Realization of a 30-W highly efficient and linear reconfigurable dual-band power amplifier using the continuous mode approach. Issue 2 (April 2014)

• Record Type: Journal Article
• Authors: Carrubba, Vincenzo; Maroldt, Stephan; Mußer, Markus; Walcher, Herbert; Van Raay, Friedbert; Quay, Rüdiger; Ambacher, Oliver; Wiegner, Dirk; Seyfried, Ulrich; Bohn, Thomas; Pascht, Andreas
• Is Part Of: International journal of microwave and wireless technologies. Volume 6:Issue 2(2014)
• Page Start: 115
• Page End: 128
• Publication Date: 2014-04
• Subjects: Wireless communication systems -- Periodicals; Microwave circuits -- Periodicals; Radio frequency -- Periodicals; 621.381305
• DOI: 10.1017/S1759078713000937
• Languages: English
• ISSNs: 1759-0787

Abstract

<abstract abstract-type="normal"> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>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 <italic>power amplifiers</italic> (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.</p> </abstract>