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RESEARCH ON NONLINEAR DISTORTION IN AMPLIFIERS 被引量:2

放大器中非线性失真的研究(英文)
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摘要 Transistors are nonlinear devices, which can produce nonlinear distortion in amplifier while amplifying signals. For weak nonlinear distortion, the expressions of total harmonic distortion (THD), the second order intermodulation distortion(IM2 ), the third order intermodulation distortion(IM 3) and intercept point(IP 3) are deduced. With the aid of software Multisim, we simulate transistor common emitter amplifier, transistor common emitter amplifier with resistor in emitter, differential amplifier and differential amplifier with resistor between emitters. The simulational results and theoretical analyses are almost the same. 晶体管是非线性器件 ,在放大信号时会产生非线性失真。针对弱非线性失真 ,推导了总谐波人 ( TH D)、二阶互调失真 ( IM2 )、三阶互调失真 ( IM3)和截点 ( IP3)的表达式 ,借助于 Multisim软件 ,对晶体管共发放大器、发射极带反馈电阻的失发放大器、差分放大器和发射极间带反馈电阻的差分放大器进行了仿真 ,并与理论结果作了比较 ,结果令人满意。
作者 王成华 包骅
出处 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2000年第2期182-187,共6页 南京航空航天大学学报(英文版)
关键词 nonlinear distortion intermodulation distortion intercept point negative feedback differential amplifier 非线性失真 互调失真 截点 负反馈 差分对
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参考文献2

  • 1Zhou Zhenxin.Practice and training of electronics designing automatically[]..1998
  • 2Sansen W.Distortion in elementary transistor circuits[].IEEE Transactions on Circuits and Systems.1999

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