A linear 250 watt Doherty power amplifier based on two-stage power ICs for 1.8 GHz single and multi-carrier GSM applications

A linear 250 watt Doherty power amplifier based on two-stage power ICs for 1.8 GHz single and multi-carrier GSM applications

In this paper we describe the design and measured performance of a Doherty power amplifier constructed using two-stage power amplifier IC building blocks. The Doherty PA was designed for single- and multi-carrier GSM applications in the 1800 MHz band. The 3-dB compression point of the amplifier is 5...

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Bibliographische Detailangaben
Hauptverfasser: Bokatius, M., Bigny, G., Hart, P., Wood, J.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Application specific integrated circuits
digital predistortion
Doherty
error correction
GSM
Linearity
MC-GSM
Power amplifiers
Power integrated circuits
Predistortion
Radio frequency
Radiofrequency amplifiers
Radiofrequency integrated circuits
Semiconductor optical amplifiers
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Beschreibung
Zusammenfassung:In this paper we describe the design and measured performance of a Doherty power amplifier constructed using two-stage power amplifier IC building blocks. The Doherty PA was designed for single- and multi-carrier GSM applications in the 1800 MHz band. The 3-dB compression point of the amplifier is 54 dBm, and the PA displays excellent raw linearity for use in single-carrier GSM applications. Using a commercial digital predistortion system, the amplifier provides power output of 47 dBm at -70 dBc correction with a two-carrier GSM signal, and 45.5 dBm at -60 dBc correction with a four-carrier GSM signal.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2009.5165937