This paper presents a design strategy to simultaneously optimize the efficiency and linearity of a single-device class-AB power amplifier, given minimum output power and gain requirements. The adopted linearity metric is the highest inter-modulation distortion in a two-tone test with 20MHz spacing. The simultaneous selection of optimum source and load terminations that provide the best trade-off among all of the requirements is described in detail, and the synthesis of the matching networks is then presented. A prototype is developed based on a 6W packaged GaN device around 3.5 GHz, manufactured and measured. According to the measured results, the amplifier achieves output power higher than 38dBm with associated gain higher than 12 dB and saturated power-added efficiency in excess of 73% in a single-tone test at 3.25 GHz, while providing a 33% power-added efficiency and -30 dBc inter-modulation distortion in the 20MHz two-tone test.

Efficiency versus linearity trade-off in an S-band class-AB power amplifier / Zhang, Zhifan; Piacibello, A; Camarchia, V.. - ELETTRONICO. - (2023), pp. 26-28. (Intervento presentato al convegno 2023 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications tenutosi a Las Vegas, NV, USA nel 22-25 January 2023) [10.1109/PAWR56957.2023.10046214].

Efficiency versus linearity trade-off in an S-band class-AB power amplifier

Zhang, Zhifan;Piacibello, A;Camarchia, V.
2023

Abstract

This paper presents a design strategy to simultaneously optimize the efficiency and linearity of a single-device class-AB power amplifier, given minimum output power and gain requirements. The adopted linearity metric is the highest inter-modulation distortion in a two-tone test with 20MHz spacing. The simultaneous selection of optimum source and load terminations that provide the best trade-off among all of the requirements is described in detail, and the synthesis of the matching networks is then presented. A prototype is developed based on a 6W packaged GaN device around 3.5 GHz, manufactured and measured. According to the measured results, the amplifier achieves output power higher than 38dBm with associated gain higher than 12 dB and saturated power-added efficiency in excess of 73% in a single-tone test at 3.25 GHz, while providing a 33% power-added efficiency and -30 dBc inter-modulation distortion in the 20MHz two-tone test.
2023
978-1-6654-9317-8
File in questo prodotto:
File Dimensione Formato  
Efficiency_versus_linearity_trade-off_in_an_S-band_class-AB_power_amplifier.pdf

accesso riservato

Descrizione: pubblicato
Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 1.25 MB
Formato Adobe PDF
1.25 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
RWW_HEPAclassABV2.pdf

accesso aperto

Descrizione: post print autore
Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: Pubblico - Tutti i diritti riservati
Dimensione 597.85 kB
Formato Adobe PDF
597.85 kB Adobe PDF Visualizza/Apri
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: https://hdl.handle.net/11583/2979223