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|Title:||Triple-mode bandpass filters on stub-loaded resonator with novel I/O coupling scheme||Authors:||Zhang, Songbai
|Keywords:||DRNTU::Engineering::Electrical and electronic engineering||Issue Date:||2012||Source:||Zhang, S.,& Zhu, L. (2012). Triple-mode bandpass filters on stub-loaded resonator with novel I/O coupling scheme. 2012 Asia Pacific Microwave Conference Proceedings, 532-534.||Abstract:||In this paper, a novel I/O stage coupling scheme is presented for exploration of a triple-mode bandpass filter with improved out-of-band performance. A triple-mode stub-loaded resonator is first formed by tap-connecting a λ/2 resonator with a pair of open-ended stubs of less than λ/4 in length at its two symmetrical positions. Thus, three resonant modes are excited to make up a three-pole passband, above which a transmission zero is produced as well. Next, these two stubs are flared apart to create an additional pair of transmission zeros in the lower stopband and the U-shaped I/O coupled lines are applied to suppress the inherent spurious response of the stub-loaded resonator. As a result, a triple-mode bandpass filter, which is self-contained with two transmission zeros at both upper and lower stopbands, is constituted. Finally, the two proposed triple-mode bandpass filters are designed and fabricated to provide an experimental validation for the predicted performances.||URI:||https://hdl.handle.net/10356/98829
|DOI:||http://dx.doi.org/10.1109/APMC.2012.6421654||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||EEE Conference Papers|
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