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AN SIW QUASI-ELLIPTIC FILTER WITH A CONTROLLABLE BANDWIDTH BASED ON CROSS COUPLING AND DUAL-MODE RESONANCE CAVITY

By X. An, Q. Zhou, and Z.-Q. Lv

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Abstract:
In this paper a substrate integrated waveguide (SIW) quasi-elliptic filter with a controllable bandwidth is proposed. The quasi-elliptic filter response is caused by the cross coupling technique and a dual-mode resonance cavity. The dual-mode resonance cavity with TE101 and TE102 modes is used to generate the passband, and the cross coupling provides two signal transmission paths to produce transmission zeros (TZs). The bandwidth of the filter can be controlled by a pair of disturbing metallic via-holes. A quasi-elliptic filter with the center frequency of 11.03 GHz is designed, fabricated and measured. The experiment data agree well with the simulated ones.

Citation:
X. An, Q. Zhou, and Z.-Q. Lv, "An SIW Quasi-Elliptic Filter with a Controllable Bandwidth Based on Cross Coupling and Dual-Mode Resonance Cavity," Progress In Electromagnetics Research M, Vol. 76, 55-63, 2018.
doi:10.2528/PIERM18090509

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