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A novel compact dual‐band bandpass filter using spiral‐shaped microstrip resonators
Author(s) -
Huang ChienHsiang,
Li HsiaoChun,
Chen ChienHsun,
Horng TzyySheng
Publication year - 2010
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.24965
Subject(s) - band pass filter , resonator , electronic filter topology , electronic engineering , microstrip , multi band device , m derived filter , butterworth filter , prototype filter , filter (signal processing) , microwave , physics , topology (electrical circuits) , engineering , electrical engineering , telecommunications , filter design , antenna (radio)
In this letter, a dual‐band bandpass filter is proposed by consisting of spiral‐shaped microstrip resonators. Meanwhile, a skew‐symmetric tapped feed structure is applied to introduce two transmission zeros on both sides of individual passbands, and thereby improve the filter selectivity. The measured results of the designed third‐order dual‐band bandpass filter for 2.4/5.2 GHz wireless local area network applications are in good agreement with the simulated predictions. Moreover, the filter has a size reduction of 40%, as compared with the conventional square open‐loop bandpass filters. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 543–547, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24965