Patent ID: 11880731
Assignee: GIESECKE+DEVRIENT MOBILE SECURITY GMBH
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A chip card comprising:
a card body composed of one or several layers, of which at least one layer is a self-supporting metal layer,
an integrated circuit, and
a transponder coil coupled to the integrated circuit,
wherein the transponder coil has windings and gaps between the windings,
wherein the windings of the transponder coil are formed by the at least one metal layer,
wherein the gaps between the windings are filled with insulating material;
wherein the card body has two mutually opposite main areas, and
wherein at least one of the main areas is formed by the at least one metal layer and is covered fully with a cover layer arranged to protect the windings of the transponder coil from contact external to the card body.