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This article presents an approach based on differential evolution (DE) for extracting coupling matrix (CM) and the uneven unloaded Qs from measured S‐parameters of a narrow band coaxial‐resonator filter with losses. Different from analytical extraction methods and traditional optimization methods, nonideal effects and uneven‐Qs are chosen as unknown parameters to be optimized. In the optimization...
This paper presents a hybrid diagnosis and tuning method of coaxial cavity filter based on experience and data. The method is based on the experience of skilled staff at the initial stage of tuning, and put the bandpass and echo curve of the filter to the frequency range. In the second stages of the tuning, the phase shift is removed, which is caused by the transmission line and the higher order mode...
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