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EP1721288A1 - Passive transmitter receiver device fed by an electromagnetic wave - Google Patents

Passive transmitter receiver device fed by an electromagnetic wave

Info

Publication number
EP1721288A1
EP1721288A1 EP05717448A EP05717448A EP1721288A1 EP 1721288 A1 EP1721288 A1 EP 1721288A1 EP 05717448 A EP05717448 A EP 05717448A EP 05717448 A EP05717448 A EP 05717448A EP 1721288 A1 EP1721288 A1 EP 1721288A1
Authority
EP
European Patent Office
Prior art keywords
loop
antenna
electromagnetic wave
electronic chip
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05717448A
Other languages
German (de)
French (fr)
Inventor
Jean-Marc Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pygmalyon
Original Assignee
Pygmalyon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pygmalyon filed Critical Pygmalyon
Publication of EP1721288A1 publication Critical patent/EP1721288A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07758—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/59—Responders; Transponders

Definitions

  • the present invention relates to a passive receiver-transmitter device supplied by an electromagnetic wave carrying information.
  • the operation of such devices is based on an induction transmission between, on the one hand, a card or a label having a loop-shaped antenna whose ends are connected to an electronic chip present on the card or the label, and d on the other hand, a terminal capable of transmitting and receiving an electromagnetic wave carrying information.
  • the antenna of the card or label picks up the electromagnetic wave emitted by the terminal and transmits the information to the chip which processes it before possibly sending a response re-emitted by the antenna and which will be picked up by the terminal.
  • the latter can read and / or modify the information stored on the card.
  • RFID radio frequency identification device
  • a first solution consists in placing several terminals so as to cover the maximum of the possible orientations of the antenna. This solution is costly and requires complex IT management of the various terminals in order to avoid double validations if the object to be detected is in motion.
  • Another solution consists in placing a label containing a transponder electronic chip on each side of the object to be detected so as to cover the three possible directions of incidence of the magnetic field emitted by the terminal.
  • the field will in all cases be captured by at least one label.
  • it wishes to modify the information concerning the object, recorded on the chip, it will be necessary to modify the chips of all the labels of the object. All the labels of the same object do not necessarily capture the electromagnetic wave, such an update of the chips is difficult to envisage.
  • Document FR 2 812 427 describes another solution, in which an antenna is deployed on several separate adhesive supports each comprising a winding arranged in a particular plane, the windings being arranged at a distance to avoid disturbance of a winding with respect to a other winding.
  • This device is satisfactory for a final installation on a bulky object of the pallet type. However, it does not allow the use of a support of reduced size, less than a meter and a fortiori to 50 cm, easily applicable on an object or portable by an individual. In addition, this antenna does not allow detection along a plane perpendicular to the pallet.
  • the present invention aims to remedy the drawbacks mentioned above, and for this consists of a receiver device- passive transmitter powered by an electromagnetic wave having an antenna comprising a loop associated with a transponder electronic chip, this loop being able, on the one hand, to supply the electronic chip with an induced current generated when it is crossed by a first electromagnetic wave carrying information, and on the other hand, to emit a second electromagnetic wave carrying the response of the electronic chip, characterized in that the antenna is designed so that the loop comprises at least two non-coplanar or non-parallel parts in position of use. In this way, the antenna has a total non-planar reception surface, and is therefore capable of picking up electromagnetic waves in several directions.
  • the antenna will be able to pick up waves whose magnetic field has at least one component oriented substantially perpendicular to a portion of the antenna.
  • antenna designates the entire part of the radio system designed to radiate or receive waves.
  • the loop comprises at least two parts situated in substantially perpendicular planes. This configuration makes the device particularly suitable for tracking parcels or packages.
  • the loop is intended to be arranged in two planes substantially perpendicular to each other.
  • the loop is intended to be positioned in three planes substantially perpendicular to each other.
  • the antenna covers the three directions of space and can therefore pick up electromagnetic waves regardless of their orientation.
  • the antenna is integrated in a support intended to be glued on several sides of the same object.
  • the support is produced in the form of a self-adhesive label.
  • the antenna comprises a loop produced in the form of an open cylindrical bracelet, obtained from a flat support constituted by a flexible strip.
  • the antenna comprises a closed circular loop made from a spiral wire.
  • the loop has a diameter of between 4 and 10 cm.
  • FIG. 1 is a schematic view of a package on which a device according to a first embodiment is stuck realization of the invention.
  • Figure 2 is an enlarged schematic view of the device glued to the package shown in Figure 1.
  • Figure 3 is a schematic view of the device of Figure 2 before bonding to the package.
  • Figure 4 shows schematically the arrangement of the loop of the device of Figure 1.
  • Figure 5 is a curve showing the variation of the resonant frequency as a function of the distance from the loop to a corner of the packet around which the device Figure 1 is folded.
  • Figure 6 shows a variant of the device of Figure 3.
  • Figure 7 is a schematic view of a strip, comprising a device according to the second embodiment of the invention, before shaping.
  • Figure 8 is a schematic view of the strip shown in Figure 7, after shaping around a cylinder.
  • Figure 9 is a curve showing the variation of the resonant frequency as a function of the diameter of the cylinder of Figure 8.
  • Figure 10 is a schematic top view of a device according to the third preferred embodiment of the invention.
  • Figure 11 is a schematic perspective view of the device shown in Figure 10, placed around a cylinder.
  • FIG. 12 is a curve representing the variation of the resonant frequency as a function of the diameter of the cylinder shown in FIG. 10.
  • Figure 13 is a schematic perspective view of a device according to a fourth preferred embodiment of the invention.
  • Figure 14 is a schematic perspective view of a device according to a fifth preferred embodiment of the invention.
  • Figure 15 is a schematic perspective view of a device according to a sixth preferred embodiment of the invention.
  • a parallelepipedic package 1 as represented in FIG. 1, has eight corners 2, each corner 2 being delimited by three faces 3, 4, 5 perpendicular to each other.
