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//a
//transistor parameters
R2 = 0.625;
hie = 1.67;
Rb = 4.16;
Rl = 2.4;
Roe = 150;
Cc = 25 * 10^-6;
rBB = 0.29;
rBE = 1.375;
Cd = 6900 * 10^-12;
Ct = 40 * 10^-12;
gm = 0.032;
Req = (Rl*Roe)/(Rl + Roe);
hfe = 44;
a = 1 + (R2/Req);
b = 1 + (hie/Rb);
Aim = -hfe/(a*b); // mid band frequency gain
disp("a")
disp(Aim,"The mid band frequency gain of the first stage of the circuit is: ")
//b
Tl = 2*%pi*(Req + R2)*Cc*(10^3);
Fl = 1/Tl;
Rp = (Req*R2)/(Req + R2);
C = Cd + Ct*(1 + gm*Rp*10^3);
d = Rb + hie ;
e = rBE * (Rb + rBB)* 10^3 * C ;
Fh = d/(2*%pi*e);
BW = Fh - Fl;
disp("b")
disp(BW, "The bandwidth of the first stage amplifier in Hz is :")
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