phase modulation

noun

, Electronics.

1. radio transmission in which the carrier wave is modulated by changing its phase to transmit the amplitude and pitch of the signal.

phase modulation

noun

1. 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

phase modulation

1. 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.

Word History and Origins

Origin of phase modulation¹

First recorded in 1925–30

Example Sentences

Pushing them back and forth was called phase modulation: changing the timing. 

From Forbes

They then applied two more rounds of phase modulation — to “undo the damage of the first two rounds”, says Lukens — decompressing the energy again and then combining the separated frequencies back into one.

From Scientific American