CMOS集成电感的建模与仿真

摘要

In order to improve conventional models of the integrated inductor based on-chip,the design method of ADS combined with MATLAB was analysized,and the modeling progress of custom the integrated inductor with Cadence VPCM was discussed,their advantages and disadvantages were presented.Finally,aiming at the limitations of traditional FDK,an interactive variable parameter inductor model is advanced,established the fixed size inductance model based on the 2-π inductor structure,and adjusted them to fit the L and Q curve of the measured inductance.The accuracy of the model is verified.%为了优化现有的射频CMOS电路中片上集成螺旋电感的模型,分析了利用MATLAB和ADS软件协同仿真建立集成电感模型的方法,以及利用VPCM来定制集成电感的优缺点；并针对传统FDK的局限性,提出一个交互式多样化的参数可变的电感模型.以电感2-π等效模型为基础,针对特定尺寸的电感调整建立了固定尺寸电感模型；并调整到与实测电感的L及Q值曲线相拟合,验证了模型的准确性.良好的参数提取精度证明了该建模方法的灵活性和有效性,方法可用于射频以及混合信号集成电路设计.