Premium
High selectivity dual‐wideband bandpass filter with triple‐mode stub‐loaded stepped‐impedance resonators
Author(s) -
Deng HongWei,
Liu Bing,
Zhao YongJiu,
Chen Wen,
Zhang XueShun
Publication year - 2011
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.26371
Subject(s) - passband , band pass filter , stub (electronics) , resonator , wideband , frequency selectivity , electronic engineering , bandwidth (computing) , materials science , acoustics , physics , optoelectronics , engineering , telecommunications
A novel high selectivity dual‐wideband microstrip bandpass filter (BPF) with two triple‐mode stub‐loaded stepped‐impedance resonators (SIRs) is proposed in this letter. Either of the SIRs can not only separately generate one passband but also control the passband performance. Because of the intrinsic characteristics of the SIRs, four transmission zeros can be generated to improve the selectivity. A dual‐wideband filter with the fractional bandwidth 15.4% and 10.2% is designed and fabricated. The dual‐wideband filter is evaluated by experiment and simulation with good agreement. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2851–2854, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26371