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利用导体表面电荷密度的截短富里埃展开式,计算了屏蔽双线传输线的电气特性。公式考虑了由于导体间距较小所引起的邻近效应。给出了传输线单位长度电容、电阻和衰减以及特性阻抗的参数曲线。讨论了平衡模传输和纵向模传输,求出了每种模最小衰减的传输线尺寸。模型传输线的电容测试值与理论值相当一致。
Using the truncated Prism expansion of the conductor surface charge density, the electrical characteristics of the shielded two-wire transmission line were calculated. The formula takes into account the proximity effect due to the small conductor spacing. The parameter curves of capacitance, resistance and attenuation per unit length of transmission line and characteristic impedance are given. The balance mode transmission and longitudinal mode transmission are discussed, and the transmission line size with the smallest attenuation of each mode is obtained. The capacitance of the model transmission line test value is in good agreement with the theoretical value.