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+// Example 5.32:Avm,Fh,Fl

+clc;

+clear;

+close;

+n=3

+Cc=0.005;//in micro farad

+C=100;//in pico farad

+rd=7.7;//

+Rs=1;//series resistance in killo ohmstance in killo ohms

+gm= 25;//transconductane in milli ampere per volt

+Rd=10;//resistance in killo ohms

+x=(rd*Rd)/(rd+Rd);//

+Av2m= -gm*x;//mid frequency gain of second stage

+Rg=1;//gate resisatnce in mega ohms

+y= (x*Rg*10^3)/(x+Rg*10^3);//

+Avm= -gm*y;//mid frequency gain of first stage

+Av= Avm*Avm*Avm;//total gain

+Avdb=20*(log10(-Av));//

+Req=y;//

+Csh=100;//capacitance in pico farad

+fh=(1/(2*%pi*Req*10^3*Csh*10^-9));//upper cut off frequency in killo hertz

+Ro1=y;//

+fl=(1/(2*%pi*Cc*10^-6*(Ro1*10^3+Rg*10^6)));//lower cut off frequency in hertz

+x=sqrt(2^(1/n)-1);//

+fhn=x*fh;//lower cut off frequency in hertz

+fln=fl/x;//upper cut off frequency in hertz

+disp(Avdb,"total voltage gain in db")

+disp(fl,"lower cut off frequency in hertz")

+disp(fh,"upper cut off frequency in killo hertz")

+disp(fln,"3 db lower cut off frequency in hertz")

+disp(fhn,"3 db upper cut off frequency in killo hertz")