EP0923152A1 - Portable radiotelephone with fixed rod antenna 0 - Google Patents

Portable radiotelephone with fixed rod antenna 0 Download PDF

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Publication number
EP0923152A1
EP0923152A1 EP98403104A EP98403104A EP0923152A1 EP 0923152 A1 EP0923152 A1 EP 0923152A1 EP 98403104 A EP98403104 A EP 98403104A EP 98403104 A EP98403104 A EP 98403104A EP 0923152 A1 EP0923152 A1 EP 0923152A1
Authority
EP
European Patent Office
Prior art keywords
antenna
card
terminal according
wire
envelope
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Withdrawn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
EP98403104A
Other languages
German (de)
French (fr)
Inventor
Jean-Christophe Senac
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.)
Sagem SA
Original Assignee
Sagem 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 Sagem SA filed Critical Sagem SA
Publication of EP0923152A1 publication Critical patent/EP0923152A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material

Definitions

  • the present invention relates to the general field of terminals portable like those of cellular telephony, for example of the type GSM, or radio handsets associated with a fixed base of so-called cordless telephones.
  • Radio links require an antenna longer than that of the terminal body so that the printed circuit board, carrying the electronic components of the terminal, has a zone at the end connection to which a fixed external antenna wire is connected which extends an antenna track from the map.
  • At least the free end of the antenna wire is housed in a cap in plastic material, intended to avoid any risk of injury to users.
  • the antenna wire is welded to the card, the radio components of it at the desired frequencies, then we go up the whole in the case.
  • we first carry out an electrical assembly which we have easy access to adjust it on the table and only then that we dress the assembly by means of a case and a cap antenna.
  • This approach has two drawbacks. All first, the radio adjustments, on the table, are carried out under conditions different from the actual operating conditions, since the wire antenna is then bare, without its coupling with the cap.
  • the antenna settings do not can be carried out only after mounting in the case since it carries the antenna through a printed circuit connection ring.
  • the antenna must then be in its mechanical form final, that is to say with a rigid envelope overmolded on the wire antenna to stiffen the assembly and allow the antenna to be pushed back in the housing and extract it by pulling on its end, sliding in the ring, two opposite stops being limiting its stroke.
  • the antenna envelope contains a adjustment element carried by the casing.
  • the constraint mechanical, rigidity of the antenna does not exist and, even, we can estimate that the risk of injury mentioned at the beginning is reduced if the antenna is very flexible, i.e. with a small section wire free mounted in a flexible envelope.
  • the present invention aims to allow easy and inexpensive adjustment of a fixed portable terminal antenna.
  • the invention relates to a portable radio terminal, comprising a fixed antenna comprising a wire, at least the free end of which is surrounded by a protective envelope, connected to a circuit board printed and protruding out of a box containing the card, characterized by the fact that the antenna is in one piece and the envelope is overmolded on the wire.
  • the antenna constitutes a component of the card, electrically connected to the other components and immediately appearing in a form final, allowing its adjustment, no additional operation assembly of its elements is not necessary.
  • Overmolding can be made with any flexible material and therefore keep on the antenna a flexibility to prevent the risk of injury.
  • the radiotelephony terminal shown has a box 1 containing a printed circuit board 2 carrying various electronic circuits and particular of the transceiver circuits 3 connected to an antenna track 4 which extends, out of the housing 1, by a fixed external antenna 6.
  • the external antenna 6 comprises an antenna wire or central core 7 surrounded a plastic molding 8, here extending over the entire length of the antenna 6.
  • plastic material 8 By the choice of plastic material 8 and its limited thickness, the antenna 6 has guaranteed flexibility limiting the risk of personal injury.
  • the section of the envelope 10 could be reduced in the section connecting its zone free end at the foot of the antenna 6.
  • the end of the wire 7 at the bottom of the antenna 6 is stripped and connected electrically at the end of track 4, precisely it is welded in this example to a track 5 ending this track 4.
  • the antenna 6 is thus monobloc and connected directly, irremovably, to the beach 5. It constitutes a fixed element of the card 2, having characteristics fixed or fixed and therefore stable electrics for making adjustments final. In particular, the absence of a connector at the foot of the antenna prevents the problems of pollution and wear at this level, with the problems of parasitic reflections which they involve.
  • the antenna 6 is fixed here to the housing 1.
  • it comprises, in the foot area, a radial protuberance 9, or partial ring, cooperating with a recess in the thickness of the wall of the housing 1, so to prevent any axial translation of the antenna 6.
  • the above recess has an angular extension, around the axis of the antenna 6, limited to the angular size of the protuberance 9, so that the antenna 6 is here fully blocked, without possibility of rotation.
  • the antenna 6 present, in this example, a general orientation inclined on a longitudinal plane of the box 1, like the map of the card 2. More specifically, the antenna 6 comprises a foot section 10 substantially parallel to the plane of the card 2 and a free end section 11 deviating from this plane, towards the rear of the housing 1. It is thus, at least partially, separated from the head of the user, so that radio transmission is less affected by it and is therefore more omnidirectional in use.

