EP2579389A1 - High mechanic resistance loop antenna for a passport - Google Patents

High mechanic resistance loop antenna for a passport Download PDF

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Publication number
EP2579389A1
EP2579389A1 EP11306276.4A EP11306276A EP2579389A1 EP 2579389 A1 EP2579389 A1 EP 2579389A1 EP 11306276 A EP11306276 A EP 11306276A EP 2579389 A1 EP2579389 A1 EP 2579389A1
Authority
EP
European Patent Office
Prior art keywords
antenna
parallel
turns
magnetic field
inter
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Withdrawn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
EP11306276.4A
Other languages
German (de)
French (fr)
Inventor
Blandine Alleysson
Arek Buyukkalender
Christophe Bousquet
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.)
Thales DIS France SA
Original Assignee
Gemalto SA
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 Gemalto SA filed Critical Gemalto SA
Priority to EP11306276.4A priority Critical patent/EP2579389A1/en
Priority to SG10201602444TA priority patent/SG10201602444TA/en
Priority to TR2018/02317T priority patent/TR201802317T4/en
Priority to EP12769411.5A priority patent/EP2764576B1/en
Priority to US14/349,204 priority patent/US20140285395A1/en
Priority to PCT/EP2012/069409 priority patent/WO2013050344A1/en
Priority to PT127694115T priority patent/PT2764576T/en
Priority to JP2014532438A priority patent/JP2014535184A/en
Priority to SG11201400756XA priority patent/SG11201400756XA/en
Priority to KR1020147011855A priority patent/KR20140071481A/en
Publication of EP2579389A1 publication Critical patent/EP2579389A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the invention relates to a magnetic field antenna for a radio frequency transponder.
  • radiofrequency antenna supports such as electronic passports, travel documents, smart cards, tickets, radio frequency tags, radio frequency transponders, insert (or inlay).
  • Such objects may in particular comply with the ISO / IEC 14443 standard.
  • the antenna supports constituted by a sheet of the passport booklet or the cover, it was found by the inventors of the weak points during the test below of mechanical resistance including bending and twisting (WG3TF4_N0232_ Test Specifications for MPRs V3.2 ⁇ 5.7)
  • the problem identified by the inventors is that the natural tendency to fold P that a cover spreads to the layers containing the antenna can thus cause the rupture thereof by shearing.
  • the object of the invention is to propose a transponder antenna which is more resistant to the abovementioned bending stresses.
  • the folding tendency was localized at a median located substantially perpendicular to a passport booklet hinge.
  • the inventors' studies have shown that the closer the antenna wires are to each other, the more resistant and crease resistant the antenna is .
  • the invention consists in bringing the wires at least only in the identified zone of stress so as not to modify the performances. radiofrequency of the antenna while increasing its resistance to bending / twisting.
  • the subject of the invention is therefore a magnetic field antenna comprising a plane support with a longitudinal edge, an electromagnetic coupling receiving antenna on the support, said edge being intended to be parallel to a booklet binding, said antenna comprising turns parallel and perpendicular respectively extending parallel and perpendicular to the longitudinal edge;
  • the antenna is distinguished in that said parallel turns have an inter-turn spacing close to the inter-turn spacing of the perpendicular turns.
  • the invention also relates to an electronic portable object comprising the antenna above; It can preferably be a passport, a booklet, the antenna being carried by a sheet or cover of the booklet or passport.
  • a booklet 1 including passport is subjected to a bending test as shown in the figure by a pressure F exerted in the center and the edges in reaction.
  • the figure 2 illustrates the booklet in profile showing the binding 2 and the opposite edge 3.
  • a passport sheet of the prior art has a plane support 4 supporting a radio frequency transponder, a longitudinal edge 2 near the passport binding, an electromagnetic coupling receiving antenna 14 on the support.
  • the antenna has turns surrounding a central coupling surface; The turns extend at least partly parallel and close to the longitudinal edge 2.
  • the antenna is here made of a wire embedded in the support.
  • the antenna is connected to an electronic micromodule comprising a radiofrequency integrated circuit chip 15 via the connection ends 16 and 17. It is not excluded to provide other antenna production techniques known to the skilled in the art, such as embroidery, already coiled antenna transfer, etching.
  • the invention preferably targets wire antennas of substantially constant section (or diameter).
  • the invention can provide a thinning of the width of the turns at the zone 7 in addition to a reduced inter-turn spacing.
  • the antenna can be considered in the absolute only by the turns but also with its substrate for the maintenance of the turns between them. It can include at least the turns themselves and the substrate.
  • antenna within the meaning of the invention, it is possible also speak of insert (inlay in English) antenna or radio frequency transponder with or without integrated circuit chip connected.
  • the antenna can be finished or semi-finished insofar as it can be intended to be connected or not to one or more electrical components, electronic.
  • the antenna may be bare (not connected to an integrated circuit chip);
  • the antenna can be connected to a capacity.
  • the turns of the antenna or at least those arranged along the edge 2 adjacent the binding, have a spacing substantially constant spacing.
  • the spacing is for example commonly between 0.5 and 2 mm for son diameter between 50 and 150 microns.
  • a region 7 of the turns located near the longitudinal edge 2 is a region particularly exposed to a stress axis as symbolized by an arrow 5.
  • an antenna support 4 carries an antenna 14 extended on or parallel to one of its main surfaces;
  • the antenna support is substantially in accordance with the preceding figure with a difference described hereinafter.
  • the edge 2 is intended to be parallel to a passport booklet binding; It can be seen that the antenna 14 in the form of a rectangle comprises parallel (large side of the rectangle) and perpendicular (small sides of the rectangle) turns extending respectively parallel and perpendicular to the longitudinal edge (2).
  • At least a portion of the turns disposed in a region 7 close to the edge 2 adjacent to the binding has an inter-turn spacing ES close to the normal spacing EL of the turns of the other regions.
  • the parallel turns have, at least at a place or region 7, a close inter-turn spacing (ES) with respect to the inter-turn spacing (EL) of the perpendicular turns. (See Fig. 10-11 )
  • the surface portion 7 is situated on a transverse median of the support 4, extending perpendicularly to the longitudinal edge 2.
  • the edge 2 is intended to be adjacent to a hinge or binding of the booklet.
  • the close turns have an inter-turn spacing ES of between 0.1 and 0.5 mm;
  • the unmated turns, for their part, have an inter-turn spacing EL between 0.5 and 2 mm.
  • the wires have a diameter of between 50 and 150 ⁇ m.
  • substantially the entire edge of the antenna adjacent to the binding or the edge 2 is made with a reduced inter-turn spacing with respect to particular portions of turns disposed perpendicularly to the edge 2.
  • the antenna comprises two portions 9 and 10 located in the extension of the axis of stress 5.
  • the portion 10 is located on the opposite turns to those close to the fold.
  • the two sides 11, 12 of the antenna extending parallel to the edge adjacent to the fold 2 are made with a reduced inter-turn spacing ES compared to the turns oriented transversely to the edge 2.
  • the turns of the region 7 not only have a reduced spacing ES but they are all shifted towards the inner turn of the antenna 14 so that the outer turn of the antenna in the region 7 is is further away from the edge 2 than the outer turn of the remaining portions of the antenna parallel and adjacent to the edge 2.
  • the turns of region 7 are brought closer to the inner turn of the antenna.
  • the outer turn of the region 7 is at a distance B from the edge 2 which is greater than a distance A from the edge 2 to the portions of external turn parallel to the edge 2, situated outside the region 7.
  • the normal inter-turn spacing EL of an antenna is indicated in the regions not subjected to the bending stress (for example in the portions of the antenna oriented perpendicularly to the binding or edge 2).
  • the EL values are between 0.5 and 2 mm.
  • the ES values are between 0.1 and 0.5 mm.
  • ES is between 0.1 and 0.4 mm.
  • the number of turns is indicative only in the example between 3 - 7.
  • the invention may relate to any portable electronic object comprising the transponder described above.
  • it may include a passport, a booklet, the transponder being carried by a sheet or cover of the booklet.

