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WO2001095428A1 - Antenne pour automobile et jeu de composants pour une telle antenne - Google Patents

Antenne pour automobile et jeu de composants pour une telle antenne Download PDF

Info

Publication number
WO2001095428A1
WO2001095428A1 PCT/EP2001/004421 EP0104421W WO0195428A1 WO 2001095428 A1 WO2001095428 A1 WO 2001095428A1 EP 0104421 W EP0104421 W EP 0104421W WO 0195428 A1 WO0195428 A1 WO 0195428A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupler
outer conductor
antenna
support body
conductor
Prior art date
Application number
PCT/EP2001/004421
Other languages
German (de)
English (en)
Inventor
Marco Schnürer
Original Assignee
Wilhelm Sihn Jr. Kg
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
Priority claimed from DE10036591A external-priority patent/DE10036591C2/de
Application filed by Wilhelm Sihn Jr. Kg filed Critical Wilhelm Sihn Jr. Kg
Priority to US10/297,097 priority Critical patent/US6784846B2/en
Priority to EP01929580A priority patent/EP1290754B1/fr
Priority to JP2002502861A priority patent/JP4836393B2/ja
Priority to DE50101090T priority patent/DE50101090D1/de
Publication of WO2001095428A1 publication Critical patent/WO2001095428A1/fr

Links

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
    • H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
    • 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
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles

