Title :
A fast Modulator for dynamic supply linear RF power amplifier
Author :
Schlumpf, Nicolas ; Declercq, Michel ; Dehollain, Catherine
Author_Institution :
Electron. Lab., Swiss Fed. Inst. of Technol., Lausanne, Switzerland
fDate :
7/1/2004 12:00:00 AM
Abstract :
A fast modulator for a dynamic supply linear RF amplifier has been integrated in a 0.35-μm CMOS technology. The use of this modulator with an external linear power amplifier (PA) allows to maintain its efficiency at a higher level than it would with the same PA supplied at constant voltage. The modulator is designed to follow rapid envelope variations at high efficiency without compromising the RF PA linearity.
Keywords :
analogue integrated circuits; modulators; power amplifiers; power supply circuits; radiofrequency amplifiers; radiofrequency integrated circuits; 0.35 microns; CMOS technology; constant voltage; dynamic supply power amplifier; efficiency improvement; envelope variations; fast modulator; linear RF power amplifier; CMOS technology; High power amplifiers; Impedance matching; Linearity; Power amplifiers; Power generation; Power supplies; Radio frequency; Radiofrequency amplifiers; Voltage; Dynamic supply power amplifier; efficiency improvement; power amplifier; radio frequency;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2004.829966
