Comment on “A novel ultrathin and broadband microwave metamaterial absorber” [J. Appl. Phys. 116, 094504 (2014)]

In a recent article, Wang et al. [J. Appl. Phys. 116, 094504 (2014)] proposed an ultra-thin broadand microwave metamaterial absorber and claimed the absorption above 90 % in the operating band of 8.85 GHz–14.17 GHz. In this comment, we argue that the authors have neglected the cross-polarized reflec...

Full description

Saved in:
Bibliographic Details
Published inJournal of applied physics Vol. 124; no. 14
Main Authors Mustafa, Meraj-E-, Tahir, Farooq A., Amin, M., Siddiqui, O.
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 14.10.2018
Subjects
Absorbers (materials)
Absorption
Applied physics
Broadband
Electromagnetic radiation
Metamaterials
Polarizers
Online AccessGet full text

Cover

More Information
Summary:In a recent article, Wang et al. [J. Appl. Phys. 116, 094504 (2014)] proposed an ultra-thin broadand microwave metamaterial absorber and claimed the absorption above 90 % in the operating band of 8.85 GHz–14.17 GHz. In this comment, we argue that the authors have neglected the cross-polarized reflection in their calculation of absorption. The proclaimed anisotropic pentagon patch metamaterial is predominantly a cross polarizer for the normally incident electromagnetic wave. We demonstrate that the actual absorption of the metamaterial structure remain less than 40 %. Hence, the proposed metamaterial is not a perfect broadband absorber; however, it can be used as an efficient cross-polarizer.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.5046894