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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
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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.
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Word History and Origins

Origin of phase modulation1

First recorded in 1925–30
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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.

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