Design and equivalent circuit modelling of super compact ultrathin metamaterial absorber for microwave frequency Regime

Vishal Puri; Hari Shankar Singh

doi:10.1515/freq-2023-0352

Article

Design and equivalent circuit modelling of super compact ultrathin metamaterial absorber for microwave frequency Regime

Vishal Puri and Hari Shankar Singh

Published/Copyright: February 12, 2024

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From the journal Frequenz Volume 78 Issue 7-8

Abstract

This article is an attempt to design and develop a metamaterial-based microwave absorber with a low profile, broad incidence angle and compactness in the microwave frequency range. Further, equivalent circuit model of the proposed structure is discussed based on circuit theory. The unit cell focuses on achieving maximum absorption at C-, X-, and K-band. The dimensions of the proposed design are ultrathin and compact, having an overall size of 8 mm × 8 mm × 0.8 mm. The dimensions are optimized in such a fashion to achieve three different peaks at three various bands (C, X and K), thereby making the triple-band behaviour of the metamaterial absorber possible. The structure provides absorption of 98.26 % absorption at 7.76 GHz (C-band) while absorption of 96.74 % is achieved at 10.26 GHz (X-band) and 99.92 % absorption at 19.32 GHz (K-band) of microwave regime. The experimental verification of design conform that the measured results are found to be in close agreement to simulated ones.

Keywords: metamaterial; absorber; C-band; K-band; microwave; X-Band

Corresponding author: Hari Shankar Singh, Department of Electronics and Communication Engineering, Thapar Institute of Engineering and Technology, Patiala-147 004, Punjab, India; and TIET-VT Center of Excellence for Emerging Materials (CEEMS), TIET, Patiala-147004, Punjab, India, E-mail: harishankar1990@gmail.com

Acknowledgments

The authors are thankful to Science and Engineering Research Board (SERB), Government of India for providing financial support to carry out this work under a project (File No. CRG/2022/001256). Also, we are thankful to Antenna Research Laboratory, TIET, Patiala, for providing the necessary instrument facility to carry out the measurement.

Research ethics: Not applicable.
Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: The authors state no conflict of interest.
Research funding: None declared.
Data availability: The raw data can be obtained on request from the corresponding author.

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Received: 2023-10-02

Accepted: 2024-01-19

Published Online: 2024-02-12

Published in Print: 2024-08-27

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Articles in the same Issue

https://doi.org/10.1515/freq-2023-0352

Keywords for this article

metamaterial; absorber; C-band; K-band; microwave; X-Band