Novel multimode J-pHEMT front-end architecture with power-control scheme for maximum efficiency
- 13 June 2005
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 53 (6) , 2251-2258
- https://doi.org/10.1109/tmtt.2005.848747
Abstract
Based upon a unique junction pseudomorphic high electron-mobility transistor (J-pHEMT) device, a novel method of providing high-efficiency power amplifier (PA) power control for variable envelope modulation schemes is demonstrated for enhanced data rates for global system for mobile communications evolution and wide-band code division multiple access. This new technique, based upon the use of a linear PA, was extended to provide a simple, but highly effective method of PA efficiency enhancement based upon dynamic adaptive bias control. Together, the architecture allows for substantially higher efficiency levels compared with conventional linear solutions over the entire range of handset operating conditions, while avoiding the necessity for complex control loops and linearization schemes. Furthermore, it is shown that the characteristics of the J-pHEMT, when used with this architecture, can be exploited to facilitate an efficient and completely novel single-chip PA plus antenna switch to substantially reduce the RF complexity of a cellular handset.Keywords
This publication has 17 references indexed in Scilit:
- A High-Efficiency Linear RF Power Amplifier With a Power-Tracking Dynamically Adaptive Buck-Boost SupplyIEEE Transactions on Microwave Theory and Techniques, 2004
- Integrated DC-DC converter design for improved WCDMA power amplifier efficiency in SiGe BiCMOS technologyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Monolithic supply modulated RF power amplifier and DC-DC power converter ICPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Active cancellation of switching noise for DC-DC converter-driven RF power amplifiersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- System-level requirements of DC-DC converters for dynamic power supplies of power amplifiersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Low standby leakage current power amplifier module made with junction PHEMT technologyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Efficiency and linearity improvement in power amplifiers for wireless communicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Microwave power amplifiers with digitally-controlled power supply voltage for high efficiency and high linearityPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- High efficiency CDMA RF power amplifier using dynamic envelope tracking techniquePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- High-efficiency power amplifier using dynamic power-supply voltage for CDMA applicationsIEEE Transactions on Microwave Theory and Techniques, 1999