  • a device 6 according to a first embodiment of the invention is glued to a corner 2 so as to be in contact with the three faces 3, 4, 5, as shown in FIG. 2. To do this, the device 6 is present in the form of a flat label, represented in FIG. 3, comprising an adhesive support 7 in the form of a square made of a pliable flexible material such as paper or a polymer film.
  • a conductive wire 8, having two ends, is deposited on the periphery of the support 7 so as to form a loop also having a square shape.
  • the conductive wire 8 can be secured to the support 7 or not.
  • the loop can also be produced in the form of a conductive track obtained by metallic deposition or from a conductive ink.
  • the ends of the wire 8 are connected to the supply terminals of an electronic chip 9 transponder.
  • Such an electronic chip 9 is known per se and is of the type used for RFID, intended to operate at frequencies above 10 MHz, generally 13.56 MHz, and whose operating standards are mainly set by ISO standards.
  • the electronic circuit comprising, on the one hand, the conductive wire 8 forming a loop, and on the other hand, the electronic chip 9 transponder, is designed so as to form a resonator whose loop constitutes the antenna.
  • This type of circuit is also known.
  • the antenna is made in such a way that the resonant frequency of the system corresponds to the operating frequency of the chip, ie 13.56 MHz. If the capacity of the electronic chip 9 is not high enough compared to the inductance of the loop, a capacity (not shown in the drawings), of appropriate value, will be mounted in parallel with the electronic chip 9.
  • a protective sheet (not shown) is applied. Fold lines P1, P2 are then marked on the support 7 at right angles.
  • Each of the lines P1, P2 is located on one of the branches of the support 7, so as to divide the label into three portions 11, 12, 13.
  • Each of the portions 11, 12, 13 comprises a part of the loop formed by the wire 8 representing approximately one third of the total surface of the loop.
  • the three portions 11, 12, 13 have substantially identical receiving surfaces. It is important to choose the dimensions and arrangement of the loop in order to obtain electromagnetic characteristics suitable for use in the frequency range chosen. Thus, the following adjustment can, for example, be carried out, by imposing the equality of the surfaces of the loop in the different planes.
  • FIG. 6 represents an alternative embodiment of the label of FIG. 3, in which the same elements are designated by the same references as above.
  • the label has, flat, a rectangular shape. In condition of use, the part 11 is glued to the face 3, near the corner 2, so that the lines P1, P2 are each located on an edge of the corner.
  • the line P1 is located on the edge between the face 3 and the face 4, and the line P2 is located on the edge between the face 3 and the face 5.
  • the parts 12, 13 are then folded according to their respective line P1, P2 to be glued to the faces 4, 5 of the package 1.
  • the label therefore has three receiving surfaces perpendicular to each other, corresponding to the portions 11, 12, 13.
  • Each surface being suitable to receive an electromagnetic wave oriented substantially perpendicular to it, the device therefore defines a three-dimensional orthogonal coordinate system covering all possible orientations. Indeed, any electromagnetic wave will have components H1, H2 and H3 in this coordinate system and will therefore be picked up by the loop.
  • a device 28 according to a second embodiment of the invention and as shown in FIGS. 7 and 8, comprises a flat support 29 in the form of a flexible strip.
  • a wire 30 is placed on the periphery of the support 29 so as to form a rectangular loop and is connected to an electronic chip 9.
  • the support 29 is covered with a protective film then the device is glued to an open bracelet 31 having dimensions close to those of the support 29. Under conditions of use, the open bracelet 31 is placed around a substantially cylindrical body, such as a wrist or an ankle so as to constitute a bracelet.
  • the loop formed by the wire 30 then has an open bracelet structure and therefore has receiving surfaces making it possible to pick up radially oriented Hr waves and Ha waves oriented along the axis of the cylinder.
  • the fact that the bracelet 31 is an open bracelet allows the device 28 to easily adapt to different diameters.
  • the surprising feature of a loop with an open bracelet structure is that the resonant frequency and the overvoltage coefficient of the device vary little when its diameter changes slightly.
  • the curve of the variation of the frequency as a function of the diameter is shown in FIG. 10 for a bracelet 31 tuned to 13.56 MHz when its diameter is 8 centimeters. When the diameter of the bracelet varies between 7 and 10 cm, the resonance frequency remains around the nominal frequency of 13.56 MHz.
  • FIGS. 10 and 11 A device 33, produced according to the third preferred embodiment of the invention, is shown in FIGS. 10 and 11.
  • This device 33 comprises a spiral wire 34 closed on itself so as to form a circular loop having two ends connected to an electronic chip 9. Under conditions of use, this device 33 is placed around a body having substantially the shape of a cylinder, such as an ankle or a wrist, and has receiving surfaces making it possible essentially to pick up waves Ha oriented along the axis of the cylinder. Furthermore, the elasticity of the spiral allows the device 33 to easily adapt to different diameters without a specific opening device.
  • the resonant frequency varied little with the diameter.
  • the curve of the resonant frequency as a function of the diameter of the loop is represented in FIG. 12.
  • FIG. 12 The curve of the resonant frequency as a function of the diameter of the loop is represented in FIG. 12.
  • FIG. 13 represents a device 35 according to a fourth embodiment, intended to be glued to the corner of a package, like the first embodiment, comprising a wire running on each face of the packet two perpendicular segments, so as to form a left hexagon around a corner of the packet, the chip 37 being located for example on a vertex of the hexagon.
  • FIG. 14 represents a device 38 according to a fifth embodiment intended to be glued to the corner of a package, like the first embodiment, which is similar to the first embodiment with the difference that its shape does not have L with straight segments, but with a rounded outer shape.
  • 15 represents a sixth embodiment of a device 39, the loop being constituted by a rectangle which is twisted along an axis of torsion parallel to its length, in order to constitute a left surface making it possible to receive waves in several directions.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Theoretical Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Burglar Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Details Of Aerials (AREA)

Abstract

The invention relates to a passive transmitter-receiver device (6,28,33) fed by an electromagnetic wave, provided with an antenna comprising a loop (7, 30, 34) which is associated with an electronic transponder chip (9), said loop being able to feed the electronic chip by an induced current which is generated when it is cross-flown by an electromagnetic wave (H1, H2, H3, Ha, Hr) carrying information, and to transmit a second electromagnetic wave carrying a response from the electronic chip. The antenna is configured in such a way that the loop includes at least two non-coplanar or non-parallel parts in a position of use.

