UM
Compact triple-mode microstrip bandpass filter
Zhang S.2; Zhu L.2; Li R.1; Jin C.1
2012-12-01
Source PublicationProceedings of the 2012 IEEE 14th Electronics Packaging Technology Conference, EPTC 2012
Pages641-644
AbstractIn this paper, a novel I/O stage coupling scheme is presented for exploration of a microstrip triple-mode bandpass filter with improved out-of-band rejection performance. Firstly, a modified microstrip triple-mode stub-loaded resonator is formed by tap-connecting a λ/2 microstrip line resonator with a pair of open-circuited stubs of less than λ/4 in length at its two symmetrical positions. As such, three resonant modes are properly excited to make up a three-pole passband, above which a transmission zero attributed to the virtual ground of open-circuited stub is produced as well. Next, these two stubs are flared apart not only to avoid harmful parasitic coupling, but also to create an additional pair of transmission zeros in the lower stopband. As a result, a triple-mode bandpass filter, which is self-contained with two transmission zeros at both upper and lower stopbands, is theoretically constituted. Finally, the proposed microstrip triple-mode bandpass filter is designed and fabricated to provide an experimental validation for the predicted frequency responses. © 2012 IEEE.
DOI10.1109/EPTC.2012.6507160
URLView the original
Language英語
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Document TypeConference paper
CollectionUniversity of Macau
Affiliation1.A-Star, Institute of Microelectronics
2.Nanyang Technological University
Recommended Citation
GB/T 7714
Zhang S.,Zhu L.,Li R.,et al. Compact triple-mode microstrip bandpass filter[C],2012:641-644.
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