Frequency-selective mass structures

There is provided an apparatus for wirelessly charging a mobile device (5) and the same for the radio coupling, as well as a vehicle-mounted charging and radio link system comprising a device for wirelessly charging a mobile device (5) and to the radio coupling indicated. The device comprises a wireless low-frequency charging device (1) and a high-frequency signal coupling means (2). With the aim of wireless low-frequency charging device (1) and the high-frequency signal coupling means (2) perform the simplest possible way combined, the solution of the invention provides that the high-frequency signal coupling means comprises a high-frequency coupling structure (20) for wireless coupling of a high-frequency signal comprising from or to the mobile radio device and a frequency-selective structure (30), wherein the frequency selective structure (30) between the low-frequency charging device and the high-frequency coupling structure (20) is arranged, wherein the frequency selective structure (30) permeable to the low-frequency substantially and is reflective of the high-frequency substantially.