Landscapes

  • Credit Cards Or The Like (AREA)
  • Details Of Aerials (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

The magnetic field antenna comprises a flat base (4) with a longitudinal edge (2), an electromagnetic coupling receiving antenna (14) placed on the base, and parallel and perpendicular coils that extend to the longitudinal edge. The longitudinal edge is intended to be parallel to a booklet binder, and is adjacent to a hinge booklet. The parallel coils have close-together inter-coil spacing (ES) of 0.1-0.5 mm with respect to an inter-coil spacing (EL) (0.5-2 mm) of the perpendicular coils, and are localized in an area (7) located at a support medium that is perpendicular to the edge. The magnetic field antenna comprises a flat base (4) with a longitudinal edge (2), an electromagnetic coupling receiving antenna (14) placed on the base, and parallel and perpendicular coils that extend to the longitudinal edge. The longitudinal edge is intended to be parallel to a booklet binder, and is adjacent to a hinge booklet. The parallel coils have close-together inter-coil spacing (ES) of 0.1-0.5 mm with respect to an inter-coil spacing (EL) (0.5-2 mm) of the perpendicular coils, and are localized in an area (7) located at a support medium that is perpendicular to the edge. The antenna is made of wire having a diameter of 50-150 mu m. The parallel coils of the area are located at a distance (B) of the longitudinal edge that is higher than a distance (A) for portions of parallel coils located apart from the area. An independent claim is included for a portable electronic object.

