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Wideband bandpass filter with a broad stopband based on a triple‐mode stub‐loaded resonator
Author(s) -
Wei Feng,
Guo Y. Jay,
Qin PeiYuan,
Shi Xiao Wei
Publication year - 2014
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.28732
Subject(s) - stopband , passband , resonator , stub (electronics) , band pass filter , wideband , acoustics , electronic engineering , physics , microwave , materials science , engineering , optoelectronics , telecommunications
A compact wideband bandpass filter (BPF) with a broad stopband (4.1 f 0 ) based on a triple‐mode stub‐loaded resonator (SLR) is presented in this article. Using even/odd mode analysis, the proposed SLR is found to have the ability to introduce three transmission poles in the passband. By appropriately adjusting the frequencies of these transmission poles and using a 0° tapped feed structure, the BPF can provide a wide passband and a sharp rejection over a broad stopband without using other lowpass or bandstop networks. The predicted results on S‐parameters are compared with measured ones and good agreement is achieved. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2878–2881, 2014