Title :
A low quiescent current, 40% efficiency three-stage PHEMT power amplifier MMIC for PCS CDMA application
Author :
Wang, Xinwei ; Cao, Jiang ; Liang, Bo ; Khoo, Ee Sze ; Nakamura, Hiroshi ; Singh, Rajinder
Author_Institution :
Oki Techno Centre Pte. Ltd., Singapore
Abstract :
This paper reports a three-stage PHEMT power amplifier (PA) MMIC with low quiescent current and high power added efficiency (PAE) for 1.9 GHz PCS CDMA application. Based on an accurate extracted large signal PHEMT model, the effects of harmonic terminations as well as envelope termination to power, linearity and PAE have been investigated and the results have been applied to the PA design. The three-stage PCS CDMA PA attained over 40% PAE, 0.8-watt output power and 30 dB gain at -45 dBc adjacent channel power rejection (ACPR) under a supply voltage of 3.6 V. The total quiescent current is only 80 mA
Keywords :
HEMT integrated circuits; MMIC power amplifiers; code division multiple access; field effect MMIC; mobile radio; 0.8 W; 1.9 GHz; 3.6 V; 30 dB; 40 percent; 80 mA; PCS CDMA wireless communication; adjacent channel power rejection; envelope termination; gain; harmonic termination; large signal model; linearity; output power; power added efficiency; quiescent current; three-stage PHEMT power amplifier MMIC; Gain; High power amplifiers; Linearity; MMICs; Multiaccess communication; PHEMTs; Personal communication networks; Power generation; Power system harmonics; Signal design;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 1999 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-5604-7
DOI :
10.1109/RFIC.1999.805430
