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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
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A highly efficient triple band metasurface enabled absorber for 5G/6G millimeter wave applications
Fatima Younis1,2, Owais Khan3, Jawad Ahmad4
1School of Physics, Central South University, 410083, Changsha, China.
Scientific Reports
|August 11, 2025
Summary
This study introduces a novel tri-band metasurface absorber (MSA) for 5G/6G millimeter-wave applications. The low-cost design achieves high absorption rates and polarization stability, validated by experimental results.
Area of Science:
- Electromagnetics
- Materials Science
- Microwave Engineering
Background:
- Metasurface absorbers (MSAs) are crucial for controlling electromagnetic waves.
- Achieving multi-band absorption with high efficiency and polarization stability remains a challenge.
Purpose of the Study:
- To design and validate a low-cost, tri-band metasurface absorber (MSA).
- To achieve high absorption rates across three distinct frequency bands for millimeter-wave applications.
Main Methods:
- A dual elliptical geometric resonator with an enclosed circular structure on an FR-4 substrate was designed.
- Multi-resonance topology optimization and parametric analysis were performed.
- The unit cell was extended to a metasurface array and experimentally validated.
Main Results:
- The proposed MSA demonstrated three absorption peaks at 28 GHz (99%), 33 GHz (98%), and 38 GHz (99%) under normal incidence.
- The absorber exhibited polarization-insensitive behavior for both TE and TM waves.
- Experimental results closely matched simulated predictions, with measured absorption rates of 97%, 95%, and 99.6%.
Conclusions:
- The developed tri-band MSA offers high absorption efficiency, polarization stability, and cost-effective fabrication.
- The design is well-suited for advanced 5G/6G millimeter-wave communication systems.
