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A parallel coupled‐line bandpass filter with wide stopband using slotted ground structures
Author(s) -
Weng MinHang,
Wu HungWei,
Chang YuChi,
Huang ChunYueh,
Su YanKuin
Publication year - 2007
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.22065
Subject(s) - stopband , band pass filter , microwave , harmonic , line (geometry) , band stop filter , electronic engineering , filter (signal processing) , engineering , topology (electrical circuits) , acoustics , physics , electrical engineering , low pass filter , telecommunications , geometry , mathematics
This letter proposes a parallel coupled‐line bandpass filter (BPF) using the folded slotted ground structures (SGSs) to improve the wide stopband. It is shown that the designed folded SGS has a very small area in comparison of previous works. The folded SGS exhibits a dual stopband characteristic owing to the bandgap resonant characteristic of SGS to suppress the harmonic frequency of the parallel coupled‐line BPF. Good agreement with electro‐magnetic simulation and measurement is demonstrated. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 159–162, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22065
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