| 补偿运算放大器带宽增益影响滤波器性能的新方法 |
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| 引用本文： | 邱镕胜,L.P.许尔斯曼. 补偿运算放大器带宽增益影响滤波器性能的新方法[J]. 兰州理工大学学报, 1987, 0(1) |
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| 作者姓名： | 邱镕胜 L.P.许尔斯曼 |
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| 作者单位： | 美国亚利桑那大学 |
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| 摘 要： | Sallen-Key滤波器在高频下工作时,由于运算放大器的带宽增益的下降,会严重地恶化滤波器的性能。本文提出了一种补偿带宽增益值影响滤波器性能的新方法,此方法仅需在原滤波器电路中增加一个电阻元件,便能使滤波器的性能与理想情况下一致。本文论述了此法的原理,分析了经补偿后整个滤波器的性能及其灵敏度。
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| 关 键 词： | 滤波器 补偿 带宽增益 灵敏度 主极点 归一化 谐振频率 品质因数 优化 |
A New Method of Compensating for the Effects of Operational Amplifier Gain Bandwidth in the Sallen and Key Filter |
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| Qiu Rongsheng,L.P.Huelsman. A New Method of Compensating for the Effects of Operational Amplifier Gain Bandwidth in the Sallen and Key Filter[J]. Journal of Lanzhou University of Technology, 1987, 0(1) |
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| Authors: | Qiu Rongsheng L.P.Huelsman |
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| Abstract: | In high frequency applications of the Sallen and Key filter, the gain bandwidth of the operational amplifier can seriously degrade the performance of the filter. A new method of compensation for the effects of gain bandwidth is presented in this paper. The method consists of modifying the basic filter configuration by adding another resistive element to provide the necessary compensation. This paper describes such method and discusses performance and sensitivity of the filter. |
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| Keywords: | filter compensate gain bandwidth sensitivity dominantpole normalization resonant freqency quality factor optimization. |
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