Description

Domaine de l'invention.Field of the invention

L'invention concerne une antenne de champ magnétique pour transpondeur radiofréquence.The invention relates to a magnetic field antenna for a radio frequency transponder.

Elle concerne notamment le domaine des supports d'antenne radiofréquence tels que des passeports électroniques, documents de voyage, carte à puce, tickets, étiquettes radiofréquences, des transpondeurs radiofréquences, insert (ou inlay).It concerns in particular the field of radiofrequency antenna supports such as electronic passports, travel documents, smart cards, tickets, radio frequency tags, radio frequency transponders, insert (or inlay).

De tels objets peuvent être conformes notamment au standard ISO / IEC 14443.Such objects may in particular comply with the ISO / IEC 14443 standard.

Art antérieur.Prior art.

Il est connu de modifier l'agencement des spires d'une antenne radiofréquence notamment l'écartement inter spires pour satisfaire les accords en fréquence nécessaires à la communication. Il est possible notamment de prévoir des zones de l'antenne où les spires sont écartées volontairement par rapport à une distance inter spires normale de manière à disposer d'une capacité inter-spire pour ajuster sur l'accord en fréquence.It is known to modify the arrangement of the turns of a radiofrequency antenna, especially the spacing between turns to satisfy the frequency agreements necessary for the communication. It is possible in particular to provide areas of the antenna where the turns are deliberately spaced from a normal inter-turn spacing so as to have an inter-turn capacitance to adjust the frequency tuning.

Il est connu de réduire localement l'écartement inter-spires des antennes pour créer un pont isolant à un endroit où les spires sont rapprochées et permettre un croisement d'un fil par-dessus ou permettre de disposer un microcircuit à cheval sur les spires.It is known to locally reduce the inter-turn spacing of the antennas to create an insulating bridge at a place where the turns are close together and allow a crossing of a wire over or allow to have a microcircuit astride the turns.

Problème technique.Technical problem.

Dans les passeports notamment, les supports d'antenne constitués par une feuille du livret de passeport ou la couverture, il a été constaté par les inventeurs des points de fragilisation au cours du test ci-après de résistance mécanique comportant des flexions et torsions (WG3TF4_N0232_ Spécifications de test pour MPRs V3.2 §5.7)In the passports in particular, the antenna supports constituted by a sheet of the passport booklet or the cover, it was found by the inventors of the weak points during the test below of mechanical resistance including bending and twisting (WG3TF4_N0232_ Test Specifications for MPRs V3.2 §5.7)

Le problème identifié par les inventeurs est que la tendance naturelle à la pliure P que présente une couverture se propage aux couches contenant l'antenne pouvant ainsi entrainer la rupture de celle-ci par cisaillement.The problem identified by the inventors is that the natural tendency to fold P that a cover spreads to the layers containing the antenna can thus cause the rupture thereof by shearing.

L'invention a pour objectif de proposer une antenne pour transpondeur qui soit plus résistant aux contraintes de flexions précitées.The object of the invention is to propose a transponder antenna which is more resistant to the abovementioned bending stresses.

La tendance à la pliure a été localisée au niveau d'une médiane située sensiblement perpendiculairement à une charnière de livret du passeport.The folding tendency was localized at a median located substantially perpendicular to a passport booklet hinge.

Les études des inventeurs ont montré que plus les fils de l'antenne sont rapprochés les uns des autres, plus l'antenne est résistante à la pliure et à l'endommagement.The inventors' studies have shown that the closer the antenna wires are to each other, the more resistant and crease resistant the antenna is .

Toutefois, compte tenu des propriétés radiofréquences RFID demandées à l'antenne, l'écartement des spires n'est pas libre.However, given the radio frequency RFID properties requested on the antenna, the spacing of the turns is not free.

Résumé de l'invention.Summary of the invention.

L'invention consiste à rapprocher les fils au moins uniquement dans la zone identifiée de contrainte de manière à ne pas modifier les performances radiofréquences de l'antenne tout en augmentant sa résistance à la flexion / torsion.The invention consists in bringing the wires at least only in the identified zone of stress so as not to modify the performances. radiofrequency of the antenna while increasing its resistance to bending / twisting.

