Open AccessDesign of a low-frequency broadband circuit analog absorbers based on wire media
Author(s) -
Xu Yang-Qiu,
Huibin Zhang,
Zhou Pei-Heng,
Lu Hai-Peng,
Liang Difei,
Xie Jian-Liang
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.058103
Subject(s) - finite difference time domain method , broadband , frequency band , low frequency , equivalent circuit , absorption (acoustics) , materials science , dispersion (optics) , frequency domain , resonance (particle physics) , optics , optoelectronics , physics , computer science , telecommunications , bandwidth (computing) , atomic physics , quantum mechanics , voltage , computer vision
A circuit analog absorber (CA) with wire medium is presented. Both the original CA and the structure presented are analyzed. It is shown that original CA cannot have more than one resonant frequency in low frequency band, owing to the limitation by the effective resistance. The presented structure breaks the limitation using artificial plasma resonance, with the wave dispersion in the structure analyzed using the quasi-static model. The experimental results, consistent with simulation results based on the finite-difference time-domain (FDTD) method, show that the structure obtains dual-band absorption, thus broadening the absorption band in low frequency band.