低噪声集成压控振荡器噪声性能分析  

Analysis of an Integrated Realizable Low-Phase Noise VCO

作　　者：陶蕤[1] 王志功[1] 顾峥[1] 

机构地区：[1]东南大学,南京210094

出　　处：《电子工程师》2000年第1期37-40,共4页Electronic Engineer

摘　　要：提出了一种低相位噪声时基核心电路的压控振荡器的设计方法。通过对采用由普通差分放大器单元和容性耦合差分放大器单元构成的环行振荡器的噪声分析得出，由容性耦合差分放大器单元构成的环行振荡器，因其带通特性和负阻特性而具有较好的抗噪声能力，可用于对频率稳定度有较高要求的ＶＣＯ等电路中。A design method of VCO with low phase noise time based center circuit is proposed. Through the noise analysis between circular oscillators composed of general differential amplifer element and of capacitive coupling differential amplifier element, it is found that the later, due to its band-pass and dynatron characteristics, provides a better anti-noise performance, which can be used in VCO circuits having a high requirement on frequency stability.

关 键 词：压控振荡器 差分放大器 噪声 

分 类 号：TN752[电子电信—电路与系统]