Title :
Fully Digital Adaptive Control of a Feed-Forward Amplifier Implemented with Digital Signal Processor
Author :
Goasguen, S. ; Zhao, G. ; Ghannouchi, F.M.
Author_Institution :
Departement of Electrical and Computer Engineering, Ecole Polytechnique de Montreal, C.P. 6079, Succ. Centre Ville, Montreal, Canada H3C 3A7. goasguen@univ-rennesl.fr
Abstract :
A complete digital adaptive control is introduced for the mulling and the error loop of a 1.96 GHz feed-forward linearization system. The nulling loop is controlled with a well known power gradient method and the error loop is controlled with a frequency domain cancellation method using a Digital Signal Processor (DSP). To our knowledge it is the First time that experimentals results show 20 dB improvement on the inter-modulations product regardless of the input power level
Keywords :
Adaptive control; Digital signal processing; Digital signal processors; Error correction; Feedforward systems; Frequency domain analysis; Gradient methods; Phase modulation; Power amplifiers; Voltage control;
Conference_Titel :
Microwave Conference, 1998. 28th European
Conference_Location :
Amsterdam, Netherlands
DOI :
10.1109/EUMA.1998.338231
