angle modulation
DESCRIPTION
Angle ModulationTRANSCRIPT
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Angle (Exponential) Modulation
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Determine the instantaneous frequency of the signal
The frequency of ф(t) is 5 Hz at t = 0 and increases linearly at a rate of 1 Hz per
second.
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Hence, in PM, the instantaneous frequency ωi varies linearly with the derivative of the modulating signal
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H. W.
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If kf is very small (that is, if |kfa(t)| << 1), then all but the first two terms are negligible
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The Maximum and Minimum carrier frequencies are ωc + kfmp and ωc - kfmp
The deviation of carrier frequency is ± kfmp.
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bandwidth is unchanged so that B = 15 KHz
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