| 基于电流反馈放大器的全集成连续时间双二次滤波器 |
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| 引用本文： | 孟相如,虞厥邦,于志红.基于电流反馈放大器的全集成连续时间双二次滤波器[J].系统工程与电子技术,1997(7). |
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| 作者姓名： | 孟相如 虞厥邦 于志红 |
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| 作者单位： | 电子科技大学光电子系!成都610054(孟相如，虞厥邦)，西安矿业学院通信系!710054(于志红) |
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| 基金项目： | 中国博士后科学基金资助课题 |
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| 摘 要： | 本文提出了基于电流反馈放大器(CFA)的MOSFET-C基本积木块——无损和有损积分器及加权求和器,阐述了采用这些积木块生成全集成连续时间滤波器的方法.以Tow- Thomas(TT)经典有源RC电路为原型,导出了一种新的全集成双二次结构,并采用前馈技术得到了一般双二次全集成实现.这些MOSFET-C滤波电路,结构简单,所有电容均接地,适合于用CMOS工艺集成.
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| 关 键 词： | 电流 反馈放大器 集成滤波器 电路设计 |
Fully Integrated Continuous-Time Biquadratic Filters Based on Current-Feedback Amplifiers |
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| Meng Xiangru and Yu Juebang Dept. of Opto-Electronics Technology,UEST of China,Chengdu Yu Zhihong Dept. of Communication Engineering,Xi' an Mining Institute,Xi' an.Fully Integrated Continuous-Time Biquadratic Filters Based on Current-Feedback Amplifiers[J].System Engineering and Electronics,1997(7). |
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| Authors: | Meng Xiangru and Yu Juebang Dept of Opto-Electronics Technology UEST of China Chengdu Yu Zhihong Dept of Communication Engineering Xi' an Mining Institute Xi' an |
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| Institution: | Meng Xiangru and Yu Juebang Dept. of Opto-Electronics Technology,UEST of China,Chengdu 610054Yu Zhihong Dept. of Communication Engineering,Xi' an Mining Institute,Xi' an 710054 |
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| Abstract: | The MOSFET-C basic building blocks-lossy and lossless integrators and weighted summer based on the current-feedback amplifiers (CFAs) are proposed in this paper. The methods of generating fully integrated continuous-time filters with these building blocks are presented. A new fully integrated biquad structure is derived from the classical Tow-Thomas (TT) active RC prototype. And by using feed-forward technique ,a fully integrated general biquad circuit is also realized. These MOSFET-C filtering circuits are simple, and all the capacitors are grounded. Therefore,they are suitable for integration with CMOS technology. |
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| Keywords: | Current-feedback amplifiers Integrated filters Circuit design |
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