Radio frequency transceiver device

Abstract

The present invention relates to a radio frequency transceiver device (1) comprising a non-conductive support (4) and a second antenna (3) made of a conductive material, the second antenna (3) extending longitudinally in or around the support (4) in discontinuous windings in such a manner that it defines the internal space of the second antenna (3). An electronic circuit (2) formed by a chip (2a) and a first antenna (2b) electrically connected to the chip (2a) is fully integrated into the support (4) and located in the internal space of the second antenna (3).

Description

Technical Field

[0001] The present invention relates to radio frequency transceiver devices such as RFID tags. More specifically, the present invention relates to radio frequency transceiver devices that can be flexible, i.e., can be elastically deformed and are robust. Such devices are applicable in the field of tagging objects, most specifically objects formed from deformable materials such as objects that are easily deformable or rubber-based objects, for example, in the case of the textile field.

Background Art

[0002] WO 2022 / 171951 proposes a radio frequency transceiver device comprising an electronic circuit (e.g., a transponder) formed by a chip, particularly an identification chip, and a first antenna electrically connected to the chip. This transponder is disposed directly or indirectly on a textile core fiber. The second antenna is disposed in a discontinuous winding around and along the textile core fiber. The first antenna and the second antenna are electromagnetically coupled. This radio frequency transceiver device has a filament shape factor, is deformable (i.e., conforms to tensile stress / flexural stress and / or torsional stress), and is flexible (i.e., can be bent or unfolded), all of which are very advantageous features for integration in specific products such as textile or rubber-based products.

[0003] As described in the aforementioned literature, the transponder has millimeter dimensions. When it comes into direct or indirect contact with the textile core fibers, it forms a protrusion on the radio frequency transceiver device. This protrusion can be a nuisance when handling the device, especially if this handling is done by industrial equipment operating at high speeds, for example, to integrate the device into an electronic tag or to coat the device by covering it with a covering fiber. High-speed handling can cause the transponder to detach from the rest of the device or jam the equipment.

[0004] To solve this problem, for example, the transponder, textile core fibers, and second antenna forming the device can be enclosed within a protective material by covering the radio frequency device with a covering fiber, by any other form of sheathing the device, or by extruding or encapsulating a protective material around the device, thereby making the assembly more robust and reducing the dimensions of protrusions. However, to obtain satisfactory results, it is necessary to provide the protective material with a considerable thickness, at least equivalent to the millimeter dimensions of the transponder. This affects the filament shape factor, deformability, and flexibility of the RF device. Ultimately, the encapsulation process itself can potentially cause damage to the device.

[0005] International Publication No. 2017135331, European Patent Publication No. 2405054, and European Patent Publication No. 4063544 propose various radio frequency transceiver devices that implement a first antenna electrically connected to a transceiver chip and a second antenna coupled to the first antenna. [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] One object of the present invention is to provide a radio frequency transceiver device that solves these problems at least partially. More specifically, one object of the present invention is to provide a radio frequency transceiver device that is more robust than those of the prior art. Even more specifically, one object of the present invention is to provide a radio frequency transceiver device having a transponder that does not form protrusions as large as those of known devices. Advantageously, in some embodiments, the radio frequency transceiver device has the same or similar filament shape factor, deformability, and flexibility as the prior art. [Means for solving the problem]

[0007] To achieve one of these objectives, the subject matter of the present invention is - Non-conductive support, - A second antenna made of a conductive material, the second antenna extending longitudinally in discontinuous windings in a manner that defines the internal space of the second antenna, and wound spirally within or around a support, - We propose a radio frequency transceiver device comprising an electronic circuit formed by a chip and a first antenna electrically connected to the chip, which is fully integrated into a support and located in the internal space of a second antenna.

[0008] According to other advantageous non-limiting features of the present invention, either alone or in any technically feasible combination, ● The first antenna has a first axis, and the second antenna has a second axis, and the first and second axes are parallel to each other. ● The chip and the first antenna are enclosed within an insulating material. ● The support is a textile component having thickness, and the second antenna is sewn, woven, twisted, or braided within the thickness of the textile component. ● The support is formed from fibrous elements, and the second antenna is wound around the fibrous elements with discontinuous windings. ● The fibrous element is the sheath. ● The fiber elements are extruded fibers. ● The fibrous element is a tape wound around itself. ● The support structure is formed by tape. ● The tape is formed by two parts that are joined or folded together, and the electronic circuit is placed between the two tape parts. ● The radio frequency transceiver device is equipped with a protective layer, which is formed of at least one coated covering fiber, twisted or woven textile sheath and / or encapsulating material.

