针对微波集成电路/单片微波集成电路中不连续性的导波结构,系统地综述了一种提取高次模的方法。该方法基于时域有限差分(FDTD)法的麦克斯韦方程求解技术,结合频域奇异值分解分析方法而实现。对基于系统的传输模态分析,该方法用于研究微波集成电路/单片微波集成电路中的不连续性,可确定系统的模式散射参数(S-参数)。文中所有结构宽波段的分析结果表明,这种方法计算准确、高效。 Aiming at the discontinuity of guided wave structure in microwave integrated circuit / monolithic microwave integrated circuit, a method of extracting high order mode is systematically reviewed. This method is based on Maxwell’s equation solving technique of finite difference time domain (FDTD) method, combined with the method of frequency domain singular value decomposition analysis. For system-based transmission modal analysis, this method is used to study discontinuities in microwave integrated circuits / monolithic microwave integrated circuits and to determine the mode scattering parameters (S-parameters) of the system. The analysis results of the wide band of all structures in this paper show that this method is accurate and efficient.