DC/DC converter controlled power amplifier module for WCDMA applications

Author

Lee, Jongsoo ; Potts, Jeff ; Spears, Eddie

Author_Institution

RF Micro Devices, Chandler, AZ

fYear

2006

fDate

11-13 June 2006

Abstract

A single package power amplifier module with a GaAs PA and a Si DC/DC converter for WCDMA application is presented. Integration of a linear power amplifier and a power management chip is implemented to improve the efficiency of the PA at low output power by changing the supply voltage. Overall PA performance at 27.5dBm is identical to the discrete WCDMA power amplifier and the efficiency at 16dBm output power is improved from 8 ~ 9% at 3.4V supply voltage to 16.8% with the DC/DC converter. Receive band noise power is minimized to -135dBm/Hz at 190MHz offset by noise reduction techniques in the module

Keywords

DC-DC power convertors; III-V semiconductors; code division multiple access; elemental semiconductors; gallium arsenide; power amplifiers; silicon; 3.4 V; DC/DC converter; GaAs; Si; WCDMA applications; linear power amplifier; noise reduction; power added efficiency; power amplifier module; power management chip; DC-DC power converters; Energy management; Multiaccess communication; Noise reduction; Packaging; Power amplifiers; Power generation; Radio frequency; Radiofrequency amplifiers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-9572-7

Type

conf

DOI

10.1109/RFIC.2006.1651091

Filename

1651091