polar modulation


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polar modulation

[′pō·lər ‚mäj·ə′lā·shən]
(communications)
Amplitude modulation in which the positive excursions of the carrier are modulated by one signal and the negative excursions by another.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Polar modulation utilizes envelope A and phase O components to represent the base-band symbols instead of the conventional I/Q format.
venture business credited for the development of polar modulation techniques for use in wireless transmitter applications.
It said the closed-loop polar modulation transmitter design used, helps reduce complexity of design and offers an improvement on the open-loop polar designs.
Combined with size reduction and an increase in overall performance, the RF3178 is designed to support polar modulation in combination with the POLARIS 2 Radio Module solution.
This generation includes the quad-band RF3158 (GSM/GPRS/EDGE), optimized for linear EDGE using either direct I & Q modulators or small signal polar modulation, and the quad-band RF3166 (GSM/GPRS), optimized for GSM/GPRS Class 12.
This PA represents greater than 30 percent size reduction and is optimized for linear EDGE using either direct I & Q modulators or small-signal polar modulation. The RF3158 incorporates battery voltage tracking circuitry, which automatically measures battery voltage and adjusts ramp voltage, thereby preventing the power control loop from reaching saturation during low voltage battery conditions.