A New Switched-Current Biquadratic Filter

Wu Jie; Hong Yi; Cai Guochang

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A New Switched-Current Biquadratic Filter

更新时间：2025-12-08

- A New Switched-Current Biquadratic Filter
- Acta Electronica Sinica Issue 5, Pages: 70-75(1993)
- 作者机构：
  
  1. 胡南大学电气工程系
  2. 胡南大学电气工程系长沙 410082
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1993
- 稿件说明：
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[1]吴杰,洪毅,蔡国昌.一种新的开关电流双二次滤波器[J].电子学报,1993(05):70-75.

Wu Jie, Hong Yi, Cai Guochang. A New Switched-Current Biquadratic Filter[J]. Acta Electronica Sinica, 1993, (5): 70-75.
[1]吴杰,洪毅,蔡国昌.一种新的开关电流双二次滤波器[J].电子学报,1993(05):70-75. DOI：

Wu Jie, Hong Yi, Cai Guochang. A New Switched-Current Biquadratic Filter[J]. Acta Electronica Sinica, 1993, (5): 70-75. DOI：

摘要

本文阐述了开关电流（SI）和开关电容（SC）电路的相似性原理

由此提出了一个新的SI双二次滤波器电路

该电路是由文献[5]的三运放SC双二次电路为原型导出的。该电路的一个重要特征是:它在单一积木块上能同时获得低通、带通和高通滤波功能。据此

得到了SI电路的一般双二次实现。

Abstract

The principle of equivalence between switched-capacitor （SC） and switched-current （SI） circuits is described. A new SI biquadratic filter is presented with this equivalence. The SI circuit is derived from the SC biquadratic prototype with three op amps in literature[5]. The important feature of the proposed SI circuit is that it can simultaneously obtain lowpass

bandpass and highpass filter outputs

in a single building block. A general biquadratic realization is also proposed with this SI circuit.

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Related Institution

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