Description

DISPOSITIF RECEPTEUR-E ETTER PASSIF ALIMENTE PAR UNE ONDE ELECTROMAGNETIQUEPASSIVE RECEIVER-E ETTER DEVICE POWERED BY AN ELECTROMAGNETIC WAVE
La présente invention se rapporte à un dispositif récepteur- émetteur passif alimenté par une onde électromagnétique véhiculant des informations. Le fonctionnement de tels dispositifs repose sur une transmission par induction entre, d'une part, une carte ou une étiquette possédant une antenne en forme de boucle dont les extrémités sont reliées à une puce électronique présente sur la carte ou l'étiquette, et d'autre part, un terminal capable d'émettre et de recevoir une onde électromagnétique porteuse d'informations. L'antenne de la carte ou étiquette capte l'onde électromagnétique émise par le terminal et transmet les informations à la puce qui les traite avant d'éventuellement envoyer une réponse réémise par l'antenne et qui sera captée par le terminal. Ainsi ce dernier peut lire et/ou modifier les informations stockées sur la carte. De tels dispositifs permettent la mise en œuvre de procédés d'échange de données, dits «sans contact », utilisés par exemple pour des systèmes d'identification à distance, des systèmes antivol, de validation de titres de transport, ainsi que pour l'identification et le suivi de colis dans un entrepôt. Ces dispositifs sont généralement connus sous le nom de radio frequency identification device (RFID). Un des grands avantages de ces dispositifs, outre le fait qu'ils ne nécessitent pas de contact direct entre la puce et le lecteur, est qu'ils sont passifs, c'est-à-dire qu'ils ne nécessitent pas de source autonome d'énergie électrique. En effet, lorsqu'une onde électromagnétique, possédant une fréquence voisine de la fréquence de résonance de l'antenne, traverse l'antenne perpendiculairement au plan de la boucle, elle génère un courant induit qui peut alors servir à alimenter un circuit électronique tel qu'une puce. Cependant, le mode d'alimentation de ces cartes constitue également leur principal inconvénient. En effet, pour qu'un courant induit soit généré, il est nécessaire que le champ magnétique de l'onde soit dirigé sensiblement perpendiculairement au plan de la boucle. Si la question de l'orientation du champ magnétique ne pose que peu de problèmes pour des applications imposant un positionnement relativement déterminé, telles que les valideurs ou les badges d'identification, il n'en va pas de même lorsque l'objet à identifier est en mouvement ou a un positionnement non prévisible. C'est notamment le cas lorsque l'on souhaite appliquer cette technologie au suivi de sportifs lors de compétitions ou à l'identification de colis dans un entrepôt. Une première solution consiste à placer plusieurs terminaux de manière à couvrir le maximum des orientations possibles de l'antenne. Cette solution est coûteuse et nécessite une gestion informatique complexe des différents terminaux afin d'éviter les doubles validations si l'objet à détecter est en mouvement. Une autre solution, consiste à placer une étiquette contenant une puce électronique transpondeur sur chaque côté de l'objet à détecter de manière à couvrir les trois directions d'incidence possibles du champ magnétique émis par le terminal. Ainsi le champ sera dans tous les cas capté par au moins une étiquette. Cependant, il est également possible que plusieurs étiquettes réagissent au champ magnétique et il est donc nécessaire de prévoir également une informatique de contrôle permettant, d'une part, de regrouper les différentes étiquettes collées sur un même objet, et d'autre part, de gérer leur éventuelle détection croisée. Par ailleurs, si l'on souhaite modifier les informations concernant l'objet, enregistrées sur la puce, il sera nécessaire de modifier les puces de toutes les étiquettes de l'objet. Toutes les étiquettes d'un même objet ne captant pas nécessairement l'onde électromagnétique, une telle mise à jour des puces est difficilement envisageable. Le document FR 2 812 427 décrit une autre solution, dans laquelle une antenne est déployée sur plusieurs supports adhésifs distincts comportant chacun un enroulement disposé dans un plan particulier, les enroulements étant disposés à distance pour éviter la perturbation d'un enroulement par rapport à un autre enroulement. Ce dispositif donne satisfaction pour une installation définitive sur un objet volumineux de type palette. Toutefois, il ne permet pas l'utilisation d'un support de taille réduite, inférieure au mètre et à plus forte raison à 50 cm, applicable facilement sur un objet ou portable par un individu. De plus, cette antenne ne permet pas la détection selon un plan perpendiculaire à la palette. La présente invention a pour but de remédier aux inconvénients précédemment évoqués, et consiste pour cela en un dispositif récepteur- émetteur passif alimenté par onde électromagnétique possédant une antenne comprenant une boucle associée à une puce électronique transpondeur, cette boucle étant apte, d'une part, à alimenter la puce électronique par un courant induit généré lorsqu'elle est traversée par une première onde électromagnétique véhiculant des informations, et d'autre part, à émettre une deuxième onde électromagnétique véhiculant la réponse de la puce électronique, caractérisé en ce que l'antenne est conçue de manière à ce que la boucle comprenne au moins deux parties non coplanaires ou non parallèles en position d'utilisation. De cette manière, l'antenne possède une surface de réception totale non plane, et est donc capable de capter des ondes électromagnétiques dans plusieurs directions. Plus précisément, l'antenne pourra capter les ondes dont le champ magnétique possède au moins une composante orientée sensiblement perpendiculairement à une portion de l'antenne. Il doit être bien compris que le terme antenne désigne toute la partie du système radioélectrique conçu pour rayonner ou capter les ondes. La présente invention permet de fournir une solution simple de taille réduite, permettant d'équiper facilement un objet ou un individu. Avantageusement, la boucle comprend au moins deux parties situées dans des plans sensiblement perpendiculaires. Cette configuration rend le dispositif tout particulièrement adapté au suivi de colis ou paquets. Selon un premier mode de réalisation de l'invention, la boucle est destinée à être disposée dans deux plans sensiblement perpendiculaires entre eux. Avantageusement, la boucle est destinée à être positionnée dans trois plans sensiblement perpendiculaires entre eux. De cette manière l'antenne couvre les trois directions de l'espace et pourra donc capter les ondes électromagnétiques quelle que soit leur orientation. De manière préférentielle, l'antenne est intégrée dans un support destiné à être collé sur plusieurs côtés d'un même objet. Avantageusement, le support est réalisé sous la forme d'une étiquette autoadhésive. Selon un second mode de réalisation de l'invention, l'antenne comprend une boucle réalisée sous la forme d'un bracelet cylindrique ouvert, obtenu à partir d'un support plan constitué par une bande souple. Selon un troisième mode de réalisation de l'invention, l'antenne comprend une boucle circulaire fermée réalisée à partir d'un fil spirale. Avantageusement, la boucle possède un diamètre compris entre 4 et 10 cm. De tels dispositifs selon les deuxième et troisième modes de réalisation de l'invention peuvent être facilement portés autour du poignet ou de la cheville d'une personne et sont donc