提出了一种改进的 PEEC模型 ,它以矢量磁位的积分表达式和洛仑兹规范代替了矢量磁位和标量电位的积分表达式 ,对积分方程进行展开。这样做可以避免复杂介质结构中的电容矩阵提取 ,大大节省了计算时间。同时 ,它以描述系统的改进节点法方程 (MNA)代替了具体的等效电路。这一模型可方便地嵌入更大的系统进行分层次的综合分析中。数值计算的结果与其他文献吻合较好 ,表明该方法有较高的可靠性。 An improved PEEC model is proposed, in which the integral expression of vector magnetic potential and scalar potential is replaced by integral expression of vector magnetic bit and Lorentz standard, and the integral equation is expanded. This avoids the extraction of the capacitance matrix in a complex dielectric structure, which greatly saves computation time. At the same time, it replaces the specific equivalent circuit with the improved nodal equation (MNA) that describes the system. This model can easily be embedded in a larger system for a comprehensive, hierarchical analysis. The numerical results agree well with other documents, indicating that the method has high reliability.