Miniature microstrip parallel-coupled bandpass filters based on lumped-distributed coupled-line sections

Yo Shen Lin, Hsi Ming Yang, Chun Hsiung Chen

研究成果: 書貢獻/報告類型會議論文篇章同行評審

9 引文 斯高帕斯(Scopus)

摘要

Novel miniature parallel-coupled bandpass filters are proposed, by using additional lumped capacitors to reduce the lengths of coupled-line sections. With the lumped-element K-inverters at the input/output and between coupled-line sections, the proposed filter may be equivalent to the quarter-wavelength resonator filter such that no repeated passband at twice the center frequency is observed. In addition, by introducing the capacitive cross-coupling effect, two transmission zeros can be achieved. The locations of the transmission zeros may be simply adjusted by varying the cross-coupling capacitance. Simple equivalent-circuit models along with design formulas are also established, from which the proposed parallel-coupled bandpass filters based on lumped-distributed coupled-line sections may be designed and investigated. Specifically, a miniature 4th-order microstrip bandpass filter with good selectivity and stopband rejection is implemented and carefully examined.

原文???core.languages.en_GB???
主出版物標題2005 IEEE MTT-S International Microwave Symposium Digest
頁面691-694
頁數4
DOIs
出版狀態已出版 - 2005
事件2005 IEEE MTT-S International Microwave Symposium - Long Beach, CA, United States
持續時間: 12 6月 200517 6月 2005

出版系列

名字IEEE MTT-S International Microwave Symposium Digest
2005
ISSN(列印)0149-645X

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???event.eventtypes.event.conference???2005 IEEE MTT-S International Microwave Symposium
國家/地區United States
城市Long Beach, CA
期間12/06/0517/06/05

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