[0009] In another embodiment, the present invention also relates to an electronic tag comprising the radio frequency transceiver device described above. [Brief explanation of the drawing]

[0010] Other features and advantages of the present invention will become apparent from the following detailed description of the invention with reference to the accompanying drawings. [Figure 1] This shows a radio frequency transceiver device according to the present invention. [Figure 2] This shows a radio frequency transceiver device according to the present invention. [Figure 3] This shows a radio frequency transceiver device according to the present invention. [Figure 4] This shows a radio frequency transceiver device according to the present invention. [Figure 5] This shows a microchip for a radio frequency transceiver device according to the present invention. [Modes for carrying out the invention]

[0011] In very general terms, as shown in Figures 1, 2, 3, and 4, the radio frequency transceiver device 1, which is the subject of this specification, comprises an electronic circuit 2.

[0012] As shown in Figure 5, the electronic circuit 2 comprises a transceiver chip 2a and a first antenna 2b electrically connected to the chip 2a. The electronic circuit may include an identification chip that holds an identifier and can transmit this identifier in response to a request from a remote interrogator. The chip 2a can implement any communication protocol, such as RFID or NFC, at any frequency gem. Preferably, the first antenna is a near-field magnetic antenna. This antenna may be formed from a coil, or more generally, a magnetic loop consisting of one or more windings. This antenna may take the form of an integrated electronic component 2b. The first antenna has a first antenna axis a1, for example, an axis oriented along the direction of the magnetic field generated or induced by the magnetic loop.

[0013] The chip 2a and antenna 2b can be disposed on a substrate 2c having an electrical connection track P, and thus, especially if the antenna 2b is in the form of an integrated electronic component, these two elements can be electrically (DC) connected. The support 2c can be flexible or rigid. These two components can also be connected by wire bonding. The chip 2a, antenna 2b, and support 2c, if present, can be encapsulated in an insulating material 2d, for example, resin or ceramic, to mechanically protect the circuit 2 and electrically insulate it. The electromagnetic properties (dielectric constant and magnetic permeability) of this insulating material can be adapted to improve the performance of the device. The electronic circuit 2 takes the form of a small, easy-to-handle capsule.

[0014] Whether in capsule form or not, the electronic circuit 2 is very small in size. Therefore, preferably, the circuit is inscribed within a parallelepiped that is typically 0.5–2 mm high, 0.5–2 mm wide, and 4–15 mm long, preferably less than 10 mm long. As will be presented in later sections of this specification, these reduced dimensions allow the entire electronic circuit to be incorporated into the support during or at the end of the manufacturing process.

[0015] In this way, the electronic circuit 2 can be inserted into the support, particularly when the support is in the form of a capsule, by an insertion device, such as a pneumatic insertion tool like a gun or syringe. The tool features a reservoir into which the electronic circuit 2 can be positioned, and the reservoir is fluidly connected to an insertion channel. The free end of the insertion channel can be inserted into the support at the insertion position of the electronic circuit and within the thickness of the support. This free end may have a pointed shape, giving the insertion channel the shape of a hollow needle, allowing it to penetrate the support and position its end within its thickness. The reservoir can be pressurized to move the electronic circuit 2 into the insertion channel into which it is connected, and the electronic circuit can be ejected from the insertion channel and positioned within the support.

[0016] Continuing with the general description of the transceiver device 1, the transceiver device 1 also includes a second antenna 3 formed from a conductive material. The second antenna 3 is spirally wound around or within a support and extends longitudinally with discontinuous windings that define an internal space within the second antenna 3. As shown in some implementation examples, the second antenna 3 can be formed by a soft and / or flexible fiber or tape spirally wound around or within the support. Due to the soft and / or flexible nature of the fiber or tape and its spiral winding, the second antenna 3 can be deformed without causing damage, for example, in tension or bending. The conductive material forming the antenna can be made from copper or copper alloys (brass, bronze, cupronickel, silver-plated copper, etc.), steel, stainless steel, copper-plated steel, nickel, metallized fibers (silver-plated nylon). The fiber or tape can typically be coated with a conductive material having a thickness of less than 2 μm to improve electrical conduction at the periphery due to the skin effect or to provide protection against chemical corrosion such as gold against silver. The conductive material can be coated with an insulating layer such as enamel to provide chemical and mechanical protection. When the second antenna 3 is formed from a fiber, it can take the form of a single-strand fiber or multi-strand fiber, or a stranded wire, with a circular cross-section or a polygonal cross-section. Advantageously, it has a diameter of less than 100 microns. In the case of tape form, it has a thickness of less than 100 microns.

