EP3721504B1 - Pcb antenna, electronic circuit and item of electronic equipment provided with such an antenna - Google Patents

Pcb antenna, electronic circuit and item of electronic equipment provided with such an antenna Download PDF

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Publication number
EP3721504B1
EP3721504B1 EP18811313.8A EP18811313A EP3721504B1 EP 3721504 B1 EP3721504 B1 EP 3721504B1 EP 18811313 A EP18811313 A EP 18811313A EP 3721504 B1 EP3721504 B1 EP 3721504B1
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EP
European Patent Office
Prior art keywords
support plate
antenna
electrically conductive
positioning portions
circuit
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.)
Active
Application number
EP18811313.8A
Other languages
German (de)
French (fr)
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EP3721504A1 (en
Inventor
Romain DEJARDIN
Serge CONTAL
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.)
Sagemcom Broadband SAS
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Sagemcom Broadband SAS
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Filing date
Publication date
Application filed by Sagemcom Broadband SAS filed Critical Sagemcom Broadband SAS
Publication of EP3721504A1 publication Critical patent/EP3721504A1/en
Application granted granted Critical
Publication of EP3721504B1 publication Critical patent/EP3721504B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • 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
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • 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
    • H01Q1/2291—Supports; Mounting means by structural association with other equipment or articles used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the present invention relates to the field of radio frequency transmission.
  • Electronic circuits comprising a support plate carrying electronic components connected to electrically conductive tracks printed on the support plate.
  • one of the tracks is connected to an antenna.
  • the antenna can have several shapes. There are antennas formed directly by conductive tracks extending on the support plate. This, however, increases the bulk of the support plate. There are also separate antennas connected to the conductive tracks of the support plate via a connector and electronic cables. This complicates the manufacture of the electronic circuit and requires providing means for fixing the antenna in a housing housing the electronic circuit.
  • An aim of the invention is to provide a means for simplifying the manufacture of electronic antenna circuits without increasing their bulk.
  • an antenna according to claim 1 is provided.
  • the antenna is arranged to be fixed on one edge of the printed circuit board, which limits the grip of the antenna on the printed circuit plate and the connection to the printed circuit can be made in a simple manner from the input section which extends opposite one face of said plate.
  • the clamping means comprise an elastically deformable portion connecting at least one of the positioning parts to the rest of the body to return said positioning part to a position in which the passage has a width less than a thickness of the support plate.
  • This method of fixing is particularly simple since the tightening force is only the result of the elasticity of the fixing body without using external tightening means.
  • the input section is positioned to establish an electromagnetic coupling with an electrically conductive track of the support plate.
  • the antenna circuit comprises two contacts mounted in one of the positioning parts to have one end extending elastically projecting from said positioning part facing the other positioning part to form two entry sections.
  • the radiating section is in relief.
  • the invention also relates to an electronic circuit according to claim 5.
  • the invention finally relates to electronic equipment comprising a housing in which such an electronic circuit is housed, the antenna also extending in the housing in the vicinity of an exterior wall thereof to have a radiating field beyond this exterior wall of the housing.
  • the antenna 1 comprises a fixing body 2, in electrically insulating material, carrying an electrically conductive circuit generally designated at 3.
  • the fixing body 2 comprises two positioning parts 2.1, 2.2 delimiting between them a passage delimited by parallel sides separated by a distance sufficient to receive an edge of the plate support 10.
