| 任意滤波特性的电流模式CC实现 |
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| 引用本文： | 何怡刚.任意滤波特性的电流模式CC实现[J].湖南大学学报(自然科学版),1999,26(1):48-52,59. |
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| 作者姓名： | 何怡刚 |
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| 作者单位： | 湖南大学电气工程系,中国,长沙,410082 |
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| 基金项目： | 国家自然科学青年基金,湖南省自然科学基金 |
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| 摘 要： | 提出了一个基于积分器的电流模式通用ＣＣ滤波器结构。该结构是在典型ＦＬＦ结构的基础上增加输入分布ＣＣ网络生成的。适当设置输出分布ＣＣ网络无源元件参数，能实现任意近似滤波特征，本文给出了系统的设计公式，做为例子，文中设计了一个三阶椭圆低通滤波器，分析了ＣＣ器件传输误差对滤波科特性的影响，提出了减少这种影响的一种措施－－预畸设计法，模拟仿真结果与理论分析吻合。
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| 关 键 词： | 有源滤波器 第二代电流传送器(CCⅡ) /- 电流模式电路 |
Current-Mode CC Realization of Arbitrary Filter Characteristics |
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| He Yigang.Current-Mode CC Realization of Arbitrary Filter Characteristics[J].Journal of Hunan University(Naturnal Science),1999,26(1):48-52,59. |
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| Authors: | He Yigang |
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| Abstract: | A universal current mode integrator based CC(Current Conveyor)filter structure is presented.The filter architecture proposed is constructed using a canonical FLF(Follow the Leader Feedback)configuration with an input distribution CC network.They are comprehensive in function:by setting any particular input distributing passive element parameters,we can realise arbitrary approximation characteristics.General explicit design formulas are derived.It is also straightforward to obtain universal filter architecture and the corresponding design formulae of any particular order.As an example,a third order elliptic lowpass filter is designed.The influence of the voltage and current tracking errors of current conveyor(CC) on filter performance is analyzed.Meanwhile,a predistortion design to eliminated this effect is proposed.Simulated results are obtained to verify the theoretical analysis. |
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