Abstract

The antenna outer molding protection is carried out separately to the molding on the main body, allowing adjustment of the wiring to solder the wiring to the printed circuit board. Thus a separate antenna adjustment ring is not needed.

Description

La présente invention concerne le domaine général des terminaux portables comme ceux de la téléphonie cellulaire, par exemple du type GSM, ou encore les combinés radio associés à une base fixe des téléphones dits sans fil.The present invention relates to the general field of terminals portable like those of cellular telephony, for example of the type GSM, or radio handsets associated with a fixed base of so-called cordless telephones.

Les liaisons radio nécessitent une antenne de longueur supérieure à celle du corps du terminal si bien que la carte de circuit imprimé, portant les composants électroniques du terminal, comporte en bout une zone de connexion à laquelle se raccorde un fil d'antenne externe fixe qui prolonge une piste-antenne de la carte.Radio links require an antenna longer than that of the terminal body so that the printed circuit board, carrying the electronic components of the terminal, has a zone at the end connection to which a fixed external antenna wire is connected which extends an antenna track from the map.

Au moins l'extrémité libre du fil d'antenne est logée dans un capuchon en matière plastique, destiné à éviter tout risque de blessure aux utilisateurs. En fabrication, on soude le fil d'antenne à la carte, on règle les composants radio de celle-ci aux fréquences voulues, puis on monte l'ensemble dans le boítier. Bref, on réalise d'abord un montage électrique auquel on a facilement accès pour le régler sur table et ce n'est qu'ensuite que l'on habille le montage au moyen d'un boítier et d'un capuchon d'antenne. Cette façon de procéder présente deux inconvénients. Tout d'abord, les réglages radio, sur table, sont effectués dans des conditions différentes des conditions réelles de fonctionnement, puisque le fil d'antenne est alors nu, sans son couplage avec le capuchon.At least the free end of the antenna wire is housed in a cap in plastic material, intended to avoid any risk of injury to users. In manufacturing, the antenna wire is welded to the card, the radio components of it at the desired frequencies, then we go up the whole in the case. In short, we first carry out an electrical assembly which we have easy access to adjust it on the table and only then that we dress the assembly by means of a case and a cap antenna. This approach has two drawbacks. All first, the radio adjustments, on the table, are carried out under conditions different from the actual operating conditions, since the wire antenna is then bare, without its coupling with the cap.

Ensuite, les réglages terminés, il faut enfiler le fil d'antenne dans le capuchon, ce qui est incommode, d'autant que ce fil est alors solidaire de la carte. On pourrait songer, à cet effet, à ménager un espace de section largement suffisante dans le capuchon, mais alors le couplage ci-dessus serait mal déterminé et pourrait varier.Then, the settings finished, you have to thread the antenna wire in the cap, which is inconvenient, especially since this wire is then secured to the map. We could think, for this purpose, to provide a section space more than enough in the cap, but then the above coupling would be unclear and could vary.

Dans un domaine particulier voisin, celui des terminaux à antenne coulissante, tel qu'illustré par WO 97/02622, les réglages d'antenne ne peuvent être effectués qu'après montage dans le boítier puisque celui-ci porte l'antenne à travers une bague de connexion au circuit imprimé. L'antenne doit alors obligatoirement être dans sa forme mécanique définitive, c'est-à-dire avec une enveloppe rigide surmoulée sur le fil d'antenne pour rigidifier l'ensemble et permettre de repousser l'antenne dans le boítier et de l'en extraire en tirant sur son extrémité, coulissement dans la bague, deux butées opposées étant limiter sa course. Comme la carte montée n'est plus accessible, l'enveloppe d'antenne comporte un élément de réglage porté par l'enveloppe.In a particular neighboring field, that of antenna terminals sliding, as illustrated by WO 97/02622, the antenna settings do not can be carried out only after mounting in the case since it carries the antenna through a printed circuit connection ring. The antenna must then be in its mechanical form final, that is to say with a rigid envelope overmolded on the wire antenna to stiffen the assembly and allow the antenna to be pushed back in the housing and extract it by pulling on its end, sliding in the ring, two opposite stops being limiting its stroke. Like the mounted card is no longer accessible, the antenna envelope contains a adjustment element carried by the casing.

