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Chin. Phys. B, 2014, Vol. 23(4): 047303    DOI: 10.1088/1674-1056/23/4/047303

A dual-band flexible frequency selective surface with miniaturized elements and maximally flat (Butterworth) response

Wang Xiu-Zhia b, Gao Jin-Songa, Xu Nian-Xia, Liu Haia
a Key Laboratory of Optical System Advanced Manufacturing Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
b University of Chinese Academy of Sciences, Beijing 100049, China
Abstract  A dual-band flexible frequency selective surface (FSS) with miniaturized elements and maximally flat (Butterworth) response is presented in this paper. It is composed of three metallic layers, which are fabricated on thin flexible polyimide substrates and bonded together using thin bonding films. The overall thickness of the proposed structure is only about 0.3 mm, making it an attractive choice for conformal FSS applications. All the three layers can constitute a miniaturized-element FSS (MEFSS) and produce the first pass-band with miniaturization property, while the up and bottom layers can constitute a symmetric biplanar FSS and produce the second pass-band with maximally flat (Butterworth) response. The two pass-bands are independent and there is a wide band spacing up to 30 GHz between them. The principles of operation, the simulated results by using the vector modal matching method, and the experimental values of the fabricated prototype are also presented and discussed.
Keywords:  bandpass filters      flexible structures      frequency selective surfaces  
Received:  02 July 2013      Revised:  28 September 2013      Accepted manuscript online: 
PACS:  73.61.-r (Electrical properties of specific thin films)  
  73.90.+f (Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures)  
Fund: Project supported by the Third Innovation Fund of Changchun Institute of Optics and Fine Mechanics and Physics (Grant No. 093Y32J090).
Corresponding Authors:  Xu Nian-Xi     E-mail:
About author:  73.61.-r; 73.90.+f

Cite this article: 

Wang Xiu-Zhi, Gao Jin-Song, Xu Nian-Xi, Liu Hai A dual-band flexible frequency selective surface with miniaturized elements and maximally flat (Butterworth) response 2014 Chin. Phys. B 23 047303

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