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Realization of a 30-W highly efficient and linear reconfigurable dual-band power amplifier using the continuous mode approach

Published online by Cambridge University Press:  26 November 2013

Vincenzo Carrubba ,
Stephan Maroldt ,
Markus Mußer ,
Herbert Walcher ,
Friedbert Van Raay ,
Rüdiger Quay ,
Oliver Ambacher ,
Dirk Wiegner ,
Ulrich Seyfried  and
Thomas Bohn
...Show all authors
Vincenzo Carrubba*
Affiliation:
Fraunhofer Institute for Applied Solid-State Physics (IAF), Tullastraße 72, 79108 Freiburg, Germany. Phone: +49 761 5159 257
Stephan Maroldt
Affiliation:
Fraunhofer Institute for Applied Solid-State Physics (IAF), Tullastraße 72, 79108 Freiburg, Germany. Phone: +49 761 5159 257
Markus Mußer
Affiliation:
Fraunhofer Institute for Applied Solid-State Physics (IAF), Tullastraße 72, 79108 Freiburg, Germany. Phone: +49 761 5159 257
Herbert Walcher
Affiliation:
Fraunhofer Institute for Applied Solid-State Physics (IAF), Tullastraße 72, 79108 Freiburg, Germany. Phone: +49 761 5159 257
Friedbert Van Raay
Affiliation:
Fraunhofer Institute for Applied Solid-State Physics (IAF), Tullastraße 72, 79108 Freiburg, Germany. Phone: +49 761 5159 257
Rüdiger Quay
Affiliation:
Fraunhofer Institute for Applied Solid-State Physics (IAF), Tullastraße 72, 79108 Freiburg, Germany. Phone: +49 761 5159 257
Oliver Ambacher
Affiliation:
Fraunhofer Institute for Applied Solid-State Physics (IAF), Tullastraße 72, 79108 Freiburg, Germany. Phone: +49 761 5159 257
Dirk Wiegner
Affiliation:
Alcatel Lucent Bell-Labs, Lorenzstraße 10, 70435 Stuttgart, Germany
Ulrich Seyfried
Affiliation:
Alcatel Lucent Bell-Labs, Lorenzstraße 10, 70435 Stuttgart, Germany
Thomas Bohn
Affiliation:
Alcatel Lucent Bell-Labs, Lorenzstraße 10, 70435 Stuttgart, Germany
Andreas Pascht
Affiliation:
Alcatel Lucent Bell-Labs, Lorenzstraße 10, 70435 Stuttgart, Germany
*
Corresponding author: V. Carrubba Email: vincenzo.carrubba@iaf.fraunhofer.de
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Abstract

This paper presents the design methodology and the realization of a highly linear and power-efficient reconfigurable dual-band amplifier based on the continuous/Class-ABJ approach. The Class-ABJ theory allows presenting different reactive solutions on both fundamental and second harmonic terminations compared with the standard Class-AB mode. Despite the various terminations, a constant optimum output performance in terms of power, gain, and efficiency can still be achieved. The output impedances are then translated into frequency thus allowing the realization of broadband power amplifiers (PAs) at high-power level of 30 W. In this work, the Class-ABJ broadband approach will be used for the realization of a reconfigurable dual-band power amplifier operating in the two frequency bands 2.1–2.2 and 2.5–2.6 GHz. Continuous wave (CW) measurements on the realized PA show power and efficiency greater than 17 W and 55% in the two frequency bands with peak values up to 30 W and 63.7%. Indeed, it is shown that such novel modes can be predistorted and therefore the linearity requirement can also be met.

Keywords

Power amplifiers and linearizersCircuit design and applications
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 6 , Issue 2 , April 2014 , pp. 115 - 128
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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