Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 22 (Q.No. 3)
3.
A scheme shown below is to generate a wide band FM modulate signal.
Narrow band FM has carrier frequency = 400 KHz
Deviation ratio = 0.2
Wide band FM has carrier frequency = 100 MHz
Deviation ratio = 6
Local oscillator frequencies can be
Narrow band FM has carrier frequency = 400 KHz
Deviation ratio = 0.2
Wide band FM has carrier frequency = 100 MHz
Deviation ratio = 6
Local oscillator frequencies can be
Discussion:
3 comments Page 1 of 1.
Sonu said:
9 years ago
n = 6/0.2 = 30.
Now,
fout = 30*400 = 12 mhz.
fout = fl+fin.
fl = 100+12 = 112.
fl = 100-12 = 88.
Now,
fout = 30*400 = 12 mhz.
fout = fl+fin.
fl = 100+12 = 112.
fl = 100-12 = 88.
Peter said:
10 years ago
f(up) = 100 Mhz + ((6)(0.4 Mhz)/(0.2)).
f(low) = 100 Mhz - ((6)(0.4 Mhz)/(0.2)).
f(low) = 100 Mhz - ((6)(0.4 Mhz)/(0.2)).
Ankita said:
1 decade ago
Can anyone please explain this with formula?
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