particulièrement adaptés au suivi de sportifs. De manière préférentielle la boucle possède un diamètre compris entre 4 et 10 cm. L'invention sera mieux comprise à l'aide de la description détaillée qui est exposée ci-dessous en regard des dessins annexés dans lesquels : La figure 1 est une vue schématique d'un colis sur lequel est collé un dispositif selon un premier mode de réalisation de l'invention. La figure 2 est une vue schématique agrandie du dispositif collé sur le colis représenté à la figure 1. La figure 3 est une vue schématique du dispositif de la figure 2 avant collage sur le colis. La figure 4 représente de façon schématique la disposition de la boucle du dispositif de figure 1. La figure 5 est une courbe représentant la variation de la fréquence de résonance en fonction de la distance de la boucle à un coin du paquet autour duquel le dispositif de figure 1 est plié. La figure 6 représente une variante du dispositif de la figure 3. La figure 7 est une vue schématique d'une bande, comprenant un dispositif selon le deuxième mode de réalisation de l'invention, avant mise en forme. La figure 8 est une vue schématique de la bande représentée à la figure 7, après mise en forme autour d'un cylindre. La figure 9 est une courbe représentant la variation de la fréquence de résonance en fonction du diamètre du cylindre de la figure 8. La figure 10 est une vue schématique de dessus d'un dispositif selon le troisième mode de réalisation préféré de l'invention. La figure 11 est une vue schématique en perspective du dispositif représenté à la figure 10, placé autour d'un cylindre. La figure 12 est une courbe représentant la variation de la fréquence de résonance en fonction du diamètre du cylindre représenté sur la figure 10. La figure 13 est une vue schématique en perspective d'un dispositif selon un quatrième mode de réalisation préféré de l'invention. La figure 14 est une vue schématique en perspective d'un dispositif selon un cinquième mode de réalisation préféré de l'invention. La figure 15 est une vue schématique en perspective d'un dispositif selon un sixième mode de réalisation préféré de l'invention. Un colis 1 parallélépipédique, tel que représenté sur la figure 1 , présente huit coins 2, chaque coin 2 étant délimité par trois faces 3, 4, 5 perpendiculaires entre elles. Un dispositif 6 selon un premier mode de réalisation de l'invention est collé sur un coin 2 de manière à être en contact avec les trois faces 3, 4, 5, comme représenté sur la figure 2. Pour ce faire, le dispositif 6 se présente sous la forme d'une étiquette plane, représentée sur la figure 3, comportant un support 7 adhésif en forme d'équerre réalisé dans une matière souple pliable telle que du papier ou un film polymère. Un fil 8 conducteur, possédant deux extrémités, est déposé sur le pourtour du support 7 de manière à former une boucle présentant également une forme d'équerre. Le fil 8 conducteur peut être solidarisé sur le support 7 ou non. Alternativement, la boucle peut également être réalisée sous la forme d'une piste conductrice obtenue par dépôt métallique ou à partir d'une encre conductrice. Les extrémités du fil 8 sont reliées aux bornes d'alimentation d'une puce électronique 9 transpondeur. Une telle puce électronique 9 est connue en soi et est du type utilisé pour les RFID, prévus pour fonctionner à des fréquences supérieures à 10 MHz, généralement 13,56 MHz, et dont les normes de fonctionnement sont principalement fixées par les standards ISO. Le circuit électronique comprenant, d'une part, le fil 8 conducteur formant une boucle, et d'autre part, la puce électronique 9 transpondeur, est conçu de manière à former un résonateur dont la boucle constitue l'antenne. Ce type de circuit est également connu. L'antenne est réalisée de manière à ce que la fréquence de résonance du système corresponde à la fréquence de fonctionnement de la puce, soit 13,56 MHz. Si la capacité de la puce électronique 9 n'est pas suffisamment élevée par rapport à l'inductance de la boucle, une capacité (non représentée aux dessins), de valeur appropriée, sera montée en parallèle à la puce électronique 9. Une fois le circuit électronique placé sur le support 7, un feuillet de protection (non représenté) est appliqué. Des lignes de pliage P1 , P2 sont alors marquées sur le support 7 en équerre. Chacune des lignes P1 , P2 est située sur une des branches du support 7, de manière à diviser l'étiquette en trois portions 11 , 12, 13. Chacune des portions 11 , 12, 13 comporte une partie de la boucle formée par le fil 8 représentant environ un tiers de la surface totale de la boucle. Ainsi les trois portions 11 , 12,13 possèdent des surfaces de réception sensiblement identiques. Il est important de choisir les dimensions et la disposition de la boucle afin d'obtenir des caractéristiques électromagnétiques adaptées à l'utilisation dans la gamme de fréquence choisie. Ainsi, le réglage suivant peut, à titre d'exemple, être réalisé, en imposant l'égalité des surfaces de la boucle dans les différents plans. En partant d'une structure en L telle que représentée aux figures 1 à 4, destinée à être pliée selon deux lignes P1 et P2, on peut définir trois surfaces destinées respectivement à être disposées dans trois plans différents, les trois surfaces S1 , S2, S3, étant séparées par les lignes de pliage et correspondant sensiblement à une première branche du L, la zone de liaison entre les deux branches du L, et la seconde branche du L. Nous appelions : - d la distance entre une branche du L et l'intersection des lignes de pliage P1 et P2, L la longueur d'une branche du L et l'intersection des lignes de pliage P1 et P2, I la largeur des branches du L En conséquence : 51 = LI 52 = (l+d)2 - d2 = I2 + 2ld 53 = Ll. Le champ magnétique passant au travers d'une des trois surfaces surfaces S1 , S2, S3, ces trois surfaces doivent être sensiblement de même taille. En définissant : - L= kl, relation caractéristique d'une face de l'étiquette - L+l+d = C, longueur globale du côté du carré dans lequel s'inscrit l'étiquette à plat, Pour avoir S1=S2=S3, on obtient : 3k + l C = l En générale k est fixé par le format rectangulaire d'étiquette d'une face. Le plus souvent il est égal à 1 ,3. Par exemple, si on fixe C=2, 5 cm et k=1 ,3, alors 1=50/4,9-10,2 cm ; L=13,26 cm et d=1 ,53 cm. Les mesures suivantes ont d'autre part été réalisées. L'étiquette étant conçue à plat, la figure 5 montre l'évolution de sa fréquence de resonnance en déformant l'étiquette pour différentes valeurs de d. Ainsi, les valeurs de d utilisables permettant d'obtenir une fréquence de resonnance voisine de celle recherchée, qui dans l'exemple est de 13.56MhZ, sont comprises dans une bandes de valeurs Δd entre 1 ,3 cm et 3,5 cm. Il apparaît donc que les valeurs de d utilisables comprennent celle déterminées en utilisant la méthode d'égalité des surfaces. La figure 6 représente une variante d'exécution de l'étiquette de figure 3, dans laquelle les mêmes éléments sont désignés par les mêmes références que précédemment. Dans ce cas, l'étiquette présente, à plat, une forme rectangulaire. En condition d'utilisation, la partie 11 est collée sur la face 3, à proximité du coin 2, de manière à ce que les lignes P1 , P2 soient chacune situées sur une arête du coin. En l'espèce, la ligne P1 est située sur l'arête entre la face 3 et la face 4, et la ligne P2 est située sur l'arête entre la face 3 et la face 5. Les parties 12, 13 sont ensuite pliées selon leur