Premium
Compact bandpass filter design using folded coupled‐line resonators
Author(s) -
Wang Wen,
Fu Jeffrey S.,
Lu Yilong,
Xiong Yong Zhong
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.20714
Subject(s) - band pass filter , resonator , electronic engineering , electronic filter topology , filter (signal processing) , footprint , filter design , microwave , engineering , prototype filter , m derived filter , line (geometry) , topology (electrical circuits) , electrical engineering , mathematics , telecommunications , geometry , paleontology , biology
In this paper, a compact bandpass filter using folded λ/4 coupled‐line resonators is presented. An accurate model is made by using an efficient analytic design approach. Equations for extraction of the equivalent parallel‐coupled‐line structure representing the folded‐line section are developed. A simple systematic design procedure is established for filter designers. Finally, a three‐pole bandpass filter for the new resonators is designed. The new folded coupled‐line filter exhibits a significant reduction in footprint as compared to the conventional design. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 32–35, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20714