Abstract: A method of manufacturing a chip card, such as a dual interface card, is provided. The method generally includes collocating multiple card support sheets one onto the other, depositing a conductive adhesive onto contact pads on at least one of the sheets, positioning a dual interface module in a recess established in at least one of the sheets, and executing a lamination step.

Abstract: A coupling device is formed by a continuous conductive path having a central section and two extremity sections, the central section forming at least a small spiral for inductive coupling with the transponder device, the extremities sections forming each one large spiral for inductive coupling with the reader device, wherein the small spiral shows a larger pitch than the ones of the large spirals, and wherein the two extremities of the continuous path are loose such that the coupling device forms an open circuit. The pitches of the large spirals are chosen such as that the interturn stray capacitances is important and that the large spirals have mainly a capacitive behavior. And the pitch of the small spiral is chosen such as that the interturn stray capacitances are negligible, and that the small spiral has mainly an inductive behavior.

Abstract: A method for manufacturing a dual interface card includes at least the following step: collocating multiple card support sheets one onto the other, some of these sheets showing holes, in order to form a recess adapted to receive the dual interface module, one of the sheets supporting the antenna having solid metallic contact pads at least partially freely accessible in the recess depositing a conductive adhesive onto the contact pads positioning the dual interface module in the recess such that the pads of the module are contacting the conductive adhesive executing one single lamination step of the sheets with the module in order to: laminate the multiple layers together in order to form the card body embed the dual interface module in the recess and achieve the curing of the isotropic conductive adhesive and the permanent electrical contact between the antenna and the dual interface module.

Abstract: A coupling device is formed by a continuous conductive path having a central section and two extremity sections, the central section forming at least a small spiral for inductive coupling with the transponder device, the extremities sections forming each one large spiral for inductive coupling with the reader device, wherein the small spiral shows a larger pitch than the ones of the large spirals, and wherein the two extremities of the continuous path are loose such that the coupling device forms an open circuit. The pitches of the large spirals are chosen such as that the interturn stray capacitances is important and that the large spirals have mainly a capacitive behaviour. And the pitch of the small spiral is chosen such as that the interturn stray capacitances are negligible, and that the small spiral has mainly an inductive behaviour.

Abstract: The card (1), such as a credit card or other similar card, comprises at least a RFID chip module (3) and an antenna (4). The antenna (4) is interrupted in an interruption zone with two separated contact ends (5?,5?) and a contacting material (10) is placed in said interruption zone in order to enable a contact between said two separated ends (5?,5?). Said contacting material (10) becomes conductive under pressure so that the antenna is functional only when the contacting material (10) is put under pressure by a user.

Abstract: A support (1) has at a least one accommodation position (3) for removably accommodating an article (2) marked with a transponder (12) comprising a transponder chip (13) and an antenna (14) electrically connected to the chip. Each accommodation position comprises an inductive coupling unit (5) with a primary antenna (6) and a secondary antenna (7) connected in series and wherein the secondary antenna (7) is configured such that, when the accommodation position is accommodated with an article, the secondary antenna (7) is inductively coupled with the antenna (14) of the transponder.

Abstract: A contactless transponder unit is provided which comprises a chip module, a first antenna connected to two upper conductive contact zones of the chip module and a second antenna connected to two lower conductive contact zones of the chip module. The chip is configured in such a way as to operate the first antenna at a first frequency range and the second antenna at a second frequency range, the first frequency range being different than the second frequency range.