This work presents a performance improvement technique for supply-modulated (SM) power amplifiers (PAs). Differently from the typical solutions, the SM PA is treated as a double-input nonlinear dynamic device, for which a dynamic supply shaping function and an RF digital predistorter are jointly identified by means of a gradient-based multi-objective optimization (MOO) technique. Simulation-based tests show that the MOO-based optimal inputs can greatly enhance the SM PA effectively exploring, in an automatic way, the best compromise between linearity and efficiency.

Supply-Modulated PA Performance Enhancement by Joint Optimization of RF Input and Supply Control

Mengozzi M.;Gibiino G. P.;Angelotti A. M.;Florian C.;Santarelli A.
2020

Abstract

This work presents a performance improvement technique for supply-modulated (SM) power amplifiers (PAs). Differently from the typical solutions, the SM PA is treated as a double-input nonlinear dynamic device, for which a dynamic supply shaping function and an RF digital predistorter are jointly identified by means of a gradient-based multi-objective optimization (MOO) technique. Simulation-based tests show that the MOO-based optimal inputs can greatly enhance the SM PA effectively exploring, in an automatic way, the best compromise between linearity and efficiency.
Asia-Pacific Microwave Conference Proceedings, APMC
585
587
Mengozzi M.; Gibiino G.P.; Angelotti A.M.; Florian C.; Santarelli A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/805730
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