一种多段式VCO频率校准电路及方法  

A Circuit and Method of Calibrating Frequency for Multi-Band VCO

作　　者：谢翔宇 陈昌锐[1] 侯照临[1] 张文锋[1] 金广华[1] XIE Xiangyu;CHEN Changrui;HOU Zhaolin;ZHANG Wenfeng;JIN Guanghua(Southwest China Research Institute of Electronic Equipment,Chengdu 610036,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,成都610036

出　　处：《电子信息对抗技术》2024年第2期72-78,共7页Electronic Information Warfare Technology

摘　　要：设计了一种多段式压控振荡器(Voltage Controlled Oscillator,VCO)频率校准电路,用于多段式VCO在锁相环应用中输出频率的分段情况进行校准,并完成了详细电路设计。基于该电路,提出了一种便于实现的多段式VCO频率校准方法,使用该方法对设计实例中的多段式VCO进行频率校准。频率校准电路和校准方法应用于8~16 GHz超低相位噪声频率合成器的设计需求中,设置合理的校准变量,分别使用传统方法和优化后的校准方法对多段式VCO进行校准,使用优化后的校准方法比传统校准方法的校准结果频率准确度更高。A multi-stage voltage controlled oscillator(VCO)frequency calibration circuit is de-signed.It is used to calibrate the segmented output frequency of multi-section VCO in phase-locked loop applications.The detailed circuit design is completed.Based on this circuit,a con-venient method of multi-section VCO frequency calibration is proposed.This method is used to calibrate the frequency of the multi-stage VCO in the design example.The frequency calibration circuit and calibration method are applied to the design requirements of 8~16 GHz ultra-low phase noise frequency synthesizer.By setting reasonable calibration variables,the traditional method and the optimized calibration method are used to calibrate the multi-section VCO.The frequency accuracy of the calibration results using the optimized calibration method is higher than that of the traditional calibration method.

关 键 词：频率合成器 锁相环 多段式VCO 频率校准电路 频率校准方法 

分 类 号：TN752.5[电子电信—电路与系统]