ligne respective P1 , P2 pour être collées sur les faces 4, 5 du colis 1. Une fois en place, l'étiquette présente donc trois surfaces réceptrices perpendiculaires entre elles, correspondant aux portions 11 , 12, 13. Chaque surface étant apte à recevoir une onde électromagnétique orientée sensiblement perpendiculairement à elle, le dispositif définit donc un repère orthogonal tridimensionnel couvrant toutes les orientations possibles. En effet, toute onde électromagnétique possédera des composantes H1 , H2 et H3 dans ce repère et sera donc captée par la boucle. Il est intéressant de noter qu'une excitation par un champ magnétique unidirectionnel H1 ou H2 ou H3 suffit à faire résonner la boucle entière et à fournir à la puce 9 l'énergie suffisante pour fonctionner. Un dispositif 28, selon un second mode de réalisation de l'invention et tel que représenté sur les figures 7 et 8, comporte un support 29 plan en forme de bande souple. Un fil 30 est placé sur le pourtour du support 29 de manière à former une boucle rectangulaire et est connecté à une puce électronique 9. Le support 29 est recouvert d'un film protecteur puis le dispositif est collé sur un bracelet ouvert 31 possédant des dimensions voisines de celles du support 29. En conditions d'utilisation, le bracelet ouvert 31 est placé autour d'un corps sensiblement cylindrique, tel qu'un poignet ou une cheville de manière à constituer un bracelet. La boucle formée par le fil 30 possède alors une structure de bracelet ouvert et présente donc des surfaces réceptrices permettant de capter des ondes Hr orientées radialement et des ondes Ha orientées selon l'axe du cylindre. Le fait que le bracelet 31 soit un bracelet ouvert permet au dispositif 28 de s'adapter facilement à des diamètres différents. La particularité surprenante d'une boucle présentant une structure de bracelet ouvert est que la fréquence de résonance et le coefficient de surtension du dispositif varient peu lorsque son diamètre change légèrement. La courbe de la variation de la fréquence en fonction du diamètre est représentée à la figure 10 pour un bracelet 31 accordé à 13,56 MHz lorsque son diamètre est de 8 centimètres. Quand le diamètre du bracelet varie entre 7 et 10 cm, la fréquence de résonance reste autour de la fréquence nominale de 13,56 MHz. Un dispositif 33, réalisé selon le troisième mode de réalisation préféré de l'invention, est représenté aux figures 10 et 11. Ce dispositif 33 comporte un fil spirale 34 refermé sur lui-même de manière à former une boucle circulaire présentant deux extrémités reliées à une puce électronique 9. En conditions d'utilisation, ce dispositif 33 est placé autour d'un corps ayant sensiblement la forme d'un cylindre, tel qu'une cheville ou un poignet, et présente des surfaces réceptrices permettant de capter essentiellement des ondes Ha orientées selon l'axe du cylindre. Par ailleurs, l'élasticité de la spirale permet au dispositif 33 de s'adapter facilement à des diamètres différents sans dispositif d'ouverture spécifique. Comme pour le dispositif 28, selon le troisième mode de réalisation, il a été constaté que la fréquence de résonance variait peu avec le diamètre. La courbe de la fréquence de résonance en fonction du diamètre de la boucle est représentée à la figure 12. La figure 13 représente un dispositif 35 selon un quatrième mode de réalisation, destiné à être collé sur le coin d'un colis, comme le premier mode de réalisation, comportant un fil parcourant sur chaque face du paquet deux segments perpendiculaires, de façon à former un hexagone gauche autour d'un coin du paquet, la puce 37 étant située par exemple sur un sommet de l'hexagone. La figure 14 représente un dispositif 38 selon un cinquième mode de réalisation destiné à être collé sur le coin d'un colis, comme le premier mode de réalisation, qui est similaire au premier mode de réalisation à la différence que sa forme ne présente pas L avec des segments droits, mais avec une forme extérieure arrondie. La figure 15 représente un sixième mode de réalisation d'un dispositif 39, la boucle étant constituée par un rectangle qui est tordu selon un axe de torsion parallèle à sa longueur, afin de constituer une surface gauche permettant de recevoir des ondes selon plusieurs directions. Bien que l'invention ait été décrite en liaison avec des exemples particuliers de réalisation, il est bien évident qu'elle n'y est nullement limitée et qu'elle comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci entrent dans le cadre de l'invention. The present invention relates to a passive receiver-transmitter device supplied by an electromagnetic wave carrying information. The operation of such devices is based on an induction transmission between, on the one hand, a card or a label having a loop-shaped antenna whose ends are connected to an electronic chip present on the card or the label, and d on the other hand, a terminal capable of transmitting and receiving an electromagnetic wave carrying information. The antenna of the card or label picks up the electromagnetic wave emitted by the terminal and transmits the information to the chip which processes it before possibly sending a response re-emitted by the antenna and which will be picked up by the terminal. Thus the latter can read and / or modify the information stored on the card. Such devices allow the implementation of so-called contactless data exchange methods, used for example for remote identification systems, anti-theft systems, validation of transport tickets, as well as for identification and tracking of packages in a warehouse. These devices are generally known as radio frequency identification device (RFID). One of the great advantages of these devices, besides the fact that they do not require direct contact between the chip and the reader, is that they are passive, that is to say that they do not require an autonomous source of electrical energy. Indeed, when an electromagnetic wave, having a frequency close to the resonant frequency of the antenna, crosses the antenna perpendicular to the plane of the loop, it generates an induced current which can then be used to feed an electronic circuit such as 'a chip. However, the method of supplying these cards also constitutes their main drawback. Indeed, for an induced current to be generated, it is necessary that the magnetic field of the wave is directed substantially perpendicular to the plane of the loop. If the question of the orientation of the magnetic field poses few problems for applications requiring a relatively determined positioning, such as validators or identification badges, this is not the case when the object to be identified is moving or has an unpredictable positioning. This is particularly the case when one wishes to apply this technology to the monitoring of sportsmen during competitions or to the identification of packages in a warehouse. A first solution consists in placing several terminals so as to cover the maximum of the possible orientations of the antenna. This solution is costly and requires complex IT management of the various terminals in order to avoid double validations if the object to be detected is in motion. Another solution consists in placing a label containing a transponder electronic chip on each side of the object to be detected so as to cover the three possible directions of incidence of the magnetic field emitted by the terminal. Thus the field will in all cases be captured by at