Meeting the Needs of Cellular Dual-Mode(EGPRS/3G) Power Amplifiers with aUnique J-PHEMT Process and NovelControl Architecture
2004
Based upon a unique Junction-PHEMT
device, a novel method of providing high efficiency PA
power control for variable envelope modulation schemes is
demonstrated for EDGE and WCDMA. The method of
control allows for substantially higher efficiency levels
under typical handset operating conditions than those of
conventional linear power amplifiers, on a par with polar
loop solutions, whilst avoiding the necessity for complex
control loops. An immediate benefit of the approach
includes the ability to add EDGE front-end capability to a
GSM handset without incurring a significant size or
component cost impact. Furthermore, the method of control
aids the future prospect of single transmit strip multi-mode
configurations (GSM/EDGE/WCDMA) in order to achieve
considerable size and cost advantages.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
1
Citations
NaN
KQI