[0017] The second antenna has a length substantially equal to half the wavelength of the transmission frequency between the device 1 and the remote interrogator. Thus, for normal transmission frequencies, its straight-line length is on the order of 4 to 20 cm. Note that the size of this second antenna is much larger than that of the first antenna.

[0018] As shown in the prior art documents cited at the beginning of this application, the second antenna 3 is preferentially of an electrical nature and is typically a dipole antenna. A "dipole antenna" means any antenna that can be coupled to the remote interrogator device by the electrical component of the electromagnetic field propagating between these two elements rather than only through the inductive magnetic field. This second antenna has a second axis a2 that extends longitudinally along the discontinuous winding direction of the winding.

[0019] In the transceiver device 1, the electronic circuit 2 including the first antenna 2a is disposed in the internal space of the second antenna 3, thus enabling their electromagnetic coupling. The discontinuous feature of the winding of the second antenna improves the inductance value of this winding and thus enables the promotion of this coupling. Typically, it includes disposing the electronic circuit 2 with respect to the second antenna (carrying the first antenna) such that the first axis a1 and the second axis a2 are parallel to each other. Preferably, in order to improve the coupling quality, it is required to overlap these two axes or limit the distance separating them.

[0020] As a result of this electromagnetic coupling, the second antenna 3, which is relatively large in size with respect to the first antenna 2b, is not electrically (DC) connected to the transceiver chip 2a as in some solutions in the prior art. Thus, welding or other mechanical connections between the relatively large antenna and the chip are avoided, and this antenna can transmit the external force applied to the device in these connections.

[0021] Finally, the radio frequency transceiver device 1 according to the present invention includes a non-conductive support 4 that constitutes a holding structure for the device 1, the electronic circuit 2, and other elements of the second antenna 3.

[0022] According to the key features of the radio frequency transceiver device 1 described herein, the electronic circuit 2 is fully integrated into the support 4. This is because it is not directly or indirectly attached to fibrous elements to form protrusions, as in the case of devices of the prior art. Therefore, it is less likely to be torn when handling device 1, and the entire assembly is very robust. The second antenna 3 can be positioned within or around the support 4.

[0023] The transceiver device 1 can be protected by a protective layer. This protective layer can be formed from a coating material such as polyurethane or silicone. The coating layer can be formed on the transceiver device by extrusion molding. Alternatively, or in addition to this coating material, the textile sheath can be twisted, braided, or formed from coated fibers.

[0024] In conventional coating techniques, core fibers are drawn out through a rotating hollow coil, which then supports the coating fibers. The core fibers pass vertically through the hollow coil by pulling it upward or downward. The coating fibers are unwound from the hollow coil and spirally wound around the core to form a winding. For example, it is common to arrange two hollow coils one above the other and circulate the core through each coil, which is driven to rotate in the same or opposite direction, thereby winding multiple coating fibers around the core.

[0025] The principles described above can be implemented in many specific embodiments, which are the subject of the remainder of this specification. However, for the sake of brevity, it will be understood that all the features described above can be incorporated into these different embodiments without needing to explicitly state them.

[0026] First Embodiment In the first embodiment shown in Figure 1, the support 4 is a textile component, and the second antenna 3 is disposed within this support by, for example, sewing conductive fibers from one side to the other within the thickness of the textile component to form a discontinuous spiral. Alternatively, the support can be formed in the form of a three-dimensional textile component, thereby allowing the second antenna 3 to be woven, twisted, or braided into the thickness of the textile component during manufacturing. In either case, the textile component is composed of woven, twisted, or braided textile fibers. These textile fibers can be of any type, natural or synthetic, as long as they are not conductive, so as not to interfere with the proper operation of the second antenna 3.

