Dual-band Polarization-independent Absorber Based on Resistive Frequency Selective Surface

Main Article Content

Anamaria Sena Maia
https://orcid.org/0000-0001-8767-4822
Antônio Luiz Pereira de Siqueira Campos
https://orcid.org/0000-0003-4350-6389
Maurício Weber Benjó da Silva
Ruann Víctor de Andrade Lira
https://orcid.org/0000-0002-5403-261X
Alfredo Gomes Neto
https://orcid.org/0000-0001-5437-9093

Abstract

In this paper, a three-layered frequency-selective absorber (FSA) that can efficiently absorb electromagnetic waves (EM) in a double-band is proposed. The proposed structure is designed so that signals reflected from the frequency selective ground plane are located at 2.4 and 5.5 GHz (ISM and UNII bands) and absorbed by the front resistive layers. Simulation results show that the proposed absorber not only blocks transmission in the desired bands but absorbs the signals reflected from the conductive layer. Reflective FSS unit cells are composed of double square loops printed on an FR-4 substrate and the resistive layers are formed of OhmegaPly material with a resistivity of 50 ohms per square. Furthermore, the proposed absorber is 0.17λ thick at the lowest frequency of absorption. The experimental results agree with the numerical simulations and show an absorptivity of more than 90% at 2.4 and 5.5 GHz, covering entirely ISM and UNII bands.

Downloads

Download data is not yet available.

Article Details

How to Cite
Sena Maia, A., Campos, A. L. P. de S., Benjó da Silva, M. W., Lira, R. V. de A., & Neto, A. G. (2022). Dual-band Polarization-independent Absorber Based on Resistive Frequency Selective Surface. Journal of Communication and Information Systems, 37(1), 168–174. https://doi.org/10.14209/jcis.2022.17
Section
Regular Papers

Most read articles by the same author(s)