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Single-layer six-band metasurface absorber for microwave applications
Hattan Abutarboush1, Syed Wahab Zarin2, Aamir Rashid3
1Department of Electrical Engineering, College of Engineering, Taibah University, Madinah, Saudi Arabia.
Plos One
|August 10, 2026
Summary
A novel single-layer metasurface absorber achieves six distinct microwave absorption bands using a simple ring resonator design. This effective metamaterial demonstrates over 90% absorption across all bands, validating its potential for advanced microwave applications.
Area of Science:
- Electromagnetics
- Materials Science
- Metamaterials
Background:
- Metasurface absorbers are crucial for controlling electromagnetic wave interactions.
- Achieving multiband absorption with simple, single-layer structures remains a significant challenge in microwave engineering.
Purpose of the Study:
- To design, fabricate, and validate a single-layer metasurface absorber capable of multiband operation.
- To investigate the resonant mechanisms responsible for the observed absorption bands.
Main Methods:
- A unit cell comprising concentric ring resonators with stubs was designed.
- Electromagnetic simulations and experimental fabrication were employed for validation.
- Surface impedance matching, current cancellation, and current distribution analyses were performed.
Main Results:
- Six distinct absorption bands were achieved across the microwave spectrum (2.278-18.70 GHz).
- Absorption magnitude exceeded 90% in all operating bands.
- A wide bandwidth of 930 MHz was observed in the highest frequency band.
- Simulated and measured results demonstrated excellent agreement.
Conclusions:
- The proposed single-layer metasurface absorber effectively achieves multiband microwave absorption.
- The design utilizes simple ring-based geometry without complex multilayering or lumped components.
- The findings confirm the viability of this metasurface for practical microwave absorption applications.