This work deals with new design techniques of RF to dc converter coupled with commercial dc/dc converters, for efficient wireless power transfer. The dc/dc boost converter operates as current sinks, thus imposing challenging design constraints. We investigate the impact of applying a multi-sine RF input signal on power transfer efficiency, involving a source-pull optimization to maximize RF to dc energy conversion and maximizing the current throughput. This letter provides an experimental demonstration of 1.8 improvements with respect to conventional design at the operative frequency of 5.8 GHz.
Improving Wireless Power Transfer Efficiency With DC/DC Boost Charger by Multi-Sine Excitation at 5.8 GHz / Passafiume M.; Collodi G.; Cidronali A.. - In: IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS. - ISSN 1531-1309. - STAMPA. - 32:(2022), pp. 1-4. [10.1109/LMWC.2022.3160272]
Improving Wireless Power Transfer Efficiency With DC/DC Boost Charger by Multi-Sine Excitation at 5.8 GHz
Passafiume M.
Membro del Collaboration Group
;Collodi G.
Membro del Collaboration Group
;Cidronali A.
Membro del Collaboration Group
2022
Abstract
This work deals with new design techniques of RF to dc converter coupled with commercial dc/dc converters, for efficient wireless power transfer. The dc/dc boost converter operates as current sinks, thus imposing challenging design constraints. We investigate the impact of applying a multi-sine RF input signal on power transfer efficiency, involving a source-pull optimization to maximize RF to dc energy conversion and maximizing the current throughput. This letter provides an experimental demonstration of 1.8 improvements with respect to conventional design at the operative frequency of 5.8 GHz.
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