Radio frequency transceiver device

Abstract

The invention relates to a radio frequency transceiver device (1) comprising a non-conductive support (4) and a second antenna (3) made of an electrically conductive material, the second antenna (3) extending longitudinally in non-contiguous turns in or around the support (4) in such a way as to define an inner space of the second antenna (3). An electronic circuit (2), which is formed by a chip (2a) and a first antenna (2b) electrically connected to the chip (2a), is fully incorporated into the support (4) and is located in the inner space of the second antenna (3).

Description

Radiofrequency transmitting-receiving device FIELD OF THE INVENTION

[0001] The present invention relates to a radiofrequency transmission and reception device, such as an RFID tag. More particularly, the present invention relates to a radiofrequency transmission and reception device which can be flexible, i.e. capable of elastic deformation, and robust. Such a device finds an application in the field of labeling objects, and more particularly objects capable of deformation as is the case, for example, in the textile field or for objects formed from a deformable material such as rubber-based objects. TECHNOLOGICAL BACKGROUND OF THE INVENTION

[0002] Document WO2022171951 proposes a radiofrequency transceiver device comprising an electronic circuit (for example a transponder) formed of a chip, in particular an identification chip, and a first antenna electrically connected to the chip. This transponder is arranged directly or indirectly on a textile core yarn. A second antenna is arranged in non-contiguous turns around and along the textile core yarn. The first antenna and the second antenna are electromagnetically coupled. This radiofrequency transceiver device has a wire form factor, a deformable character (i.e. it conforms to tensile / bending and / or torsional stresses) and flexible character (i.e. it can bend and unbend) which forms very advantageous characteristics for its integration into certain products, such as textile or rubber-based products in particular.

[0003] As explained in the aforementioned document, the transponder has millimetric dimensions. When it is directly or indirectly attached to the textile core thread, it forms a protrusion of the radiofrequency transmission and reception device. This protrusion may be a hindrance in allowing the device to be handled, particularly when this handling is carried out by industrial equipment operating at high speed, for example to integrate the device into an electronic label, or to cover it, for example by wrapping, with a covering thread. It is possible that handling it at high speed could lead to the transponder being torn from the rest of the device or to the equipment becoming blocked.

[0004] To overcome this problem, it is possible to encapsulate the transponder, the textile core wire and the second antenna forming the radio frequency device in a protective material, for example by wrapping a covering wire, by any other form of sheathing of the device, by extrusion or coating of the protective material around this device, to make the assembly more robust and reduce the dimensions of the protuberance. However, to obtain a satisfactory result it is necessary to provide a significant thickness of protective material, of the order of magnitude at least of the millimeter dimensions of the transponder. This affects the wire form factor of the radio frequency device, its deformability and its flexibility. Finally, the encapsulation step itself can lead to deterioration of the device.

[0005] Documents WO2017135331, EP2405054 and EP4063544 propose a variety of radiofrequency transmission and reception devices, implementing a first antenna electrically connected to a transmission-reception chip and a second antenna coupled to the first antenna. SUBJECT OF THE INVENTION

[0006] An aim of the invention is to propose a radiofrequency transceiver device that remedies, at least in part, these problems. More specifically, an aim of the invention is to propose a radiofrequency transceiver device that is more robust than those of the prior art. Even more particularly, an aim of the invention is to propose a radiofrequency transceiver device comprising a transponder that does not form as large a protrusion as in known devices. Advantageously, in certain embodiments, the radiofrequency transceiver device has a wire form factor, deformable and flexible characteristics identical or close to those of the prior art. BRIEF DESCRIPTION OF THE INVENTION

[0007] With a view to achieving one of these aims, the subject of the invention proposes a radiofrequency transmission-reception device comprising: a non-conductive support; a second antenna made of an electrically conductive material, the second antenna extending longitudinally in non-contiguous turns, wound helically in or around the support to define an internal space of the second antenna; an electronic circuit formed of a chip and a first antenna electrically connected to the chip, the electronic circuit being entirely incorporated in the support and arranged in the internal space of the second antenna.

