Design and Fabrication of a Multi-band Circuit Analog Absorber Based on Double-Layered Fractal Resonators

被引：0

作者：

Wang, Qi ^{[1
]}

He, Longhui ^{[1
,2
]}

Zuo, Chunxiang ^{[3
]}

Zeng, Weiao ^{[1
]}

Chen, Zhiquan ^{[1
]}

Wu, Muhao ^{[1
]}

He, Yongwei ^{[1
]}

Xu, Hui ^{[1
,2
]}

Tang, Yibo ^{[4
]}

机构：

[1] Hunan Univ Technol & Business, Sch Microelect & Phys, Changsha 410205, Peoples R China

[2] Xiangjiang Lab, Changsha 410205, Peoples R China

[3] Ningxiang Tradit Chinese Med Hosp, Lab Dept, Changsha 410699, Peoples R China

[4] Shaoyang Univ, Sch Informat Sci & Engn, Shaoyang 422000, Peoples R China

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2025年 / 54卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Fractal metamaterials; multi-frequency absorption; equivalent circuit; polarization-insensitive; stealth technology; METAMATERIAL ABSORBER;

D O I：

10.1007/s11664-025-11787-w

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A multi-frequency, high-performance, ultrathin composite absorber covering the S, C, X, and Ku bands in the operating frequency range is designed by using a double-layer fractal frequency-selective surface (FSS) pattern composite, whose unit structure consists of the FSS, an intermediate matching layer, and a grounded metal. The finite time domain difference algorithm is used to simulate the structure numerically. The simulated results show that the absorption rate is as high as 90% on average in the six frequency bands of 3.6 GHz, 4.6 GHz, 9.5 GHz, 11.34 GHz, 13.91 GHz, and 16.1 GHz under vertical incidence, which is in good agreement with the experimental results. Due to the symmetrical design of the structure, the absorber is polarization-insensitive. The position of the absorption peak can be effectively regulated according to the dimensions of the cross and square fractals in the cell structure. Moreover, absorption characteristics of the proposed absorber are verified using an equivalent circuit model, and the physical mechanism of electromagnetic wave energy attenuation is investigated by analyzing the surface current, electromagnetic field, and power loss density. The proposed circuit analog absorber could be applied in anti-electromagnetic interference and stealth technology.

引用

页码：3161 / 3169

页数：9