一种∑△小数N频率综合器的系统仿真方法  

System Simulation Approach for ∑△ Fractional-N Frequency Synthesizers

作　　者：杨洪文[1] 赵兴[1] 刘永刚[1] 阎跃鹏[1] 

机构地区：[1]中国科学院微电子研究所,北京100029

出　　处：《系统仿真学报》2009年第9期2488-2491,共4页Journal of System Simulation

摘　　要：快速有效的频率综合器系统仿真可对∑△小数N分频频率综合器的设计实现提供有效的帮助,对此建立了基于Simulink的∑△小数N分频频率综合器的电路模型,并提出了利用此模型进行准电路级时域仿真和利用Cppsim行为级仿真相结合的联合仿真方法。该方法可以更好的仿真频率综合器的频域特性,时域特性和噪声特性,验证电路结构的正确性,提高系统仿真的完备性。Fast and accurate system-level simulation is indispensable for the design of ∑△ fractional-N frequency synthesizers. Based on Simulink a set of circuit models of fractional-N frequency synthesizers was built. Then a new simulation method combining the time domain circuit simulation was proposed using the Similink models with the behavioral-level simulation using Cppsim. This method could better predict the phase noise, illustrate the time and phase domain characteristics as well as verify the circuit structures. Thus the completeness of the system simulation is improved.

关 键 词：∑△ 小数N 频率综合器 行为级仿真 SIMULINK 

分 类 号：TN742.1[电子电信—电路与系统]