CHARGER WITH TWO COILS FOR WIRELESS CHARGING

A system (1) of a power device (2) and a portable device (3) for wireless charging of a battery (4) of the portable device (3), which power device (2) comprises a first antenna (8) to emit a magnetic field and which portable device (3) comprises a portable antenna (6) exposed to the magnetic field and connected to a charge stage (7) to rectify an antenna signal from the portable antenna (6) and to provide a charge voltage (UI) to charge the battery (3) wherein the power device (2) comprises a second antenna (10) realized identical as the first antenna (8) and arranged in a distance (L) to the first antenna (8) and on the same coil axis (A) as the first antenna (8) to generate a Helmholtz magnetic field and wherein a first power amplifier (9) directly connected to the first antenna (8) and a second power amplifier (11) directly connected to the second antenna (10) are realized identical and on the same substrate (12).