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PIER PIER B PIER C PIER M PIER Letters
2009-09-09
Design of Triple-Mode Bandpass Filter Using Improved Hexagonal Loop Resonator
By
Shao-Guo Mo,

    Dr. Shao-Guo Mo

    Institute of Applied Physics

    University of Electronic Science and Technology of China

    China

    Homepage

Zhi-Yuan Yu,

    Dr. Zhi-Yuan Yu

    School of Physic electronics

    University of Electronic Science and Technology of China

    China

    Homepage

Long Zhang

    Mr. Long Zhang

    University of Electronic Science and Technology of China

    China

    Homepage

Progress In Electromagnetics Research, Vol. 96, 117-125, 2009
doi:10.2528/PIER09080304
Abstract
A novel triple-mode hexagonal bandpass filter with capacitive loading stubs is introduced in this article. The technique, adding an open capacitive stub, is applied to enlarge the equivalent self-capacitance of the resonator, which declines its resonant frequencies. Three radial-line stubs in the center of top layer are used to implement this technique. One mode resonant frequency is varied with the radii of three radial-line stubs, while the other two modes are nearly not affected. This filter has a pair of transmission zeros which are close to the passband, thus it behaves with high selectivity. For method validation, a bandpass filter operating at 2.4 GHz is fabricated and measured. The experimental results are demonstrated and discussed.
Citation
Shao-Guo Mo, Zhi-Yuan Yu, and Long Zhang, "Design of Triple-Mode Bandpass Filter Using Improved Hexagonal Loop Resonator," Progress In Electromagnetics Research, Vol. 96, 117-125, 2009.
doi:10.2528/PIER09080304
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