  • the fixing body 2 here has a thickness of 5.25 mm and is made of ABS with a permittivity Er of approximately 2.8.
  • the fixing body 2 comprises means for clamping the support plate 10 against at least one of the positioning parts 2.1, 2.2.
  • the clamping means comprise an elastically deformable portion connecting the positioning parts 2.1, 2.2 to the rest of the body to return said positioning parts to a position in which the passage has a width less than a thickness of the support plate 10 in such a way that the edge of the support plate 10 is clamped in the passage by the positioning parts 2.1, 2.2 which elastically pinch the edge of the support plate 10.
  • Circuit 3 comprises at least one signal input section and a radiating section 5.
  • the radiating section 5 is in relief, that is to say it extends over a non-flat surface and more precisely here curved around a single axis.
  • the inlet section is carried by the positioning part 2.1 to extend facing the face 10.1 of the support plate 10.
  • Circuit 3 is arranged to be single-band or multi-band. Circuit 3 has for example here a frequency of 2.45 GHz for use in the 2.4 - 2.5 GHz frequency band used for wireless local networks conforming to the IEEE 802.11 standard.
  • circuit 3 has an impedance of 50 ohms, and is arranged to present a return loss (or “return loss”) of at most 10 dB and a conversion rate by at least 70%, that is to say that 70% of the energy consumed is radiated.
  • return loss or “return loss”
  • the antenna 1 extends in the housing in the vicinity of an exterior wall 100 thereof to have a radiating field beyond this exterior wall 100 of the housing.
  • the input section bearing the numerical reference 4 is positioned to establish an electromagnetic coupling with an electrically conductive track 12 of the support plate 10.
  • the inlet section 4 extends parallel to the track 12 and facing it.
  • the input section 4 is separated from the track 12 by a distance of between 1 mm and 5 mm.
  • the conductive track 12 has a width of 0.5 mm with a main section of length 11 of 7.50 mm and two end sections, perpendicular to the main section, having a length 12 of 3.65 mm.
  • the input section 4 has the same length and the same width as the main section of the conductive track 12.
  • the input section 4 has a first end connected to a fictitious mass 8 of length 13 of 6.25 mm by a intermediate section of length 15 of 2.5 mm and a second end connected to the radiating section 5 by an intermediate section of length 14 of 8.05 mm.
  • the radiating section 5 has substantially a U shape having a branch whose free end is connected to the intermediate section of length 14 and another free branch.
  • the temples have a length 16 of 8.94 mm.
  • the fixing body 2 here has a general U shape with two flat exterior surfaces connected to each other by a concave curved surface.
  • the flat exterior surfaces are parallel to the sides of the passage.
  • the radiating section 5 extends over part of the flat exterior surface secured to the positioning part 2.1 and over the curved exterior surface.
  • the circuit 11 comprises two electrically conductive areas 13, 14 extending on the face 10.1 of the support plate 10.
  • Circuit 3 comprises two contacts 6, 7 mounted in positioning part 2.1 to have one end extending elastically projecting from said positioning part 2.1 in the passage to be elastically applied against the conductive pads 13, 14. Contacts 6 , 7 thus form two input sections of circuit 3.
  • the fixing body 2 here has a general U shape with a cylindrical exterior surface of circular section.
  • the radiating section 5 extends over said exterior surface.
  • the fixing body can be obtained by molding a single part or by assembling several parts.
  • the fixing body may have a shape other than that described and for example a parallelepiped shape.
  • the clamping means may comprise an element screwed into one of the positioning parts of the fixing body to press the support plate against the other of the positioning parts.
  • the antenna circuit can be placed on the fixing body then possibly covered with varnish, or embedded in the material of the fixing body.
  • the body can be made of plastic material, such as ABS, or not, like ceramic.
  • the electrical circuit 3 can be arranged to operate in other frequency bands and for example the LTE or GSM bands.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Electric Clocks (AREA)