[0027] With respect to the electronic circuit 2, it is incorporated into the textile component and held in place by the textile fibers that constitute this component, and is disposed in an internal space defined by the winding of the second antenna of the discontinuous winding. The electronic circuit 2 can be positioned in this location by inserting the insertion channel of the insertion tool described in a previous section of this specification between the two discontinuous windings within the thickness of the textile component.

[0028] To manufacture the transceiver device 1 according to this embodiment, a textile component having a large longitudinal dimension can be formed by winding conductive fibers in discontinuous windings along this longitudinal direction. The electronic circuits 2 can then be arranged within the thickness of the textile component in the internal space defined by the windings, spaced apart from each other by a predetermined distance. The large textile component can be cut into functional sections, each section containing a sufficient number of discontinuous windings to form a second antenna and the electronic circuits 2.

[0029] Second Embodiment In the second embodiment shown in Figure 2, the support 4 is made of tape. Hereinafter, the term “tape” is interpreted, according to its conventional definition, as a long, narrow strip of flexible material. The second antenna 3 is spirally wound around this tape in discontinuous windings, and in some cases, can fold the tape over itself, and even assist in winding the tape over itself, thereby providing a filament shape factor. The electronic device 2 is incorporated into the tape or the weave of the tape.

[0030] The tape can be made of any suitable material, for example, a woven or nonwoven textile material obtained from natural or synthetic fibers. This could be a plastic, resin, or rubber polymer film. The width of the tape is typically 2 mm to 1 cm, which is sufficient to incorporate the electronic circuit 2. The length of the tape, which determines the length of device 1, is typically 5 to 10 cm. The thickness of the tape is generally less than 1 mm. In any case, the tape is flexible and can be folded over itself to take on a filament shape factor, particularly as will be described in more detail in relation to the various implementation modifications of this second embodiment.

[0031] The radio frequency transceiver device 1 of this embodiment can be implemented in several different ways. In a first modification, the elongated tape is formed by two parts joined together. Before these two parts are sealed together, the electronic circuit 2 is sandwiched and separated between the two tape parts by either adhesive or fusion. The tape parts may correspond to two independent parts or to two outer parts of a wide tape folded over itself according to a longitudinal fold. In either case, the electronic circuit 2 is incorporated into the tape. The elongated tape having the electronic circuit 2 is covered with conductive fibers and used to form a second antenna 3. For this purpose, the elongated tape is drawn through a hollow coil carrying the conductive fibers, which are wound around the elongated tape in discontinuous windings.

[0032] The tension of the tape passing through the coil is controlled. When this voltage is relatively low, the conductive fibers tend to fold the long tape or wrap around themselves by winding themselves around the long tape, forming a support, which can then take the form of fibrous elements, each incorporating an electronic circuit 2 distributed along its length. When the tension of the tape is relatively high, the tape is not deformed by the conductive fibers, and therefore the conductive fibers themselves wrap around the opposite flat surface of the tape, maintaining its original flat shape.

[0033] Whether the tape 4 is held flat, folded, or wound by conductive fibers, the device 1 generally has an elliptical cross-section, so its width (within the range of the tape width) is greater than its height (within the range of the tape thickness). By winding a second antenna onto a relatively wide tape 4, it is possible to form a more compact (i.e., relatively shorter) device 1 for a given antenna length compared to a simple core fiber. When the tape is folded or wound and its shape factor is close to the filament factor, the tape 4 forms a winding support with a relatively low density. This feature maintains the flexibility of the tape and avoids making the device excessively rigid.

[0034] Alternatively, the electronic circuit 2 is distributed across the surface of the long tape and adhered to the surface, for example, by adhesive spots. Then, as in the modified example described above, the long tape having the electronic circuit 2 is covered with conductive fibers to form a second antenna 3. The tension applied to the tape is controlled so that the winding of the conductive fibers tends to fold the tape over itself, or even wrap around itself, in which case a support in the form of fibrous elements is formed. The electronic circuit 2 is completely incorporated within the folds or windings of the tape.

[0035] In yet another variation, the long tape is supplied to a packaging machine and threaded through a hollow coil carrying conductive fibers, without the long tape being pre-mounted with the electronic circuit 2. However, the machine is provided with means for inserting these circuits 2, which may be inclined grooves or ducts that precisely open at the points where the conductive fibers are wound onto the tape within the area where the tape is folded or wound over itself. Using the insertion means, the electronic circuits 2 can be inserted continuously, thereby positioning the electronic circuits within the folds or windings of the tape into which they are incorporated. The electronic circuits 2 are held in place by the folding or winding of the tape.

