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首页> 外文期刊>IEICE Transactions on fundamentals of electronics, communications & computer sciences >Realization of Current-Mode KHN-Equivalent Biquad Using Current Follower Transconductance Amplifiers (CFTAs)
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Realization of Current-Mode KHN-Equivalent Biquad Using Current Follower Transconductance Amplifiers (CFTAs)

机译：使用电流跟随器跨导放大器（CFTA）实现电流模式KHN等效双二阶

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摘要

In this letter a new active element the Current Follower Transconductance Amplifier (CFTA) for the realization of the current-mode analog blocks is presented. The element is a combination of the Current Follower (CF) and the Balanced Output Transconductance Amplifier (BOTA). Possible internal structure of the CFTA is presented. The usage of the new active element is shown on the design of the Kerwin-Huelsman-Newcomb (KHN) structure working in the current mode. The frequency filter using the CFTA elements has been designed using the signal-flow graphs. The circuit structure employs three CFTA elements and two grounded passive elements. The filter enables realizing not only the basic functions as the low- (LP), band- (BP) and high-pass (HP) but also the notch and all-pass (AP) filter. The advantage of the structure presented is that the outputs of the filter are at high impedance and hence it is not necessary to use other auxiliary active elements. The properties of the filter proposed were verified by sensitivity and AC analyses in the PSPICE program.
机译：在这封信中，提出了一种新的有源元件，用于实现电流模式模拟模块的电流跟随器跨导放大器（CFTA）。该元件是电流跟随器（CF）和平衡输出跨导放大器（BOTA）的组合。介绍了CFTA可能的内部结构。在当前模式下工作的Kerwin-Huelsman-Newcomb（KHN）结构的设计中显示了新有源元件的用法。已使用信号流图设计了使用CFTA元件的频率滤波器。该电路结构采用了三个CFTA元件和两个接地的无源元件。该滤波器不仅可以实现基本功能，如低（LP），带通（BP）和高通（HP），而且还可以实现陷波和全通（AP）滤波器。呈现的结构的优点在于滤波器的输出处于高阻抗，因此不需要使用其他辅助有源元件。提出的滤波器的性能已通过PSPICE程序中的灵敏度和AC分析得到验证。

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    Norbert HERENCSAR; Jaroslav KOTON; Kamil VRBA;

  • 作者单位

    Department of Telecommunications,Faculty of Electrical Engineering and Communication, Brno University of Technology, Purkynova 118,612 00 Brno, Czech Republic;

    rnDepartment of Telecommunications,Faculty of Electrical Engineering and Communication, Brno University of Technology, Purkynova 118,612 00 Brno, Czech Republic;

    rnDepartment of Telecommunications,Faculty of Electrical Engineering and Communication, Brno University of Technology, Purkynova 118,612 00 Brno, Czech Republic;

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  • 正文语种 eng
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  • 关键词

    CFTA; current-mode circuit; KHN-biquad;

    机译：CFTA;电流模式电路;KHN-biquad;

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