PCB prism absorber design and characterisation

Chao Gu and Vincent Fusco

Journal of Electromagnetic Waves and Applications, 2021, vol. 35, issue 1, 27-38

Abstract: 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.

Date: 2021
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DOI: 10.1080/09205071.2020.1824691

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