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Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors
1Department of Electrical Engineering, The University of Suwon, Hwaseong 18323, Republic of Korea.
Materials (Basel, Switzerland)
|April 13, 2023
Summary
This study presents a novel broadband metasurface absorber using a genetic algorithm (GA) to optimize copper tile patterns. The designed absorber achieves wideband absorption, validated by experimental results.
Area of Science:
- Electromagnetics
- Materials Science
Background:
- Metasurfaces offer unique electromagnetic properties.
- Broadband absorbers are crucial for applications like stealth and sensing.
Purpose of the Study:
- To design and experimentally verify a broadband metasurface absorber.
- To optimize the metasurface structure using a genetic algorithm (GA).
Main Methods:
- Designing a metasurface absorber with copper tiles and chip resistors.
- Utilizing a genetic algorithm (GA) to determine the optimal copper tile pattern.
- Employing full-wave simulations for performance analysis.
Main Results:
- Achieved a -10 dB reflectance bandwidth from 6.57 to 12.73 GHz.
- Demonstrated a fractional bandwidth of 63.83% for normal incidence.
- Experimental results closely matched simulation data.
Conclusions:
- The GA-optimized metasurface absorber effectively achieves broadband absorption.
- The design is experimentally validated, confirming its practical applicability.
