用于非线性行为级仿真的Cann模型  

On Use of Cann＇s Model for Nonlinear Behavioral - Level Simulation

作　　者：刘瑛[1] 孙丽君[1] 

机构地区：[1]中国电子科技集团公司第33研究所信息网络中心山西·太原030006

出　　处：《电子材料与电子技术》2014年第4期31-35,共5页Electronic Material & Electronic Technology

摘　　要：本文对用于非线性电路和系统建模的Cann模型进行了研究。研究显示在多数情况下（其没有导数，相应地也不能推导到泰勒级数），该模型对弱信号具有非物理行为，并会对非线性产品产生错误的预测。如果要在仿真（互调、邻道功率等）过程中考虑非线性，应该避免使用Cann模型，或至少也应该谨慎使用。The use of cann＇ s model for modeling nonlinear circuits and systems is discussed in this paper. It is shown that this model has a nonphysieal behavior for the small- signal regime in most cases（it has no some deriv- atives and, correspondingly, cannot be expanded in a tayior series）and gives incorrect predictions for nonlinear prod- ucts. When nonlinearities are to be taken into account in the simulation（ intermodulation, adjacent channel power, etc. ）, the use of cann＇ s model should be avoided or at least it should be used with extreme care.

关 键 词：行为级模拟 Cann模型 非线性模型 

分 类 号：TN702[电子电信—电路与系统]