Title :
The Doherty Power Amplifier with Collector Current and Voltage Controls for Handset Applications
Author :
Hien D. Bui;Douglas A. Teeter;David Widay;Sam Mil´shtein
Author_Institution :
RF Micro Devices, Billerica, MA 01821
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.
Keywords :
"Power amplifiers","Voltage control","Telephone sets","Multiaccess communication","Impedance","High power amplifiers","Power generation","Heterojunction bipolar transistors","Linearity","Probability density function"
Conference_Titel :
Bipolar/BiCMOS Circuits and Technology Meeting, 2007. BCTM ´07. IEEE
Print_ISBN :
978-1-4244-1018-7
Electronic_ISBN :
2378-590X
DOI :
10.1109/BIPOL.2007.4351847
