Antenna system for contactless microcircuit
AssigneeInside Secure
InventorsBruno Charrat, Pierre Pic
Life of this patent
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Abstract
The present invention relates to a method for manufacturing a microcircuit card, including steps of: forming a first antenna coil in a card, the first antenna coil having a part following the edge of the card, forming a module having a microcircuit and a second antenna coil around and connected to the microcircuit, and implanting the module into the card at a precise position in relation to the edge of the card, the first antenna coil being coupled by induction to the second antenna coil, the first antenna coil being pre-formed in such a way that only one part of the second antenna coil is at a distance from the first antenna coil of less than 5% of the width of the second antenna coil.
Claims16
A method for manufacturing a microcircuit card, comprising steps of:
- forming a first antenna coil in a card, the first antenna coil comprising a part following the edge of the card,
- forming a module comprising a microcircuit and a second antenna coil disposed around and connected to the microcircuit, and
- implanting the module into the card at a precise position in relation to the edge of the card, the first antenna coil being coupled by induction to the second antenna coil,
- wherein the first antenna coil is pre-formed in such a way that only one part of the second antenna coil is at a distance from the first antenna coil of less than 5% of the width of the second antenna coil.
A microcircuit card comprising:
- a card,
- a first antenna coil implanted into the card, and comprising a part following the edge of the card, and
- a module comprising a microcircuit and a second antenna coil disposed around and connected to the microcircuit, the module being implanted into the card at a precise position in relation to the edge of the card,
- wherein the first antenna coil is shaped in such a way that only one part of the second antenna coil is at a distance from the first antenna coil of less than 5% of the width of the second antenna coil.
Dependencies are inferred from the claim text.