A Controlled Gain, Frequency and Q Biquad with Single Transconductance Elements

Xu De-bing

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A Controlled Gain, Frequency and Q Biquad with Single Transconductance Elements

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- A Controlled Gain, Frequency and Q Biquad with Single Transconductance Elements
- Acta Electronica Sinica Issue 6, Pages: 27-33(1988)
- 作者机构：
  
  1. 北京航空学院
  2. 明尼苏达大学电机系美
  3. 北京航空学院明尼苏达大学电机系美
- 作者简介：
- 基金信息：
- DOI：
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- Published：1988
- 稿件说明：
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[1]徐德炳,R.绍曼.频率和Q值可控的单跨导二阶通用滤波电路[J].电子学报,1988(06):27-33.

Xu De-bing. A Controlled Gain, Frequency and Q Biquad with Single Transconductance Elements[J]. Acta Electronica Sinica, 1988, (6): 27-33.
[1]徐德炳,R.绍曼.频率和Q值可控的单跨导二阶通用滤波电路[J].电子学报,1988(06):27-33. DOI：

Xu De-bing. A Controlled Gain, Frequency and Q Biquad with Single Transconductance Elements[J]. Acta Electronica Sinica, 1988, (6): 27-33. DOI：

摘要

本文提出了一种利用单跨导元件和电容器构成的通用二阶滤波电路。列出了各种二阶滤波器的电路结构及其传递函数、零点、极点和Q值的计算公式

比较了各种电路的优缺点。由于单跨导元件的跨导值可由外加电压控制

因此滤波器的增益、频率和Q值也受控制。作为一个例子

设计了一个由四节二次型电路级联而组成的八阶带通滤波器

用SPICE程序进行了模拟计算

其结果达到了设计要求

证明电路可行。

Abstract

A canonical biquad structure which consists of single transconductance elements and capacitors is described. This biquad circuit topology is analyzed and various circuits topology and their transfer function

pole frequency

zero frequency and quility factor are given. The gain

frequency and Q of these filters can be controlled

because the value of the transconductance element is controlled with a voltage. As an example

an 8 order 4 section biquad cascaded bandpass filter is designed and simulated with SPICE programm. The result meets the demand for the design.

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