logo
CanyamAI summaries for academic research
language
MobileMobile
  • Phone FeatureWeChat Mini Program
EnglishEnglish
noticeNotice
BlogBlog
delete
arrow
Return

A Class-E GSM-handset PA with increased efficiency

delete2003-10-01
delete7
PRE
AI
R
Roland Koller
A
Andreas Stelzer
K
K.-H. Abt
A
Andreas Springer
R
Robert Weigel
DOI：10.1109/EUMA.2003.340939delete
deleteOriginal
deleteOriginal request for help
deleteShare
deleteSave
Abstract

Abstract

En 中文
Today's GSM handset PA implementations give lots of room for efficiency improvement due to the fact that especially in the power-backoff region most of the consumed input power provided by the handset battery is dissipated as heat. This reduces the maximum talking time significantly and makes utilization of smaller batteries impossible. Switching amplifiers provide by default the highest possible efficiency while their drawbacks, such as narrow bandwidth and low linearity, do not apply to the GSM system due to the used modulation scheme, GMSK. In this paper, a demonstrator for GSM handsets is presented. Using Class-E amplification, it provides the necessary output power of 2 W at an efficiency far beyond present solutions while maintaining the GSM specifications. Furthermore, concepts for efficient power control of this amplifier are proposed.
AI Summary

AI Summary

Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.

Journal

E
European Microwave Conference
IF:
0
Papers:
7
Citations:
0

Organization

No organization information available