Description

La présente invention concerne le domaine de la transmission radiofréquence.The present invention relates to the field of radio frequency transmission.

ETAT DE LA TECHNIQUESTATE OF THE TECHNIQUE

Il est connu des circuits électroniques comprenant une plaque support portant des composants électroniques raccordés à des pistes électriquement conductrices imprimées sur la plaque support.Electronic circuits are known comprising a support plate carrying electronic components connected to electrically conductive tracks printed on the support plate.

Lorsque le circuit électronique est dédié à la transmission de signaux par radiofréquence, l'une des pistes est raccordée à une antenne.When the electronic circuit is dedicated to the transmission of signals by radio frequency, one of the tracks is connected to an antenna.

L'antenne peut avoir plusieurs formes. Il existe des antennes formées directement par des pistes conductrices s'étendant sur la plaque support. Ceci augmente cependant l'encombrement de la plaque support. Il existe également des antennes séparées reliées aux pistes conductrices de la plaque support par l'intermédiaire d'un connecteur et de câbles électroniques. Ceci complique la fabrication du circuit électronique et oblige un prévoir des moyens de fixation de l'antenne dans un boîtier hébergeant le circuit électronique.The antenna can have several shapes. There are antennas formed directly by conductive tracks extending on the support plate. This, however, increases the bulk of the support plate. There are also separate antennas connected to the conductive tracks of the support plate via a connector and electronic cables. This complicates the manufacture of the electronic circuit and requires providing means for fixing the antenna in a housing housing the electronic circuit.

Les documents US-A-2014/159990 et US-A-2010/127938 décrivent des antennes montées sur un bord d'une plaque de circuit imprimé.The documents US-A-2014/159990 And US-A-2010/127938 describe antennas mounted on one edge of a printed circuit board.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

Un but de l'invention est de fournir un moyen pour simplifier la fabrication des circuits électroniques à antenne sans en augmenter l'encombrement.An aim of the invention is to provide a means for simplifying the manufacture of electronic antenna circuits without increasing their bulk.

BREF EXPOSE DE L'INVENTIONBRIEF STATEMENT OF THE INVENTION

A cet effet, on prévoit, selon l'invention, une antenne conforme à la revendication 1.For this purpose, according to the invention, an antenna according to claim 1 is provided.

Ainsi, l'antenne est agencée pour être fixée sur un bord de la plaque de circuit imprimé, ce qui limite l'emprise de l'antenne sur la plaque de circuit imprimé et la connexion au circuit imprimé peut être réalisée de manière simple à partir du tronçon d'entrée qui s'étend en regard d'une face de ladite plaque.Thus, the antenna is arranged to be fixed on one edge of the printed circuit board, which limits the grip of the antenna on the printed circuit plate and the connection to the printed circuit can be made in a simple manner from the input section which extends opposite one face of said plate.

Avantageusement, les moyens de serrage comprennent une portion élastiquement déformable reliant au moins une des parties de positionnement au reste du corps pour rappeler ladite partie de positionnement dans une position dans laquelle le passage a une largeur inférieure à une épaisseur de la plaque support.Advantageously, the clamping means comprise an elastically deformable portion connecting at least one of the positioning parts to the rest of the body to return said positioning part to a position in which the passage has a width less than a thickness of the support plate.

Ce mode de fixation est particulièrement simple puisque l'effort de serrage n'est que le résultat de l'élasticité du corps de fixation sans faire appel à des moyens de serrage extérieurs.This method of fixing is particularly simple since the tightening force is only the result of the elasticity of the fixing body without using external tightening means.

Selon un premier mode de réalisation, le tronçon d'entrée est positionné pour établir un couplage électromagnétique avec une piste électriquement conductrice de la plaque support.According to a first embodiment, the input section is positioned to establish an electromagnetic coupling with an electrically conductive track of the support plate.

Ce mode de connexion est simple à fabriquer et peu fragile.This connection method is simple to manufacture and not very fragile.

Selon un exemple qui ne fait pas partie de l'invention, le circuit de l'antenne comprend deux contacts montés dans une des parties de positionnement pour avoir une extrémité s'étendant élastiquement en saillie de ladite partie de positionnement en regard de l'autre partie de positionnement pour former deux tronçons d'entrée.According to an example which is not part of the invention, the antenna circuit comprises two contacts mounted in one of the positioning parts to have one end extending elastically projecting from said positioning part facing the other positioning part to form two entry sections.

Avantageusement, le tronçon rayonnant est en relief.Advantageously, the radiating section is in relief.

Ceci améliore les performances d'émission/réception de l'antenne.This improves the transmission/reception performance of the antenna.

L'invention a également pour objet un circuit électronique selon la revendication 5.The invention also relates to an electronic circuit according to claim 5.