Revenant dans le domaine des terminaux à antenne fixe, la contrainte mécanique, de rigidité de l'antenne, évoquée ci-dessus n'existe pas et, même, on peut estimer que le risque de blessure évoqué au début est réduit si l'antenne est très souple, c'est-à-dire avec un fil de faible section monté libre dans une enveloppe souple.Returning in the field of fixed antenna terminals, the constraint mechanical, rigidity of the antenna, mentioned above does not exist and, even, we can estimate that the risk of injury mentioned at the beginning is reduced if the antenna is very flexible, i.e. with a small section wire free mounted in a flexible envelope.

La présente invention vise à permettre un réglage facile et peu coûteux d'une antenne fixe de terminal portable.The present invention aims to allow easy and inexpensive adjustment of a fixed portable terminal antenna.

A cet effet, l'invention concerne un terminal radio portatif, comportant une antenne fixe comprenant un fil, dont au moins l'extrémité libre est entourée d'une enveloppe de protection, raccordé à une carte de circuit imprimé et faisant saillie hors d'un boítier contenant la carte, caractérisé par le fait que l'antenne est monobloc et l'enveloppe est surmoulée sur le fil.To this end, the invention relates to a portable radio terminal, comprising a fixed antenna comprising a wire, at least the free end of which is surrounded by a protective envelope, connected to a circuit board printed and protruding out of a box containing the card, characterized by the fact that the antenna is in one piece and the envelope is overmolded on the wire.

Ainsi, l'antenne constitue un composant de la carte, relié électriquement aux autres composants et se présentant d'emblée sous une forme définitive, permettant son réglage, aucune opération supplémentaire d'assemblage de ses éléments n'étant nécessaire. Le surmoulage peut être effectué avec tout matériau souple et donc conserver à l'antenne une certaine souplesse pour prévenir les risques de blessure.Thus, the antenna constitutes a component of the card, electrically connected to the other components and immediately appearing in a form final, allowing its adjustment, no additional operation assembly of its elements is not necessary. Overmolding can be made with any flexible material and therefore keep on the antenna a flexibility to prevent the risk of injury.

L'invention sera mieux comprise à l'aide de la description suivante d'une forme de réalisation préférée du terminal de l'invention, en référence au dessin annexé, sur lequel :

  • la figure 1 est une vue de face très schématique d'un terminal portable de radiotéléphonie cellulaire selon l'invention, et
  • la figure 2 en est une vue latérale en coupe selon la ligne II-II de la figure 1.
The invention will be better understood with the aid of the following description of a preferred embodiment of the terminal of the invention, with reference to the appended drawing, in which:
  • FIG. 1 is a very diagrammatic front view of a portable terminal for cellular radiotelephony according to the invention, and
  • FIG. 2 is a side view in section along the line II-II of FIG. 1.

Le terminal de radiotéléphonie représenté comporte un boítier 1 contenant une carte de circuit imprimé 2 portant divers circuits électroniques et en particulier des circuits émetteurs-récepteurs 3 reliés à une piste-antenne 4 qui se prolonge, hors du boítier 1, par une antenne externe fixe 6.The radiotelephony terminal shown has a box 1 containing a printed circuit board 2 carrying various electronic circuits and particular of the transceiver circuits 3 connected to an antenna track 4 which extends, out of the housing 1, by a fixed external antenna 6.

L'antenne externe 6 comporte un fil antenne ou âme centrale 7 entouré d'un surmoulage en matériau plastique 8, s'étendant ici sur toute la longueur de l'antenne 6. Par le choix du matériau plastique 8 et son épaisseur limitée, l'antenne 6 présente une souplesse garantie limitant les risques de blessure des personnes. En particulier, la section de l'enveloppe 10 pourrait être réduite dans le tronçon reliant sa zone d'extrémité libre au pied de l'antenne 6.The external antenna 6 comprises an antenna wire or central core 7 surrounded a plastic molding 8, here extending over the entire length of the antenna 6. By the choice of plastic material 8 and its limited thickness, the antenna 6 has guaranteed flexibility limiting the risk of personal injury. In particular, the section of the envelope 10 could be reduced in the section connecting its zone free end at the foot of the antenna 6.

