Impact of Switching Glitches in Class-G Power Amplifiers

Author

Sehajpal, Sumati ; Taylor, Stewart S. ; Allstot, David J. ; Walling, Jeffrey S.

Author_Institution

Dept. of Electr. & Comput. Eng., State Univ. of New Jersey, Piscataway, NJ, USA

Volume

22

Issue

6

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

282

Lastpage

284

Abstract

Envelope elimination and restoration (EER) based transmitters have attracted attention recently for two reasons: 1) The desire for increased spectral efficiency has mandated modulation standards that have large peak-to-average ratios (PAR). The increase in spectral efficiency is traded off against a decrease in average power-added-efficiency (PAE) when a linear power amplifier is used; however, when EER is used, it is decoupled somewhat from spectral efficiency. 2) Through the use of fast on-chip signal processing, the natural advantage of scaled CMOS is exploited by enabling switching power amplifier classes (e.g., class-E). This letter examines limitations associated with voltage supply switching glitches in class-G power amplifiers.

Keywords

CMOS analogue integrated circuits; power amplifiers; transmitters; EER based transmitters; PAR; class-G power amplifiers; envelope elimination and restoration based transmitters; fast on-chip signal processing; linear power amplifier; peak-to-average ratios; power-added-efficiency; scaled CMOS; switching power amplifier classes; voltage supply switching glitches; CMOS integrated circuits; Modulation; Peak to average power ratio; Signal to noise ratio; Switches; Transmitters; Class-G; elimination and restoration (EER); linearization; power amplifier (PA); supply modulation;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2012.2197383

Filename

6202383