Title :
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
fDate :
6/1/2012 12:00:00 AM
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;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2012.2197383
