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在电子线路的CAD中,一般用H参数等效电路替代三极管,而H参数等效电路只有在小信号系统才有较好的近似结果。本文试图将二极管的非线性i—V特性I_D=Is〔exp(qV_D/KT)-1〕在第(j+1)次估值附近进行台劳展开,建立二极管和三极管的线性化等效模型,然后用Newton—Rophson迭代进行非线直流分析,这种算法即适用小信号网络系统的分析,又适合大信号网络系统的分析。
In the electronic circuit CAD, the general equivalent of the H-parameter circuit instead of the transistor, and H-parameter equivalent circuit only in small signal systems have better approximate results. In this paper, the non-linear i-V characteristic of the diode I_D = Is [exp (qV_D / KT) -1] is expanded in the vicinity of the (j + 1) th evaluation to establish the linearized equivalent model of the diode and the transistor , And then use Newton-Rophson iterative nonlinear DC analysis, this algorithm is suitable for small signal network analysis, but also for large signal network system analysis.