MC1648两种改进型VCO的压控特性和频率稳定性研究  

Voltage-Controlled Characteristics and Frequency Stabilities Research on Two Kinds of Improved Negative-Resistance Integrated VCO for MC1648

作　　者：林秩盛[1] 林宇[1] 陈振晖[1] 

机构地区：[1]中山大学电子与通信工程系,广东广州510275

出　　处：《电讯技术》2001年第2期37-41,共5页Telecommunication Engineering

基　　金：中山大学二一一工程重点项目 !<中山大学信息宽带网络有限公司>研究内容

摘　　要：本文对 2种改进型VCO的压控特性和频率稳定性进行分析 ,并给出实际测量结果。结果表明 ,两VCO在变容管允许承受的整个反偏压范围内 ,压控特性具有较好的线性 ,频稳度达 1 0 - 4 ～1 0 - 5量级 ,大大优于一般频率固定的LC振荡器 ,所以适合于性能要求较高的场合使用。In this paper, the voltage-controlled characteristics and frequency stabilities of two kinds of improved circuits are analyzed, and the practical measuring results are also given. The results show that the voltage-controlled characteristics have a good linearity, the frequency stabilities come up to 10 -4 ～10 -5 ,much better than those of the constant frequency LC oscillators. So they will be fitted for the application that requires the better performances.

关 键 词：VCO 压控特性 频率稳定度 振荡器 

分 类 号：TN752[电子电信—电路与系统]