L'invention a donc pour objet une antenne de champ magnétique comportant un support plan avec un bord longitudinal, une antenne de réception par couplage électromagnétique sur le support, ledit bord étant destiné à être parallèle à une reliure de livret, ladite antenne comportant des spires parallèles et perpendiculaires s'étendant respectivement parallèlement et perpendiculairement au bord longitudinal ;The subject of the invention is therefore a magnetic field antenna comprising a plane support with a longitudinal edge, an electromagnetic coupling receiving antenna on the support, said edge being intended to be parallel to a booklet binding, said antenna comprising turns parallel and perpendicular respectively extending parallel and perpendicular to the longitudinal edge;

L'antenne se distingue en ce que lesdites spires parallèles présentent un espacement inter-spires rapproché par rapport à l'espacement inter-spires des spires perpendiculaires.The antenna is distinguished in that said parallel turns have an inter-turn spacing close to the inter-turn spacing of the perpendicular turns.

Selon d'autres caractéristiques de l'antenne,

  • Les spires parallèles sont localisées dans une région située sensiblement sur une médiane du support, ladite médiane étant perpendiculaire au bord longitudinal ;
  • Le bord est adjacent à une charnière de livret ;
  • Les spires parallèles ont un espacement inter-spires (ES) compris entre 0,1 et 0.5 mm ;
According to other characteristics of the antenna,
  • The parallel turns are located in a region located substantially on a median of the support, said median being perpendicular to the longitudinal edge;
  • The edge is adjacent to a booklet hinge;
  • The parallel turns have an inter-turn spacing (ES) of between 0.1 and 0.5 mm;

L'invention a également pour objet un objet portable électronique comportant l'antenne ci-dessus ; Il peut constituer de préférence un passeport, un livret, le l'antenne étant portée par une feuille ou une couverture du livret ou du passeport.The invention also relates to an electronic portable object comprising the antenna above; It can preferably be a passport, a booklet, the antenna being carried by a sheet or cover of the booklet or passport.

Brève description des figures.

  • La figure 1 illustre un test de flexion soumis à un livret de passeport ;
  • La figure 2 illustre le passeport en vue de profil montrant la reliure et le bord opposé ;
  • La figure 3 illustre l'apparition d'une pliure apparaissant sur une médiatrice transversale du passeport ;
  • La figure 4 illustre un transpondeur de l'art antérieur comprenant une antenne et un module de circuit intégré disposé sur une page ou couverture de passeport ;
  • Les figures 5, 6, 7, 8 illustrent respectivement un premier, second, troisième et quatrième mode de réalisation de l'invention ;
  • La figure 9 illustre une variante de réalisation de la figure 5 ;
  • La figure 10 illustre l'espacement inter-spires d'une antenne tel qu'imposé par les performances RF recherchées ;
  • La figure 11 illustre l'espacement inter-spires réduit d'une antenne dans la région soumise à contrainte mécanique de flexion.
Brief description of the figures.
  • The figure 1 illustrates a flexion test submitted to a passport booklet;
  • The figure 2 illustrates the passport in profile view showing the binding and the opposite edge;
  • The figure 3 illustrates the appearance of a fold appearing on a cross median of the passport;
  • The figure 4 illustrates a transponder of the prior art comprising an antenna and an integrated circuit module disposed on a passport page or cover;
  • The figures 5 , 6 , 7 , 8 respectively illustrate first, second, third and fourth embodiments of the invention;
  • The figure 9 illustrates an alternative embodiment of the figure 5 ;
  • The figure 10 illustrates the inter-turn spacing of an antenna as dictated by the RF performance sought;
  • The figure 11 illustrates the reduced inter-turn spacing of an antenna in the region subjected to mechanical bending stress.

DescriptionDescription

A la figure 1, un livret 1 notamment de passeport est soumis à un test de flexion comme illustré sur la figure par une pression F exercée au centre et aux bords en réaction.To the figure 1 , a booklet 1 including passport is subjected to a bending test as shown in the figure by a pressure F exerted in the center and the edges in reaction.

La figure 2 illustre le livret en vue de profil montrant la reliure 2 et le bord opposé 3.The figure 2 illustrates the booklet in profile showing the binding 2 and the opposite edge 3.

A la figure 3, les flexions du test donnent naissance à une pliure P sur une médiatrice transversale du livret car il possède une reliure 2 relativement rigide.To the figure 3 , flexing of the test gives rise to a fold P on a transverse mediator of the booklet because it has a relatively rigid binding 2.

