SENSOR ARRANGEMENT FOR A FOREIGN OBJECT DETECTION DEVICE

A sensor arrangement for a foreign object detection device for a wireless power transfer system includes a multitude of detection cells, each comprising a sense coil including a winding spirally wound in a plane and having a multitude of turns. A multitude of input leads and one or more output leads are provided such that each detection cell may be connected to a current input and a current output. The input lead and the output lead of at least one sense coil is routed through a matrix-like structure to which the at least one sense coil belongs close to each other such as to reduce an area parallel to said matrix-like structure and enclosed by said input and output leads.