低增益变化宽线性范围低噪声压控振荡器设计  

Design of Low Phase Noise Voltage Controlled Oscillator with Low Tuning-gain Change and Wide Linear Range

作　　者：郑金汪 陈华[1] 倪侃[2] 郭桂良[1] 张润曦[2] 刘生有[1] 来强涛[1] 阎跃鹏[1] 

机构地区：[1]中国科学院微电子研究所,北京100029 [2]华东师范大学微电子电路与系统研究所,上海710054

出　　处：《微电子学与计算机》2014年第6期84-90,共7页Microelectronics & Computer

基　　金：国家"八六三"重大专项资助项目(2011AA040102)

摘　　要：应用TSMC 0.18μm CMOS工艺设计了一款低调谐增益变化,恒定调谐曲线间隔,恒定输出摆幅的低功耗低噪声宽带压控振荡器(Voltage Controlled Oscillator,VCO).本振荡器的振荡频率覆盖1.153~1.911GHz(49.5%)范围,相邻调谐曲线的覆盖范围大于50%,调谐增益变化范围为45.5~52.7MHz/V(13.7%),相邻调谐曲线间距变化范围为43.2~45.9MHz(5.9%),VCO输出波形的峰峰值为694~715mV(3%),调谐曲线的线性范围为0.2~1.6V(1.4V).在1.8V的电源电压下,VCO在中心频率1.53GHz处耗电电流为3.2mA,相位噪声在1MHz频偏处为-130.5dBc/Hz,FOM值为-186.5dBc/Hz.Based on 0.18μm CMOS process,a low power low phase noise broadband VCO with low tuning-gain change constant tuning curve interval and constant output swing was presented.Switched capacitor array,varactor array with bias voltage and the tail current array was included in this VCO.The tuning range of VCO is 1.153~ 1.911GHz(49.5%).The coverage of adjacent tuning curve is more than 50%.The tuning-gain of VCO is 45.5~ 52.7MHz/V(13.7%).The space of adjacent tuning curve is 43.2~45.9MHz(5.9%).The output swing of VCO is 694~715mV(3%).The linear range of tuning curve is 0.2~1.6V(1.4V).At a 1.8Vsupply and the center frequency 1.53GHz,the VCO measures a phase noise of-130.5dBc/Hz@1MHz offset while dissipating 3.2mA current.The FOM of the VCO is-186.5dBc/Hz.

关 键 词：频率综合器 压控振荡器 低调谐增益变化 低功耗 低相位噪声 

分 类 号：TN752[电子电信—电路与系统]