quadrature modulation


Also found in: Acronyms.

quadrature modulation

[′kwä·drə·chər ‚mäj·ə′lā·shən]
(communications)
Modulation of two carrier components 90° apart in phase by separate modulating functions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Direct quadrature modulation, as shown in Figure 4, is a common form of direct conversion used in the transmit path.
FM signal generation is an all-analog process; wideband FM signals may be produced by quadrature modulation followed by frequency multiplication
Telephone designers chose to remove quadrature modulation and demodulation functions from the baseband ASICs and place them in the analog BF/IF chips to alleviate mixed-signal isolation issues and allow for lower power CMOS designs.

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