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2D augmented Hammerstein model for concurrent dual-band power amplifiers

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5 Author(s)
Y. -J. Liu ; Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900, People's Republic of China ; W. Chen ; B. Zhou ; J. Zhou
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A two-dimensional (2D) augmented Hammerstein (2D-AH) model is proposed for the first time to achieve high modelling accuracy for concurrent dual-band power amplifiers (PAs). By considering the nonlinear memory effect, the 2D-AH model is an augmented version of the conventional Hammerstein structure and can provide comparable performance to the prior 2D-DPD model. But it outperforms the 2D-DPD model in terms of complexity. Measurements were carried out for a dual-band Doherty PA, both for forward modelling and for DPD application. The results prove the superiority of the 2D-AH model.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 19 )