[0008] According to other advantageous and non-limiting characteristics of the invention, taken alone or in any technically feasible combination: the first antenna has a first axis, the second antenna has a second axis, the first axis and the second axis being parallel to each other; the chip and the first antenna are encapsulated in an insulating material; the support is a textile piece having a thickness, the second antenna being sewn, woven, braided or knitted in the thickness of the textile piece; the support is formed of a wire element and the second antenna is wound in non-contiguous turns around the wire element; the wire element is a sheath; the wire element is an extruded wire; the wire element is a ribbon wound on itself; the support is formed of a ribbon; the ribbon is formed of two portions assembled or folded over each other, the electronic circuit being arranged between the two ribbon portions;the radiofrequency transceiver device comprises a protective layer, the protective layer being formed of at least one covered covering wire, a braided or knitted textile sheath and / or a coating material.;

[0009] According to another aspect, the invention also relates to an electronic label comprising a radiofrequency transmission-reception device as described previously.

[0010] Other characteristics and advantages of the invention will emerge from the detailed description of the invention which follows with reference to the appended figures in which:

[0011]

[0012]

[0013]

[0014]

[0015] Figures 1, 2, 3, 4 each represent a radiofrequency transmission-reception device according to the invention;

[0016]

[0017] It represents an electronic chip of a radiofrequency transmission-reception device according to the invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] In a very general manner and as illustrated in figures 1, 2, 3 and 4, a radiofrequency transmission-reception device 1 which is the subject of the present description comprises an electronic circuit 2.

[0019] As illustrated in the, the electronic circuit 2 comprises a transceiver chip 2a and a first antenna 2b electrically connected to this chip 2a. It may be an identification chip, capable of holding an identifier and transmitting this identifier upon request from a remote interrogator. The chip 2a may implement any communication protocol, in any frequency range, for example an RFID or NFC protocol. Preferably, the first antenna is a magnetic antenna, with a near field. It may be formed of a coil, or more generally of a magnetic loop consisting of one or more turns. It may take the form of an integrated electronic component 2b. The first antenna has a first antenna axis a1, for example an axis oriented in the direction of the magnetic field generated or induced by the magnetic loop.

[0020] The chip 2a and the antenna 2b can be arranged on a substrate 2c having electrical connection tracks P, thus making it possible to electrically (galvanically) connect these two elements, in particular when the antenna 2b is in the form of an integrated electronic component. The support 2c can be flexible or rigid. It is also possible to connect these two components by "wire bonding". The chip 2a, the antenna 2b and, when present, the support 2c can be encapsulated in an insulating material 2d, for example a resin or a ceramic, so as to mechanically protect and electrically isolate the circuit 2. The electromagnetic properties of this insulating material (dielectric and magnetic permittivities) can be adapted to improve the performance of the device. The electronic circuit 2 is then in the form of a small and easily handled capsule.

[0021] Whether it is in the form of a capsule or not, the electronic circuit 2 has a very small size. Thus, and preferably, this circuit is inscribed in a parallelepiped whose height is typically between 0.5 and 2 mm, the width between 0.5 and 2 mm and the length between 4 mm and 15 mm, preferably less than 10 mm. These small dimensions allow it to be incorporated entirely into a support, as will be presented in a later section of this description, during or at the end of the manufacture of this support.

[0022] It is thus possible to provide for inserting the electronic circuit 2 into this support, in particular when it is in the form of a capsule, by means of an insertion tool, for example a pneumatic insertion tool such as a gun or a syringe. The tool has a reservoir in which the electronic circuit 2 can be arranged, the reservoir being fluidically connected to an insertion channel. The free end of the insertion channel can be introduced into the support at the insertion position of the electronic circuit and into the thickness of this support. This free end can have a pointed shape, giving the insertion channel the shape of a hollow needle, making it possible to pierce the support to place its end in its thickness. The reservoir can be pressurized to move the electronic circuit 2 into the insertion channel to which it is connected and expel it from the insertion channel to position it in the support.

[0023] Continuing the general description of the transceiver device 1, the latter also comprises a second antenna 3 formed from an electrically conductive material. The second antenna 3 is wound helically around or in the support and extends longitudinally in non-contiguous turns which define a space internal to the second antenna 3. The second antenna 3 may be formed from a flexible and / or supple wire or ribbon wound helically around or in the support, as will be presented in certain examples of implementation. The second antenna 3 is capable of undergoing deformations, without being damaged, in traction or in bending for example, due to the flexible and / or supple nature of the wire or ribbon and its helical winding. The conductive material forming the antenna may be made of copper or copper alloy (brass, bronze, cupro-nickel, silver-plated copper, etc.), steel, stainless steel, copper-plated steel, nickel, metallized fibers (silver-plated nylon).The wire or ribbon may be coated with a thin conductive material, typically less than 2 µm, to improve electrical conduction at the periphery by skin effect or to provide protection against chemical corrosion such as gold or silver. The conductive material may be coated with an insulating layer such as enamel to protect it chemically and mechanically. When the second antenna 3 is formed from a wire, this may be in the form of a wire of round or polygonal section, single-strand or multi-strand, or a strand. It advantageously has a diameter of less than 100 microns. When it is in the form of a ribbon, it has a thickness of less than 100 microns.

