phase modulation

American  

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.

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phase modulation British  

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

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phase modulation Scientific  

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.

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Etymology

Origin of phase modulation

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