engineering recuitment GATE ECE 2023-24 Test Series Communication Systems Angle Modulation Phase Modulation
A message signal m(t) = Am sin (2πfmt) is used to modulate the phase of a carrier Ac cos (2πfct) to get the modulated signal y(t) = Ac cos (2πfct + m(t)). The bandwidth of y(t)
1
depends on Am but not on fm
2
depends on fm but not on Am
3
depends on both Am and fm
4
does not depends on Am or fm