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一种采用单运算跨阻放大器实现的模拟乘法器

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针对广泛应用于核电子技术领域的模拟乘法器进行了研究,提出了一种采用单运算跨阻放大器实现的模拟乘法器.首先基于运算跨阻放大器的基本结构和输入输出关系,提出了基于单OTRA的基本乘法器电路.然后,为了消除OTRA的有限跨阻增益对乘法器的影响,提出了在直流偏置下叠加小信号的实现方案和基于MOS的乘法器结构,以实现对高频应用的补偿.还讨论了其作为平方器和振幅调制器的应用.最后通过PSPICE仿真验证了提出的理论设计,表明仿真结果与理论设计吻合得很好.
An Analog Multiplier Implemented by a Single Operational Transresistance Amplifier
The analog multiplier,which is widely used in the field of nuclear electronics,is studied,and an analog multiplier,which is implemented using a single operational transresistance amplifier(OTRA),is proposed.Firstly,based on the basic structure of operational transresistance amplifier and the input-output relations,a basic multiplier circuit based on a single OTRA is proposed.Then,in order to eliminate the influence of finite transresistance gain of OTRA on the multiplier,a scheme for implementing a small signal su-perimposed on DC bias and a multiplier structure based on MOS are proposed to compensate for high frequency applications.Its appli-cations as a square and amplitude modulator are also discussed.Finally,the proposed theoretical design is verified through PSPICE sim-ulation,which shows that the simulation results agree well with the theoretical design.

electronic functional componentsoperational transresistance amplifieranalog multipliersmall signal analysistransmission characteristicsfrequency responseapplication example

李玉琴、余金永、葛动元

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广西城市职业大学智能工程学院,广西 崇左 532100

广西科技大学机械与汽车工程学院,广西 柳州 545006

电子功能部件 运算跨阻放大器 模拟乘法器 小信号分析 传输特性 频率响应 应用实例

国家自然科学基金广西壮族自治区高等学校中青年教师科研基础能力提升项目(2020)广西壮族自治区高等学校中青年教师科研基础能力提升项目(2020)崇左市科技计划(2019)

517650072020KY66009桂教科研20201号崇科FA2019010

2024

电子器件
东南大学

电子器件

CSTPCD
影响因子:0.569
ISSN:1005-9490
年,卷(期):2024.47(2)
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