L'invention concerne enfin un équipement électronique comprenant un boîtier dans lequel est logé un tel circuit électronique, l'antenne s'étendant elle aussi dans le boîtier au voisinage d'une paroi extérieure de celui-ci pour avoir un champ rayonnant au-delà de cette paroi extérieure du boîtier.The invention finally relates to electronic equipment comprising a housing in which such an electronic circuit is housed, the antenna also extending in the housing in the vicinity of an exterior wall thereof to have a radiating field beyond this exterior wall of the housing.

D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui suit de modes de réalisation particuliers non limitatifs de l'invention.Other characteristics and advantages of the invention will emerge on reading the following description of particular non-limiting embodiments of the invention.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

Il sera fait référence aux dessins annexés, parmi lesquels :

  • la figure 1 est une vue schématique partielle, en perspective, d'un équipement électronique selon un premier mode de réalisation de l'invention ;
  • la figure 2 est une vue analogue à la figure 1 d'un équipement électronique selon un deuxième mode de réalisation de l'invention.
Reference will be made to the attached drawings, including:
  • there figure 1 is a partial schematic perspective view of electronic equipment according to a first embodiment of the invention;
  • there figure 2 is a view analogous to the figure 1 of electronic equipment according to a second embodiment of the invention.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

En référence aux figures, l'invention est ici décrite en application à un équipement électronique comportant un boîtier enfermant un circuit électronique.With reference to the figures, the invention is described here in application to electronic equipment comprising a housing enclosing an electronic circuit.

Le circuit électronique comprend :

  • une plaque support 10 (communément appelée PCB de l'anglais « printed circuit board ») ayant une première face 10.1 et une deuxième face 10.2,
  • des pistes électriquement conductrices 11 s'étendant sur la première face 10.1 et sur la deuxième face 10.2 de la plaque support 10 pour former un circuit imprimé,
  • des composants électroniques portés par la plaque support 10 et électriquement connectés aux pistes conductrices 11,
  • une antenne, généralement désignée en 1.
The electronic circuit includes:
  • a support plate 10 (commonly called PCB from the English “printed circuit board”) having a first face 10.1 and a second face 10.2,
  • electrically conductive tracks 11 extending on the first face 10.1 and on the second face 10.2 of the support plate 10 to form a printed circuit,
  • electronic components carried by the support plate 10 and electrically connected to the conductive tracks 11,
  • an antenna, generally designated 1.

L'antenne 1 comprend un corps de fixation 2, en matériau électriquement isolant, portant un circuit électriquement conducteur généralement désigné en 3. Le corps de fixation 2 comprend deux parties de positionnement 2.1, 2.2 délimitant entre elles un passage délimité par des flancs parallèles séparés d'une distance suffisante pour recevoir un bord de la plaque support 10. Le corps de fixation 2 a ici une épaisseur de 5,25 mm et est réalisé en ABS avec une permittivité Er d'environ 2,8.The antenna 1 comprises a fixing body 2, in electrically insulating material, carrying an electrically conductive circuit generally designated at 3. The fixing body 2 comprises two positioning parts 2.1, 2.2 delimiting between them a passage delimited by parallel sides separated by a distance sufficient to receive an edge of the plate support 10. The fixing body 2 here has a thickness of 5.25 mm and is made of ABS with a permittivity Er of approximately 2.8.

Le corps de fixation 2 comporte des moyens de serrage de la plaque support 10 contre au moins l'une des parties de positionnement 2.1, 2.2. Les moyens de serrage comprennent une portion élastiquement déformable reliant les parties de positionnement 2.1, 2.2 au reste du corps pour rappeler lesdites parties de positionnement dans une position dans laquelle le passage a une largeur inférieure à une épaisseur de la plaque support 10 de telle manière que le bord de la plaque support 10 soit serré dans le passage par les parties de positionnement 2.1, 2.2 qui pincent élastiquement le bord de la plaque support 10.The fixing body 2 comprises means for clamping the support plate 10 against at least one of the positioning parts 2.1, 2.2. The clamping means comprise an elastically deformable portion connecting the positioning parts 2.1, 2.2 to the rest of the body to return said positioning parts to a position in which the passage has a width less than a thickness of the support plate 10 in such a way that the edge of the support plate 10 is clamped in the passage by the positioning parts 2.1, 2.2 which elastically pinch the edge of the support plate 10.

