Patent ID: 11881637
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 4:
5. Antenna arrangement, comprising:
a magnetic antenna comprising a loop interrupted one or several times and at least one tuning element for tuning the magnetic antenna, and
a tuner connected to the tuning element,
wherein the tuner is configured to provide a control signal for tuning the magnetic antenna in dependence on an amplitude of a signal based on a magnetic field generated by the loop, and to control the tuning element with the control signal to tune the magnetic antenna,
wherein the tuner is configured to select a control signal parameter from a set of stored control signal parameters associated with corresponding amplitude values in dependence on the amplitude of the signal based on the magnetic field generated by the loop, and to provide the control signal in dependence on the control signal parameter,
or wherein the tuner is configured, when a transmitting signal is transmitted at at least two different frequencies, to determine a tuning direction in which the control signal is to be readjusted based on at least two amplitudes of the signal resulting from the at least two different frequencies of the transmitting signal based on the magnetic field generated by the loop, and to readjust the control signal in dependence on the determined tuning direction,
wherein the tuner comprises an induction loop or induction coil configured to provide the signal based on the magnetic field generated by the loop.