# Thread: Angle modulation applied math

1. ## Angle modulation applied math

Given an angle modulated signal is:

Xc(t)=10cos[10^8 pi t + 5sin(2 pi 10^3 t)]

Find the maximum phase deviation and the maximum frequency?

2. Originally Posted by orendacl
Given an angle modulated signal is:

Xc(t)=10cos[10^8 pi t + 5sin(2 pi 10^3 t)]

Find the maximum phase deviation and the maximum frequency?
See the other post.

CB

3. However, my text's notation says:

The maximum-frequency deviation in an FM system is given by

And, the modulation index is defined as

Note: Where W denotes the bandwidth of the message signal.
If this was FM and we related it to "bandwidth" that would be easy! BW = infinite.