有线电视屏蔽传输电缆电容的LBEM分析

摘要

Television signal is taken to millions of households with shielded mulliconductor cables,and the characteristic parameters such as capacitance , inductance and so on are important to evaluate the quality of television signal on shielded multiconductor cables. The linear boundary element method (LBEM) is presented as a approach for the annlysis and design of various shielded multiconductor cables. Three representative computational examples, the capacitance of CATV various shielded multiconductor cable is not only concerned with conductors arrangement,but also sectional shape.%屏蔽传输电缆把电视信号送进千家万户,而电感、电容等特性参数对传输电缆上的信号质量评估起着重要作用.介绍用线性边界元计算多芯屏蔽传输电缆电容的基本原理,3个工程实例的计算结果表明:有线电视屏蔽传输电缆电容不仅与芯线排列有关,还与芯线截面形状有很大关系.