Lorsque la flexion est appliquée perpendiculairement à la reliure 2, celle-ci commence à marquer un pli P et la contrainte s'accumule sur le pli. Le pli vient à se propager et provoque un cisaillement des spires d'antenne dans la zone 7 en premier lieu. Puis le cisaillement se propage sur toute la largeur du livret jusqu'aux spires de l'antenne situées proche du bord du livret opposé à la reliure.When the bending is applied perpendicular to the binding 2, it begins to mark a fold P and the stress accumulates on the fold. The fold comes to spread and causes shearing of the antenna turns in zone 7 in the first place. Then the shear spreads over the entire width of the booklet to the antenna turns located near the edge of the book opposite the binding.

A la figure 4, une feuille de passeport de l'art antérieur présente un support plan 4 supportant un transpondeur radiofréquence, un bord longitudinal 2 proche de la reliure de passeport, une antenne de réception par couplage électromagnétique 14 sur le support. L'antenne comporte des spires entourant une surface de couplage centrale ; Les spires s'étendent au moins en partie parallèlement et à proximité du bord longitudinal 2.To the figure 4 , a passport sheet of the prior art has a plane support 4 supporting a radio frequency transponder, a longitudinal edge 2 near the passport binding, an electromagnetic coupling receiving antenna 14 on the support. The antenna has turns surrounding a central coupling surface; The turns extend at least partly parallel and close to the longitudinal edge 2.

L'antenne est ici réalisée en un fil incrusté dans le support. L'antenne est connectée à un micromodule électronique comprenant une puce de circuit intégré radiofréquence 15 par l'intermédiaire des extrémités de connexion 16 et 17. Il n'est pas exclu de prévoir d'autres techniques de réalisation d'antenne connues de l'homme de l'art, telles que la broderie, le transfert d'antenne déjà bobinée, la gravure. Toutefois, pour des questions de performance de communication, l'invention vise de préférence des antennes filaires de section (ou diamètre) sensiblement constante. Toutefois, l'invention peut prévoir un amincissement de la largeur des spires au niveau de la zone 7 en plus d'un espacement inter-spires réduit. L'antenne peut être considérée dans l'absolu seulement par les spires mais aussi avec son substrat pour le maintien des spires entre elles. Elle peut comprendre au moins les spires elles-mêmes et le substrat. Par antenne au sens de l'invention, on peut parler aussi d'insert (inlay en anglais) d'antenne ou de transpondeur radiofréquence avec ou sans puce de circuit intégré connectée. L'antenne peut être finie ou semi-finie dans la mesure où elle peut être destinée à être connectée ou non à un ou plusieurs composants électriques, électronique.The antenna is here made of a wire embedded in the support. The antenna is connected to an electronic micromodule comprising a radiofrequency integrated circuit chip 15 via the connection ends 16 and 17. It is not excluded to provide other antenna production techniques known to the skilled in the art, such as embroidery, already coiled antenna transfer, etching. However, for communication performance issues, the invention preferably targets wire antennas of substantially constant section (or diameter). However, the invention can provide a thinning of the width of the turns at the zone 7 in addition to a reduced inter-turn spacing. The antenna can be considered in the absolute only by the turns but also with its substrate for the maintenance of the turns between them. It can include at least the turns themselves and the substrate. By antenna within the meaning of the invention, it is possible also speak of insert (inlay in English) antenna or radio frequency transponder with or without integrated circuit chip connected. The antenna can be finished or semi-finished insofar as it can be intended to be connected or not to one or more electrical components, electronic.

Le cas échéant dans certaines application, notamment pour objet à interface duale ou objet radiofréquence à antenne passive, l'antenne peut être nue (non connectée à une puce de circuit intégré) ; L'antenne peut être connectée à une capacité.Where appropriate in certain applications, in particular for object with a dual interface or radio frequency object with a passive antenna, the antenna may be bare (not connected to an integrated circuit chip); The antenna can be connected to a capacity.

Les spires de l'antenne ou du moins celles disposées tout le long du bord 2 adjacent à la reliure, présentent un espacement inter-spires sensiblement constant.The turns of the antenna or at least those arranged along the edge 2 adjacent the binding, have a spacing substantially constant spacing.

L'espacement est par exemple couramment compris entre 0.5 et 2 mm pour des fils de diamètre compris entre 50 et 150 µm.The spacing is for example commonly between 0.5 and 2 mm for son diameter between 50 and 150 microns.

Une région 7 des spires située proche du bord longitudinal 2 est une région particulièrement exposée à un axe de contraintes comme symbolisé par une flèche 5.A region 7 of the turns located near the longitudinal edge 2 is a region particularly exposed to a stress axis as symbolized by an arrow 5.

