Conference Proceeding

The Doherty Power Amplifier with Collector Current and Voltage Controls for Handset Applications

RF Micro Devices, Billerica
DOI:10.1109/BIPOL.2007.4351847 ISBN: 978-1-4244-1019-4 pp.102 - 105 In proceeding of: Bipolar/BiCMOS Circuits and Technology Meeting, 2007. BCTM '07. IEEE
Source: IEEE Xplore

ABSTRACT A Doherty power amplifier (DPA) with collector current and voltage controls for CDMA and WCDMA |(W)CDMA| application has been investigated and implemented using a standard HBT process. The impact of bias of the peak amplifier on linearity is also discussed. The statistical average current is used to evaluate the current consumption improvement of the DPA with collector current and voltage controls as compared to a single-ended class AB power amplifier.

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Keywords

current consumption improvement
 
Doherty power amplifier
 
peak amplifier
 
single-ended class AB power amplifier
 
standard HBT process
 
statistical average current
 
voltage controls
 
WCDMA |(W)CDMA| application