Space-Time Modulated Loaded-Wire Metagratings for Magnetless Nonreciprocity

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Abstract

We show that spatiotemporally modulated metagratings can lead to strong nonreciprocal responses, despite the fact that they are based on electrically-large unit cells and use only three modulation domains. We specifically focus on wire metagratings loaded with time-modulated capacitances. We use the discrete-dipole-approximation and an ad-hoc generalization of the theory of polarizability for time-modulated particles, and demonstrate an effective nonreciprocal anomalous reflection (diffraction) with an efficient frequency conversion.

Original languageEnglish
Title of host publication14th European Conference on Antennas and Propagation, EuCAP 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9788831299008
DOIs
StatePublished - Mar 2020
Event14th European Conference on Antennas and Propagation, EuCAP 2020 - Copenhagen, Denmark
Duration: 15 Mar 202020 Mar 2020

Publication series

Name14th European Conference on Antennas and Propagation, EuCAP 2020

Conference

Conference14th European Conference on Antennas and Propagation, EuCAP 2020
Country/TerritoryDenmark
CityCopenhagen
Period15/03/2020/03/20

Keywords

  • Metagratings
  • nonreciprocity
  • spatiotemporal modulation

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