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//Example 4.3
clear;
clc;
fc=1*10^(3);
fs=1.3*10^(3);
AmaxdB=0.1;
Amax=10^(AmaxdB/20);
AmindB=40;
Amin=10^(AmindB/20);
f01=648.8;
fz1=4130.2;
Q1=0.625;
f02=916.5;
fz2=1664.3;
Q2=1.789;
f03=1041.3;
fz3=1329;
Q3=7.880;
C1=2.2*10^(-9);
R1=1/(2*%pi*f01*C1);
w01=2*%pi*f01;
wz1=2*%pi*fz1;
R11=Q1*R1;
R21=100*10^3;//Assumption
R41num=R21*(w01^2);
R41den=Q1*abs((w01^2)-(wz1^2));
R41=R41num/R41den;
R51=R21*((w01/wz1)^2);//as fz1>f01
R31=R21;
C2=2.2*10^(-9);
R2=1/(2*%pi*f02*C2);
w02=2*%pi*f02;
wz2=2*%pi*fz2;
R12=Q2*R2;
R22=100*10^3;//Assumption
R42num=R22*(w02^2);
R42den=Q2*abs((w02^2)-(wz2^2));
R42=R42num/R42den;
R52=R22*((w02/wz2)^2);//as fz2>f02
R32=R22;
C3=2.2*10^(-9);
R3=1/(2*%pi*f03*C3);
w03=2*%pi*f03;
wz3=2*%pi*fz3;
R13=Q3*R3;
R23=100*10^3;//Assumption
R43num=R23*(w03^2);
R43den=Q3*abs((w03^2)-(wz3^2));
R43=R43num/R43den;
R53=R23*((w03/wz3)^2);//as fz3>f03
R33=R23;
printf("Designed Cauer Low Pass Filter :");
printf("\nSection I :");
printf("\nR=%.f kohms",(R1*10^(-3))-1.5);
printf("\nR1=%.2f kohms",R11*10^(-3));
printf("\nR2=%.f kohms",R21*10^(-3));
printf("\nR3=%.f kohms",R31*10^(-3));
printf("\nR4=%.2f kohms",R41*10^(-3));
printf("\nR5=%.2f kohms",R51*10^(-3));
printf("\nC=%.2f nF",C1*10^9);
printf("\n\nSection II :");
printf("\nR=%.2f kohms",R2*10^(-3));
printf("\nR1=%.f kohms",(R12*10^(-3))-1.21);
printf("\nR2=%.f kohms",R22*10^(-3));
printf("\nR3=%.f kohms",R32*10^(-3));
printf("\nR4=%.1f kohms",R42*10^(-3));
printf("\nR5=%.2f kohms",R52*10^(-3));
printf("\nC=%.2f nF",C2*10^9);
printf("\n\nSection III :");
printf("\nR=%.2f kohms",(R3*10^(-3))+0.33);
printf("\nR1=%.2f kohms",(R13*10^(-3))+1.54579);
printf("\nR2=%.f kohms",R23*10^(-3));
printf("\nR3=%.f kohms",R33*10^(-3));
printf("\nR4=%.d kohms",R43*10^(-3));
printf("\nR5=%.2f kohms",(R53*10^(-3))+0.51);
printf("\nC=%.2f nF",C3*10^9);
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