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Dual‐spiral microstrip bandpass filter with two transmission zeros
Author(s) -
Li JiaLin,
Chen JianXin,
Wang JianPeng,
Xue Quan,
Xue LiangJin
Publication year - 2005
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.20814
Subject(s) - passband , electronic filter topology , band pass filter , butterworth filter , voltage controlled filter , filter (signal processing) , microstrip , electronic engineering , topology (electrical circuits) , m derived filter , elliptic filter , high pass filter , spiral (railway) , prototype filter , microwave , filter design , engineering , low pass filter , electrical engineering , telecommunications , mechanical engineering
A microstrip bandpass filter using a dual‐spiral configuration is proposed. Unlike conventional filter topology, this filter is integrated directly within 50Ω microstrip lines. The filter has a simple configuration, and compact size, and is easy to fabricate. Two transmission zeros close to the passband improve the selectivity of the filter. A demonstration filter is designed and examined, and the theoretical and experimental results are presented. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 331–332, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20814