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Mode selective bandpass filter with high selectivity based on thirty‐second‐mode circular SIW resonator
Author(s) -
Zhang Sheng,
She JinChuan,
Tong MengHan,
Hong JiaSheng
Publication year - 2021
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.32831
Subject(s) - band pass filter , resonator , passband , coupling (piping) , miniaturization , transmission (telecommunications) , filter (signal processing) , mode (computer interface) , materials science , optics , optoelectronics , electronic engineering , engineering , physics , telecommunications , electrical engineering , computer science , metallurgy , nanotechnology , operating system
In this paper, a thirty‐second‐mode circular substrate integrated waveguide resonator (TMCSIWR) is firstly investigated, which well retains the fundamental mode and high‐order modes (TM 0n0 modes) in circular SIW resonator (CSIWR) for stable transmission. Considering miniaturization, high Q and multi frequency selection of TMCSIWR systematically, each TM 0n0 mode in TMCSIWR can be effectively selected to achieve independent passband by adjusting feed position and coupling distance. Meanwhile, each TM 0n0 mode and non‐resonant modes produce multiple transmission zeros by mode coupling. Furthermore, arc groove disturbance effectively adjust coupling to achieve high selectivity. Finally, a multi‐zero TM 030 mode TMCSIW bandpass filter is designed and fabricated. The measured results are in good agreement with the simulated results.