屏蔽平面传输线的色散特性分析
ANALYSIS OF DISPERSION CHARACTERISTICS OF SHIELDED PLANAR TRANSMISSION LINES
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摘要: 本文利用横向谐振法结合变分技术分析了屏蔽平面传输线的色散特性。在传输线波的传播方向,横向放置两个假想的理想短路面,构造谐振腔。根据横向谐振条件,建立了传输线的传播常数与谐振状态下的短路面之间距离的关系。应用谐振腔的变分公式,导出了确定短路面之间距离的特征方程。作为示例,数值计算了鳍线的色散特性,结果与相应文献中的数据相吻合。Abstract: The dispersion characteristics of the shielded planar transmission lines are analyzed by the transverse resonance method combining with variational technique. Two shorting planes are transversely inserted in the propagation direction so as to form a closed resonator. The dominant mode propagation constant of a transmission line is related to the distance be-tween shorting planes through the resonant condition. The characteristics equation for the distance is derived by using the variational formulation for a generalized resonator. The numerical results for the finlines are given. A comparision is made with available data in literatures.
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