This paper focuses and provides experimental data for reconfigurable class-AB power amplifiers capable to adjust their linear power handling capability according with the application requirements. This feature is aimed at optimizing the energy requirement of the PAs. Two architectures and technologies have been considered. The first is based on SiGe HBTs with different sizes, it shows a CW PAE around 38% for the state 1 and 42% for state 2 respectively when terminated with optimum terminations. This circuit is conceived to be involved in a 1-bit step envelope tracking architecture, in which a factor two of improvement in terms of average PAE has been demonstrated. The second technique consists in controlling the output back-off of a GaN HEMT PA resulting in a significant increase of the efficiency through an, in principle, arbitrary power dynamic range. The prototype demonstrated an average PAE enhancement at 7 dB back-off of 2.1 and a maximum linear output power can be achieved up to 30 dBm, when driven by a 2.14 GHz WCDMA signal.

Power amplifier architectures with discrete power control for high average efficiency / M. Mercanti; A. Cidronali; I. Magrini; G. Manes. - STAMPA. - (2010), pp. 1-4. (Intervento presentato al convegno RF Front-ends for Software Defined and Cognitive Radio Solutions (IMWS), 2010 IEEE International Microwave Workshop Series on tenutosi a Aveiro (PT) nel 22-23 Feb. 2010) [10.1109/IMWS.2010.5441007].

Power amplifier architectures with discrete power control for high average efficiency

MERCANTI, MASSIMILIANO;CIDRONALI, ALESSANDRO
Membro del Collaboration Group
;
MAGRINI, IACOPO;MANES, GIANFRANCO
2010

Abstract

This paper focuses and provides experimental data for reconfigurable class-AB power amplifiers capable to adjust their linear power handling capability according with the application requirements. This feature is aimed at optimizing the energy requirement of the PAs. Two architectures and technologies have been considered. The first is based on SiGe HBTs with different sizes, it shows a CW PAE around 38% for the state 1 and 42% for state 2 respectively when terminated with optimum terminations. This circuit is conceived to be involved in a 1-bit step envelope tracking architecture, in which a factor two of improvement in terms of average PAE has been demonstrated. The second technique consists in controlling the output back-off of a GaN HEMT PA resulting in a significant increase of the efficiency through an, in principle, arbitrary power dynamic range. The prototype demonstrated an average PAE enhancement at 7 dB back-off of 2.1 and a maximum linear output power can be achieved up to 30 dBm, when driven by a 2.14 GHz WCDMA signal.
2010
proceeding of 2010 IEEE International Microwave Workshop Series on RF Front-ends for Software Defined and Cognitive Radio Solutions (IMWS)
RF Front-ends for Software Defined and Cognitive Radio Solutions (IMWS), 2010 IEEE International Microwave Workshop Series on
Aveiro (PT)
22-23 Feb. 2010
M. Mercanti; A. Cidronali; I. Magrini; G. Manes
File in questo prodotto:
File Dimensione Formato  
Power_amplifier_architectures_with_discrete_power_control_for_high_average_efficiency.pdf

Accesso chiuso

Tipologia: Pdf editoriale (Version of record)
Licenza: Tutti i diritti riservati
Dimensione 967.74 kB
Formato Adobe PDF
967.74 kB Adobe PDF   Richiedi una copia

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

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/393668
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 0
social impact