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Design of compact wideband bandpass filter with broad stopband using hybrid HMSIW and open‐circuit tri‐section stepped impedance resonators
Author(s) -
Li Daotong,
Yu Yaqing,
Tang MingChun,
Shi Ting
Publication year - 2018
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.31418
Subject(s) - stopband , band pass filter , resonator , wideband , center frequency , electronic engineering , electrical impedance , acoustics , materials science , engineering , physics , electrical engineering , optoelectronics
A compact wideband bandpass filter (BPF) with broad stopband using hybrid half‐mode substrate integrated waveguide (HMSIW) resonator and open‐circuit tri‐section SIRs (OTSIRs) is proposed. A BPF with 3 transmission poles (TPs) and 3 transmission zeros is obtained by cascading the HMSIW resonator and OTSIRs using J and K inverters. A demonstrated wideband BPF with the stopband up to 4.4 times the designed center frequency for a 20 dB rejection level is designed, fabricated and measured. The measured results verify the predicted attractive features.