L'extrémité du fil 7 en pied de l'antenne 6 est dénudée et connectée électriquement à l'extrémité de la piste 4, précisément elle est soudée dans cet exemple à une plage 5 terminant cette piste 4. L'antenne 6 est ainsi monobloc et raccordée directement, de façon inamovible, à la plage 5. Elle constitue un élément fixe de la carte 2, ayant des caractéristiques électriques fixes ou figées et donc stables pour effectuer des réglages définitifs. En particulier, l'absence de connecteur en pied d'antenne évite les problèmes de pollution et d'usure à ce niveau, avec les problèmes de réflexions parasites qu'ils entraínent.The end of the wire 7 at the bottom of the antenna 6 is stripped and connected electrically at the end of track 4, precisely it is welded in this example to a track 5 ending this track 4. The antenna 6 is thus monobloc and connected directly, irremovably, to the beach 5. It constitutes a fixed element of the card 2, having characteristics fixed or fixed and therefore stable electrics for making adjustments final. In particular, the absence of a connector at the foot of the antenna prevents the problems of pollution and wear at this level, with the problems of parasitic reflections which they involve.

L'antenne 6 est fixée ici au boítier 1. A cet effet, elle comporte, dans la zone de pied, une protubérance radiale 9, ou anneau partiel, coopérant avec un évidement dans l'épaisseur de la paroi du boítier 1, afin d'empêcher toute translation axiale de l'antenne 6. L'évidement ci-dessus a une extension angulaire, autour de l'axe de l'antenne 6, limitée à la taille angulaire de la protubérance 9, si bien que l'antenne 6 est ici entièrement bloquée, sans possibilité de rotation.The antenna 6 is fixed here to the housing 1. For this purpose, it comprises, in the foot area, a radial protuberance 9, or partial ring, cooperating with a recess in the thickness of the wall of the housing 1, so to prevent any axial translation of the antenna 6. The above recess has an angular extension, around the axis of the antenna 6, limited to the angular size of the protuberance 9, so that the antenna 6 is here fully blocked, without possibility of rotation.

En variante, il aurait pu être prévu de fixer le pied de l'antenne 6 à la carte 12, par exemple par collage sur une plage de celle-ci. Alternatively, provision could have been made to fix the base of the antenna 6 to the card 12, for example by gluing on a range thereof.

Comme le montre la figure 2, où a été représenté un haut-parleur 12 pour indiquer la face avant du terminal, l'antenne 6 présente, dans cet exemple, une orientation générale inclinée sur un plan longitudinal du boítier 1, comme le plan de la carte 2. Plus précisément, l'antenne 6 comporte un tronçon de pied 10 sensiblement parallèle au plan de la carte 2 et un tronçon d'extrémité libre 11 s'écartant de ce plan, vers l'arrière du boítier 1. Elle est ainsi, au moins partiellement, écartée de la tête de l'utilisateur, si bien que la transmission radio est moins affectée par celle-ci et est donc plus omnidirectionnelle en utilisation.As shown in Figure 2, where a speaker 12 has been shown for indicate the front face of the terminal, the antenna 6 present, in this example, a general orientation inclined on a longitudinal plane of the box 1, like the map of the card 2. More specifically, the antenna 6 comprises a foot section 10 substantially parallel to the plane of the card 2 and a free end section 11 deviating from this plane, towards the rear of the housing 1. It is thus, at least partially, separated from the head of the user, so that radio transmission is less affected by it and is therefore more omnidirectional in use.

Claims (7)

