This paper presents a multichannel cavity filter bank with high reliability and small size. It consists of four bandpass filter channels which require high consistency and a calibration channel composed of a straightthrough cable and a lightning protection circuit board. The whole cavity simulation is carried out by HFSS to ensure the accuracy of the simulation, and the diagnosis programs (Matlab codes) of the cavity bandpass filter have been developed to extract the coupling coefficient of the filter. The Matlab and HFSS cosimulation can greatly reduce the simulation and debugging time. A multi channel filter bank and the resonator cavity with irregular shape are adopted to form the integral component structure to realize the miniaturization of the system. The phase consistency is ensured through the algorithm, the structure design, the debugging technology and so on. The threelevel lightning protection circuit is designed by taking advantage of the features of the surge suppression devices and the high reliability protection of the system is realized.
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姚远, 杨华, 谢晓, 高雅, 曹亮.高可靠性多路腔体滤波器组的设计与实现[J].压电与声光,2017,39(3):324-326. YAO Yuan, YANG Hua, XIE Xiao, GAO Ya, CAO Liang. Design and Implementation of a Multi Channel Cavity Filter Bank With High Reliability[J]. PIEZOELECTRICS AND ACOUSTOOPTICS