Abstract

A 14-pole high-temperature superconducting dual narrowband bandpass filter with high-selectivity and wide stopband is presented in this paper. The filter enables independent control of the center frequencies of the first and second bands. The mixed electric and magnetic coupling coefficients can be changed by adjusting the distances between resonators, and controllable transmission zeros can be generated in the lower or/and upper stopband. Finally, two filters with two transmission zeros and six transmission zeros are design.

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