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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2020-09-01
A Novel Miniaturized UWB Bandpass Filter Basing on E-Shaped Defected Microstrip Structure
By
Lichang Huang,

    Dr. Lichang Huang

    School of Electronic and Information Engineering

    Anhui University

    China

    Homepage

Minquan Li,

    Professor Minquan Li

    School of Electronics and Information Engineering

    Anhui University

    China

    Homepage

Pingjuan Zhang,

    Dr. Pingjuan Zhang

    Anhui University

    China

    Homepage

Kaiyue Duan,

    Dr. Kaiyue Duan

    School of Electronic and Information Engineering

    Anhui University

    China

    Homepage

Yawen Song

    Dr. Yawen Song

    School of Electronic and Information Engineering

    Anhui University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 93, 49-57, 2020
doi:10.2528/PIERL20062601 | Google Scholar

Abstract
This paper proposes a novel miniaturized UWB bandpass filter by cascading two miniaturized low-pass and high-pass modules. On account of the slow wave and stopband characteristic of defected microstrip structure (DMS), an E-shaped DMS with low-pass characteristic is presented, and an RLC equivalent circuit is utilized to analyze it. By three-dimensional electromagnetic modeling , the S parameters can be obtained to extract the initial parameter values of the RLC equivalent circuit and verify the validity of equivalent circuit in Advanced Design System. The high-pass module uses a lump element to reduce the circuit dimension. The high frequency selectivity can be achieved by loading L-shaped stubs, which produces one transmission zero at the upper band of passband and has a good rectangle coefficient of 1.2 (25 dB-bandwidth/3 dB-bandwidth). To verify the idea, a compact UWB bandpass filter is simulated and fabricated. The result shows that the passband range is 3.1-10.6 GHz with 1 dB loss, and the measurement has a good agreement with the simulation. Besides, a notched wave working in X wave band can also be generated. Compared with the previous works, this UWB bandpass filter has the advantages of miniature and high selectivity.
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Citation
Lichang Huang, Minquan Li, Pingjuan Zhang, Kaiyue Duan, and Yawen Song, "A Novel Miniaturized UWB Bandpass Filter Basing on E-Shaped Defected Microstrip Structure," Progress In Electromagnetics Research Letters, Vol. 93, 49-57, 2020.
doi:10.2528/PIERL20062601
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