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Progress In Electromagnetics Research Letters
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HIGHLY SELECTIVE SUSPENDED STRIPLINE DUAL-MODE FILTER

By B. A. Belyaev, A. A. Leksikov, A. M. Serzhantov, and V. V. Tyurnev

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Abstract:
Miniature bandpass filter constructions based on a novel dual-mode suspended stripline resonator are proposed. Because of a special structure of the resonator, the frequencies of two first oscillation modes may be brought closer together. That allows realizing narrowband filters with the wide upper stopband. The filters have low insertion loss in the passband at small dimensions. Several transmission zeros substantially improve the filter performance. The derived coupling coefficients account for some features in the frequency response of the filter. The second-order and fourth-order filters with transmission zeros have been fabricated and measured.

Citation:
B. A. Belyaev, A. A. Leksikov, A. M. Serzhantov, and V. V. Tyurnev, "Highly Selective Suspended Stripline Dual-Mode Filter," Progress In Electromagnetics Research Letters, Vol. 25, 57-66, 2011.
doi:10.2528/PIERL11053001

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