| 单词 | phase modulation |
| 释义 | phase modulationnoun 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 modulationFirst recorded in 1925–30 Words nearby phase modulationphase I block, phase II block, phase-in, phase inverter, phase microscope, phase modulation, phaseout, phase rule, phase shift keying, phases of matter, phase space Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for phase modulationphase modulation nouna 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 Scientific definitions for phase modulationphase 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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