环形行波振荡器电路模型分析与优化设计  

Modeling and optimization of rotary traveling wave oscillator

作　　者：张华锋[1] 卓成[1] 周金芳[1] 陈抗生[1] 

机构地区：[1]浙江大学信息与电子工程学系,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2009年第4期634-640,共7页Journal of Zhejiang University：Engineering Science

基　　金：国家教育部博士点基金资助项目(20060335065);浙江省自然科学基金资助项目(Y106513)

摘　　要：为了提高环形行波振荡器(RTWO)的设计效率,提出一种高效的全局优化方法.系统地分析了电路模型,通过曲线拟合将传输线分布参数和电路性能参数表示成正多项式函数形式,优化问题被归结为一个几何规划(GP)问题,可采用凸优化解法进行高效的全局求解.低功耗优化实验结果表明,与初始设计相比,对于振荡频率为12GHz的设计,基于几何规划的优化方法最大可降低83.12%的功耗;与已有的低功耗优化方法相比,该方法效率更高,得到的电路功耗更低,振荡信号波形质量更好.An efficient method for the global optimization of rotary traveling wave oscillator （RTWO） was proposed. The equations of transmission line parameters and performance measures were formulated in polynomial form by curve fitting based on the systematic analysis of the equivalent circuit model. The optimization problem was relaxed to be a geometric programming （GP） which could be efficiently solved with a convex optimization solver. Low power experimental results show that up to 83.12% of power dissipation was reduced for a 12 GHz design compared to the power-unaware design. The scheme is more efficient and results in designs with lower power dissipation and better signal waveforms compared with an existing lowpower design method.

关 键 词：时钟网 环形行波振荡器 几何规划 全局优化 低功耗设计 

分 类 号：TN752.5[电子电信—电路与系统]