| 基于可编程跨导运算放大器POTA低通有源滤波器设计 |
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| 引用本文： | 王淑艳, 滕建辅. 基于可编程跨导运算放大器POTA低通有源滤波器设计[J]. 电子与信息学报, 2006, 28(7): 1331-1334. |
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| 作者姓名： | 王淑艳 滕建辅 |
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| 作者单位： | 天津大学电子信息工程学院,天津,300072;中国民用航空学院,天津,300300;天津大学电子信息工程学院,天津,300072 |
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| 摘 要： | 该文给出了基于可编程跨导运算放大器(POTA)的有源滤波器设计方法，能在一定范围内实现跨导值程控调节, 提高调节精度和准确度。并且利用Jacobi法求解相似对角形矩阵，避免解高次方程的难题。所设计的有源滤波电路不易受分布电容的影响，稳定性好、灵敏度低。本文给出了设计实例，显示了该方法的优点。
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| 关 键 词： | 有源滤波器 可编程跨导运算放大器(POTA) 实对称矩阵 Jacobi法 |
| 文章编号： | 1009-5896（2006）07-1331-04 |
| 收稿时间： | 2004-12-02 |
| 修稿时间： | 2005-07-14 |
Lowpass Active Filter Design Based on Programmable Operational Transconductance Amplifiers(POTA) |
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| Wang Shu-yan, Teng Jian-fu. Lowpass Active Filter Design Based on Programmable Operational Transconductance Amplifiers(POTA)[J]. Journal of Electronics & Information Technology, 2006, 28(7): 1331-1334. |
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| Authors: | Wang Shu-yan Teng Jian-fu |
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| Affiliation: | School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; Civil Aviation University, Tianjin 300300, China |
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| Abstract: | In this paper, a method of active filter design based on Programmable Operational Transconductance Amplifiers(POTA) is given. The transconductance is adjusted by software in order to improve accuracy. The design procedure is based on Jacobi method and similar diagonal matrix. The difficulties of finding the roots of high order polynomial can be avoided by using Jacobi method. Active filter circuit is composed of POTA and ground capacitors. It has the characteristics of high stability and low sensitivities. A design example is given and the simulated results show that the given method is suitable for continuous time active filter design. |
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| Keywords: | Active filter Programmable Operational Transconductance Amplifiers(POTA) Symmetry matrix Jacobi-method |
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