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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2012-09-10
Compact Multiband Transversal Bandpass Filters with Multiple Transmission Zeroes
By
Xiaowu Zhan,

    Dr. Xiaowu Zhan

    School of Electronic Engineering

    University of Electronic Science and Technology of China

    China

    Homepage

Zong-Xi Tang,

    Dr. Zong-Xi Tang

    University of Electronic Science and Technology of China

    China

    Homepage

Hanli Liu,

    Dr. Hanli Liu

    School of Electronic Engineering

    University of Electronic Science and Technology of China

    China

    Homepage

Yunqiu Wu,

    Dr. Yunqiu Wu

    University of Electronic Science and Technology of China

    China

    Homepage

Biao Zhang

    Dr. Biao Zhang

    School of Electronic Engineering

    University of Electronic Science and Technology of China

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 34, 157-167, 2012
doi:10.2528/PIERL12080501 | Google Scholar

Abstract
Novel compact multiband microstrip transversal bandpass filters (BPF) using short-circuited or open-circuited stub-loaded half-wavelength resonators (SLR) are presented. The dual-band BPF consists of two SLRs and two T-shaped feedlines, and the tri-band BPF can be implemented by a simple reconfiguration of adding one resonator above the original circuit of the dual-band BPF. Multiple transmission zeroes are created to improve the selectivity of the filters. Furthermore, the high degree of design freedom is obtained for every passband of dual- or triple-band BPF is achieved by independent resonators and independent signal paths. To verify the proposed concept, two dual-band bandpass filters (filter I and II) and one tri-band bandpass filter (filter III) are designed and fabricated. Both theoretical and measured results are presented, with good agreements.
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Citation
Xiaowu Zhan, Zong-Xi Tang, Hanli Liu, Yunqiu Wu, and Biao Zhang, "Compact Multiband Transversal Bandpass Filters with Multiple Transmission Zeroes," Progress In Electromagnetics Research Letters, Vol. 34, 157-167, 2012.
doi:10.2528/PIERL12080501
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