Q7: A given FM transmitter is modulated with a single sinusoid. The output for no modulation is 200 watt into a 50 2 resistive load. The peak frequency deviation of the transmitter is carefully increased from zero until the second sideband amplitude in the output is zero. Under these conditions determine: (a) The average power at carrier frequency. (b) The average power in all the remaining sidebands. (c) The average power in the third - order sidebands. Ans: (a) 6.48 w (b) 193.52 w (c) 51.84 w.

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Q7: A given FM transmitter is modulated with a single sinusoid. The output for no
modulation is 200 watt into a 50 2 resistive load. The peak frequency
deviation of the transmitter is carefully increased from zero until the second
sideband amplitude in the output is zero. Under these conditions determine:
(a) The average power at carrier frequency.
(b) The average power in all the remaining sidebands.
(c) The average power in the third – order sidebands.
Ans: (a) 6.48 w (b) 193.52 w (c) 51.84 w.
Transcribed Image Text:Q7: A given FM transmitter is modulated with a single sinusoid. The output for no modulation is 200 watt into a 50 2 resistive load. The peak frequency deviation of the transmitter is carefully increased from zero until the second sideband amplitude in the output is zero. Under these conditions determine: (a) The average power at carrier frequency. (b) The average power in all the remaining sidebands. (c) The average power in the third – order sidebands. Ans: (a) 6.48 w (b) 193.52 w (c) 51.84 w.
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