应用于光接收机的环形压控振荡器设计  

Design of Ring VCO for Optical Receiver

作　　者：欧乐庆[1] 郑坚[1] 刘文松[1] 唐路[2] 逯帅 OU Leqing;ZHENG Jian;LIU Wensong;TANG Lu;LU Shuai(28th Institute of China Electronics Technology Group,Nanjing 210000;School of Information Science and Engineering,Southeast University,Nanjing 210096)

机构地区：[1]中国电子科技集团公司第二十八研究所,南京210000 [2]东南大学信息科学与工程学院,南京210096

出　　处：《计算机与数字工程》2018年第3期588-591,共4页Computer & Digital Engineering

基　　金：国家自然科学基金项目<纳米cmos工艺高速数模混合锁相环频率合成器非理想特性模型研究>(编号:61674036)资助

摘　　要：研究了光接收机中环形压控振荡器。设计基于差分放大器的改进型增益级,以减小增益级的延迟与振荡器的相位噪声。采用0.13μm CMOS工艺,设计一种应用于锁相环时钟恢复电路的双延时路径环形压控振荡器。版图后仿结果显示:所设计压控振荡器电路可工作在6.2GHz^11.5GHz频段,具有较低相位噪声。Design of ring voltage controlled oscillator(VCO)for application in an optical receiver is studied in this paper.An improved delay cells based on differential amplifiers is proposed to reduce the delay of the cell and the phase noise of the oscillator.Base on the proposed delay cell,an even stage ring VCO for a phase locked loop(PLL)clock recovery circuit is designed with a0.13μm CMOS process.Post simulation results of the chip layout indicate that the proposed VCO works well at the frequency band of6.2GHz^11.5GHz with low phase noise.

关 键 词：集成电路设计 锁相环 压控振荡器 相位噪声 

分 类 号：TN752[电子电信—电路与系统]