Multiple input single output configurations to improve performances and robustness of acoustic power transfer.

Powering and communicating with sensors placed behind metal walls is required in various applications such as submarine hulls, pressurized tanks or pipes. Acoustic power transfer (APT) is an excellent option to supply these sensors without making through holes. However, the power transfer performances of APT systems can be strongly degraded by the destructive interferences of emitted waves, typically when the receiver diameter is smaller than the transmitter's one.