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Vectorially Combined Distributed Power Amplifiers for Software-Defined Radio Applications

Narendra, K. and Limiti, E. and Paoloni, C. and Collantes, J.-M. and Jansen, R. and Yarman, S. (2012) Vectorially Combined Distributed Power Amplifiers for Software-Defined Radio Applications. IEEE Transactions on Microwave Theory and Techniques, 60 (10). pp. 3189-3200. ISSN 0018-9480

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Abstract

A new technique for distributed power amplifier (DPA) design maximizing dc-RF conversion is presented. The topology is featured by the vectorial combination of the output current sources when the transistors are loaded by their distributed output networks. To verify the design concept, two prototype DPAs (a 600-mW pseudomorphic HEMT (pHEMT) DPA and a ~ 23-W pHEMT/GaN DPA) are designed, realized, built, and tested. To the authors' knowledge, the second DPA achieved state-of-the-art power performance (i.e., the combination of output power, gain, and efficiency) for DPAs within the frequency range up to 2 GHz, well suited for software-defined radio applications.

Item Type: Article
Journal or Publication Title: IEEE Transactions on Microwave Theory and Techniques
Uncontrolled Keywords: Broadband performance ; GaN ; current combining technique ; distributed power amplifier (DPA) ; efficiency ; gain ; output power ; pseudomorphic HEMT (pHEMT)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 56622
Deposited By: ep_importer_pure
Deposited On: 01 Aug 2012 10:33
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:29
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/56622

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