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Ultra wideband bandpass filter using stub-loaded quintuple-mode resonator

✍ Scribed by Hong-Wei Deng; Yong-Jiu Zhao; Lu Zhang; Xue-Shun Zhang; Wei Zhao

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
728 KB
Volume
52
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this article, a compact ultra wideband (UWB) bandpass filter (BPF) with sharp rejection skirt is realized using quintuple‐mode stub‐loaded resonator.The resonator can generate three odd‐modes and two even‐modes in the desired band. By simply adjusting the lengths of open stubs in shunt and short‐circuited stubs, the first five resonant modes of the resonator can be roughly allocated within the 3.1–10.6 GHz UWB band meanwhile the sixth resonant mode in the upper‐stopband can be suppressed. The pair of short stubs can generate two transmission zeros near the lower and upper cut‐off frequencies, leading to a sharp rejection skirt. Finally, a quintuple‐mode UWB BPF is designed and fabricated and the measured results demonstrate the feasibility of the design process. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2579–2580, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25520

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