A design strategy for AM/PM compensation in GaN Doherty power amplifiers

Camarchia, Vittorio, Colantonio, Paolo, Giannini, Franco, Giofre, Rocco, JIang, Tao, Pirola, Marco, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X and Ramella, Chiara 2017. A design strategy for AM/PM compensation in GaN Doherty power amplifiers. IEEE Access 5 , pp. 22244-22251. 10.1109/ACCESS.2017.2759164

Preview

PDF - Published Version Available under License Creative Commons Attribution. Download (9MB) | Preview

Abstract

This paper presents the theoretical analysis of phase distortion (AM/PM) mechanisms in Gallium Nitride (GaN) Doherty power amplifiers (DPAs) and a novel approach to optimize the tradeoff between linearity and efficiency. In particular, it is demonstrated how it is possible to mitigate the AM/PM by designing a suitable mismatch at the input of the active devices, based on the identification of constant AM/PM and gain contour circles. The proposed theory is experimentally confirmed by source- and load-pull measurements and further validated through the design and realization of a 7 GHz 10 W DPA based on GaN monolithic technology.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
ISSN:	2169-3536
Date of First Compliant Deposit:	3 October 2017
Date of Acceptance:	28 September 2017
Last Modified:	03 May 2023 03:39
URI:	https://orca.cardiff.ac.uk/id/eprint/105160

Citation Data

Cited 26 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item