Paper
4 December 2024 Broadband amplitude-tunable absorber based on plug-in structure
Mengling Cai, Jiao Jiao, Na Yao, Wei Wang, Dehua Chen, Xu Sun, Jingxuan Duan
Author Affiliations +
Proceedings Volume 13283, Conference on Spectral Technology and Applications (CSTA 2024); 1328359 (2024) https://doi.org/10.1117/12.3037646
Event: Conference on Spectral Technology and Applications (CSTA 2024), 2024, Dalian, China
Abstract
An active metasurface microwave absorber with reconfigurable absorption intensity is proposed for S, C, and X microwave-band applications. The metasurface unit adopts a simple split ring resonator (SRR) to form a vertically periodic cross-grid array and uses a size-scaling effect to construct a double-layer structure with structural similarity, expanding the absorption bandwidth. To achieve broadband impedance matching, a PIN diode is placed into the resonant ring opening. By optimizing the resistive loss of the three-dimensional structure through dispersion engineering, the designed double-layer plug-in structure absorber can achieve adjustable absorption amplitude within a wide frequency range of 2-12GHz, and the reconfigurable absorption intensity can reach up to 16dB. Then, the sample prototype is fabricated for demonstration, and the measurement result is consistent well with the simulation one. Furthermore, the structure demonstrates comprehensive advantages in terms of dynamic fine-tuning, lightweight design, and ease of processing. The research results have certain application value in the intelligent stealth design of weapons and equipment.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Mengling Cai, Jiao Jiao, Na Yao, Wei Wang, Dehua Chen, Xu Sun, and Jingxuan Duan "Broadband amplitude-tunable absorber based on plug-in structure", Proc. SPIE 13283, Conference on Spectral Technology and Applications (CSTA 2024), 1328359 (4 December 2024); https://doi.org/10.1117/12.3037646
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KEYWORDS
Absorption

Design

Reflectivity

Electromagnetic metamaterials

Electromagnetism

Resistance

Reflection

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