Novel compact microstrip parallel-coupled bandpass filters with lumped-element J-inverter

Yo Shen Lin, Chun Hsiung Chen

研究成果: 書貢獻/報告類型會議論文篇章同行評審

5 引文 斯高帕斯(Scopus)

摘要

Novel compact parallel-coupled bandpass filters are proposed, by using additional lumped-element capacitor as J-inverter between short-ended coupled-line sections to achieve an equivalent to the quarter-wavelength resonator filters. As a result, the filter order can be doubled without increasing the circuit area, and no repeated passband at twice the center frequency is observed. In addition, lower power loss is obtained compared to the previous works based on open-ended coupled-line sections. By introducing an inductive cross-coupling effect, two transmission zeros at upper and lower stopbands may also be created. The locations of the transmission zeros may be simply adjusted by varying the cross-coupling inductance. Simple equivalent-circuit models along with design equations are also established, from which the proposed parallel-coupled bandpass filters with lumped-element J-inverter may be designed and investigated. Specifically, several compact 2nd-order microstrip bandpass filters with good selectivity are implemented and carefully examined.

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主出版物標題APMC 2005
主出版物子標題Asia-Pacific Microwave Conference Proceedings 2005
DOIs
出版狀態已出版 - 2005
事件APMC 2005: Asia-Pacific Microwave Conference 2005 - Suzhou, China
持續時間: 4 12月 20057 12月 2005

出版系列

名字Asia-Pacific Microwave Conference Proceedings, APMC
4

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???event.eventtypes.event.conference???APMC 2005: Asia-Pacific Microwave Conference 2005
國家/地區China
城市Suzhou
期間4/12/057/12/05

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