Abstract
Recently, R. M. H. Bilal et al. proposed a wideband microwave absorber based on metallic split-ring resonators and an E-shaped fractal structure. It is found that the reflection components of high-order modes are very large but have been neglected by the authors. Our results show that the actual absorptivity is much lower than the reported one if the reflection components of high-order modes are taken into consideration. The simulation results prove that the proposed structure is not an effective absorber.
Highlights
A perfect metamaterial absorber (PMA) based on E fractal is presented by R
We found that it is not a PMA because high-order modes have been ignored by the authors
PMA is an artificial periodic structure which is proposed by Randy et al [2]
Summary
A perfect metamaterial absorber (PMA) based on E fractal is presented by R. We found that it is not a PMA because high-order modes have been ignored by the authors. They only concentrated on the reflected co-polarized component and the cross-polarized component but neglected the high-order mode of the incident wave.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
