Compact and high-selectivity microstrip bandpass filters using triple-/quad-Mode stub-loaded resonators
Zhang S.; Zhu L.
2011-10-01
Source PublicationIEEE Microwave and Wireless Components Letters
ISSN15311309
Volume21Issue:10Pages:522-524
Abstract

In this letter, a class of triple-/quad-mode stub-loaded resonators is proposed and analyzed for application in bandpass filters (BPFs). First, a pair of two identical open-ended stubs, shorter than λ/2, are tap-connected to a λ/2 resonator at two symmetrical positions with respect to its center. It results to excite three resonant modes closely to each other while producing a transmission zero above its resonant frequencies. Next, a single open-ended stub, longer than λ/2, is introduced at the center of the resonator. This arrangement is made to bring out a fourth resonant mode approaching the above three modes while causing a transmission zero below all of them. As such, a quad-mode resonator, self-contained with two transmission zeros, is theoretically constituted. Finally, the triple- and quad-pole BPFs with miniaturized size and sharpened roll-off skirts are designed and fabricated to provide an experimental validation on the predicted performances of the proposed filters. © 2011 IEEE.

KeywordBandpass Filter (Bpf) Roll-off Skirt Stub-loaded Resonator Transmission Zero Triple-/quad-mode Resonator
DOI10.1109/LMWC.2011.2166252
URLView the original
Indexed BySCIE
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000295687200004
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Citation statistics
Cited Times [WOS]:64   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
AffiliationNanyang Technological University
Recommended Citation
GB/T 7714
Zhang S.,Zhu L.. Compact and high-selectivity microstrip bandpass filters using triple-/quad-Mode stub-loaded resonators[J]. IEEE Microwave and Wireless Components Letters,2011,21(10):522-524.
APA Zhang S.,&Zhu L..(2011).Compact and high-selectivity microstrip bandpass filters using triple-/quad-Mode stub-loaded resonators.IEEE Microwave and Wireless Components Letters,21(10),522-524.
MLA Zhang S.,et al."Compact and high-selectivity microstrip bandpass filters using triple-/quad-Mode stub-loaded resonators".IEEE Microwave and Wireless Components Letters 21.10(2011):522-524.
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