform selectivity, which is only possible by introducing nonlinear electronics into the surface. Thus, our study is expected to provide new solutions to both fundamental and applied electromagnetic issues ranging from traditional antenna design and wireless communications to emerging areas such as cloaking, perfect lenses, and wavefront shaping.

arXiv comment34 pages

References in corpus (4)

• Memory Metamaterials
• All-Passive Nonreciprocal Metasurface
• Broadband Angular Selectivity of Light at the Nanoscale: Progress, Applications and Outlook
• Waveform Selectivity at the Same Frequency

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• Waveguide Components and Aperture Antennas With Frequency- and Time-Domain Selectivity Properties
• Experimental demonstration of waveform-selective metasurface varying wireless communication characteristics at the same frequency band of 2.4 GHz
• Simplified equivalent circuit approach for designing time-domain responses of waveform-selective metasurfaces
• Method for Extracting the Equivalent Admittance from Time-Varying Metasurfaces and Its Application to Self-Tuned Spatiotemporal Wave Manipulation
• Metasurface Sensing Difference in Waveforms at the Same Frequency with Reduced Power Level
• Metasurfaces for Efficient Digital Noise Absorption
• Pseudo-Waveform-Selective Metasurfaces and Their Limited Performance