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2009-09-09
Design of Triple-Mode Bandpass Filter Using Improved Hexagonal Loop Resonator
By
Progress In Electromagnetics Research, Vol. 96, 117-125, 2009
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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