volume | PIER Journals

2023-02-28

A Novel Highly Selective UWB Bandpass Filter Using Quad-Mode Stub-Loaded Resonator

Guang Yong Wei,

Dr. Guang Yong Wei

School of Electronic Information Engineering

China West Normal University

China

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Yun Xiu Wang,

Professor Yun Xiu Wang

School of Physics and Electronic Information

China West Normal University

China

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Jie Liu,

Dr. Jie Liu

School of Electronic Information Engineering & School of Physics and Astronomy

China West Normal University

China

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Yang Gao,

Dr. Yang Gao

School of Electronic and Information Engineering

China West Normal University

China

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Xiao Tao Yao

Dr. Xiao Tao Yao

School of Electronic and Information Engineering

China West Normal University

China

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Progress In Electromagnetics Research Letters, Vol. 109, 57-63, 2023

doi:10.2528/PIERL23010502

Abstract

In this letter, a novel ultra-wideband (UWB) bandpass filter (BPF) configuration with a quad-mode resonator (QMR) structure is proposed, which hasa highly selective and compact performance. The QMR is composed of a funnel-shaped resonator loaded in the middle and a low-impedance folded microstrip line. Initially, the resonant frequencies are uniformly distributed in the UWB passband by varying the length of QMR physical stubs, and later the three-line parallel coupled lines are employed to enhance coupling to obtain a flat passband. The feedlines are then loaded with a pair of λ/2 stepped impedance radial stubs (SIRSs) to provide excellent band-stop characteristics. Finally, a filter prototype is created, and its performance is evaluated using the generated data. The proposed UWB filter has sharp roll-off ratio of 99 and 63 dB/GHz, respectively, at the lower and upper edges of the passband.

Citation

Guang Yong Wei Yun Xiu Wang Jie Liu Yang Gao Xiao Tao Yao , "A Novel Highly Selective UWB Bandpass Filter Using Quad-Mode Stub-Loaded Resonator," Progress In Electromagnetics Research Letters, Vol. 109, 57-63, 2023.
doi:10.2528/PIERL23010502
http://www.jpier.org/PIERL/pier.php?paper=23010502

References

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