一种高电源噪声抑制宽线性范围CMOS压控振荡器设计  

A High Power Supply Noise Rejection and High Linearity Range CMOS Voltage-Controlled Oscillator

作　　者：孙铁[1] 惠春[1] 王芸[1] 

机构地区：[1]上海交通大学微纳科学技术研究院,上海200030

出　　处：《微电子学与计算机》2005年第10期62-65,69,共5页Microelectronics & Computer

摘　　要：给出了一种高电源噪声抑制、高线性范围CMOS压控振荡器的结构:电压调节器用于隔离外部电源以抑制高频与低频噪声,并提供稳定的内部电压给振荡器;振荡器部分则使用双环结构,同时采用改进的V-I电路,提高了VCO电压-频率转换特性的线性范围。在TSMC0.25μmN阱CMOS工艺参数下仿真表明,VCO的输出频率范围为0.081GHz至1.53GHz,控制电压调节范围81%,线性度6.9%。当输出频率为1GHz时,电源电压变化1V引起的输出周期变化为3ps。A high power supply noise rejection ,high linearity range CMOS voltage-controlled oscillator circuit is presented： The voltage regulator is used to suppress high/low frequency noise by isolation from power supply and to make stable internal voltage for oscillator; also, dual-path oscillator is adopted and a modification is made in voltage-current converter to enhance VCO voltage-frequency convert linearity range. The simulation results under 0.25μm TSMC n-well CMOS process show that the VCO output frequency range is 0,081GHz to 1.53GHz with 81% control voltage turning range and linearity of 6.9%; 1V supply voltage change induces 3ps period change when output frequency is at 1GHz.

关 键 词：锁相环 压控振荡器 电压调节器 电源噪声抑制 

分 类 号：TN752[电子电信—电路与系统]