Terminal radio portatif, comportant une antenne fixe (6) comprenant un fil (7), dont au moins l'extrémité libre est entourée d'une enveloppe de protection (8), raccordé à une carte de circuit imprimé (2) et faisant saillie hors d'un boítier (1) contenant la carte (2), caractérisé par le fait que l'antenne (6) est monobloc et l'enveloppe (8) est surmoulée sur le fil (7).Portable radio terminal, comprising a fixed antenna (6) comprising a wire (7), at least the free end of which is surrounded by an envelope of protection (8), connected to a printed circuit board (2) and projecting out of a housing (1) containing the card (2), characterized in that the antenna (6) is in one piece and the envelope (8) is molded onto the wire (7). Terminal selon la revendication 1, dans lequel le fil (7) d'antenne se termine par une partie dénudée de pied de connexion à la carte (2).Terminal according to claim 1, in which the antenna wire (7) is ends with a bare part of the card connection foot (2). Terminal selon l'une des revendications 1 et 2, dans lequel l'enveloppe (8) comporte, dans une zone d'extrémité, des moyens (9) de fixation au boítier (1).Terminal according to one of claims 1 and 2, in which the envelope (8) comprises, in an end zone, means (9) for fixing to the housing (1). Terminal selon l'une des revendications 1 et 2, dans lequel l'enveloppe (8) comporte, dans une zone d'extrémité, des moyens de fixation à la carte (2).Terminal according to one of claims 1 and 2, in which the envelope (8) comprises, in an end zone, means for fixing to the card (2). Terminal selon l'une des revendications 1 à 4, dans lequel l'antenne (6) présente une orientation générale inclinée sur un plan longitudinal contenant la carte (2) du boítier (1).Terminal according to one of claims 1 to 4, in which the antenna (6) has a general orientation inclined on a longitudinal plane containing the card (2) of the housing (1). Terminal selon la revendication 5, dans lequel l'antenne (6) comporte un tronçon de pied sensiblement parallèle au plan de la carte (2) et un tronçon d'extrémité libre s'écartant dudit plan.Terminal according to claim 5, in which the antenna (6) comprises a foot section substantially parallel to the plane of the card (2) and a free end section deviating from said plane. Terminal selon l'une des revendications 1 à 6, dans lequel l'antenne (6) présente des caractéristiques électriques fixes.Terminal according to one of claims 1 to 6, in which the antenna (6) has fixed electrical characteristics.
EP98403104A 1997-12-09 1998-12-09 Portable radiotelephone with fixed rod antenna 0 Withdrawn EP0923152A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9715543 1997-12-09
FR9715543A FR2772219B1 (en) 1997-12-09 1997-12-09 WIRE ANTENNA FOR PORTABLE RADIOTELEPHONY TERMINAL

Publications (1)

Publication Number Publication Date
EP0923152A1 true EP0923152A1 (en) 1999-06-16

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ID=9514348

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Application Number Title Priority Date Filing Date
EP98403104A Withdrawn EP0923152A1 (en) 1997-12-09 1998-12-09 Portable radiotelephone with fixed rod antenna 0

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EP (1) EP0923152A1 (en)
FR (1) FR2772219B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001017062A1 (en) * 1999-08-31 2001-03-08 Siemens Aktiengesellschaft Antenna for a mobile radio telephone

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2255449A (en) * 1991-03-25 1992-11-04 Nokia Mobile Phones Ltd Moulded antenna rod.
EP0590534A1 (en) * 1992-09-28 1994-04-06 Ntt Mobile Communications Network Inc. Portable radio unit
EP0688060A1 (en) * 1994-06-13 1995-12-20 Galtronics Ltd. Electrical antenna assembly and electrical device including same
WO1996038879A1 (en) * 1995-06-02 1996-12-05 Ericsson Inc. Printed monopole antenna
US5583519A (en) * 1990-02-23 1996-12-10 Kabushiki Kaisha Toshiba Extendable antenna for a radio transceiver
EP0755091A1 (en) * 1995-02-07 1997-01-22 Sony Corporation Antenna for two frequency bands
WO1997002622A1 (en) * 1995-06-30 1997-01-23 Smk Corporation Antenna assembly
DE19620630A1 (en) * 1996-05-22 1997-11-27 Aeg Mobile Communication Radiotelephone especially for GSM network

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5583519A (en) * 1990-02-23 1996-12-10 Kabushiki Kaisha Toshiba Extendable antenna for a radio transceiver
GB2255449A (en) * 1991-03-25 1992-11-04 Nokia Mobile Phones Ltd Moulded antenna rod.
EP0590534A1 (en) * 1992-09-28 1994-04-06 Ntt Mobile Communications Network Inc. Portable radio unit
EP0688060A1 (en) * 1994-06-13 1995-12-20 Galtronics Ltd. Electrical antenna assembly and electrical device including same
EP0755091A1 (en) * 1995-02-07 1997-01-22 Sony Corporation Antenna for two frequency bands
WO1996038879A1 (en) * 1995-06-02 1996-12-05 Ericsson Inc. Printed monopole antenna
WO1997002622A1 (en) * 1995-06-30 1997-01-23 Smk Corporation Antenna assembly
DE19620630A1 (en) * 1996-05-22 1997-11-27 Aeg Mobile Communication Radiotelephone especially for GSM network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001017062A1 (en) * 1999-08-31 2001-03-08 Siemens Aktiengesellschaft Antenna for a mobile radio telephone

Also Published As

Publication number Publication date
FR2772219A1 (en) 1999-06-11
FR2772219B1 (en) 2000-02-04

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