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clc//
//
//
//Variable declaration
A=10^-6; //area(m^2)
e=1.6*10^-19; //charge(coulomb)
Nd=10^21; //electron concentration(m^-3)
epsilonr=11.7;
epsilon0=8.85*10^-12;
V=10; //potential(V)
RL=50; //resistance(ohm)
//Calculation
Cj=(A/2)*sqrt(2*e*epsilonr*epsilon0*Nd/V); //diode capacitance(F)
delta_fel=1/(2*%pi*RL*Cj); //frequency bandwidth(Hz)
//Result
printf("\n diode capacitance is %0.1f pF",Cj*10^12)
printf("\n frequency bandwidth is %0.0f MHz",delta_fel*10^-6)
printf("\n answer varies due to rounding off errors")
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