Definitions

  • the invention is based on an antenna with the features specified in the preamble of claim 1.
  • an antenna is known from EP 0389705 A2 and has a coaxial coupler which has an outer conductor, an inner conductor and a supporting body made of a plastic and which fixes the inner conductor in the outer conductor. Furthermore, such an antenna has a radiating element which is connected in an electrically conductive manner to the inner conductor of the coupler.
  • Such an antenna is e.g. mounted on the bodywork of an automobile with the aid of a foot part.
  • the antenna can be connected to a receiver provided in the vehicle using a connector that matches the coupler and an antenna cable. For this purpose, a hole is provided in the body panel, on the edge of which the antenna is fixed with your foot section and a ground contact can be made with the body panel.
  • Antennas of the type mentioned are tuned to the frequency range in which they are to work. For different frequency ranges, e.g. for mobile phones in the C network (450 to 465 MHz), D network (890 to 960 MHz), E network (1780 to 1920 MHz) or frequencies for navigation systems (Global Positioning System, GPS, 1570 to 1580 MHz) the antennas are different educated. This requires the production and stocking of different components.
  • an antenna which has a sleeve encapsulating a radiator element, in which an arrangement of coaxial outer conductor, inner conductor and coupler is anchored to the radiator element.
  • the present invention has for its object to show a way in which antennas of the type mentioned in the introduction can be standardized and easily assembled despite individual adaptation to different frequency ranges.
  • the solution to this task is particularly important for cost reasons.
  • Antennas according to the invention are primarily intended for high frequencies, in particular for the C network, for the D network, for the E network, for GPS, and for future UMTS applications (Universal Mobile Telecommunication Service) for which the Frequency range from 1990 to 2200 MHz is provided.
  • UMTS applications Universal Mobile Telecommunication Service
  • the antenna is adapted by means of a circuit which is located on a between the radiating element and the inner conductor of the
  • Coupler circuit board arranged and is electrically conductively connected both to the inner conductor of the coupler and to the radiator element, the radiator element can be designed to match the different frequency ranges in question.
  • the adjustment is made by the circuit on the circuit board, its external dimensions for the different frequency ranges can be selected in accordance.
  • the mechanical structure of the antenna can therefore be the same for the different frequency ranges.
  • the circuit carrier plate extends in the longitudinal direction of the radiator element, the circuit with a conductor track in the longitudinal direction of the radiator element can form part of the radiator, so that the effective length of the inner conductor of the coupler via the circuit carrier plate to the radiator element and preferably extends beyond this into a final radiator part.
  • this radiator part is preferably designed to be flexible.
  • the radiator element is expediently designed as a socket into which the flexible radiator part can be inserted.
  • circuit board is embedded in the support part gives a very compact structure, saves separate fasteners for the circuit board and achieves optimal protection for it.
  • the antenna is compact and mechanically very stable.
  • the circuit carrier plate can be embedded in the plastic of the support part in such a way that one or two contact surfaces intended to make contact with the outer conductor of the coupler are not embedded, but are exposed. Contact is established with the outer conductor of the coupler particularly easy because it is designed and intended to firmly enclose the supporting part of the coupler anyway. The contact between the contact surface (s) not embedded in the plastic of the support part is supplied without any special effort. ⁇ The steps required to assemble the antenna are the same for antennas tuned to different frequency ranges.
  • the circuit carrier plate can be embedded in the support part in a cost-saving manner in that the circuit carrier plate is extrusion-coated with the plastic of the support part.
  • an injection mold which e.g. is designed so that the circuit board with the inner conductor of the coupler already attached to it and with the radiator element already attached to it is placed in an injection mold or in a multiple injection mold.
  • the radiator element is encapsulated in a plastic sleeve and protected from the weather.
  • the sleeve also extends over the
  • Coupler and is anchored on the outside.
  • the inner conductor of the coupler and the radiator element can be connected in a conventional manner to the circuit on the circuit board.
  • a conductor track leads to each of these holes; the holes are preferably plated through, in particular copper-plated by electrolytic metal deposition, the metal layer provided in the hole being connected to the conductor track which leads to the hole on one side or on the other side of the circuit board.
  • the contact between the outer conductor of the coupler and the contact surface (s) provided for it on the circuit board is particularly simple and reliable if the contact surface is on the edge surface the circuit board.
  • the edge surface is understood to mean the narrow surface, which is determined by the thickness of the circuit carrier plate and runs transversely to the two main surfaces of the circuit carrier plate and which surrounds the circuit carrier plate at its edge. It faces the inner surface of the outer conductor directly and can therefore be contacted particularly easily.
  • the support body has a section provided with an external thread and if the outer conductor of the coupler has an internal thread with which it is screwed onto the external thread of the support body.
  • the contact between the outer conductor of the coupler and the contact surface (s) of the circuit carrier plate interacting therewith is particularly good and secure if the contact surface (s), as preferably provided, is located on one or two shoulders formed on the edge of the circuit carrier plate ( n) is or are located at which the outer conductor strikes with a projection provided on its inside, which is best designed in a ring-shaped manner, so that it is in any rotational angle position of the outer conductor on the support body with the contact surface (s) formed on the edge of the circuit board (n) can make contact.
  • Such a shoulder can be produced particularly cheaply by starting from a somewhat wider circuit carrier plate, inserting a hole in each of these at the locations provided for the formation of the shoulders, and contacting these through electrolytic metal deposition in the course of the formation of the conductor structures on the circuit carrier plate , Then the circuit board is trimmed at its edge so that the Cut is made through the hole (s), which is or are intended to make contact with the outer conductor of the coupler.
