基于multisim10.0的非线性电路分析方法仿真研究

非线性电路具有频率变换作用，在通信系统中广泛应用于对信号的调制、解调和混频等处理功能。非线性电路不满足叠加定理，通常采用开关函数分析法、时变电路分析法和环形电路分析法等解析法对其分析，数学分析复杂，较难理解。Multisim10.0电路仿真软件仪器丰富、器件齐全，电路仿真波形观察直观。借助于Multisim10.0电路仿真软件，对上述3种非线性电路分析方法进行了仿真，并根据仿真结果从非线性电路输入、输出波形变换和频谱变换两方面分析了非线性电路的作用。基于Multisim 10.0的电路仿真分析，简化了非线性电路分析方法，有助于对非线性电路频率变换作用的理解。

Simulation research of nonliner circuit’s analysis method based on Multisim 10 .0

In communication systems, nonliner circuit was widly used because it could tranform frequency. But nonliner circuit could not analyzed by superposition theorem, it need to be analyzed by switching function method, time varied circuit analysis method, and ring circuit analysis method. It is difficult to be analyzed by analytical method, and it is often more difficult to be understood. With the help of Multisim 10.0 circuit simulation software, the nonliner circuit can be analyzed from input wave and output wave and spectrum transform. The analysis of the circuit based on Multisim 10.0 is simple and it is also easy to be understood.