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Low‐frequency miniaturized dual‐band frequency selective surfaces with close band spacing
Author(s) -
Xu RongRong,
Zong ZhiYuan,
Wu Wen
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24338
Subject(s) - multi band device , microwave , capacitive sensing , frequency band , optoelectronics , materials science , selective surface , miniaturization , optics , tunable metamaterials , radio spectrum , broadband , electrical engineering , engineering , physics , metamaterial , telecommunications , antenna (radio)
Abstract In this article, a novel miniaturized dual‐band frequency selective surface (FSS) with close band spacing is presented, in which each periodic cell consists of double square loops with different capacitive loadings. The dimension of the unit cell is miniaturized by loading with ceramic chip capacitors. To eliminate the undesired coupling between unit cells, the unit cells are placed in the substrate integrated waveguide cavity structure. As a result, a dual‐band FSS with close band spacing is designed, both simulated and measured results show that the dual‐band FSS operates over DCS1800 (1.8 GHz) and Bluetooth (2.45 GHz) frequency range. And the FSS dimension is miniaturized to 0.114 λ (λ refers to the resonant wavelength of 1.8 GHz). Furthermore, it has very good stability to oblique incidence waves for both TE and TM polarization. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1238–1240, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24338