A la figure 5, selon un premier mode de réalisation de l'invention, un support 4 à antenne porte une antenne 14 étendue sur ou parallèlement à une de ses surfaces principales ; Le support à antenne est sensiblement conforme à la figure précédente à une différence près décrite ci-après.To the figure 5 according to a first embodiment of the invention, an antenna support 4 carries an antenna 14 extended on or parallel to one of its main surfaces; The antenna support is substantially in accordance with the preceding figure with a difference described hereinafter.

Comme le support est ici une feuille de passeport, le bord 2 est destiné à être parallèle à une reliure de livret de passeport ; On voit que l'antenne 14 en forme de rectangle comporte des spires parallèles (grand côté du rectangle) et perpendiculaires (petits côtés du rectangle) s'étendant respectivement parallèlement et perpendiculairement au bord longitudinal (2).Since the medium here is a passport sheet, the edge 2 is intended to be parallel to a passport booklet binding; It can be seen that the antenna 14 in the form of a rectangle comprises parallel (large side of the rectangle) and perpendicular (small sides of the rectangle) turns extending respectively parallel and perpendicular to the longitudinal edge (2).

Selon une caractéristique de ce premier mode, au moins une partie des spires disposées dans une région 7 proche du bord 2 adjacent à la reliure, présente un espacement inter-spires ES rapproché par rapport à l'espacement normal EL des spires des autres régions. Autrement dit, les spires parallèles présentent, au moins à un endroit ou région 7, un espacement inter-spires rapproché (ES) par rapport à l'espacement inter-spires (EL) des spires perpendiculaires. (Voir fig. 10-11)According to a characteristic of this first mode, at least a portion of the turns disposed in a region 7 close to the edge 2 adjacent to the binding, has an inter-turn spacing ES close to the normal spacing EL of the turns of the other regions. In other words, the parallel turns have, at least at a place or region 7, a close inter-turn spacing (ES) with respect to the inter-turn spacing (EL) of the perpendicular turns. (See Fig. 10-11 )

De préférence, la portion de surface 7 est située sur une médiane 5 transversale du support 4, s'étendant perpendiculairement au bord longitudinal 2.Preferably, the surface portion 7 is situated on a transverse median of the support 4, extending perpendicularly to the longitudinal edge 2.

Le bord 2 est destiné à être adjacent à une charnière ou reliure du livret.The edge 2 is intended to be adjacent to a hinge or binding of the booklet.

De préférence, les spires rapprochées ont un espacement inter-spires ES compris entre 0,1 et 0.5 mm ; Les spires non rapprochées, ont quant à elles, un espacement inter-spires EL compris entre 0.5 et 2 mm.Preferably, the close turns have an inter-turn spacing ES of between 0.1 and 0.5 mm; The unmated turns, for their part, have an inter-turn spacing EL between 0.5 and 2 mm.

Les fils ont un diamètre compris entre 50 et 150 µm.The wires have a diameter of between 50 and 150 μm.

A la figure 6, selon un second mode de réalisation, sensiblement tout le bord de l'antenne adjacent à la reliure ou au bord 2 est réalisé avec un espacement inter-spires réduit par rapport notamment aux portions de spires disposées perpendiculairement au bord 2.To the figure 6 , according to a second embodiment, substantially the entire edge of the antenna adjacent to the binding or the edge 2 is made with a reduced inter-turn spacing with respect to particular portions of turns disposed perpendicularly to the edge 2.

A la figure 7, l'antenne comprend deux portions 9 et 10 situées dans le prolongement de l'axe de contrainte 5. La portion 10 est située sur les spires opposées à celles proches de la pliure.To the figure 7 , the antenna comprises two portions 9 and 10 located in the extension of the axis of stress 5. The portion 10 is located on the opposite turns to those close to the fold.

A la figure 8, selon un troisième mode de réalisation, les deux côtés 11, 12 de l'antenne s'étendant parallèlement au bord adjacent à la pliure 2 sont réalisées avec un espacement inter-spire réduit ES comparativement aux spires orientées transversalement au bord 2.To the figure 8 according to a third embodiment, the two sides 11, 12 of the antenna extending parallel to the edge adjacent to the fold 2 are made with a reduced inter-turn spacing ES compared to the turns oriented transversely to the edge 2.

A la figure 9, selon un quatrième mode de réalisation, les spires de la région 7 non seulement ont un espacement réduit ES mais elles sont toutes décalées vers la spire interne de l'antenne 14 de manière que la spire externe de l'antenne dans la région 7 se trouve plus éloignée du bord 2 que la spire externe des portions restantes de l'antenne parallèles et adjacentes au bord 2.To the figure 9 according to a fourth embodiment, the turns of the region 7 not only have a reduced spacing ES but they are all shifted towards the inner turn of the antenna 14 so that the outer turn of the antenna in the region 7 is is further away from the edge 2 than the outer turn of the remaining portions of the antenna parallel and adjacent to the edge 2.

