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采用配方原理将双二次函数分解为Z域信号流图(SFG),进而设计开关电容滤波器(SCF)。所设计的SCF对杂散电容是不敏感的。用实验验证了这种方法的正确性。
Using the principle of formulation, the biquadratic function is decomposed into the Z-domain signal flow diagram (SFG), and then the switched capacitor filter (SCF) is designed. The designed SCF is not sensitive to stray capacitance. The correctness of this method is verified by experiments.