  • the support body preferably projects beyond the outer conductor in the direction facing the radiator element and, conversely, the outer conductor preferably projects beyond the support body in the opposite direction. In this way it can be achieved that the outer conductor does not shield the circuit board, and in some cases also does not shield the inner conductor.
  • the antenna tapers step by step from its connection end to the tip of the radiating element and can in this way be encapsulated in a plastic sleeve, which preferably tapers conically on the outside, as a result of which the antenna is given a compact and elegant design.
  • a coaxial plug can be inserted in a protected manner into the outer conductor projecting downward beyond the support body.
  • the support body in this development of the invention does not protrude downward from the outer conductor, recesses are provided in the support body on its underside, that is, the side facing away from the radiator element, for the engagement of a rotary key, with which the support body can be seen from the underside the outer conductor is rotated and the necessary pressure can be generated when the contact surfaces of the circuit carrier plate strike the associated stop of the outer conductor.
  • Circuit carrier plates which are kept in stock with different circuits for adapting the antennas to different frequency ranges, should correspond in their dimensions so that the mechanical conditions when mounting antennas for different frequency ranges do not differ.
  • FIG. 1 shows an enlarged view of a circuit carrier plate, to which a radiator element and an inner conductor of a coupler are attached, in an oblique view
  • FIG. 2 shows the arrangement from FIG. 1, overmolded with a supporting body made of plastic, in a side view,
  • FIG. 3 shows the component shown in FIG. 2 in an oblique view, seen obliquely from below
  • FIG. 4 shows the component shown in FIGS. 2 and 3 when it is inserted into an outer conductor designed as a screw sleeve in an oblique view
  • Figure 5 shows the component shown in Figures 2 and 3 inserted into the outer conductor according to Figure 4, and
  • FIG. 6 shows the arrangement from FIG. 5, inserted into a sleeve
  • FIG. 1 shows an elongated, approximately rectangular circuit carrier plate 1, which carries a symbolically represented circuit 2 made of conductor tracks and of circuit parts produced using SMD technology.
  • a largely running in the longitudinal direction of the circuit board 1 interconnects a hole 3 near the upper end of the circuit board 1 with a Bore 4 in the vicinity of the lower end of the circuit board 1.
  • a radiator element 5, which extends in the longitudinal direction of the circuit board 1, is riveted to the circuit board 1 on the upper bore 3.
  • the inner conductor 6 of a coaxial coupler is riveted to the circuit carrier plate 1 at the lower bore 4.
  • the radiator element 5 and the inner conductor 6 are aligned coaxially.
  • the radiation element 5 is designed as a socket, the inner conductor 6 as a slotted socket.
  • the circuit carrier plate On the two longitudinal edges of the circuit carrier plate, which run parallel to the longitudinal axis 7 of the radiating element 5 and the inner conductor 6, there are two shoulders 8 and 9; they are arranged mirror-symmetrically with respect to the longitudinal axis 7.
  • the two shoulders 8 and 9 are formed on the edge surface 10 of the circuit board 1; the shoulders 8 and 9 are the remains of two originally existing, through-plated-through holes, from which more than half of their circumference was subsequently removed by trimming the edge of the circuit board 1.
  • the assembly shown in FIG. 1 is overmolded with a plastic in an injection mold in order to form the support body 11 shown in FIG. 2 and in FIG. 3.
  • the circuit board 1 is almost completely embedded in the plastic, with the exception of its two longitudinal edges, on which the shoulders 8 and 9 are located with their contact surfaces 8a and 9a.
  • the inner conductor 6 and the radiator element 5 are also embedded to a certain extent in the plastic.
  • the support body 11 is essentially an elongated, essentially prismatic body 12 with an adjoining circular threaded flange 13, on the outer surface of which a screw thread was formed during injection molding.
  • the component shown in FIGS. 2 and 3 is rotated with its threaded flange 13 into an outer conductor 15 designed as a metallic screw sleeve with an internal thread 16.
  • An inwardly projecting annular stop 7 is formed at the upper end of the outer conductor 15.
  • the component shown in Figures 2 and 3 is screwed from below into the outer conductor 15 until it strikes with the shoulders 8 and 9 on the stop 17.
  • the contour of the stop surface of the stop 17 is conical with respect to the longitudinal axis 7 and is designed in such a way that the stop 17 not only makes firm contact with the contact surfaces 8a and 9a, but also at a point on the threaded flange which is somewhat more radially outward establishes a firm contact with it; this has the advantage that no moisture can rise from below between the support body 11 and the sleeve of the outer conductor 15 upwards into the region of the radiator.
  • FIG. 5 shows the component shown in FIGS. 2 and 3 after it has been screwed firmly into the sleeve of the outer conductor 15.
  • Figure 6 shows the arrangement shown in Figure 5 surrounded by a sleeve 18 made of plastic, which has the shape of a slim cone on the outside.
  • This sleeve 18 is made of plastic and is preferably injection molded around the outer conductor 15 by injection molding before the assembly step shown in FIG. 4, so that it is firmly and watertightly anchored in the sleeve 18.
  • the contour of the inside of the sleeve 18 is selected so that it surrounds the portion of the support body 11 projecting from the outer conductor 16 relatively closely and surrounds the radiator element 5 with greater latitude.
  • FIG. 6 also shows that, in this exemplary embodiment, a further radiator part 5a is connected to the radiator element 5 in order to achieve the length of the steel suitable for the intended use of the antenna.
  • the radiator part 5a is inserted into the radiator element 5 designed as a socket and is fastened therein, for example by crimping.
  • the additional radiator part 5a is preferably a flexible metallic strand, which is covered with a plastic is encased.
  • the desired radiator length can also be achieved in one piece with a modified radiator element.
  • the sleeve 18 projects beyond the lower edge of the outer conductor 15 and is provided at its lower edge with an inwardly projecting bead 19, with the aid of which it can be snapped onto a foot part of the antenna, not shown.
  • the foot part can in turn serve to fasten the antenna to the body panel of an automobile and to pass the inner conductor through a hole in the body panel.

