ENEL 471 Study Notes

Seite 1

Chapter 4: PM&FM Modulation

LEARN IDENTITIES:

sin(a)*cos(b) =(1/2)( sin(a+b) + sin(a-b))

sin(a)*sin(b) =(1/2)( cos(a-b) + cos(a+b))

cos(a+b) = cos(a)cos(b) - sin(a)sin(b)

cos(a)^2 = (1/2)( 1 + cos(2a) )

Chapter 4: FM/PM:

Δf = B*Fm Δf= Am*Kf

BT = 2Δf *2fm

BT = 2*Nmax*fm