Customised broadband metamaterial absorbers for arbitrary polarisation

TL;DR

This paper demonstrates that customised broadband electromagnetic wave absorbers with arbitrary polarisation can be achieved using lossy cut-wire metamaterials, offering adjustable properties and size reduction through specific design strategies.

Contribution

It introduces a novel design approach for broadband, polarisation-independent metamaterial absorbers using lossy cut-wire structures confirmed by numerical simulations.

Findings

Broadband absorption achieved for arbitrary polarisation

Design flexibility allows tuning of electromagnetic properties

Size reduction compared to conventional absorbers

Abstract

This paper shows that customised broadband absorption of electromagnetic waves having arbitrary polarisation is possible by use of lossy cut-wire (CW) metamaterials. These useful features are confirmed by numerical simulations in which different lengths of CW pairs are combined as one periodic metamaterial unit and placed near to a perfect electric conductor (PEC). So far metamaterial absorbers have exhibited some interesting features, which are not available from conventional absorbers, e.g. straightforward adjustment of electromagnetic properties and size reduction. The paper shows how with proper design a broad range of absorber characteristics may be obtained.