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UWB BANDPASS FILTER USING DUAL STEPPED IMPEDANCE STUB LOADED RESONATORS

Authors
Oh, SangyeolShin, BeomsooJeong, JichaiKim, Young-SikLee, Jaehoon
Issue Date
2월-2014
Publisher
WILEY-BLACKWELL
Keywords
bandpass filters; stepped-impedance stub loaded resonator; ultrawide band; wideband; dual resonators
Citation
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, v.56, no.2, pp.448 - 450
Indexed
SCIE
SCOPUS
Journal Title
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
Volume
56
Number
2
Start Page
448
End Page
450
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/99448
DOI
10.1002/mop.28117
ISSN
0895-2477
Abstract
In this article, a new ultrawideband (UWB) bandpass filter is proposed, with dual stepped-impedance stub-loaded resonators (SISLRs). As the proposed filter can provide the better in-band performance due to the dual SISLRs, it was possible to design this UWB filter without apertures in the ground plane. The passband performance of the proposed filter is superior to that of the conventional filter based on a single SISLR with aperture-backed interdigital coupled-lines, while the resonant frequencies and sharp rejection skirt characteristics of the conventional filter are retained without apertures in the ground plane. The performance of the new filter was confirmed by simulation with a full-wave electromagnetic simulator and by actual implementation and measurement. The passband of the implemented filter covers the range of 3.24 approximate to 11.03 GHz. The group delay is less than 0.5 ns and flat in the passband, and sharp attenuations appear near the passband. (c) 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:448-450, 2014
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