[0024] The second antenna has a length substantially equal to half a wavelength of the transmission frequency between the device 1 and the remote interrogator. For usual transmission frequencies, its linear length is therefore of the order of 4 to 20 cm. It should be noted that this second antenna has a much larger dimension than the first antenna.

[0025] As indicated in the prior art document cited in the introduction to this application, the second antenna 3 is preferably of an electrical nature, and typically constitutes a dipole antenna. By "dipole antenna" is meant any antenna capable of coupling to a remote interrogator by the electrical component of the electromagnetic field which propagates between these two elements, and not by means of an inductive magnetic field alone. This second antenna has a second axis a2 extending longitudinally in the winding direction of the non-contiguous turns.

[0026] In the transceiver device 1, the electronic circuit 2, comprising the first antenna 2a, is arranged in the internal space of the second antenna 3 and thus allows their electromagnetic coupling. The non-contiguous nature of the turns of the second antenna makes it possible to improve the inductance value of this winding, and therefore to promote this coupling. Typically, this involves arranging the electronic circuit 2 (which carries the first antenna) opposite the second antenna so that the first axis a1 and the second axis a2 are parallel to each other. Preferably, to promote the quality of the coupling, it will be sought to superimpose these two axes or to limit the distance separating them.

[0027] As a result of this electromagnetic coupling, the second antenna 3, of large relative size with respect to the first antenna 2b, is not electrically (galvanically) connected to the transceiver chip 2a as is the case in certain solutions of the state of the art. We therefore avoid welding or other mechanical connections between a relatively large antenna and the chip, this antenna being capable of transmitting the external forces which are exerted on the device at the level of these connections.

[0028] Finally, a radiofrequency transmission-reception device 1 according to the invention comprises a non-conductive support 4, which constitutes a retaining structure for the other elements of the device 1, the electronic circuit 2 and the second antenna 3.

[0029] According to an important characteristic of the radiofrequency transceiver device 1 which is the subject of the present description, the electronic circuit 2 is entirely incorporated in the support 4. It is not attached, directly or indirectly, to a wire element as is the case in a device according to the state of the art, to form a protuberance. It is therefore less likely to be torn off when handling the device 1, which makes the assembly very robust. The second antenna 3, for its part, can be arranged in the support 4 or around this support 4.

[0030] It is possible to provide protection for the transceiver device 1 by providing it with a protective layer. This protective layer may be formed from a coating material such as polyurethane or silicone. The coating layer may be formed by extrusion onto the transceiver device. Alternatively or in addition to this coating material, it may be a braided, knitted or covered textile sheath formed from a covered covering yarn.

[0031] As a reminder, in the conventional wrapping technique, a core yarn is pulled through a rotating hollow spool, the spool carrying the cover yarn. The core yarn passes through the hollow spool in a vertical direction, pulling it upwards or downwards. The cover yarn unwinds from the hollow spool to form a balloon that winds helically around the core in turns. It is common to wind a plurality of cover yarns around the core, for example by placing two hollow spools one above the other and passing the core through each of the spools rotating in the same direction or in opposite directions.

[0032] The principles which have just been set out can be implemented in several particular embodiments which are the subject of the remainder of this description, it being understood that all the characteristics described above can be incorporated into these different embodiments without it being necessary to specify this, for the sake of conciseness. First embodiment

[0033] In a first embodiment, shown in the, the support 4 is a textile piece and the second antenna 3 is arranged in this support, for example by sewing a conductive thread into the thickness of the textile piece, from one face to the other, to form the helical winding in non-contiguous turns. Alternatively, it is possible to provide for forming a support in the form of a three-dimensional textile piece, the second antenna 3 being able to be woven, braided or knitted into the thickness of the textile piece, during its manufacture. In all cases, the textile piece is formed from woven, braided or knitted textile threads. These textile threads can be of any nature, natural or synthetic, as long as they are not electrically conductive, so as not to disrupt the proper functioning of the second antenna 3.

