PCB prism absorber design and characterisation

Chao Gu*, Vincent Fusco

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This article presents a stack of metal/dielectric lamination absorber shaped as a doubly periodic array of truncated prism. We show how the EM absorption characteristics can be modified through simple changes to the geometric structure of the unit cell. The resultant absorber can be designed to exhibit broadband performance, i.e. 10 dB return loss from 8.2 to 14.2 GHz. We then discuss the angular TE, TM incidence absorption characteristics of a doubly periodic arrangement of square truncated prism array. Through EM simulation, we demonstrate the possibility for optical imaging through the absorber by introducing perforations into it. Finally, we show how to use a waveguide simulator method to experimentally verify the absorption performance of the basic structure.

Original languageEnglish
Pages (from-to)27-38
Number of pages12
Issue number1
Publication statusPublished - 27 Sep 2020

Bibliographical note

Funding Information:
The authors wish to acknowledge the financial support of the UK Engineering and Physical Research Council EPSRC EP/N020391/1.

Publisher Copyright:
© 2020 Informa UK Limited, trading as Taylor & Francis Group.

Copyright 2020 Elsevier B.V., All rights reserved.


  • Absorber
  • broadband
  • metamaterial
  • PCB

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)
  • Electrical and Electronic Engineering


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