CAJ | 학술논문

基于跨导放大器线性度理论和数学分析，提出了一种提高线性度的方法．该方法通过数学理论分析和模拟实验证实，双端输入双端输出结构的跨导器线性度优于单端输入单端输出的跨导器，且两个输入端信号满足一端是另一端幅度的4/3倍加1时，跨导器线性失真度最小．根据该优化方法设计了一种新型跨导器，仿真实验表明，跨导器无杂散动态范围为60.25dB ，噪声平台达到-100dB ．
기우과도방대기선성도이론화수학분석，제출료일충제고선성도적방법．해방법통과수학이론분석화모의실험증실，쌍단수입쌍단수출결구적과도기선성도우우단단수입단단수출적과도기，차량개수입단신호만족일단시령일단폭도적4/3배가1시，과도기선성실진도최소．근거해우화방법설계료일충신형과도기，방진실험표명，과도기무잡산동태범위위60.25dB ，조성평태체도-100dB ．
Based on the linearity theory of transconductance amplifier and mathematical analysis ,a method of improving lin-earity is presented .In this method ,the mathematical analysis and simulation experiments proved that linearity of double ended input transconductor is better than single ended input transconductor .When one end input signal is 4/3 of the other end input signal and plus 1 ,the transconductor linear distortion can be minimized .A new transconductor is proposed according to the optimization mea-sure .The simulation results show that the spurious free dynamic range of the transconductor is 60 .25dB ,and noise-floor reach up to-100dB .