Le circuit 3 comporte au moins un tronçon d'entrée de signal et un tronçon rayonnant 5. Le tronçon rayonnant 5 est en relief, c'est-à-dire qu'il s'étend sur une surface non plane et plus précisément ici incurvée autour d'un seul axe.Circuit 3 comprises at least one signal input section and a radiating section 5. The radiating section 5 is in relief, that is to say it extends over a non-flat surface and more precisely here curved around a single axis.

Le tronçon d'entrée est porté par la partie de positionnement 2.1 pour s'étendre en regard de la face 10.1 de la plaque support 10.The inlet section is carried by the positioning part 2.1 to extend facing the face 10.1 of the support plate 10.

Le circuit 3 est agencé pour être monobande ou multibande. Le circuit 3 a par exemple ici une fréquence de 2,45 GHz pour une utilisation dans la bande de fréquences 2,4 - 2,5 GHz utilisées pour les réseaux locaux sans fil conforme à la norme IEEE 802.11.Circuit 3 is arranged to be single-band or multi-band. Circuit 3 has for example here a frequency of 2.45 GHz for use in the 2.4 - 2.5 GHz frequency band used for wireless local networks conforming to the IEEE 802.11 standard.

De préférence, le circuit 3 a une impédance de 50 ohms, et est agencé pour présenter une perte de retour (ou « return loss ») d'au plus 10 dB et un taux de conversion d'au moins 70%, c'est-à-dire que 70% de l'énergie consommée est rayonnée.Preferably, circuit 3 has an impedance of 50 ohms, and is arranged to present a return loss (or “return loss”) of at most 10 dB and a conversion rate by at least 70%, that is to say that 70% of the energy consumed is radiated.

L'antenne 1 s'étend dans le boîtier au voisinage d'une paroi extérieure 100 de celui-ci pour avoir un champ rayonnant au-delà de cette paroi extérieure 100 du boîtier.The antenna 1 extends in the housing in the vicinity of an exterior wall 100 thereof to have a radiating field beyond this exterior wall 100 of the housing.

Dans le mode de réalisation de la figure 1, le tronçon d'entrée, portant la référence numérique 4, est positionné pour établir un couplage électromagnétique avec une piste électriquement conductrice 12 de la plaque support 10. A cette fin, lorsque le corps de fixation 2 est correctement positionné sur le bord de la plaque support 10, le tronçon d'entrée 4 s'étend parallèlement à la piste 12 et en regard de celle-ci. De préférence, le tronçon d'entrée 4 est séparé de la piste 12 d'une distance comprise entre 1 mm et 5 mm.In the embodiment of the figure 1 , the input section, bearing the numerical reference 4, is positioned to establish an electromagnetic coupling with an electrically conductive track 12 of the support plate 10. To this end, when the fixing body 2 is correctly positioned on the edge of the support plate 10, the inlet section 4 extends parallel to the track 12 and facing it. Preferably, the input section 4 is separated from the track 12 by a distance of between 1 mm and 5 mm.

La piste conductrice 12 a une largeur de 0,5 mm avec un tronçon principal de longueur 11 de 7,50 mm et deux tronçons d'extrémité, perpendiculaire au tronçon principal, ayant une longueur 12 de 3,65mm. Le tronçon d'entrée 4 a la même longueur et la même largeur que le tronçon principal de la piste conductrice 12. Le tronçon d'entrée 4 a une première extrémité raccordée à une masse fictive 8 de longueur 13 de 6,25 mm par un tronçon intermédiaire de longueur 15 de 2,5 mm et une deuxième extrémité raccordée au tronçon rayonnant 5 par un tronçon intermédiaire de longueur 14 de 8,05 mm. Le tronçon rayonnant 5 a sensiblement une forme de U ayant une branche dont l'extrémité libre est reliée au tronçon intermédiaire de longueur 14 et une autre branche libre. Les branches ont une longueur 16 de 8,94 mm. Ces valeurs numériques ne sont données qu'à titre d'exemple.The conductive track 12 has a width of 0.5 mm with a main section of length 11 of 7.50 mm and two end sections, perpendicular to the main section, having a length 12 of 3.65 mm. The input section 4 has the same length and the same width as the main section of the conductive track 12. The input section 4 has a first end connected to a fictitious mass 8 of length 13 of 6.25 mm by a intermediate section of length 15 of 2.5 mm and a second end connected to the radiating section 5 by an intermediate section of length 14 of 8.05 mm. The radiating section 5 has substantially a U shape having a branch whose free end is connected to the intermediate section of length 14 and another free branch. The temples have a length 16 of 8.94 mm. These numerical values are given as an example only.

