If a test-set VCO has d f = 100,000 hertz/volt at a center frequency of 100 MHz,

Question

If a test-set VCO has d f = 100,000 hertz/volt at a center frequency of 100 MHz,
what are the highest and lowest output frequencies if the input is:
m(t) = cos( 2pi 1000 t ) ?

Explanation / Answer

VCO=>Voltage Controlled Oscillator; It changes the frequency of output wrt input voltage;Now as the input signal is m(t)=cos(2pi1000t); the maximum amplitudes a cosine signal(whatever its frequency maybe) can attain are (1,-1);As frequency changes by df=0.1MHz/volt;therefore the max and min output frequencies can be given by; f(max)=100+0.1=100.1MHz; f(min)=100-0.1=99.9MHz;

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