[0034] The electronic circuit 2, for its part, is incorporated into the textile part, retained by the textile threads constituting this part, and arranged in the internal space defined by the winding in non-contiguous turns of the second antenna. The electronic circuit 2 can be placed in this position by means of the insertion tool as described in a previous section of this description, by introducing the insertion channel of this tool between two non-contiguous turns in the thickness of the textile part.

[0035] To manufacture a transceiver device 1 according to this embodiment, it is possible to form, in a textile piece having a large longitudinal dimension, the winding in non-contiguous turns of a conductive wire in this longitudinal direction. It is then possible to place, separated from each other by a predefined distance, the electronic circuits 2, in the thickness of the textile piece, in the internal space defined by the winding. The large textile piece can be cut into functional sections, each section comprising a sufficient number of non-contiguous turns to form the second antenna and an electronic circuit 2. Second embodiment

[0036] In this second embodiment, shown in the, the support 4 is formed from a ribbon. The term "ribbon" must here be interpreted according to its conventional definition, as a strip of flexible, narrow and long material. The second antenna 3 is wound helically in non-contiguous turns around this ribbon, which can contribute in certain cases to folding the ribbon on itself, or even to rolling it on itself, to give it a wire form factor. The electronic device 2 is incorporated in the ribbon or in a fold of the ribbon.

[0037] The ribbon may be formed from any suitable material, for example a textile material, woven or non-woven, obtained from natural fibers or synthetic fibers. It may be a polymer membrane, such as a plastic, a resin or a rubber. It may have a width typically between 2 mm and 1 cm, sufficient to incorporate the electronic circuit 2. Its length, which determines the length of the device 1, is typically between 5 and 10 cm. Its thickness is generally less than 1 mm. In all cases, the ribbon is flexible; in particular, it may fold back on itself to adopt a wire form factor, as will be explained in more detail in relation to the different implementation variants of this second embodiment.

[0038] Several implementation variants are possible to obtain the radiofrequency transceiver device 1 of this embodiment. According to a first variant, a very long ribbon is formed of two portions assembled one on top of the other. Electronic circuits 2 are arranged, spaced from each other, sandwiched between the two ribbon portions before these two portions are sealed to each other, by an adhesive material or by fusion. The ribbon portions can correspond to two independent portions or to two lateral parts of a very wide ribbon folded on itself in a longitudinal fold. In all cases, the electronic circuit 2 is incorporated in the ribbon. The very long ribbon, provided with the electronic circuits 2 is covered with a conductive wire, this conductive wire being intended to form the second antenna 3.For this purpose, the long ribbon is pulled through a hollow spool carrying the conductive wire, this wire being wound in non-contiguous turns around the long ribbon.

[0039] The tension of the ribbon running through the reels is controlled. When this tension is relatively low, the conductive wire, by winding around the very long ribbon, tends to fold it or wind it on itself to form a support which can then be in the form of a wire element, this element incorporating the electronic circuits 2 distributed along its length. When the tension of the ribbon is relatively high, it is not deformed by the conductive wire which is therefore wound by matching the opposite flat faces of the ribbon which preserves its original, flat shape.

[0040] Whether the ribbon 4 is held flat, folded or wound by the conductive wire, the device 1 has a generally elliptical section, therefore having a width (in width of the ribbon) greater than its height (in the thickness of the ribbon). Winding the second antenna on the ribbon 4 having a relatively large width, in comparison with a simple core wire, makes it possible to form a more compact device 1 (i.e. of smaller relative length), for a given antenna length. When the ribbon is folded or wound, and its form factor approaches a wire factor, the ribbon 4 forms a support for the winding whose density is relatively low. This characteristic makes it possible to preserve the flexibility of the ribbon and to avoid making the device excessively rigid.

[0041] In an alternative to this embodiment, the electronic circuits 2 are distributed over the surface of a very long ribbon, secured to this surface for example by means of a dot of glue. Then, as in the previous variant, the very long ribbon provided with the electronic circuits 2 is covered with a conductive wire intended to form the second antenna 3. The tension applied to the ribbon is controlled, so that the winding of the conductive wire tends to fold it back on itself, or even to wind it on itself and in this case form a support in the form of a wire element. The electronic circuits 2 are taken and entirely incorporated in the fold or the windings of the ribbon.