On notera que le corps de fixation 2 a ici une forme générale en U avec deux surfaces extérieures planes reliées l'une à l'autre par une surface incurvée concave. Les surfaces extérieures planes sont parallèles aux flancs du passage. Le tronçon rayonnant 5 s'étend sur une partie de la surface extérieure plane solidaire de la partie de positionnement 2.1 et sur la surface extérieure incurvée.Note that the fixing body 2 here has a general U shape with two flat exterior surfaces connected to each other by a concave curved surface. The flat exterior surfaces are parallel to the sides of the passage. The radiating section 5 extends over part of the flat exterior surface secured to the positioning part 2.1 and over the curved exterior surface.

Dans l'exemple qui ne fait pas partie de l'invention de la figure 2, le circuit 11 comprend deux plages électriquement conductrices 13, 14 s'étendant sur la face 10.1 de la plaque support 10.In the example which is not part of the invention of the figure 2 , the circuit 11 comprises two electrically conductive areas 13, 14 extending on the face 10.1 of the support plate 10.

Le circuit 3 comprend deux contacts 6, 7 montés dans la partie de positionnement 2.1 pour avoir une extrémité s'étendant élastiquement en saillie de ladite partie de positionnement 2.1 dans le passage pour être élastiquement appliqués contre les plages conductrices 13, 14. Les contacts 6, 7 forment ainsi deux tronçons d'entrée du circuit 3.Circuit 3 comprises two contacts 6, 7 mounted in positioning part 2.1 to have one end extending elastically projecting from said positioning part 2.1 in the passage to be elastically applied against the conductive pads 13, 14. Contacts 6 , 7 thus form two input sections of circuit 3.

On notera que le corps de fixation 2 a ici une forme générale en U avec une surface extérieure cylindrique à section circulaire. Le tronçon rayonnant 5 s'étend sur ladite surface extérieure.Note that the fixing body 2 here has a general U shape with a cylindrical exterior surface of circular section. The radiating section 5 extends over said exterior surface.

Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits mais englobe toute variante entrant dans le champ de l'invention telle que définie par les revendications.Of course, the invention is not limited to the embodiments described but encompasses any variant falling within the scope of the invention as defined by the claims.

En particulier, le corps de fixation peut être obtenu par moulage d'une seule pièce ou par assemblage de plusieurs pièces.In particular, the fixing body can be obtained by molding a single part or by assembling several parts.

Le corps de fixation peut avoir une autre forme que celle décrite et par exemple une forme parallélépipédique.The fixing body may have a shape other than that described and for example a parallelepiped shape.

Les moyens de serrage peuvent comprendre un élément vissé dans l'une des parties de positionnement du corps de fixation pour plaquer la plaque support contre l'autre des parties de positionnement.The clamping means may comprise an element screwed into one of the positioning parts of the fixing body to press the support plate against the other of the positioning parts.

Le circuit de l'antenne peut être déposé sur le corps de fixation puis éventuellement recouvert d'un vernis, ou noyé dans le matériau du corps de fixation.The antenna circuit can be placed on the fixing body then possibly covered with varnish, or embedded in the material of the fixing body.

Le corps peut être en matière plastique, telle que de l'ABS, ou non, comme une céramique.The body can be made of plastic material, such as ABS, or not, like ceramic.

Le circuit électrique 3 peut être agencé pour fonctionner dans d'autres bandes de fréquences et par exemple les bandes LTE ou GSM.The electrical circuit 3 can be arranged to operate in other frequency bands and for example the LTE or GSM bands.

