Renesas Design Austria Gmbh

Jernej Izak

Francesco Antonetti

Mobile device () for wireless communication with another device in the HF frequency area, which mobile device comprises: a communication stage () with a communication unit () connected via a first matching unit with a first antenna to optimize for a load modulated communication with the other device; a charge stage () with a charge unit () connected via a second matching unit with a second antenna to optimize for wireless charging of a battery () of the mobile device (), wherein that the first and second antennas are realized as only one single antenna () and that the communication stage () comprises a first switch stage () arranged in the path between the communication unit () and the single antenna () to connect or disconnect the communication unit () to/from the single antenna () and that the charge stage () comprises a second switch stage () arranged in the path between the charge unit () and the single antenna () to connect or disconnect the charge unit () to/from the single antenna () and that the mobile device () comprises a controller stage () connected to the first switch stage () and the second switch stage () to connect the communication unit () with and to disconnect the charge unit () from the single antenna () in a communication mode of the mobile device () and to connect the charge unit () with and to disconnect the communication unit () from the single antenna () in a charge mode of the mobile device ().

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Graz, Austria

Jernej Izak