Disclosed is an electronic document, such as an integrated circuit card, that includes a body having a cavity that opens into one of the faces of the body and is defined by walls. The body also includes: an antenna having at least one turn extending between two ends that terminate in a wall of the cavity, a module including a microprocessor and at least two connection terminals dedicated to the antenna and electronically connected by electrical connections firstly to the microprocessor and secondly to the ends of the antenna. The ends of the antenna are arranged in zigzag shapes and each of them is made up of at least two rectilinear portions that are connected together by a bend and in which the rectilinear portion terminating in the cavity is at an angle of inclination relative to the wall at which it terminates.

A method for manufacture of an electronic interface card including defining a pair of apertures in a substrate layer, associating an antenna with the substrate layer such that opposite ends of the antenna terminate at the apertures, placing a metal element in each of the apertures, connecting the ends of the antenna to the metal elements, laminating the substrate layer together with a top layer and a bottom layer, forming a recess in the top layer and the substrate layer, attaching ends of connection wires to the metal elements, attaching opposite ends of the connection wires to a chip module and sealing the chip module in the recess.

The invention concerns a method for producing a flexible circuit for a chip card module. The invention consists of using conductive pads located on the same face of the module as the contacts intended to establish a connection with a card reader, in order to produce an electrical connection between an antenna and an electronic chip. The connections with conductive pads are located partly inside an encapsulation area and partly outside said encapsulation area and respectively to either side of same. The invention also relates to a flexible circuit for implementing this method.

An electronic module for a smart card has on a first face a terminal block of electrical contacts for contact with corresponding contacts of a card reader, and on a second face an antenna and a microelectronic chip within an encapsulation zone and provided with contact and contactless communication interfaces. The antenna has a plurality of turns at the periphery of the module and a proximal connection pad and a distal connection pad inside the encapsulation zone for connection to corresponding terminals of the contactless communication interface. The distal connection pad is located a short distance d from the edge of the encapsulation zone, and the internal edges of connection wells of the two contacts closest to the distal connection pad are spaced outward from the module relative to the internal edges of the connection wells of the other contacts.

An RFID tag is provided that includes an insulator film, an antenna with an antenna conductor pattern disposed on the insulator film, and an RFIC module mounted on the insulator film. The RFIC module includes an RFIC and an impedance matching circuit. The impedance matching circuit includes a first coil and a second coil. Main planes of magnetic flux loops generated in the vicinities of the first coil and the second coil by the antenna are not parallel to main planes of magnetic flux loops generated in the first coil and the second coil.

A process for manufacturing an electronic module intended to be implemented in a dual-interface portable object is provided. The process includes at least the following steps: Using a single-sided film consisting of one or more contact regions and a dielectric comprising one or more apertures, Using a substrate comprising one or more electrically conductive regions intended for the contactless communication of the object, Securing said single-sided film and said substrate together, Positioning an integrated circuit and connecting it to the contact regions of the single-sided film and at least to one terminal of at least one of said electrically conductive regions, Depositing a protective layer incorporating at least said integrated circuit.

Also provided is a module obtained by means of the process.

An RFID tag includes a circuit board, an RFID IC and a functional module. The circuit board has an antenna conductor. The RFID IC is mounted on the circuit board. The functional module is connected to the circuit board through a lead wire. An electrical length of a connection wiring that electrically connects the functional module to an element on the circuit board is within ±10% of an integral multiple of a half wavelength of a radio signal that the RFID IC transmits or receives.

Electrical circuit for a smart card chip module, including an insulating layer having a front main face and a rear main face. An antenna is made in a first conductive layer laying on the rear main face. This antenna extends over an antenna area delimited by a peripheral edge. The antenna includes at least one inner loop and one outer loop. The outer loop runs along the peripheral edge except over at least one first connecting segment diverted from the peripheral edge, towards or in a central zone of the antenna area. Further, the outer loop of the antenna includes at least a second connecting segment diverted from the peripheral edge towards a central zone of the antenna area.

A method of forming a contactless transaction card. The method may include providing a card body, defining a window, and attaching an antenna assembly layer to the card body, where the antenna assembly layer includes an antenna, a set of curable connectors, disposed on a set of end regions of the antenna within the window, and a UV-transparent layer, supporting the antenna. The method may include providing a contactless chip module within the window on a first side of the antenna assembly layer, and directing radiation through the UV-transparent layer, wherein the contactless chip module is electrically connected to the antenna via the curable connectors.

A transaction card for dual interface communication of a transaction includes a card body, a chip opening, a discontinuity, and a transponder chip. The card body includes a first metal layer having an outer peripheral edge, a first metal face, and a second metal face. The chip opening includes a first chip hole transversely extending from the first metal face toward the second metal face thereby defining a first metal edge surrounding a predetermined hole shape. The discontinuity extends from the outer peripheral edge to the first metal edge. The transponder chip module has a module antenna and is configured to be received within the chip opening. The module antenna defines an outer antenna edge surrounding a predetermined antenna shape such that the predetermined antenna shape is the same as the predetermined hole shape for improved inductive coupling via the discontinuity during use.