含场线耦合的非线性级联传输线网络分析

Analysis of Nonlinear Cascaded Transmission Line Network Considering Field-to-Transmission Line Coupling

针对非线性级联传输线网络中的电磁环境效应问题,提出一种含场线耦合的非线性级联传输线网络分析方法。在传统场线耦合Taylor模型的基础上,将含场线耦合的传输线等效为有源二端口网络,采用基于频域黑箱模型的大信号S参数表征非线性组件,利用插值和迭代技术结合ABCD矩阵求解端口响应,以分析外场辐照对非线性级联传输线网络工作状态的影响。以若干算例求解其受扰响应,验证了该分析方法的有效性和准确性。采用该方法可以对外部电磁干扰下级联传输线网络的非线性响应行为进行预测。

To provide protection against electromagnetic environment effects on a nonlinear cascaded transmission line network,a method for analysis of nonlinear cascaded transmission line network considering electromagnetic field-to-transmission line coupling is proposed in this paper.Based on Taylor model,the transmission line illuminated by an external electromagnetic field is equivalent to an active two-port network.Large-signal S-parameters based on the frequency domain black-box model are used to characterize the nonlinear network.And then,combining interpolation iterative algorithm and ABCD matrix transformed by S-parameters,the solution of port response is obtained to analyze effects of external electromagnetic field on nonlinear cascaded transmission-line network. Various numerical examples are presented to demonstrate the validity and accuracy of the proposed method. Using this method,the nonlinear response behavior of the cascaded transmission line network under external electromagnetic interference can be predicted.