摘要
设计了 1V ,2 .5 GHz的全集成压控振荡器 .通过优化集成电感的设计 ,同时采用 NMOS管和开关电容阵列作为可变电容 ,使该设计具有较低的相位噪声和较宽的调谐范围 .采用 0 .18μm CMOS工艺进行仿真 ,结果显示 ,在1V电源电压下 ,在偏离中心频率 6 0 0 k Hz处的相位噪声为 - 119d Bc/ Hz,调谐范围为 2 8% ,功耗为 3.6 m W.
A 1V,2.5GHz VCO is designed with an on-chip inductor.Through inductor optimization,the VCO has a low phase noise and a wide tuning range with switched capacitor array and NMOS varactor.Simulation results with 0.18μm CMOS process show that the phase noise is -119dBc/Hz at 600kHz offset frequency,the tuning range is 28%,and the power consumption is 3.6mW.