Title :
Effect of modulation scheme on LINC transmitter power efficiency
Author :
Sundstrom, Lars ; Johansson, Mikael
Author_Institution :
Dept. of Appl. Electron., Lund Univ.
fDate :
9/29/1994 12:00:00 AM
Abstract :
The authors describe how the power efficiency of an LINC (linear amplification with nonlinear components) transmitter is affected by the modulation scheme when using a conventional power combiner to recombine the constant envelope signals. The efficiency originating from the recombining peak at 60% for low-level modulation schemes but decreases to below 20% for high level schemes
Keywords :
amplification; linearisation techniques; modulation; power amplifiers; radio transmitters; radiofrequency amplifiers; LINC transmitter; constant envelope signals; high level schemes; linear amplification; low-level schemes; modulation scheme; nonlinear components; power combiner; power efficiency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19941116