least one label. However, it is also possible for several labels to react to the magnetic field and it is therefore necessary to also provide computer control making it possible, on the one hand, to group the different labels stuck on the same object, and on the other hand, manage their possible cross detection. Furthermore, if one wishes to modify the information concerning the object, recorded on the chip, it will be necessary to modify the chips of all the labels of the object. All the labels of the same object do not necessarily capture the electromagnetic wave, such an update of the chips is difficult to envisage. Document FR 2 812 427 describes another solution, in which an antenna is deployed on several separate adhesive supports each comprising a winding arranged in a particular plane, the windings being arranged at a distance to avoid disturbance of a winding with respect to a other winding. This device is satisfactory for a final installation on a bulky object of the pallet type. However, it does not allow the use of a support of reduced size, less than a meter and a fortiori to 50 cm, easily applicable on an object or portable by an individual. In addition, this antenna does not allow detection along a plane perpendicular to the pallet. The present invention aims to remedy the drawbacks mentioned above, and for this consists of a receiver device- passive transmitter powered by an electromagnetic wave having an antenna comprising a loop associated with a transponder electronic chip, this loop being able, on the one hand, to supply the electronic chip with an induced current generated when it is crossed by a first electromagnetic wave carrying information, and on the other hand, to emit a second electromagnetic wave carrying the response of the electronic chip, characterized in that the antenna is designed so that the loop comprises at least two non-coplanar or non-parallel parts in position of use. In this way, the antenna has a total non-planar reception surface, and is therefore capable of picking up electromagnetic waves in several directions. More specifically, the antenna will be able to pick up waves whose magnetic field has at least one component oriented substantially perpendicular to a portion of the antenna. It should be clearly understood that the term antenna designates the entire part of the radio system designed to radiate or receive waves. The present invention makes it possible to provide a simple solution of reduced size, making it possible to easily equip an object or an individual. Advantageously, the loop comprises at least two parts situated in substantially perpendicular planes. This configuration makes the device particularly suitable for tracking parcels or packages. According to a first embodiment of the invention, the loop is intended to be arranged in two planes substantially perpendicular to each other. Advantageously, the loop is intended to be positioned in three planes substantially perpendicular to each other. In this way the antenna covers the three directions of space and can therefore pick up electromagnetic waves regardless of their orientation. Preferably, the antenna is integrated in a support intended to be glued on several sides of the same object. Advantageously, the support is produced in the form of a self-adhesive label. According to a second embodiment of the invention, the antenna comprises a loop produced in the form of an open cylindrical bracelet, obtained from a flat support constituted by a flexible strip. According to a third embodiment of the invention, the antenna comprises a closed circular loop made from a spiral wire. Advantageously, the loop has a diameter of between 4 and 10 cm. Such devices according to the second and third embodiments of the invention can be easily worn around the wrist or ankle of a person and are therefore particularly suitable for monitoring athletes. Preferably, the loop has a diameter of between 4 and 10 cm. The invention will be better understood with the aid of the detailed description which is set out below with reference to the appended drawings in which: FIG. 1 is a schematic view of a package on which a device according to a first embodiment is stuck realization of the invention. Figure 2 is an enlarged schematic view of the device glued to the package shown in Figure 1. Figure 3 is a schematic view of the device of Figure 2 before bonding to the package. Figure 4 shows schematically the arrangement of the loop of the device of Figure 1. Figure 5 is a curve showing the variation of the resonant frequency as a function of the distance from the loop to a corner of the packet around which the device Figure 1 is folded. Figure 6 shows a variant of the device of Figure 3. Figure 7 is a schematic view of a strip, comprising a device according to the second embodiment of the invention, before shaping. Figure 8 is a schematic view of the strip shown in Figure 7, after shaping around a cylinder. Figure 9 is a curve showing the variation of the resonant frequency as a function of the diameter of the cylinder of Figure 8. Figure 10 is a schematic top view of a device according to the third preferred embodiment of the invention. Figure 11 is a schematic perspective view of the device shown in Figure 10, placed around a cylinder. FIG. 12 is a curve representing the variation of the resonant frequency as a function of the diameter of the cylinder shown in FIG. 10. Figure 13 is a schematic perspective view of a device according to a fourth preferred embodiment of the invention. Figure 14 is a schematic perspective view of a device according to a fifth preferred embodiment of the invention. Figure 15 is a schematic perspective view of a device according to a sixth preferred embodiment of the invention. A parallelepipedic package 1, as represented in FIG. 1, has eight corners 2, each corner 2 being delimited by three faces 3, 4, 5 perpendicular to each other. A device 6 according to a first embodiment of the invention is glued to a corner 2 so as to be in contact with the three faces 3, 4, 5, as shown in FIG. 2. To do this, the device 6 is present in the form of a flat label, represented in FIG. 3, comprising an adhesive support 7 in the form of a square made of a pliable flexible material such as paper or a polymer film. A conductive wire 8, having two ends, is deposited on the periphery of the support 7 so as to form a loop also having a square shape. The conductive wire 8 can be secured to the support 7 or not. Alternatively, the loop can also be produced in the form of a conductive track obtained by metallic deposition or from a conductive ink. The ends of the wire 8 are connected to the supply terminals of an electronic chip 9 transponder. Such an electronic chip 9 is known per se and is of the type used for RFID, intended to operate at frequencies above 10 MHz, generally 13.56 MHz, and whose operating standards are mainly set by ISO standards. The electronic circuit comprising, on the one hand, the conductive wire 8 forming a loop, and on the other hand, the electronic chip 9 transponder, is designed so as to form a resonator whose loop constitutes the antenna. This type of circuit is also known. The antenna is made in such a way that the resonant frequency of the system corresponds to the operating frequency of the chip, ie 13.56 MHz. If the capacity of the electronic chip 9 is not high enough compared to the inductance of the loop, a capacity (not shown