WIRELESS POWER TRANSMISSION DEVICE Russian patent published in 2023 - IPC H02J50/12 

FIELD: electrical engineering.

SUBSTANCE: invention relates to wireless power transmission devices capable of charging one or more mobile devices at the same time. The wireless power transmission device comprises a power source, an alternator, a radio frequency amplifier, impedance matching circuits, an electromagnetic energy transmitter in the form of a loop antenna and a subwavelength cavity resonator consisting of metal conductors and capacitors, and includes at least one electromagnetic energy receiver inside the resonator space, whereas the subwavelength cavity resonator is an array of resonant circuits arranged parallel to each other, made of one or more turns of wire and containing capacitors, whereas the resonant circuits are interconnected inductively and/or by means of conductors.

EFFECT: achieving the same efficiency of charging several receivers of electromagnetic energy in the internal space of the subwave cavity resonator at the same frequency.

1 cl, 3 dwg