Overcoming the Upper Bound on the Bandwidth-to-Thickness Ratio of Ultrathin Absorbers

P. S. Nayani, Y. Ra'di

Research output: Chapter in Book/Entry/PoemConference contribution

Abstract

In numerous applications from radio to optical frequencies, there is a need to design electrically thin layers capable of perfectly absorbing the incoming electromagnetic waves. From a practical point of view, there is an ever-growing need for thinner absorbing layers that provide higher absorption bandwidths. However, there is an upper bound on the bandwidth-to-thickness ratio of these absorbers. The thinner these absorbers get, the narrower absorption bandwidth they provide. Here, we introduce a new concept for designing ultra-thin absorbers that can go beyond this upper bound defined for conventional absorbers based on high-impedance surfaces. It is shown that the absorbers designed based on the proposed concept can provide several-fold higher absorption bandwidth compared to the same thickness absorbers designed based on conventional approaches.

Original languageEnglish (US)
Title of host publication17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages244-246
Number of pages3
ISBN (Electronic)9798350332445
DOIs
StatePublished - 2023
Event17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023 - Crete, Greece
Duration: Sep 11 2023Sep 16 2023

Publication series

Name17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023

Conference

Conference17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
Country/TerritoryGreece
CityCrete
Period9/11/239/16/23

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Instrumentation

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