| 一种适合带通/宽带滤波器的新型电流差放大器 |
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| 引用本文： | 刘习春,谢可夫. 一种适合带通/宽带滤波器的新型电流差放大器[J]. 微电子学, 2002, 32(3): 215-218 |
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| 作者姓名： | 刘习春 谢可夫 |
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| 作者单位： | 湖南师范大学,图像识别与计算机视觉研究所,湖南,长沙,410081 |
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| 摘 要： | 介绍了一种具有双端电流电流输出的电流差大器的新型结构，应用这种电流差放大器，在实现处理电流的一附规范全通滤波器的基础上，导出了新型电流模式高Q值二阶带通滤波器和宽带滤波器。其中，高Q值带通滤波器不受元件匹配条件的约束，调节Q值时不影响中心频率f0。上述电路的PSPICE仿真结果与理论分析相互吻合。
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| 关 键 词： | 电流差放大器 带通滤波器 宽带滤波器 |
| 文章编号： | 1004-3365(2002)03-0215-04 |
| 修稿时间： | 2001-06-18 |
A New Current Differencing Amplifier Suitable for Bandpass and Wideband Filters |
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| LIU Xi chun,XIE Ke fu. A New Current Differencing Amplifier Suitable for Bandpass and Wideband Filters[J]. Microelectronics, 2002, 32(3): 215-218 |
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| Authors: | LIU Xi chun XIE Ke fu |
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| Abstract: | A new configuration of current differencing amplifier with double output terminals is proposed Using this current differencing amplifier, a new type of current mode high Q second order bandpass filter and a wide bandpass filter based on first order canonical current processing all pass filter are derived The high Q bandpass filter allows to adjust the Q factor without changing its center frequency f o , and no component matching constrains are required Results from PSPICE simulation of the circuits are in agreement with the theoretical analysis |
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| Keywords: | Current differencing amplifier Current mode circuit All pass filter Band pass filter Wide band filter |
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