Novel compact parallel-coupled microstrip bandpass filters with lumped-element K-inverters

Yo Shen Lin, Chi Hsueh Wang, Chao Huang Wu, Chun Hsiung Chen

研究成果: 雜誌貢獻期刊論文同行評審

45 引文 斯高帕斯(Scopus)

摘要

Novel compact parallel-coupled microstrip bandpass filters are proposed by using additional lumped inductors to realize K-inverters between coupled-line sections to achieve an equivalent to the quarter-wavelength (λ/4) resonator filters. As a result, the filter order can be doubled without increasing the circuit area, and no repeated passband is observed at twice the center frequency. In addition, by introducing the cross-coupling effect, two transmission zeros at upper and lower stopbands may be created. Simple equivalent-circuit models are also established as effective design tools. Specifically, several compact fourth-order microstrip bandpass filters with good stopband rejection are implemented and carefully examined.

原文???core.languages.en_GB???
頁(從 - 到)2324-2327
頁數4
期刊IEEE Transactions on Microwave Theory and Techniques
53
發行號7
DOIs
出版狀態已出版 - 7月 2005

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