in the drawings), of appropriate value, will be mounted in parallel with the electronic chip 9. Once the electronic circuit placed on the support 7, a protective sheet (not shown) is applied. Fold lines P1, P2 are then marked on the support 7 at right angles. Each of the lines P1, P2 is located on one of the branches of the support 7, so as to divide the label into three portions 11, 12, 13. Each of the portions 11, 12, 13 comprises a part of the loop formed by the wire 8 representing approximately one third of the total surface of the loop. Thus the three portions 11, 12, 13 have substantially identical receiving surfaces. It is important to choose the dimensions and arrangement of the loop in order to obtain electromagnetic characteristics suitable for use in the frequency range chosen. Thus, the following adjustment can, for example, be carried out, by imposing the equality of the surfaces of the loop in the different planes. Starting from an L-shaped structure as shown in FIGS. 1 to 4, intended to be folded along two lines P1 and P2, one can define three surfaces intended respectively to be arranged in three different planes, the three surfaces S1, S2, S3, being separated by the fold lines and corresponding substantially to a first branch of L, the connection zone between the two branches of L, and the second branch of L. We called: - d the distance between a branch of L and the intersection of the fold lines P1 and P2, L the length of a branch of the L and the intersection of the fold lines P1 and P2, I the width of the branches of the L Consequently: 51 = LI 52 = (l + d) 2 - d 2 = I 2 + 2ld 53 = Ll. The magnetic field passing through one of the three surface surfaces S1, S2, S3, these three surfaces must be substantially the same size. By defining: - L = kl, characteristic relationship of one face of the label - L + l + d = C, overall length of the side of the square in which the label is inscribed flat, To have S1 = S2 = S3, we get: 3k + l C = l In general k is fixed by the rectangular format of a label on one side. Most often it is equal to 1, 3. For example, if we set C = 2.5 cm and k = 1.3, then 1 = 50 / 4.9-10.2 cm; L = 13.26 cm and d = 1.53 cm. The following measurements were also carried out. The label being designed flat, Figure 5 shows the evolution of its resonance frequency by deforming the label for different values of d. Thus, the values of d which can be used to obtain a resonance frequency close to that sought, which in the example is 13.56 MHz, are included in a band of values Δd between 1.3 cm and 3.5 cm. It therefore appears that the usable values of d include that determined using the surface equality method. FIG. 6 represents an alternative embodiment of the label of FIG. 3, in which the same elements are designated by the same references as above. In this case, the label has, flat, a rectangular shape. In condition of use, the part 11 is glued to the face 3, near the corner 2, so that the lines P1, P2 are each located on an edge of the corner. In this case, the line P1 is located on the edge between the face 3 and the face 4, and the line P2 is located on the edge between the face 3 and the face 5. The parts 12, 13 are then folded according to their respective line P1, P2 to be glued to the faces 4, 5 of the package 1. Once in place, the label therefore has three receiving surfaces perpendicular to each other, corresponding to the portions 11, 12, 13. Each surface being suitable to receive an electromagnetic wave oriented substantially perpendicular to it, the device therefore defines a three-dimensional orthogonal coordinate system covering all possible orientations. Indeed, any electromagnetic wave will have components H1, H2 and H3 in this coordinate system and will therefore be picked up by the loop. It is interesting to note that an excitation by a unidirectional magnetic field H1 or H2 or H3 is enough to resonate the entire loop and provide chip 9 with sufficient energy to operate. A device 28, according to a second embodiment of the invention and as shown in FIGS. 7 and 8, comprises a flat support 29 in the form of a flexible strip. A wire 30 is placed on the periphery of the support 29 so as to form a rectangular loop and is connected to an electronic chip 9. The support 29 is covered with a protective film then the device is glued to an open bracelet 31 having dimensions close to those of the support 29. Under conditions of use, the open bracelet 31 is placed around a substantially cylindrical body, such as a wrist or an ankle so as to constitute a bracelet. The loop formed by the wire 30 then has an open bracelet structure and therefore has receiving surfaces making it possible to pick up radially oriented Hr waves and Ha waves oriented along the axis of the cylinder. The fact that the bracelet 31 is an open bracelet allows the device 28 to easily adapt to different diameters. The surprising feature of a loop with an open bracelet structure is that the resonant frequency and the overvoltage coefficient of the device vary little when its diameter changes slightly. The curve of the variation of the frequency as a function of the diameter is shown in FIG. 10 for a bracelet 31 tuned to 13.56 MHz when its diameter is 8 centimeters. When the diameter of the bracelet varies between 7 and 10 cm, the resonance frequency remains around the nominal frequency of 13.56 MHz. A device 33, produced according to the third preferred embodiment of the invention, is shown in FIGS. 10 and 11. This device 33 comprises a spiral wire 34 closed on itself so as to form a circular loop having two ends connected to an electronic chip 9. Under conditions of use, this device 33 is placed around a body having substantially the shape of a cylinder, such as an ankle or a wrist, and has receiving surfaces making it possible essentially to pick up waves Ha oriented along the axis of the cylinder. Furthermore, the elasticity of the spiral allows the device 33 to easily adapt to different diameters without a specific opening device. As for the device 28, according to the third embodiment, it was found that the resonant frequency varied little with the diameter. The curve of the resonant frequency as a function of the diameter of the loop is represented in FIG. 12. FIG. 13 represents a device 35 according to a fourth embodiment, intended to be glued to the corner of a package, like the first embodiment, comprising a wire running on each face of the packet two perpendicular segments, so as to form a left hexagon around a corner of the packet, the chip 37 being located for example on a vertex of the hexagon. FIG. 14 represents a device 38 according to a fifth embodiment intended to be glued to the corner of a package, like the first embodiment, which is similar to the first embodiment with the difference that its shape does not have L with straight segments, but with a rounded outer shape. FIG. 15 represents a sixth embodiment of a device 39, the loop being constituted by a rectangle which is twisted along an axis of torsion parallel to its length, in order to constitute a left surface making it possible to receive waves in several directions. Although the invention has been described in connection with particular examples of embodiment, it is obvious that it is in no way limited thereto and that it includes all the technical equivalents of the means described as well as their combinations if these fall within the scope of the invention.

