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一、引言盘荷波导腔间的耦合特性主要由相邻腔间的直接耦合系数k_0和与下一个腔(即第n和n+2腔)之间的间接耦合系数k_1表征。k_0主要反映盘荷波导相对带宽的大小。在盘荷波导中,通过栏片孔的电耦合古主导地位,k_0为正,是一种向前波结构。k_1主要反映通带曲线中部的微小变化。由于耦合谐振腔链模型也可用来分析工作于行波状态的盘荷波导的一些重要特性,了解耦合系数与结构参数的关系是十分有意义的。
I. INTRODUCTION The coupling characteristics of the disk-carrier waveguide cavity are mainly characterized by the direct coupling coefficient k_0 between adjacent cavities and the indirect coupling coefficient k_1 with the next cavity (ie the n th and n + 2 th cavity). k_0 mainly reflects the relative bandwidth of the waveguide dish. In the disk-load waveguide, the electrical dominance of the electrical coupling through the aperture of the column, k_0 is positive, is a forward wave structure. k_1 mainly reflects the small changes in the middle of the passband curve. Because the coupled resonator chain model can also be used to analyze some important characteristics of the disk-load waveguide operating in the traveling wave state, it is of great significance to understand the relationship between the coupling coefficient and the structural parameters.