Autrement dit, les spires de la région 7 sont rapprochées de la spire interne de l'antenne.In other words, the turns of region 7 are brought closer to the inner turn of the antenna.

On voit que la spire externe de la région 7 est à une distance B du bord 2 qui est supérieure à une distance A du bord 2 aux portions de spire externe parallèle au bord 2, situées en dehors de la région 7.It can be seen that the outer turn of the region 7 is at a distance B from the edge 2 which is greater than a distance A from the edge 2 to the portions of external turn parallel to the edge 2, situated outside the region 7.

A la figure 10, on indique l'espacement inter-spires normal EL d'une antenne dans les régions non soumises à la contrainte de flexion (par exemple dans les portions de l'antenne orientée perpendiculairement à la reliure ou bord 2).To the figure 10 , the normal inter-turn spacing EL of an antenna is indicated in the regions not subjected to the bending stress (for example in the portions of the antenna oriented perpendicularly to the binding or edge 2).

A la figure 11, on indique l'espacement inter-spires réduit ES d'une antenne dans la région soumise à contrainte mécanique de flexion.To the figure 11 , the reduced inter-turn spacing ES of an antenna in the region subjected to mechanical bending stress is indicated.

A titre d'exemple, les valeurs EL sont comprises entre 0.5 et 2 mm.By way of example, the EL values are between 0.5 and 2 mm.

A titre d'exemple, les valeurs ES sont comprises entre 0,1 et 0,5 mm. De préférence ES est compris entre 0,1 et 0,4 mm. Le nombre de spires est à titre indicatif uniquement dans l'exemple compris entre 3 - 7.By way of example, the ES values are between 0.1 and 0.5 mm. Preferably ES is between 0.1 and 0.4 mm. The number of turns is indicative only in the example between 3 - 7.

L'invention peut concerner tout objet portable électronique comportant le transpondeur décrit ci-dessus. En particulier, il peut comprendre un passeport, un livret, le transpondeur étant porté par une feuille ou une couverture du livret.The invention may relate to any portable electronic object comprising the transponder described above. In particular, it may include a passport, a booklet, the transponder being carried by a sheet or cover of the booklet.

Claims (10)

