
Electronic Communication Systems 2nd Edition by Roy Blake
Edition 2ISBN: 978-0766826847
Electronic Communication Systems 2nd Edition by Roy Blake
Edition 2ISBN: 978-0766826847 Exercise 33
An FM transmitter has a carrier frequency of 220 MHz. Its modulation index is 3 with a modulating frequency of 5 kHz. The total power output is 100 W into a 50 load.
(a) What is the deviation
(b) Sketch the spectrum of this signal, including all sidebands with more than 1 % of the signal voltage.
(c) What is the bandwidth of this signal, according to the criterion used in part (b)
(d) Use Carson's rule to calculate the bandwidth of this signal, and compare it with the result found in part (c).
(a) What is the deviation
(b) Sketch the spectrum of this signal, including all sidebands with more than 1 % of the signal voltage.
(c) What is the bandwidth of this signal, according to the criterion used in part (b)
(d) Use Carson's rule to calculate the bandwidth of this signal, and compare it with the result found in part (c).
Explanation
(a)
The modulation index is,
.
The mo...
Electronic Communication Systems 2nd Edition by Roy Blake
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