A Low Power Wide-band Voltage Controlled Oscillator for Global Navigation Satellite System Receiver
Yin Xi-zhen① Xiao Shi-mao① Ma Cheng-yan①② Ye Tian-chun①
①(Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China) ②(Hangzhou Zhongke Microelectronics Co., Ltd, Hangzhou 310053, China)
Abstract：This paper presents a new low power small area wide-band Voltage Controlled Oscillator (VCO) for Global Navigation Satellite System (GNSS) receiver. The VCO is separated in two discrete working regions from the characteristic of all-band GNSS signals. The power and phase noise can be optimized individually, the complexity of VCO is reduced and the area is saved. A technique of tuning curve linearization is used; The conventional VCO problem of having narrow effective tuning range of control voltage (VCTRL) is solved. A linear tuning curve in whole variation of VCTRL is kept, the Amplitude Modulation to Frequency Modulation (AM-FM) conversion is decreased, and the phase noise is allayed. The measured results show that the tuning range of frequency is 49.5%, the gain of VCO (KVCO) is constant when VCTRL varies from 0.1 to 0.9 V. Measured phase noise is lower than -120 dBc at 1 MHz offset, the entire VCO consumes 2 mA current, occupies 0.24 mm2 area. The proposed VCO is implemented in 0.13 μm 1P6M process, and it is successfully applied to all-band GNSS receiver.
尹喜珍, 肖时茂, 马成炎, 叶甜春. 一种应用于全球导航卫星系统接收机的低功耗宽带压控振荡器[J]. 电子与信息学报, 2012, 34(4): 1002-1006.
Yin Xi-Zhen, Xiao Shi-Mao, Ma Cheng-Yan, Ye Tian-Chun. A Low Power Wide-band Voltage Controlled Oscillator for Global Navigation Satellite System Receiver. , 2012, 34(4): 1002-1006.
2012, Vol. 34 