Antenne de champ magnétique pour transpondeur radiofréquence, ladite antenne comportant un support plan (4) avec un bord longitudinal (2), une antenne de réception (14) par couplage électromagnétique sur le support, ledit bord étant destiné à être parallèle à une reliure de livret, ladite antenne comportant des spires parallèles et perpendiculaires s'étendant respectivement parallèlement et perpendiculairement au bord longitudinal (2),
caractérisée en ce que lesdites spires parallèles présentent un espacement inter-spires rapproché (ES) par rapport à l'espacement inter-spires (EL) des spires perpendiculaires.Antenna of magnetic field for radio frequency transponder, said antenna comprising a plane support (4) with a longitudinal edge (2), an antenna receiving (14) by electromagnetic coupling on the support, said edge being intended to be parallel to a binding of booklet, said antenna comprising parallel and perpendicular turns extending respectively parallel and perpendicular to the longitudinal edge (2),
characterized in that said parallel turns have a close inter-turn spacing (ES) with respect to the inter-turn spacing (EL) of the perpendicular turns. Antenne de champ magnétique selon la revendication précédente, caractérisée en ce que lesdites spires parallèles sont localisées dans une région (7) située sensiblement sur une médiane (5) du support, ladite médiane étant perpendiculaire au bord longitudinal (2).Antenna magnetic field according to the preceding claim, characterized in that said parallel turns are located in a region (7) located substantially on a median (5) of the support, said median being perpendicular to the longitudinal edge (2). Antenne de champ magnétique selon l'une quelconque des revendications précédentes, caractérisée en ce que ledit bord (2) est adjacent à une charnière de livret.Magnetic field antenna according to any one of the preceding claims, characterized in that said edge (2) is adjacent to a booklet hinge. Antenne de champ magnétique selon l'une quelconque des revendications précédentes, caractérisée en ce que les spires perpendiculaires ont un espacement inter-spires (EL) compris entre 0,5 et 2 mm.Magnetic field antenna according to one of the preceding claims, characterized in that the perpendicular turns have an inter-turn spacing (EL) of between 0.5 and 2 mm. Antenne de champ magnétique selon l'une quelconque des revendications précédentes, caractérisée en ce que les spires parallèles ont un espacement inter-spires (ES) compris entre 0,1 et 0,5 mm.Magnetic field antenna according to one of the preceding claims, characterized in that the parallel turns have an inter-turn spacing (ES) of between 0.1 and 0.5 mm. Antenne de champ magnétique selon l'une quelconque des revendications précédentes, caractérisée en ce que le fil d'antenne a un diamètre compris entre 50 et 150 µm.Magnetic field antenna according to one of the preceding claims, characterized in that the antenna wire has a diameter of between 50 and 150 μm. Antenne de champ magnétique selon l'une quelconque des revendications précédentes, caractérisée en ce que l'antenne est réalisée en fil incrusté.Antenna magnetic field according to any one of the preceding claims, characterized in that the antenna is made of encrusted wire. Antenne de champ magnétique selon la revendication 2, caractérisée en ce que la spire externe parallèle de la région (7) est située à une distance B du bord longitudinal (2) qui est supérieure à une distance A pour des portions de spire externe parallèle situées en dehors de la région (7).Magnetic field antenna according to Claim 2, characterized in that the external parallel coil of the region (7) is situated at a distance B from the longitudinal edge (2) which is greater than a distance A for portions of parallel external turns located outside the region (7). Objet portable électronique comportant l'antenne de champ magnétique selon l'une des revendications précédentes.An electronic portable object comprising the magnetic field antenna according to one of the preceding claims. Objet portable électronique selon la revendication 9 constituant un passeport, un livret, l'antenne étant portée par une feuille ou une couverture du livret ou passeport.Electronic portable object according to claim 9 constituting a passport, a booklet, the antenna being carried by a sheet or cover of the booklet or passport.
EP11306276.4A 2011-10-03 2011-10-03 High mechanic resistance loop antenna for a passport Withdrawn EP2579389A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP11306276.4A EP2579389A1 (en) 2011-10-03 2011-10-03 High mechanic resistance loop antenna for a passport
SG10201602444TA SG10201602444TA (en) 2011-10-03 2012-10-02 Mechanically resistant loop antenna for a passport
TR2018/02317T TR201802317T4 (en) 2011-10-03 2012-10-02 Mechanically resistant spiral antenna for passport.
EP12769411.5A EP2764576B1 (en) 2011-10-03 2012-10-02 High mechanic resistance loop antenna for a passport
US14/349,204 US20140285395A1 (en) 2011-10-03 2012-10-02 Mechanically resistant loop antenna for a passport
PCT/EP2012/069409 WO2013050344A1 (en) 2011-10-03 2012-10-02 Mechanically resistant loop antenna for a passport
PT127694115T PT2764576T (en) 2011-10-03 2012-10-02 High mechanic resistance loop antenna for a passport
JP2014532438A JP2014535184A (en) 2011-10-03 2012-10-02 Durable structure loop antenna for passport
SG11201400756XA SG11201400756XA (en) 2011-10-03 2012-10-02 Mechanically resistant loop antenna for a passport
KR1020147011855A KR20140071481A (en) 2011-10-03 2012-10-02 Mechanically resistant loop antenna for a passport

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11306276.4A EP2579389A1 (en) 2011-10-03 2011-10-03 High mechanic resistance loop antenna for a passport

Publications (1)

Publication Number Publication Date
EP2579389A1 true EP2579389A1 (en) 2013-04-10

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EP11306276.4A Withdrawn EP2579389A1 (en) 2011-10-03 2011-10-03 High mechanic resistance loop antenna for a passport
EP12769411.5A Active EP2764576B1 (en) 2011-10-03 2012-10-02 High mechanic resistance loop antenna for a passport

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP12769411.5A Active EP2764576B1 (en) 2011-10-03 2012-10-02 High mechanic resistance loop antenna for a passport

Country Status (8)

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US (1) US20140285395A1 (en)
EP (2) EP2579389A1 (en)
JP (1) JP2014535184A (en)
KR (1) KR20140071481A (en)
PT (1) PT2764576T (en)
SG (2) SG11201400756XA (en)
TR (1) TR201802317T4 (en)
WO (1) WO2013050344A1 (en)

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JP2014535184A (en) 2014-12-25
KR20140071481A (en) 2014-06-11
US20140285395A1 (en) 2014-09-25
TR201802317T4 (en) 2018-03-21
SG10201602444TA (en) 2016-05-30
EP2764576B1 (en) 2017-11-29
PT2764576T (en) 2018-02-26
SG11201400756XA (en) 2014-06-27
WO2013050344A1 (en) 2013-04-11
EP2764576A1 (en) 2014-08-13

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