一个1.5V低相位噪声的高频率LC压控振荡器的设计  

Design of 1.5 V LC Voltage-Controlled High Frequency Oscillator of Low Phase Noise

作　　者：邬蓉[1] 衣晓峰[1] 唐长文[1] 苏彦锋[1] 洪志良[1] 

机构地区：[1]复旦大学专用集成电路和系统国家重点实验室,上海200433

出　　处：《复旦学报（自然科学版）》2005年第1期166-172,共7页Journal of Fudan University：Natural Science

基　　金：复旦大学研究生创新基金资助项目(CQH1203003)

摘　　要：介绍了一种适用于DCS 1800系统的压控振荡器的设计,中心频率为3.6GHz.分析并比较了三种降低相位噪声的方法并进行了仿真验证,然后阐述了3.6GHz压控振荡器器件尺寸的优化分析.采用电感电容滤波技术降低相位噪声,在偏离中心频率600kHz处,仿真得到相位噪声为-117dBc/Hz,调谐范围达到26.7%.VCO电路在1.5V电压下工作,静态电流为6mA.It is described the design of a voltage-controlled oscillator for the DCS-1800 system. The center frequency of the oscillator is 3.6 GHz. The analysis and comparison of three methods to reduce phase noise are presented theoretically, and the simulation results are shown. Then the optimization analysis of the parameters of the device is presented. LC filtering technology is used to reduce the phase noise. The phase noise at 600 kHz away from the center frequency is -117 dBc/Hz, the tuning range is up to 26.7%. The static current is 6 mA at 1.5 V.

关 键 词：半导体技术 压控振荡器 相位噪声 电感电容滤波技术 频率 

分 类 号：TN752[电子电信—电路与系统]