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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.
Origin
1925-1930
1925-30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for phase modulation
  • The last section discusses phase modulation techniques that are enabled with continuous emitting light emitting diodes.
British Dictionary definitions for phase modulation

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
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phase modulation in Science
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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10
10
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