采用单位增益放大器的高Q小电容分散的SC带通滤波器
HIGH Q AND LESS CAPACITOR SPREAD SWITCHED-CAPACITOR FILTER USING UNITY-GAIN AMPLIFIERS
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摘要: 本文提出了一种新的采用单位增益放大器的开关电容(SC)电路。该电路用于高Q带通滤波器实现时,可获得很小的电容分散,较同类的其它SC电路的电容分散有大幅度的减小。Abstract: A new single-amplifier switcbed-cap acitor filter using unity-gain amplifier is presented. When used for the relation of high Q bandpass characteristic, the circuit can obtain much less capacitor spread, and its capacitor spread, compared with other circuits given by literatures, is reduced significantly.
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J. Malawka, M.S. Ghausi, IEE Proc.-G, 127(1980)4,187-190.[2]P.V. Ananda Mohan et al., IEE Proc.-G, 130(1983)1,2-8.[3]吴杰,电子科技杂志,1989年,第1期,第45-48页.[4]吴杰,电路与系统学报,1(1989)2,177-181.[5]M.G. Ghausi, K.R. Laker, Modern Filter Design, Frentice-Hall, Englewood Cliffs, NJ,(1981).[6]吴杰,电子学报,18(1990)4,127-128. -
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