CHARGER WITH TWO COILS FOR WIRELESS CHARGING

A system of a power device and a portable device for wireless charging of a battery of the portable device, which power device comprises a first antenna to emit a magnetic field and which portable device comprises a portable antenna exposed to the magnetic field and connected to a charge stage to rectify an antenna signal from the portable antenna and to provide a charge voltage (U) to charge the battery wherein the power device comprises a second antenna realized identical as the first antenna and arranged in a distance (L) to the first antenna and on the same coil axis (A) as the first antenna to generate a Helmholtz magnetic field and wherein a first power amplifier directly connected to the first antenna and a second power amplifier directly connected to the second antenna are realized identical and on the same substrate.