Performance Evaluation of Wide-Angle Ultrathin Microwave Metamaterial Absorber with Polarization Independence

Main Article Content

K. P. Kaur
T. Upadhyaya

Abstract

A novel dual-band wide-angle ultra-thin absorber composed of dual closed-concentric ten-point stars with polarization independence is presented in this article. The ten-point stars formed resonators are engraved on low cost FR4 substrate. The EM absorber performance is studied in terms of electrical and physical parameters. The polarization independence is practically demonstrated using waveguide measurement method. The measured results are in good agreement with simulated results. The absorbance values of 99.37% and 97.18% are achieved at 2.13 GHz and 2.52 GHz, respectively. The presented absorber design is wide-angle RF absorber with high absorbance values of about 80% up to 60° under TE mode and 87% up to 75° of oblique incidence angle for TM mode excitations. The experimental results demonstrate the absorption effectiveness of the proposed design to be utilized in RF energy harvester modules for capturing ambient UMTS band signals and in RF absorber applications for S band radar systems. The presented absorber unit cell is ultrathin and compact with the thickness and size less than λ/56 mm and λ/5 mm, respectively, at lowest absorption frequency.

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How to Cite
Kaur, K., & Upadhyaya, T. (2018). Performance Evaluation of Wide-Angle Ultrathin Microwave Metamaterial Absorber with Polarization Independence. Advanced Electromagnetics, 7(4), 71-77. https://doi.org/10.7716/aem.v7i4.761
Section
Research Articles
Author Biography

T. Upadhyaya, Charotar University of Science & Technology

Associate Professor & Head, V. T. Patel Department of Electronics and Communication Engineering,  Chandubhai S. Patel Institute of Technology (CSPIT), Charotar University of Science & Technology (CHARUSAT), Changa - 388421, Anand Gujarat, INDIA.

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