Q factor, Q stability and gain in active filters
Q factor, Q stability and gain in active filters
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有源滤波器的 Q 因子、Q 稳定性和增益
DOI：
10.1049/el:19660080
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发表时间：
1966
影响因子：
1.1
通讯作者：
B. Green
中科院分区：
文献类型：
--
作者：
R. C. Foss;B. Green
本文提出了一个简单的理论，将二阶有源滤波段的最大Q因子与该Q因子的稳定性和所用有源元件的可用增益联系起来。该理论既适用于‘负反馈’或‘劳赫’型滤波器，也适用于‘正反馈’或‘Sallen-key’型滤波器，并隐含地适用于负阻抗转换器(n.i.c.)和基于最小相位反馈网络的整个电路系列。
This letter sets out a simple theory relating the maximum Q factor of a second-order active-filter section to the stability of that Q factor and the available gain in the active elements used. The theory is shown to apply to both the `negative-feedback' or `Rauch'-type filters and `positive-feedback' or `Sallen-Key'-type filters and by implication to negative-impedance convertors (n.i.c.s) and the whole family of circuits based on minimum-phase feedback networks.