Ultrathin wideband low profile circuit analog metamaterial absorber

Author:

Murali Naik K. H.1,Singh Amit K.2ORCID,Rama Krishna Dasari3ORCID

Affiliation:

1. Department of Electronics and Communication Engineering Vardhaman College of Engineering Hyderabad India

2. Department of Electrical Engineering Indian Institute of Technology Patna Patna India

3. Department of Electronics and Communication Engineering Osmania University Hyderabad India

Abstract

AbstractIn this paper, a low profile polarization insensitive ultrathin Circuit Analogue Absorber is presented for wideband absorption, encompassing the entire X‐band and Ku‐band applications achieving stable angular performance up to 45° angle of incidence in TE and TM polarized configurations. The absorber design being proposed consists of a multislotted square loop resonator loaded with lumped resistors, accompanied inside by a quadruple‐split annular copper ring. These components are arranged in a stacked configuration, with a grounded dielectric substrate serving as the base and an air spacer between the substrate and ground displaying absorptivity above 90% from 8.19 to 22.20 GHz with a 14.01 GHz and 92.2% of actual and fractional bandwidth respectively under the normal incidence. The thickness of designed wideband absorber is 0.0819(is the wavelength corresponding to the lowest operating frequency) making absorber Low profile and Ultrathin.

Publisher

Wiley

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