Patent ID: 11860208
Assignee: VITESCO TECHNOLOGIES GMBH
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H  B  Y | IPC B  G  H

Claim 16:
17. An inductive charging system for an electrical vehicle containing an outer bottom coil or a vehicle-side underbody coil and a device for testing a function of antennas, wherein the antennas are provided for a detection of a foreign metal object located in an effective area of the coil, the device comprising:
an antenna system containing a selection unit having inputs and an output, a further selection unit having a plurality of outputs and an input, and a plurality of antenna units, wherein each of said antenna units having an antenna and at least one resistor interconnected in each case between an assigned one of said inputs of said selection unit and a specific one of said plurality of outputs of said further selection unit;
a computing unit having an input and outputs and configured to:
provide a control signal for said selection unit and said further selection unit at a first output of said outputs of said computing unit, wherein the control signal defining which input of said inputs of said selection unit is to be connected to said output of said selection unit and which of said outputs of said further selection unit is biased with a bias voltage applied to said input of said further selection unit; and
receive an antenna signal present at said output of said selection unit at said input of said computing unit.