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.

Camarchia, V., Colantonio, P., Giannini, F., Giofre, R., Jiang, T., Pirola, M., et al. (2017). A design strategy for AM/PM compensation in GaN Doherty Power Amplifiers. IEEE ACCESS, 5, 22244-22251 [10.1109/ACCESS.2017.2759164].

A design strategy for AM/PM compensation in GaN Doherty Power Amplifiers

Colantonio P.;Giannini F.;Giofre R.;
2017-01-01

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.
2017
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/01 - ELETTRONICA
English
Con Impact Factor ISI
Doherty power amplifiers; gallium nitride; linearity; electronically tunable networks
Camarchia, V., Colantonio, P., Giannini, F., Giofre, R., Jiang, T., Pirola, M., et al. (2017). A design strategy for AM/PM compensation in GaN Doherty Power Amplifiers. IEEE ACCESS, 5, 22244-22251 [10.1109/ACCESS.2017.2759164].
Camarchia, V; Colantonio, P; Giannini, F; Giofre, R; Jiang, T; Pirola, M; Quaglia, R; Ramella, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/190134
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