[0036] In all modifications of this second embodiment, the device thus formed can be collected on a collection coil at the output port of the coated device.

[0037] It should be noted that the coating of the conductive fibers may involve the simultaneous coating of at least one coating fiber 5 or multiple coating fibers 5. The device is then fitted with a plurality of hollow coils arranged in "series" stacked vertically, with each coil unwinding the conductive fibers and coating fibers, and the tape is driven to run continuously through these hollow coils.

[0038] By removing the collected product segments from the collection coil, a fully functional radio frequency transceiver device 1 can be manufactured.

[0039] To maintain the integrity of device 1, and more specifically to prevent the conductive fibers 3 and optional coating fibers 5 from unraveling or fraying from tape 4, both ends of device 1 are cauterized, that is, at least a portion of the fibers, more generally, the material constituting tape 4 and optional coating fibers, is melted or sealed together to prevent this unraveling or fraying. Cauterization or sealing can be achieved in any preferred manner, for example, by locally increasing the temperature of the ends of device 1, thereby melting at least a portion of the material constituting the ends. In particular, this can be achieved by applying ultrasound through a well-known sonotrode or by a laser. Alternatively, or in addition to this heat treatment, the ends of the device can be coated with a resin to seal the fibers and material together, and thus cauterize them.

[0040] Third Embodiment According to the third embodiment shown in Figure 3, the support 4 consists of a sheath, which is, for example, a polymer sheath such as heat-shrinkable plastic, or a textile sheath twisted together from textile fibers that can be made of nylon or a polymer material. Thus, this sheath constitutes a flexible tubular body, the outer wall of which may typically be 0.3 mm to 0.6 mm thick. Its inner diameter is typically 1.5 mm to 5 mm, which in any case is sufficient to completely house the electronic circuit 2.

[0041] According to the present invention, the electronic circuit 2 is completely incorporated within the sheath, inside the tubular body defined by the sheath. The second antenna 3 extends longitudinally around or inside the sheath with discontinuous windings. The electronic circuit 2 is disposed within the internal space of the second antenna, defined by the longitudinal extension of the windings.

[0042] This method is suitable for the collective manufacturing of transceiver devices in which the electronic circuitry is evenly distributed, using a sheath with large longitudinal dimensions and conductive fibers wound in discontinuous windings. The transceiver device according to the present invention is formed by sampling a segment of this product.

[0043] In this case as well, there are various approaches to this type of implementation. If the sheath is essentially textile, for example, if the sheath is woven, twisted, or braided from basic textile fibers, one of these basic fibers can be made conductive during the manufacturing of the sheath, and the antenna can be directly integrated into the sheath. In this case, care must be taken to ensure that the conductive fiber is wound in discontinuous windings. The electronic circuits 2 can be sequentially arranged within the sheath during this manufacturing process. These circuits 2 can be held in place by the pressure applied by the surrounding sheath. Alternatively, in the manufacturing method, the textile sheath can be filled with a cord that forms a bundle or padding of textile fibers, and this padding can hold the electronic circuits 2 in place.

[0044] The electronic circuit 2 can be placed in the sleeve forming the support after the support has been manufactured, using an insertion device as already described in the preceding section of this application.

[0045] If the sheath is in the form of a tubular polymer body, the same insertion device can be used to place an electronic circuit within this sheath. Preferably, the insertion device is equipped with an insertion channel featuring a pointed free end, which is suitable for penetrating the polymer sheath before inserting the circuit into the interior of the sheath.

[0046] Advantageously, the polymer constituting the sheath is selected to be heat-shrinkable. In this case, the step of inserting the electronic circuit 2 is followed by a step of heating the region where the circuit is located, for example, by a linear furnace through which the sheath passes. This heating has the effect of shrinking the sheath covering the electronic circuit 2 and holding it in place. The heating temperature is selected to be a sufficiently mild temperature of less than 250°C to avoid damage to the electronic circuit 2.

[0047] Before or after the step of preparing the polymer sheath, which leads to the placement of the electronic circuit 2 inside the polymer sheath, preferably after this step, the antenna 3 is formed by covering it with, for example, fibers or conductive tape, as already shown in the specific implementation modes of other embodiments.

