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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2022-02-20
Study on the Effect of the Feedline Inductance in Wideband Tunable Band Pass Combline Filters
By
Seyed Mostafa Mousavi,

    Dr. Seyed Mostafa Mousavi

    Institute of Electronics

    Graz University of Technology

    Austria

    Homepage

Javad Soleiman Meiguni,

    Dr. Javad Soleiman Meiguni

    Department of Electrical and Computer Engineering

    Semnan University

    Iran

    Homepage

David Pommerenke

    Dr. David Pommerenke

    Institute of Electronics

    Graz University of Technology

    Austria

    Homepage

Progress In Electromagnetics Research Letters, Vol. 103, 25-30, 2022
doi:10.2528/PIERL22011304 | Google Scholar

Abstract
This letter proposes a novel analysis and design method of a continuously adjustable bandpass combline filter. It investigates the feedline design specifications and introduces an external quality factor (Qext) tuning structure to achieve a constant fractional bandwidth over 60% tuning bandwidth. The design approach allows to determine the optimum feedline structure for the filter andis verified by full-wave simulation and measurement. The results show a constant fractional bandwidth of 4.5% over the entire operating frequency range between 225-400 MHz.
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Citation
Seyed Mostafa Mousavi, Javad Soleiman Meiguni, and David Pommerenke, "Study on the Effect of the Feedline Inductance in Wideband Tunable Band Pass Combline Filters," Progress In Electromagnetics Research Letters, Vol. 103, 25-30, 2022.
doi:10.2528/PIERL22011304
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