In this paper we propose a dual band digital predistorter (DB-DPD), suitable for concurrent dual-band power amplifiers. A sub-sampling receiver is at the basis of the feedback path, while the vectorial gain adjuster is achieved at the proper digital intermediate frequency. The proposed method adopts a conventional memory polynomial DPD for linearization. The approach is tested by system-level simulations and it was proven to be able to correct most of the nonlinearity, with only a modest performance loss with respect to single-band architectures.

A new approach for concurrent Dual-Band IF Digital PreDistortion: System design and analysis / A. Cidronali; I. Magrini; R. Fagotti; G. Manes. - STAMPA. - (2008), pp. 127-130. (Intervento presentato al convegno Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, 2008. INMMIC 2008. tenutosi a Malaga nel 24-25 Nov. 2008) [10.1109/INMMIC.2008.4745733].

A new approach for concurrent Dual-Band IF Digital PreDistortion: System design and analysis

CIDRONALI, ALESSANDRO
Membro del Collaboration Group
;
MAGRINI, IACOPO;FAGOTTI, ROSSANO;MANES, GIANFRANCO
2008

Abstract

In this paper we propose a dual band digital predistorter (DB-DPD), suitable for concurrent dual-band power amplifiers. A sub-sampling receiver is at the basis of the feedback path, while the vectorial gain adjuster is achieved at the proper digital intermediate frequency. The proposed method adopts a conventional memory polynomial DPD for linearization. The approach is tested by system-level simulations and it was proven to be able to correct most of the nonlinearity, with only a modest performance loss with respect to single-band architectures.
2008
proceedings of 2008 Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits
Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, 2008. INMMIC 2008.
Malaga
24-25 Nov. 2008
A. Cidronali; I. Magrini; R. Fagotti; G. Manes
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/392918
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