Claims

REVENDICATIONS
1. Dispositif (6, 28, 33) récepteur-émetteur passif alimenté par onde électromagnétique possédant une antenne comprenant une boucle (7, 30, 34) associée à une puce électronique (9) transpondeur, cette boucle étant apte, d'une part, à alimenter la puce électronique par un courant induit généré lorsqu'elle est traversée par une première onde électromagnétique (H1 , H2, H3, Ha, Hr) véhiculant des informations, et d'autre part, à émettre une deuxième onde électromagnétique véhiculant la réponse de la puce électronique, caractérisé en ce que l'antenne est conçue de manière à ce que la boucle comprenne au moins deux parties non coplanaires ou non parallèles en position d'utilisation. 1. Device (6, 28, 33) passive receiver-transmitter powered by electromagnetic wave having an antenna comprising a loop (7, 30, 34) associated with an electronic chip (9) transponder, this loop being suitable, on the one hand , to supply the electronic chip with an induced current generated when it is crossed by a first electromagnetic wave (H1, H2, H3, Ha, Hr) carrying information, and on the other hand, to emit a second electromagnetic wave carrying the response of the electronic chip, characterized in that the antenna is designed so that the loop comprises at least two non-coplanar or non-parallel parts in the position of use.
2. Dispositif selon la revendication 1 , caractérisé en ce que la boucle comprend au moins deux parties situées dans des plans sensiblement perpendiculaires. 2. Device according to claim 1, characterized in that the loop comprises at least two parts located in substantially perpendicular planes.
3. Dispositif selon la revendication 2, caractérisé en ce que la boucle est destinée à être disposée dans deux plans sensiblement perpendiculaires entre eux. 4. Dispositif (6) selon la revendication 2, caractérisé en ce que la boucle (7) est destinée à être positionnée dans trois plans (3, 3. Device according to claim 2, characterized in that the loop is intended to be arranged in two planes substantially perpendicular to each other. 4. Device (6) according to claim 2, characterized in that the loop (7) is intended to be positioned in three planes (3,
4, 5) sensiblement perpendiculaires entre eux. 4, 5) substantially perpendicular to each other.
5. Dispositif (6) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'antenne est intégrée dans un support (7) destiné à être collé sur plusieurs côtés d'un objet (1). 5. Device (6) according to any one of claims 1 to 4, characterized in that the antenna is integrated in a support (7) intended to be glued on several sides of an object (1).
6. Dispositif (6) selon la revendication 5, caractérisé en ce que le support (7) est réalisé sous la forme d'une étiquette autoadhésive. 6. Device (6) according to claim 5, characterized in that the support (7) is produced in the form of a self-adhesive label.
7. Dispositif (28) selon la revendication 1 , caractérisé en ce que l'antenne comprend une boucle (30) réalisée sous la forme d'un bracelet cylindrique ouvert, obtenu à partir d'un support plan constitué par une bande souple. 7. Device (28) according to claim 1, characterized in that the antenna comprises a loop (30) produced in the form of an open cylindrical bracelet, obtained from a flat support constituted by a flexible strip.
8. Dispositif (33) selon la revendication 1 , caractérisé en ce que l'antenne comprend une boucle circulaire fermée réalisée à partir d'un fil spirale (34). 8. Device (33) according to claim 1, characterized in that the antenna comprises a closed circular loop made from a spiral wire (34).
9. Dispositif (28, 33) selon l'une quelconque des revendications 7 et 8, caractérisé en ce que la boucle possède un diamètre compris entre 4 et 10 cm. 9. Device (28, 33) according to any one of claims 7 and 8, characterized in that the loop has a diameter between 4 and 10 cm.
EP05717448A 2004-01-19 2005-01-19 Passive transmitter receiver device fed by an electromagnetic wave Withdrawn EP1721288A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0400442A FR2865329B1 (en) 2004-01-19 2004-01-19 PASSIVE RECEIVER-RECEIVER DEVICE POWERED BY AN ELECTROMAGNETIC WAVE
PCT/FR2005/000117 WO2005078649A1 (en) 2004-01-19 2005-01-19 Passive transmitter receiver device fed by an electromagnetic wave

Publications (1)

Publication Number Publication Date
EP1721288A1 true EP1721288A1 (en) 2006-11-15

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EP05717448A Withdrawn EP1721288A1 (en) 2004-01-19 2005-01-19 Passive transmitter receiver device fed by an electromagnetic wave

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US (1) US20070252763A1 (en)
EP (1) EP1721288A1 (en)
JP (1) JP2007524942A (en)
KR (1) KR20070012343A (en)
CN (1) CN1918586A (en)
AU (1) AU2005212668A1 (en)
FR (1) FR2865329B1 (en)
WO (1) WO2005078649A1 (en)

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WO2005078649A1 (en) 2005-08-25
FR2865329A1 (en) 2005-07-22
JP2007524942A (en) 2007-08-30
CN1918586A (en) 2007-02-21
US20070252763A1 (en) 2007-11-01
KR20070012343A (en) 2007-01-25
AU2005212668A1 (en) 2005-08-25
FR2865329B1 (en) 2006-04-21

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