phase modulation
noun Electronics.
radio transmission in which the carrier wave is modulated by changing its phase to transmit the amplitude and pitch of the signal.
Origin of phase modulation
First recorded in 1925–30
Words nearby phase modulation
phase i block,
phase ii block,
phase in,
phase inverter,
phase microscope,
phase modulation,
phase out,
phase rule,
phase shift keying,
phase space,
phase speed
British Dictionary definitions for phase modulation
phase modulation
noun
a type of modulation, used in communication systems, in which the phase of a radio carrier wave is varied by an amount proportional to the instantaneous amplitude of the modulating signal
Scientific definitions for phase modulation
phase modulation
A method of transmitting signals in which the value of the signal is proportional to the phase angle of a carrier wave. It is often combined with amplitude modulation to transmit digital information via modems.