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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2012-10-17
Compact Bandpass Filter with Mixed Electric and Magnetic (EM) Coupling
By
Bo Fu,

    Mr. Bo Fu

    Research Institute of Electronic Science and Technology

    University of Electronic Science and Technology of China

    China

    Homepage

Xubo Wei,

    Dr. Xubo Wei

    Research Institute of Electronic Science and Technology

    University of Electronic Science and Technology of China

    China

    Homepage

Xue Zhou,

    Dr. Xue Zhou

    Research Institute of Electronic Science and Technology

    University of Electronic Science and Technology of China

    China

    Homepage

Meijuan Xu,

    Ms. Meijuan Xu

    Electronic Science and Technology

    University of Electronic Science and Technology

    China

    Homepage

Jiaxuan Liao

    Dr. Jiaxuan Liao

    Research Institute of Electronic Science and Technology

    University of Electronic Science and Technology of China

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 35, 107-114, 2012
doi:10.2528/PIERL12090314 | Google Scholar

Abstract
A compact wide-band bandpass filter (BPF) with high frequency selectivity using stepped impedance resonators (SIRs) is presented in this paper. The proposed BPF consists of four SIRs, which share a common grounded via-hole. To improve the frequency selectivity, multiple transmission zeros (TZs) are employed in the stopband by mixed electric/magnetic (EM) coupling. The novel filter with 32.2% fractional bandwidth (FBW) has been designed and fabricated to verify the validity of the proposed method. Measured results are in good agreement with the electromagnetic simulation. The measured results show three finite transmission zeros in the stopband, located at 2.47 GHz, 5.26 GHz, 9.39 GHz, respectively. The circuit size of proposed BPF only occupies 3.10 x 13.30 mm2.
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Citation
Bo Fu, Xubo Wei, Xue Zhou, Meijuan Xu, and Jiaxuan Liao, "Compact Bandpass Filter with Mixed Electric and Magnetic (EM) Coupling," Progress In Electromagnetics Research Letters, Vol. 35, 107-114, 2012.
doi:10.2528/PIERL12090314
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