This paper presents a novel technique for power amplifier linearization in digital microwave radio systems. The proposed technique is based on the use of a predistortion circuit, whose AM/AM and AM/PM responses are separately implemented as polynomial approximations of the respective responses of the ideal linearizer. The proposed scheme is shown to attain superior performance in comparison with other well-known predistortion structures, such as those based on the cancellation of third or fifth order distortion, with no substantial aggravation in implementation complexity.
|Autori interni:||D'ANDREA, NUNZIO ALDO|
|Autori:||D'Andrea N.A.; Lottici V.; Reggiannini R.|
|Titolo:||RF power amplifier linearization through amplitude and phase predistortion|
|Anno del prodotto:||1996|
|Digital Object Identifier (DOI):||10.1109/26.544464|
|Appare nelle tipologie:||1.1 Articolo in rivista|