Electronics and Communication Engineering - Communication Systems - Discussion
Discussion Forum : Communication Systems - Section 14 (Q.No. 16)
16.
An FM transmitter has maximum frequency deviation of 75 kHz and reproduces audio signals up to 15 kHz. Minimum channel width required is __________ kHz.
Discussion:
7 comments Page 1 of 1.
Shevoto rhakho said:
5 years ago
Anyone solve this question, please.
Gautam said:
7 years ago
Yes, 180 is correct.
Kaosar said:
9 years ago
Yeah, 180 correct.
Ajeet said:
9 years ago
BW = 2(dev. + fm).
Sawan said:
9 years ago
Yeah, 180 is the correct answer.
OujaMori said:
9 years ago
If your formula is correct the answer is 180. The modulation index is 5 not 3.
Priyanka said:
9 years ago
Modulation index is ratio of fd to fm.
fd = 75khz, fm = 15khz.
So, modulation index is 3.
Minimum channel required is bandwidth = 2(modulation index + 1) fm.
= 2(3 + 1) 15khz.
= 120khz.
fd = 75khz, fm = 15khz.
So, modulation index is 3.
Minimum channel required is bandwidth = 2(modulation index + 1) fm.
= 2(3 + 1) 15khz.
= 120khz.
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