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Progress In Electromagnetics Research Letters
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NOVEL HIGH-SELECTIVITY DUAL-BAND SUBSTRATE INTEGRATED WAVEGUIDE FILTER WITH MULTI-TRANSMISSION ZEROS

By G. H. Li, X.-Q. Cheng, H. Jian, and H.-Y. Wang

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Abstract:
A novel dual-band filter based on substrate integrated waveguide (SIW) is presented in this paper. The proposed filter is composed of two filters with different center frequencies and bandwidths, where they share the input and output ports with source-load coupling using rectangular SIW cavity structure. Muliti-transmission zeros have been obtained through electrical coupling between the source and load, which improves the frequency-selective characteristics of the filter greatly. Finally, a Ku-band substrate integrated waveguide dual-band filter with bandwidths of 220 MHz and 120 MHz was finally designed, fabricated, and measured. The measurement results are found to be in good agreement with the simulation results.

Citation:
G. H. Li, X.-Q. Cheng, H. Jian, and H.-Y. Wang, "Novel High-Selectivity Dual-Band Substrate Integrated Waveguide Filter with Multi-Transmission Zeros," Progress In Electromagnetics Research Letters, Vol. 47, 7-12, 2014.
doi:10.2528/PIERL14051801

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