Abstract: A chipcard having a card body formed by at least one dielectric layer and one metal layer, the metal layer comprising a cavity and an outline, the metal layer further comprising a slit, the card further comprising an antenna extending in the cavity. The card further includes at least one metal label at least partially covering the cavity and the antenna, the label being fixed onto one of the faces of the card, the metal label comprising a metal layer comprising a pattern comprising a first part formed by first etched metal lines delimiting at least one zone that is at least partially of metal, and a second part composed of second etched metal lines forming only open loops.

Abstract: A smart card including an upper metal layer and a lower metal layer disposed opposite each other; an internal cavity arranged between the upper and lower metal layers; and an RF antenna disposed in the internal cavity; in which the upper and lower metal layers each include a partially recessed area opposite the RF antenna, each partially recessed area including at least one opening through the thickness of the metal layer and each partially recessed area being partially covered by at least one metal protrusion extending from one edge of the partially recessed area so as to define the contour of the at least one opening.