A novel predistortion approach well suited for MMIC design is discussed. The theoretical analysis shows third-order intermodulation product (IMP3) cancellation independent of the specific technology exploited for implementation and of the detailed behaviour of the power stage nonlinearity; further improvements can be obtained through optimization. The active stages of the predistorter are modeled through a nonlinear describing function, which can be experimentally characterized through standard LS S-parameters measurements. The predistortion scheme has been implemented within the Agilent ADS environment and applied to the linearity optimization of a power amplifier stage. In accordance with theoretical results, significant improvement in the linearity of the Pin-Pout is demonstrated together with IMP3 reduction. A sensitivity analysis on the optimization parameters is also presented, showing that this approach is robust and well suited for circuit design.

Optimum design of a new predistortion scheme for high linearity K-band MMIC power amplifiers / P., Bianco; DONATI GUERRIERI, Simona; Ghione, Giovanni; Pirola, Marco; Naldi, Carlo; C., Florian; G., Vannini; A., Santarelli; F., Filicori; L., Manfredi. - (2001), pp. 689-692. ((Intervento presentato al convegno Gallium Arsenide applications symposium. Gaas 2001 tenutosi a London (GBR) nel 24-28 Sep. 2001.

Optimum design of a new predistortion scheme for high linearity K-band MMIC power amplifiers

DONATI GUERRIERI, Simona;GHIONE, GIOVANNI;PIROLA, Marco;NALDI, Carlo;
2001

Abstract

A novel predistortion approach well suited for MMIC design is discussed. The theoretical analysis shows third-order intermodulation product (IMP3) cancellation independent of the specific technology exploited for implementation and of the detailed behaviour of the power stage nonlinearity; further improvements can be obtained through optimization. The active stages of the predistorter are modeled through a nonlinear describing function, which can be experimentally characterized through standard LS S-parameters measurements. The predistortion scheme has been implemented within the Agilent ADS environment and applied to the linearity optimization of a power amplifier stage. In accordance with theoretical results, significant improvement in the linearity of the Pin-Pout is demonstrated together with IMP3 reduction. A sensitivity analysis on the optimization parameters is also presented, showing that this approach is robust and well suited for circuit design.
9780862131586
File in questo prodotto:
File Dimensione Formato  
1411089.pdf

non disponibili

Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 89.03 kB
Formato Adobe PDF
89.03 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/11583/1411089
 Attenzione

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