一阶滤波电路
- 一阶滤波电路
- 一阶有源RC滤波电路
- K p = 1 K_p=1 Kp=1
- 反相一阶有源RC滤波电路
- K p = R R 0 K p = − R 0 R K_p=\frac{R}{R_0} ~~ K_p=-\frac{R_0}{R} Kp=R0R Kp=−RR0
压控电压源型滤波电路
- 压控电压源型二阶滤波电路
- H ( s ) = K f Y 1 Y 2 ( Y 1 + Y 2 + Y 3 + Y 4 ) Y 5 + [ Y 1 + ( 1 − K f ) Y 3 + Y 4 ] Y 2 H(s)=\frac{K_fY_1Y_2}{(Y_1+Y_2+Y_3+Y_4)Y_5+[Y_1+(1-K_f)Y_3+Y_4]Y_2} H(s)=(Y1+Y2+Y3+Y4)Y5+[Y1+(1−Kf)Y3+Y4]Y2KfY1Y2
- H ( s ) = K f 1 R 1 1 R 2 ( 1 R 1 + 1 R 2 + s C 1 ) s C 2 + [ 1 R 1 + ( 1 − K f ) s C 2 ] 1 R 2 H(s)=\frac{K_f\frac{1}{R_1}\frac{1}{R_2}}{(\frac{1}{R_1}+\frac{1}{R_2}+sC_1)sC_2+[\frac{1}{R_1}+(1-K_f)sC_2]\frac{1}{R_2}} H(s)=(R11+R21+sC1)sC2+[R11+(1−Kf)sC2]R21KfR11R21
- H ( s ) = K f s C 1 s C 2 ( s C 1 + s C 2 + 1 R 1 ) 1 R 2 + [ s C 1 + ( 1 − K f ) 1 R 2 ] s C 2 H(s)=\frac{K_fsC_1sC_2}{(sC_1+sC_2+\frac{1}{R_1})\frac{1}{R_2}+[sC_1+(1-K_f)\frac{1}{R_2}]sC_2} H(s)=(sC1+sC2+R11)R21+[sC1+(1−Kf)R21]sC2KfsC1sC2
- H ( s ) = K f 1 R 1 s C 2 ( 1 R 1 + s C 2 + 1 R 2 + s C 1 ) 1 R 3 + [ 1 R 1 + ( 1 − K f ) 1 R 3 + s C 1 ] s C 2 H(s)=\frac{K_f\frac{1}{R_1}sC_2}{(\frac{1}{R_1}+sC_2+\frac{1}{R_2}+sC_1)\frac{1}{R_3}+[\frac{1}{R_1}+(1-K_f)\frac{1}{R_3}+sC_1]sC_2} H(s)=(R11+sC2+R21+sC1)R31+[R11+(1−Kf)R31+sC1]sC2KfR11sC2
无限增益多路反馈型电路
- H ( s ) = − Y 1 Y 2 ( Y 1 + Y 2 + Y 3 + Y 4 ) Y 5 + Y 2 Y 3 H(s)=-\frac{Y_1Y_2}{(Y_1+Y_2+Y_3+Y_4)Y_5+Y_2Y_3} H(s)=−(Y1+Y2+Y3+Y4)Y5+Y2Y3Y1Y2
- H ( s ) = 1 R 1 1 R 2 ( 1 R 1 + 1 R 2 + 1 R 3 + s C 1 ) s C 2 + 1 R 2 1 R 3 H(s)=\frac{\frac{1}{R_1}\frac{1}{R_2}}{(\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+sC_1)sC_2+\frac{1}{R_2}\frac{1}{R_3}} H(s)=(R11+R21+R31+sC1)sC2+R21R31R11R21
- H ( s ) = s C 1 s C 2 ( s C 1 + s C 2 + s C 3 + 1 R 1 ) 1 R 2 + s C 2 s C 3 H(s)=\frac{sC_1sC_2}{(sC_1+sC_2+sC_3+\frac{1}{R_1})\frac{1}{R_2}+sC_2sC_3} H(s)=(sC1+sC2+sC3+R11)R21+sC2sC3sC1sC2
- H ( s ) = 1 R 1 s C 1 ( 1 R 1 + s C 1 + s C 2 + 1 R 2 ) 1 R 3 + s C 1 s C 2 H(s)=\frac{\frac{1}{R_1}sC_1}{(\frac{1}{R_1}+sC_1+sC_2+\frac{1}{R_2})\frac{1}{R_3}+sC_1sC_2} H(s)=(R11+sC1+sC2+R21)R31+sC1sC2R11sC1