Landscapes

  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)

Abstract

L'invention concerne une antenne pour automobile, comprenant un coupleur axial qui présente un conducteur extérieur (15), un conducteur intérieur (6) et un corps d'appui (11) en matière plastique, fixant le conducteur intérieur (6) dans le conducteur extérieur (15). Ladite antenne comporte également un élément radiant (5) relié de manière électroconductrice au conducteur intérieur (6) du coupleur. Il est prévu un circuit (2) servant à adapter l'antenne, qui se trouve sur une plaque porte-circuit (1) disposée entre l'élément radiant (5) et le conducteur intérieur (6) du coupleur, qui s'étend en direction de l'élément radiant (5). Ledit circuit est connecté de manière électroconductrice, aussi bien au conducteur intérieur (6) du coupleur qu'à l'élément radiant (5). Selon l'invention, il est prévu que l'antenne présente une gaine (18) en matière plastique encapsulant l'élément radiant (5), dans laquelle le conducteur extérieur (15) du coupleur est ancré. La plaque porte-circuit (1) est incorporée dans le corps d'appui (11) et présente sur un de ses bords, une surface de contact (8a,9a) non recouverte de matière plastique du corps d'appui (11) et conçue de manière à faire contact avec le conducteur extérieur (15) du coupleur.
PCT/EP2001/004421 2000-05-28 2001-04-19 Antenne pour automobile et jeu de composants pour une telle antenne WO2001095428A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10/297,097 US6784846B2 (en) 2000-05-28 2001-04-19 Antenna for automobiles and set of components for the same
EP01929580A EP1290754B1 (fr) 2000-05-28 2001-04-19 Antenne pour automobile et jeu de composants pour une telle antenne
JP2002502861A JP4836393B2 (ja) 2000-05-28 2001-04-19 自動車用アンテナ及びそのコンポーネントセット
DE50101090T DE50101090D1 (de) 2000-05-28 2001-04-19 Antenne für automobile und bauteilesatz für eine solche

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10027687 2000-05-28
DE10027687.3 2000-05-28
DE10036591A DE10036591C2 (de) 2000-05-28 2000-07-27 Antenne für Automobile und Bauteilesatz für eine solche
DE10036591.4 2000-07-27

Publications (1)

Publication Number Publication Date
WO2001095428A1 true WO2001095428A1 (fr) 2001-12-13

Family

ID=26005958

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/004421 WO2001095428A1 (fr) 2000-05-28 2001-04-19 Antenne pour automobile et jeu de composants pour une telle antenne

Country Status (2)

Country Link
EP (1) EP1290754B1 (fr)
WO (1) WO2001095428A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882592A (en) * 1989-02-03 1989-11-21 Radio Frequency Systems, Inc. Motor vehicle antenna mount
EP0389705A2 (fr) * 1989-03-28 1990-10-03 Nippon Tsushin Densen Company Ltd. Antenne mobile
US5926149A (en) * 1993-10-27 1999-07-20 Rr Elektronische Gerate Gmbh & Co. Kg Coaxial antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882592A (en) * 1989-02-03 1989-11-21 Radio Frequency Systems, Inc. Motor vehicle antenna mount
EP0389705A2 (fr) * 1989-03-28 1990-10-03 Nippon Tsushin Densen Company Ltd. Antenne mobile
US5926149A (en) * 1993-10-27 1999-07-20 Rr Elektronische Gerate Gmbh & Co. Kg Coaxial antenna

Also Published As

Publication number Publication date
EP1290754B1 (fr) 2003-12-03
EP1290754A1 (fr) 2003-03-12

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