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

fYear

1999

fDate

1999

Firstpage

121

Lastpage

124

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 1999 IEEE

Conference_Location

Anaheim, CA

ISSN

1097-2633

Print_ISBN

0-7803-5604-7

Type

conf

DOI

10.1109/RFIC.1999.805430

Filename

805430