Title :
A Low-Profile Frequency Selective Surface With Controllable Triband Characteristics
Author :
Wang, Desong ; Wenquan Che ; Yumei Chang ; Kuo-Sheng Chin ; Chow, Yung Leonard
Author_Institution :
Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
A novel compact low-profile frequency selective surface (FSS) with controllable triband characteristics is presented. The proposed FSS consists of a stacked periodic array of square loops and complementary apertures, respectively centered within a wire grid and an aperture grid, which can create three transmission poles and two transmission zeros. Controllable triband performance is achieved, allowing the FSS to transmit the signal at 4 GHz while reflecting the signals at 6 and 9.5 GHz. Due to the compact and low-profile structure, the designed FSS has a reduced sensitivity to the incident angle compared to traditional triband FSSs. An equivalent circuit model is proposed for predicting and analyzing the frequency characteristics of this structure. For demonstration, a prototype of the proposed FSS is fabricated and measured. Good agreement between the simulated and measured results is observed.
Keywords :
equivalent circuits; frequency selective surfaces; microwave antenna arrays; multifrequency antennas; poles and zeros; spatial filters; FSS; aperture grid; bandwidth 6 GHz; bandwidth 9.5 GHz; compact low-profile frequency selective surface; complementary apertures; controllable triband characteristics; equivalent circuit model; frequency 4 GHz; multiband antennas; sensitivity reduction; spatial filters; square loops; stacked periodic array; subreflectors; transmission poles; transmission zeros; wire grid; Apertures; Equivalent circuits; Filtering theory; Frequency selective surfaces; Integrated circuit modeling; Wires; Complementary structure; frequency selective surface (FSS); spatial filter; spatial lumped element; triband;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2254459
