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A compact dual‐wideband bandpass filter using two triple‐mode resonators for S‐band applications
Author(s) -
Qiang Tian,
Wang Cong,
Kim Nam Young
Publication year - 2015
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.28799
Subject(s) - passband , band pass filter , wideband , resonator , bandwidth (computing) , insertion loss , physics , dual mode , multi band device , microwave , fractional bandwidth , electronic engineering , acoustics , electrical engineering , computer science , optoelectronics , optics , telecommunications , engineering , quantum mechanics , antenna (radio)
A compact dual‐wideband bandpass filter (BPF) is proposed using two triple‐mode resonators (TMRs) for S‐band applications. The proposed TMRs loaded with two folded open‐ended stubs exhibit triple‐mode property and realize dual‐band performance by sharing a common input and output. Due to the symmetrical structure of the TMRs, even‐odd‐mode analysis is applied to explain the modal characteristics. Finally, a dual‐wideband triple‐mode BPF is designed and measured. The proposed pattern without via satisfied the specification of the lower passband and the upper passband as the lower insertion loss of 0.87 dB and 0.93 dB, respectively and the wider fractional bandwidth of 13.9 and 17.7%, respectively. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:153–157, 2015