[0042] According to yet another variant, the very long ribbon is introduced into the wrapping equipment, pulled through a hollow reel carrying the conductive wire, without this ribbon having been provided with the electronic circuits 2 beforehand. The equipment is however provided with a means for inserting these circuits 2, these means being able to be an inclined gutter or a conduit opening precisely at the place of winding of the conductive wire on the ribbon, in the zone in which this ribbon folds or winds on itself. With the aid of the insertion means, the electronic circuits 2 can be inserted successively, so that they are placed in the fold or in the winding of the ribbon to be incorporated therein. The electronic circuits 2 are retained in by the fold or the winding of the ribbon.

[0043] In all variants of the modes of implementation of this second embodiment, the devices thus formed can be collected, at the outlet of the wrapping equipment, on a collection reel.

[0044] It is noted that the covering of the conductive wire may be accompanied by the simultaneous covering of at least one covering wire 5 or a plurality of covering wires 5. The equipment is then provided with a plurality of hollow reels arranged “in series” on top of each other, the reels respectively unwinding the conductive wire and the covering wire(s), the ribbon being driven to pass successively through these hollow reels.

[0045] Segments of the product recovered from the collection reel can be taken to obtain fully functional radiofrequency transmitting-receiving devices 1.

[0046] To preserve the integrity of the device 1, and more particularly to prevent the conductive wire 3 and any covering wires 5 from unwinding from the ribbon 4, or from fraying, the two ends of the device 1 are cauterized, that is to say that at least some of the fibers or, more generally, the material that composes the ribbon 4 and any covering wires are melted or sealed together to prevent this unwinding and / or fraying. Cauterization or sealing can be obtained by any suitable means, for example by locally raising the temperature of the device 1 at its ends and thus melting at least part of the material that composes them. This can in particular be obtained by applying ultrasound, by means of a sonotrode, as is well known, or by laser.It is also possible, instead of or in addition to this heat treatment, to coat the ends of the device with a resin to seal the fibers and materials together and thus cauterize them. Third embodiment

[0047] According to a third embodiment, shown in the, the support 4 is made of a sheath, for example a polymer sheath such as a heat-shrinkable plastic, or a textile sheath, for example braided from textile threads which may be made of nylon or a polymer material. This sheath therefore constitutes a flexible tubular body, the external wall of which may have a thickness typically between 0.3 mm and 0.6 mm. It has an internal diameter typically between 1.5 mm and 5 mm and in all cases sufficient to entirely contain the electronic circuit 2.

[0048] According to the invention, the electronic circuit 2 is entirely incorporated in the sheath, inside the tubular body defined by this sheath. The second antenna 3 extends longitudinally in non-contiguous turns around or in the sheath. The electronic circuit 2 is arranged in the internal space of the second antenna, defined by the longitudinal extension of the turns.

[0049] This embodiment lends itself well to collective manufacturing of transceiver devices, by using a large longitudinal sheath which is equipped with a conductive wire wound in non-contiguous turns and in which electronic circuits are placed, regularly distributed. A transceiver device in accordance with the invention is then formed by taking a segment of this product.

[0050] Again, this embodiment can be implemented using different approaches. When the sheath is of a textile nature, for example a sheath woven, braided or knitted from elementary textile threads, it can be provided that one of these elementary threads is conductive in order to directly integrate the antenna into the sheath, during its manufacture. In this case, care will be taken to ensure that this conductive thread is well wound in a non-contiguous turn. Electronic circuits 2 can be arranged in the sheath during this manufacturing step, one by one. These circuits 2 can be held in place by the pressure applied by the sheath which surrounds them. It can also be provided to fill the textile sheath, during its manufacture, with a bundle of textile threads or a cord forming stuffing, the electronic circuits 2 then being held in place by this stuffing.

[0051] The electronic circuits 2 can be placed in the support sheath, after the latter has been manufactured using insertion equipment such as that already described in a previous passage of this application.

[0052] When the sheath is in the form of a tubular polymer body, the electronic circuits can be placed in this sheath using the same insertion equipment. Preferably, this is equipped with an insertion channel having a free end in the form of a point, capable of piercing the polymer sheath before introducing the circuit inside this sheath.

[0053] Advantageously, the polymer constituting the sheath is chosen to be heat-shrinkable. In this case, the step of inserting the electronic circuit 2 is followed by a step of heating the area in which this circuit resides, for example by means of a linear oven crossed by the sheath. This heating will have the effect of making the sheath shrink onto the electronic circuit 2 in order to hold it in place. The heating temperature will be chosen to be sufficiently moderate, less than 250°C, to avoid damaging the electronic circuit 2.

