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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2014-01-12
Microstrip Bandpass Filters Based on Inductive-Coupled Stepped-Impedance Quarter-Wavelength Resonators
By
Fei Cheng,

    Dr. Fei Cheng

    School of Electronic Engineering

    University of Electronic Science and Technology of China

    China

    Homepage

Xianqi Lin,

    Dr. Xianqi Lin

    School of Electronic Engineering

    University of Electronic Science and Technology of China

    China

    Homepage

Yuan Jiang,

    Dr. Yuan Jiang

    School of Electronic Engineering

    University of Electronic Science and Technology of China

    China

    Homepage

Kaijun Song,

    Dr. Kaijun Song

    School of Electronic Engineering

    University of Electric Science and Technology of China

    China

    Homepage

Yong Fan

    Prof. Yong Fan

    School of Electronic Engineering

    University of Electronic Science and Technology of China

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 44, 101-106, 2014
doi:10.2528/PIERL13110805 | Google Scholar

Abstract
Inductive-coupling scheme for microstrip bandpass filters with quarter-wavelength stepped-impedance resonators is proposed. This is realized by a short-end stub which behaves as a K-inverter. It is investigated that the coupling coefficient of the resonators can be easily controlled by the length of the short-end stub. The filter has a compact size and good stopband rejection by employing the quarter-wavelength stepped-impedance resonators. The design procedure of this kind of filter is provided. Two filters working at 2.4 GHz are designed and fabricated to demonstrate the proposed method.
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Citation
Fei Cheng, Xianqi Lin, Yuan Jiang, Kaijun Song, and Yong Fan, "Microstrip Bandpass Filters Based on Inductive-Coupled Stepped-Impedance Quarter-Wavelength Resonators," Progress In Electromagnetics Research Letters, Vol. 44, 101-106, 2014.
doi:10.2528/PIERL13110805
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