An ultra-wideband absorber based on multiple resonators in 3-D frequency-selective structure

  • A. A. Omar*
  • , Z. Shen
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

An ultra-wideband absorber based on employing multiple resonators in the unit cell of a 3-D frequency-selective structure is proposed. The original design consists of two-dimensional periodic array of three-dimensional unit cells and lumped components to provide matching with free space and absorb the incident electromagnetic wave. By introducing one more resonator in the unit cell, an ultra-wideband absorber can be constructed. It has a fractional bandwidth of 155.7 % for -10 dB of reflection coefficient under the normal incidence with an absorber thickness of 0.12 λ0 at the lowest absorption frequency. This absorber works for TE polarization at which two quasi-TEM modes are excited in the air and substrate regions. The proposed absorber shows a stable performance under oblique angles of incidence.

Original languageEnglish
Title of host publicationProceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications, ICEAA 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1802-1804
Number of pages3
ISBN (Electronic)9781509044511
DOIs
StatePublished - 11 Oct 2017
Externally publishedYes

Publication series

NameProceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications, ICEAA 2017

Bibliographical note

Publisher Copyright:
© 2017 IEEE.

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Instrumentation
  • Radiation

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