通带
谐振器
材料科学
有损压缩
等效电路
电容器
电阻抗
阻带
插入损耗
吸收(声学)
带通滤波器
光电子学
声学
光学
计算机科学
物理
电气工程
工程类
复合材料
电压
人工智能
作者
Yufeng Yu,Zhongxiang Shen,Tianwei Deng,Guo Qing Luo
标识
DOI:10.1109/tap.2017.2712812
摘要
This communication presents a 3-D frequency-selective rasorber (FSR) that has a passband with a low insertion loss and two absorption bands at both sides of the passband. A lossless and two lossy resonators are employed in the unit cell of the periodic structure to produce the passband and the absorption bands, respectively. Utilizing the techniques of stepped impedance resonator and capacitor loading, the thickness of the resonators is reduced. Moreover, the capacitor loading also frees the tuning of each resonant frequency of the lossy resonator, which facilitates the FSR design. The multiresonances of the lossy resonators are also employed to obtain a wide upper absorption band. An equivalent circuit model is established for understanding the operating principle. A prototype of the proposed FSR is fabricated and measured. Good agreement between measured and simulated results validates our FSR design.
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