Claims (7)

  1. An antenna (1) comprising a fastener body (2) made of electrically insulating material and carrying an electrically conductive circuit (3) having at least one signal input segment (4) and a radiating segment (5), the fastener body comprising two positioning portions (2.1, 2.2) defining between them a passage of dimensions suitable for receiving an edge of a printed circuit support plate (10), the input segment (4) being carried by one of the positioning portions (2.1) to extend facing a face (10.1) of said support plate, characterized in that the body includes clamping means for clamping the support plate against at least one of the positioning portions, the input segment (4) is positioned to establish electromagnetic coupling with an electrically conductive track (12) of the support plate (10).
  2. An antenna according to claim 1, wherein the clamping means comprise an elastically deformable region connecting at least one of the positioning portions (2.1, 2.2) to the remainder of the fastener body (2) in order to urge said positioning portion into a position in which the passage has a width that is less that the thickness of the support plate (10).
  3. An antenna according to any preceding claim, wherein the radiating portion (5) is in relief.
  4. An antenna according to claim 3, wherein the radiating portion (5) is curved.
  5. An electronic circuit comprising:
    · a support plate (10) carrying electronic components connected to electrically conductive tracks (11) extending over a at least one first face (10.1, 10.2) of the support plate,
    · an antenna (1) comprising a fastener body (2) carrying an electrically conductive circuit (3) having at least one signal input segment (4) and a radiating segment (5), the fastener body comprising two positioning portions (2.1, 2.2) defining between them a passage in which an edge of the support plate is clamped, characterized in that the input segment is carried by one of the positioning portions (2.1) so as to extend facing one of the faces (10.1) of said support plate and said support plate (10) is provided with at least one electrically conductive track (12) extending in the passage to establish electromagnetic coupling between the input segment (4) and said electrically conductive track (12) of the support plate (10).
  6. A circuit according to claim 5, wherein the positioning portions (2.1, 2.2) pinch the edge of the support plate (10) resiliently.
  7. Electronic equipment comprising a housing receiving an electronic circuit according to any one of claims 5 and 6, the antenna (1) also extending in the housing in the vicinity of an outside wall (100) thereof in order to have a radiation field beyond this outside wall of the housing.
EP18811313.8A 2017-12-18 2018-12-06 Pcb antenna, electronic circuit and item of electronic equipment provided with such an antenna Active EP3721504B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1762396A FR3075484B1 (en) 2017-12-18 2017-12-18 ANTENNA FOR PRINTED CIRCUIT, ELECTRONIC CIRCUIT AND ELECTRONIC EQUIPMENT PROVIDED WITH SUCH ANTENNA
PCT/EP2018/083850 WO2019121045A1 (en) 2017-12-18 2018-12-06 Pcb antenna, electronic circuit and item of electronic equipment provided with such an antenna

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EP3721504A1 EP3721504A1 (en) 2020-10-14
EP3721504B1 true EP3721504B1 (en) 2024-04-17

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EP18811313.8A Active EP3721504B1 (en) 2017-12-18 2018-12-06 Pcb antenna, electronic circuit and item of electronic equipment provided with such an antenna

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US (1) US11532865B2 (en)
EP (1) EP3721504B1 (en)
CN (1) CN111480264A (en)
BR (1) BR112020011485A2 (en)
FR (1) FR3075484B1 (en)
WO (1) WO2019121045A1 (en)

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FR3075484B1 (en) * 2017-12-18 2021-10-15 Sagemcom Broadband Sas ANTENNA FOR PRINTED CIRCUIT, ELECTRONIC CIRCUIT AND ELECTRONIC EQUIPMENT PROVIDED WITH SUCH ANTENNA

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Publication number Publication date
EP3721504A1 (en) 2020-10-14
US20210143521A1 (en) 2021-05-13
US11532865B2 (en) 2022-12-20
FR3075484B1 (en) 2021-10-15
WO2019121045A1 (en) 2019-06-27
FR3075484A1 (en) 2019-06-21
BR112020011485A2 (en) 2020-11-17
CN111480264A (en) 2020-07-31

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