Title :
Low-power CMOS polar modulator for multiband and multimode RF transmitter
Author :
Paek, J.-S. ; Lee, H.-Y. ; Hong, Seong-Kwan
Author_Institution :
Sch. of Eng., Korea Adv. Institude of Sci. & Technol., Daejeon, South Korea
fDate :
7/1/2010 12:00:00 AM
Abstract :
A low-power polar modulator for a multiband and multimode RF transmitter is presented. The multimode capability of the modulator was tested with WCDMA and GSM/EDGE system requirements. The polar modulator consists of a saturated amplifier with a modulating current source which allows low power consumption. The multiband operation is obtained by tuning an LC output matching network.
Keywords :
CMOS integrated circuits; low-power electronics; modulators; radio transmitters; GSM/EDGE system; LC output matching network; WCDMA; low power CMOS polar modulator; low power consumption; modulating current source; multiband RF transmitter; multiband operation; multimode RF transmitter; saturated amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.1001
