DocumentCode
1990316
Title
An IF-Predistorter for TWTA-Linearization in 16 QAM Digital Radio
Author
Holz, W.
Author_Institution
STANDARD ELEKTRIK LORENZ AG, Ostendstr.3, 7530 Pforzheim, W-Germany
fYear
1984
fDate
10-13 Sept. 1984
Firstpage
543
Lastpage
548
Abstract
A predistorter is described, which linearizes the travelling wave tube amplifier of a 140 Mbit/s 16 QAM digital radio system. After discussing the nonlinear behaviour of the TWT, the predistortion circuit is explained. Measurement results show the nonlinear compensation capability of the predistorter. In the 16 QAM radio system average output power and efficiency can be increased significantly without degradation of the bit error performance.
Keywords
Circuits; Digital communication; Frequency; High power amplifiers; Linearity; Power amplifiers; Power generation; Predistortion; Quadrature amplitude modulation; Radiofrequency amplifiers;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1984. 14th European
Conference_Location
Liege, Belgium
Type
conf
DOI
10.1109/EUMA.1984.333375
Filename
4132088
Link To Document