四类LO信号对CMOS Gilbert混频器增益影响分析  

The effect of four different kinds of LO on gain in CMOS Gilbert mixer

作　　者：唐守龙[1] 罗岚[1] 陆生礼[1] 时龙兴[1] 

机构地区：[1]东南大学国家专用集成电路系统工程技术研究中心,江苏南京210096

出　　处：《电路与系统学报》2005年第2期66-70,共5页Journal of Circuits and Systems

摘　　要：本文深入研究了CMOS Gilbert混频器在四类本振信号(Local Oscillator,LO)作用下的开关模型,提出了相应情况下的混频器电压转换增益修正公式。基于0.25μm标准CMOS工艺的Gilbert混频器仿真结果表明,本文预测的电压增益理论值与仿真结果相差最大为0.08dB,对CMOS混频器的优化设计具有指导意义。The switch behavior of CMOS Gilbert mixer is investigated with four different kinds of local oscillator (LO) signals. Four correctional equations of mixer voltage conversion gain are derived. The prediction of our analysis is compared with simulation results based on 0.25μm CMOS technology, which maxim error is less than 0.08dB, it can be used to direct the design of CMOS mixer.

关 键 词：CMOS射频集成电路 混频器 电压转换增益 

分 类 号：TN773[电子电信—电路与系统]