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//Example9.2 // to find VCO output frequency
clc;
clear;
close;
fc = 400 ; // KHz a free running frequency
f = 10 ; // KHz low pass filter bandwidth
fi = 500 ; // KHz input frequency
// In PLL a phase detector produces the sum and difference frequencies are defined as
sum = fi+fc ;
disp('The sum frequency produce by phase detector is = '+string(sum)+' KHz ');
difference = fi-fc ;
disp('The difference frequency produce by phase detector is = '+string(difference)+' KHz ');
disp('The phase detector frequencies are outside of the low pass filter');
disp('The VCO will be in its free running frequency ');
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