APPARATUS FOR HIGH-FREQUENCY NEAR-FIELD COMMUNICATION AND FOR INDUCTIVELY RECHARGING A PORTABLE ELECTRONIC DEVICE

摘要

The invention relates to an apparatus (1) for high-frequency communication and for inductively recharging a device, comprising a recharging surface (5), at least one recharging antenna (6) emitting a low-frequency magnetic field, and a layer (7) made of ferromagnetic material. The apparatus comprises at least one communication antenna (31, 32) and a printed circuit board (2). The communication antenna (31, 32) is in the form of a coil which locally surrounds the layer (7) and which has an axis of symmetry located in a plane extending parallel to the layer (7). The material of the layer (7) is selected to have, at a high frequency, an imaginary portion with a sufficiently high permeability to cause leaks on a surface of the layer (7) extending perpendicularly to the layer, while maintaining, at a low frequency, an imaginary portion with a sufficiently low permeability to allow for inductive recharging.