Title :
Power amplifier with low average current and compact output matching network
Author_Institution :
Skyworks Solutions Inc., Newbury Park, CA, USA
Abstract :
A power amplifier with a compact output matching network and a high average operating efficiency owing to its control circuits which enable the dynamic control of the quiescent current is presented. The microwave monolithic integrated circuit of the power amplifier was designed and implemented, in order to verify the output matching network and control circuits for the 1.88-GHz band. The power-added efficiency for an average power-usage of the proposed amplifier is almost twice that of conventional power amplifiers (3.74% versus 6.86%) in urban areas.
Keywords :
MMIC power amplifiers; UHF power amplifiers; integrated circuit design; 1.88 GHz; adjacent channel power ratio; bias circuits; control circuits; dynamic control; linear amplifier; microwave monolithic integrated circuit; output matching network; power amplifier; Impedance matching; Linearity; MMICs; Microwave amplifiers; Monolithic integrated circuits; Multiaccess communication; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Thermal management; Adjacent channel power ratio (ACPR); bias circuits; efficiency; linear amplifier; monolithic microwave integrated circuit (MMIC); output matching network; power amplifier;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.858975
