双频激励非线性稳态电路的分析是目前电路机助分析(CAA)中的一个难题。若直接采用单频激励分析中常用的谐波平衡法(HBM),由于两个激励频率f_1和f_2的随意性,在对非线性子电路的电流响应i(t)进行傅里叶变换求其频域复交调矩阵{I(m,n)}时会遇到许多困难,这里 Analysis of dual-frequency excited nonlinear steady-state circuits is currently a difficult problem in circuit-assisted analysis (CAA). If we use the commonly used harmonic balance (HBM), which is commonly used in single-frequency excitation analysis, we obtain the current response i (t) of the nonlinear sub-circuit by Fourier transform because of the randomness of the two excitation frequencies f_1 and f_2. There are many difficulties encountered in the frequency domain reconversion matrix {I (m, n)}, here