[0054] Before or after this phase of preparation of the polymer sheath leading to the placement of electronic circuits 2 therein, and preferably after this phase, the antenna 3 is formed, for example by covering it with a wire or a conductive ribbon, as has already been presented in certain embodiments of other embodiments. Fourth embodiment

[0055] According to a fourth embodiment, shown in the, the support 4 corresponds to a polymer wire in which the electronic circuit 2 is incorporated, entirely coated with the polymer material. This polymer material can be of any nature, for example a plastic or rubber material. The second antenna 3 is arranged around this wire support incorporating the electronic circuit, for example by wrapping, in non-touching turns.

[0056] The polymer wire incorporating the electronic circuit 2 can be obtained by extrusion. As is well known per se, according to this technique, a viscous polymer solution is retained in a reservoir and injected by compression into a nozzle allowing the material to be stretched to form it into a wire, or more generally into an extrudate. In the context of the present description, the polymer is chosen so that it is sufficiently viscous and can form the extrudate at a temperature below 250°C so as not to risk damaging the electronic circuit 2. This circuit can be placed in the reservoir, mixed with the viscous polymer, close to the nozzle, in order to be injected into it with the polymer material and to be incorporated into the extrudate.

[0057] Alternatively, it is also possible to consider forming the polymer wire incorporating the electronic circuit 2 by additive manufacturing: by placing the electronic circuit 2 under one or more nozzle(s) of a 3D printer configured to produce such wire coating.

[0058] Just as in the previous embodiment, after this phase of preparing the polymer wire incorporating the electronic circuit 2, the antenna 3 is formed in a non-contiguous turn around the polymer wire, for example by wrapping a wire or a conductive ribbon.

[0059] Of course, the invention is not limited to the embodiments described and variant embodiments can be made without departing from the scope of the invention as defined by the claims.

[0060] Thus, a transmitting / receiving device which has been the subject of the present description can be incorporated directly into a product, for example a textile product such as clothing. But this device can find other fields of application than that of textiles, and it could be advantageous for the electronic labeling of any type of product, in particular those presenting a certain flexibility.

[0061] The device can be integrated directly, for example by weaving, embroidering or sewing it into a textile piece, particularly in embodiments in which the support has a wired form factor. But it can be integrated or coupled beforehand to a label to facilitate its integration into the product as described in document FR2002785.

[0062] The device can also be placed between two strips of raw rubber, with a view to its integration inside the structure of a tire (or any other elastomer product) during its manufacture, and in particular before the curing stage.

Claims

Radiofrequency transceiver device (1) comprising: a non-conductive support (4); a second antenna (3) made of an electrically conductive material, the second antenna (3) extending longitudinally in non-contiguous turns, wound helically in or around the support (4) to define an internal space of the second antenna (3); an electronic circuit (2) formed of a chip (2a) and a first antenna (2b) electrically connected to the chip (2a), the electronic circuit (2) being entirely incorporated in the support (4) and arranged in the internal space of the second antenna (3). Radiofrequency transmission-reception device (1) according to the preceding claim in which the chip (2a) and the first antenna (2b) are encapsulated in an insulating material (2d). Radiofrequency transmission-reception device (1) according to one of the preceding claims, in which the support (4) is a textile piece having a thickness, the second antenna (3) being sewn, woven, braided or knitted into the thickness of the textile piece. Radiofrequency transmission-reception device (1) according to one of claims 1 to 2 in which the support (4) is formed from a wire element and the second antenna (3) is wound in non-contiguous turns around the wire element (4). Radiofrequency transmission-reception device (1) according to the preceding claim in which the wire element is a sheath. Radiofrequency transceiver device (1) according to claim 4 wherein the wire element is an extruded wire. Radiofrequency transmission-reception device (1) according to claim 4 in which the wire element is a ribbon wound on itself. Radiofrequency transmission-reception device (1) according to one of claims 1 to 2 in which the support (4) is formed from a ribbon. Radiofrequency transmission-reception device (1) according to the preceding claim in which the ribbon is formed of two portions assembled or folded onto each other, the electronic circuit (2) being arranged between the two portions of ribbon. Radiofrequency transceiver device (1) according to one of the preceding claims comprising a protective layer, the protective layer being formed of at least one covered covering yarn, a braided or knitted textile sheath and / or a coating material. Electronic label comprising a radiofrequency transmission-reception device (1) according to one of the preceding claims.

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