We carry out a comparative design study on two high-efficiency power amplifiers (a second-harmonic tuning LD-MOS and a Doherty GaN-based amplifier) linearized through baseband digital predistortion so as to comply with the W-CDMA 3GPP standard with acceptable efficiency. Several predistortion schemes (both memoryless and with memory) were tried, having in mind the final FPGA implementation. The results, besides highlighting some interesting features of the two amplifiers considered, show that significant improvements can be achieved in the Power Added Efficiency (PAE) even starting from a highly efficient but poorly linear power stage.

Real-time FPGA-based baseband predistortion of W-CDMA 3GPP high-efficiency power amplifiers: Comparing GaN HEMT and Si LDMOS predistorted PA performances / Quaglia, Roberto; Camarchia, Vittorio; DONATI GUERRIERI, Simona; Ghione, Giovanni; Pirola, Marco. - STAMPA. - Unico:(2009), pp. 342-345. ((Intervento presentato al convegno Microwave Conference, 2009. EuMC 2009. European tenutosi a Roma nel Sept. 29 2009-Oct. 1 2009.

Real-time FPGA-based baseband predistortion of W-CDMA 3GPP high-efficiency power amplifiers: Comparing GaN HEMT and Si LDMOS predistorted PA performances

QUAGLIA, ROBERTO;CAMARCHIA, VITTORIO;DONATI GUERRIERI, Simona;GHIONE, GIOVANNI;PIROLA, Marco
2009

Abstract

We carry out a comparative design study on two high-efficiency power amplifiers (a second-harmonic tuning LD-MOS and a Doherty GaN-based amplifier) linearized through baseband digital predistortion so as to comply with the W-CDMA 3GPP standard with acceptable efficiency. Several predistortion schemes (both memoryless and with memory) were tried, having in mind the final FPGA implementation. The results, besides highlighting some interesting features of the two amplifiers considered, show that significant improvements can be achieved in the Power Added Efficiency (PAE) even starting from a highly efficient but poorly linear power stage.
File in questo prodotto:
File Dimensione Formato  
AC848C3Fd01.pdf

non disponibili

Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: PUBBLICO - Tutti i diritti riservati
Dimensione 525.28 kB
Formato Adobe PDF
525.28 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2373299
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo