Campus del Baix Llobregat
 
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(2012-2)

DG ENG AERO/SIS TEL

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ENG TELEC 2NCICLE 01

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ETT SIST TELEC 91

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MU AEROSPACE S&T 09

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Projecte llegit

Títol: Digital Predistortion for Concurrent Dual-Band Power Amplifiers with Envelope Tracking

Estudiants que han llegit aquest projecte:

Director: GILABERT PINAL, Pere Lluís

Departament: TSC

Títol: Digital Predistortion for Concurrent Dual-Band Power Amplifiers with Envelope Tracking

Data inici oferta: 13-02-2013     Data finalització oferta: 13-10-2013


Estudis d'assignació del projecte:
    ENG TELEC 2NCICLE 01
    GR ENG SIS TELECOMUN
    MU AEROSPACE S&T
    MU MASTEAM
Tipus: Individual
 
Lloc de realització: EETAC
 
Segon director (UPC): MONTORO LÓPEZ, Gabriel
 
Paraules clau:
Digital Predistortion, Envelope Tracking, Concurrent Dual-Band
 
Descripció del contingut i pla d'activitats:
El projecte consisteix en dissenyar un predistorsionador digital per a linealitzar amplificadors de potència dual-band en els que s'aplica alimentació dinàmica. L'entorn de treball per testejar l'algoritme és Matlab i instrumentació: AWG+DO.

 
Overview (resum en anglès):
The Power Amplifier (PA) is the device in a transmission system responsible of providing the power level needed to the signal before sending it to the radio channel.PA is not only the most power consuming component in the transmitter, but it is also the responsible for the main nonlinear effects in the transmission chain. For this reason, both the linearization and the efficiency improvement are nowadays within the main goals in the research on the radio-frequency field.

There are several linearization techniques aimed to ensure linearity in power amplifiers, the most common of which is Digital Predistortion (DPD). On the other hand, there are also several amplifying architectures proposed in order to maximize the power efficiency in the amplification process. The most common efficient architecture are, nowadays, LINC, Doherty, and Dynamic Supply with Envelope Tracking (ET). Finally, Dual-Band Power Amplifiers (DB-PA) are needed in order to allow the use of transmitters with a single front-end transmitting concurrently multi-band signal.

This project aims to contribute in the linearization of Dual-Band power amplifiers supplied with the Envelope Tracking technique. Therefore, in this project three-dimensional behavioral memory polynomial models able to model and later linearize the DB-PA supplied with ET.

Along this project, different behavioral models are presented and tested in different configurations, measuring their accuracy in order to justify the need of 3D-MP behavioral models in front of other configurations not taking in account all the inherent effects of a DB-PA dynamically supplied. Finally, the best models are selected and applied in linearization in a DPD function. Finally, results supporting the contribution of 3D-DPD are provided.


Data de generació 26/01/2021