Abstract: Card incorporating a transponder, including an electronic unit and an antenna electrically connected to the electronic unit, wherein the antenna is formed by an uninsulated conductor track, which is arranged on an insulating support. The track defines at least one winding and has first and second ends respectively located on either side of the at least one winding. The electronic unit is arranged inside or outside the at least one winding on a side of the first end, to which it is electrically connected. The second end of the track is electrically connected to the electronic unit by an electric wire fitted with an insulating sheath crossing the at least one winding, wherein the first and second end parts of the electric wire are at least partially stripped to assure there are electrical contacts necessary for an electrical connection between the second end of the track and the electronic unit.

Abstract: One characteristic of electronic labels is that they can be read and written on without electrical contact through the communication coil (1). The reading heading is then positioned at some distance and communicates with the label through electromagnetic waves. When these labels are placed on metallic objects, reading becomes difficult even impossible because of the dispersion of the waves in the object. To overcome this drawback, the invention proposes the adding of an electromagnetic conductive element (3, 3?) to the coil (1) in order to insulate it (1) and enhance the reception quality.