[0048] Fourth Embodiment According to the fourth embodiment shown in Figure 4, the support 4 is a polymer fiber into which an electronic circuit 2, completely encapsulated within the polymer material, is embedded. This polymer material can be of any type, for example, plastic or rubber. The second antenna 3 is arranged around this fibrous support incorporating the electronic circuit, for example, by wrapping it with discontinuous windings.

[0049] Polymer wires incorporating the electronic circuit 2 can be obtained by extrusion molding. As is well known, in this technique a viscous polymer solution is held in a reservoir and injected into a nozzle by compression, allowing the material to be stretched to form fibers, or more generally, an extruded product. In the context of this specification, the polymer is selected to have sufficient viscosity and to allow the extruded product to be formed at a temperature of less than 250°C in order to avoid damage to the electronic circuit 2. The circuit can be mixed with the viscous polymer near the nozzle and placed in a reservoir, so that it can be injected into the nozzle together with the polymer material and incorporated into the extruded product.

[0050] Alternatively, polymer fibers incorporating the electronic circuit 2 can also be formed by additive manufacturing, i.e., by placing the electronic circuit 2 under one or more nozzles of a 3D printer configured to produce such fiber coatings.

[0051] As in the exemplary embodiment described above, after the preparation step of the polymer fiber incorporating the electronic circuit 2, the antenna 3 is formed by covering the polymer fiber with discontinuous windings, for example, with fiber or conductive tape.

[0052] Naturally, the present invention is not limited to the embodiments described, and alternative embodiments may be added without departing from the scope of the invention as defined by the claims.

[0053] Therefore, the transceiver device, which is the subject of this specification, can be directly incorporated into products, such as textile products like clothing. However, this device can find applications in fields other than textiles and may be advantageous for electronically tagging any type of product, especially products with a certain degree of flexibility.

[0054] In particular, in embodiments where the support has a filament shape factor, the device can be directly integrated, for example, by weaving, embroidering, or sewing it into a textile component. However, as described in French Patent Application No. 2002785, the device can be pre-integrated or bonded to the tag to facilitate the integration of the tag into the product.

[0055] The device can also be placed between two strips of raw rubber, particularly before the curing stage, for integration into the tire structure (or any other elastomer product) during manufacturing.

Claims

1. A radio frequency transceiver device (1), - Non-conductive support (4), - A second antenna (3) made of a conductive material, the second antenna (3) extending longitudinally in discontinuous windings in such a manner as to define the internal space of the second antenna (3), and wound spirally inside or around the non-conductive support (4), - An electronic circuit (2) formed by a chip (2a) and a first antenna (2b) electrically connected to the chip (2a), the electronic circuit (2) being fully integrated into the nonconductive support (4) and located in the internal space of the second antenna (3), A radio frequency transceiver device (1) comprising:

2. The chip (2a) and the first antenna (2b) are enclosed within an insulating material (2d). The radio frequency transceiver device (1) according to claim 1.

3. The non-conductive support (4) is a textile component having thickness, and the second antenna (3) is sewn, woven, twisted, or knitted within the thickness of the textile component. A radio frequency transceiver device (1) according to claim 1 or 2.

4. The non-conductive support (4) is formed of fibrous elements, and the second antenna (3) is wound around the fibrous elements (4) in discontinuous windings. A radio frequency transceiver device (1) according to claim 1 or 2.

5. The aforementioned fiber element is a sheath. The radio frequency transceiver device (1) according to claim 4.

6. The aforementioned fiber element is an extruded fiber. The radio frequency transceiver device (1) according to claim 4.

7. The aforementioned fibrous element is a tape wound around itself. The radio frequency transceiver device (1) according to claim 4.

8. The non-conductive support (4) is made of tape, A radio frequency transceiver device (1) according to claim 1 or 2.

9. The tape is formed by two parts that are joined or folded together, and the electronic circuit (2) is disposed between the two tape parts. The radio frequency transceiver device (1) according to claim 8.

10. A protective layer is provided, the protective layer being formed of at least one covered covering fiber, a twisted or woven textile sheath, and / or an enclosing material. A radio frequency transceiver device (1) according to any one of claims 1 to 9.

11. An electronic tag comprising a radio frequency transceiver device (1) according to any one of claims 1 to 10.

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