EP0332898B1 - Fenêtre pour véhicule - Google Patents

Fenêtre pour véhicule Download PDF

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Publication number
EP0332898B1
EP0332898B1 EP89103269A EP89103269A EP0332898B1 EP 0332898 B1 EP0332898 B1 EP 0332898B1 EP 89103269 A EP89103269 A EP 89103269A EP 89103269 A EP89103269 A EP 89103269A EP 0332898 B1 EP0332898 B1 EP 0332898B1
Authority
EP
European Patent Office
Prior art keywords
slot
busbars
windowpane
metal coating
vapour
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.)
Expired - Lifetime
Application number
EP89103269A
Other languages
German (de)
English (en)
Other versions
EP0332898A1 (fr
Inventor
Hubert Becker
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke GmbH
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 Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Publication of EP0332898A1 publication Critical patent/EP0332898A1/fr
Application granted granted Critical
Publication of EP0332898B1 publication Critical patent/EP0332898B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • 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
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • H01Q1/1278—Supports; Mounting means for mounting on windscreens in association with heating wires or layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/16—Folded slot antennas

Definitions

  • the invention belongs to the field of heatable viewing windows for vehicles which also carry antennas for mobile radio reception.
  • the invention thus also belongs to the field of disc antennas.
  • Heated viewing panels with antennas are e.g. B. known from DEAS 23 60 672.
  • a conductor system is arranged on these known viewing windows for motor vehicles, which also performs heating functions and antenna functions.
  • electrical resistance elements are arranged between current-carrying busbars, one of which is located near the upper, the other near the lower edge of the pane, while the heating wires run vertically between the busbars.
  • One of the two busbars is divided into two parts and the two parts are capacitively coupled to a receiver at their adjacent ends via feed lines.
  • the two parts of the busbar and any extensions attached to them form an FM antenna.
  • the FM antenna is tuned by theoretical calculation of the length of the extensions and subsequent corrections based on measurements.
  • antennas which are sensitive in the FM range, as well as those for the AM radio range can be integrated into vaporized viewing panes if the covering is designed in accordance with the features of claim 1 and is connected to the receiver.
  • a lens 1 is shown for a vehicle, the outline of which is intended as a rear or front window.
  • This lens is vapor-coated in a known manner with a highly conductive metal coating, so that the metal coating can be regarded as low-resistance.
  • a slot 2 of sufficient length and narrow width is cut out at a distance a from the one edge of the steamed surface, essentially parallel to it.
  • the heating current is supplied via the edges 5, 6 of the vaporized surface, which lie opposite the slot ends 3, 4.
  • the edges of the metal covering can even form busbars 7, 8 for the power supply. These busbars can also be designed separately.
  • the slot ends 3, 4 also maintain a distance a from the busbar.
  • the slot ends 3, 4 can also be angled with respect to the central region 9 and guided parallel to the busbars 7, 8 in order to achieve a greater slot length.
  • the length of the slot should correspond approximately to the electrical value ⁇ / 2 in the FM range. The length therefore depends on the dielectric constant ⁇ r of the glass of the lens.
  • the width of the slot can be kept very small compared to half the wavelength ⁇ / 2, while the distance a is chosen to be small compared to half the wavelength ⁇ / 2.
  • the value of the constant ⁇ r should expediently be chosen such that the slot ends do not have to be angled in order to tune the slot antenna to the value on the order of ⁇ / 2 in the FM range. Because an angling of the slot ends may affect the flow of the heating current, so that an unheated zone can form between the angled ends.
  • the center of the upper edge at 10 of the slot 2 is connected to the inner conductor 12 of a coaxial cable, while the center of the lower edge at 11 is connected to the chassis via a capacitance 15, which is a short-circuit for FM Surrounds viewing panels.
  • the outer conductor 13 of the coaxial cable is also connected to this chassis.
  • FIG. 2 shows a slot antenna whose electrical length ⁇ / 4 is in the FM range.
  • the base point 21 ends in a circumferential free space 22.
  • the slot 20 extends essentially in the flow direction of the heating current, which extends or closes from the left and right viewing window edges 23, 24. is dissipated.
  • the two slot edges are connected at the base point by means of a transformer 25 which connects to the inner conductor 26 of a coaxial cable, the outer conductor 27 of which is again connected to the chassis.
  • the transmitter 25 Since the vaporized area is surrounded here by a circumferential free space 22, the transmitter 25 also transmits the signals of the AM radio range via the coaxial cable.
  • a circumferential free space 32 is cut out between the circumferential edge 31 of the viewing window 30 and the vapor-coated surface. If the inner conductor 33 of a coaxial cable is connected to the vaporized surface, a sufficient signal can be obtained from it for both an FM and an AM receiver.
  • the free space 32 acts as a slot antenna, since the metallic chassis edge for the vehicle window, which is indicated at 34, surrounds the lens 30 on the outside.
  • the vaporized area serves as a conductor.
  • FIG. 4 shows the connection of the upper edge 41 of the slot 40 to a coaxial cable via an interposed strip line 42.
  • a T-shaped structure is left in the vapor-coated surface.
  • the strip line 42 is passed between the two edges 43, 44 of the vertical T-leg and, as FIG. 4a shows more clearly, is connected to the inner conductor 45 of the coaxial cable 46 at the lower end of the viewing window.
  • the vertical slot is covered with a metallized insulating layer 47 which, together with the edges 43, 44, forms a capacitive coupling for the ring alternating current around the slot antenna.
  • the outward-facing metallization on the insulating layer 47 is connected at 48 to the chassis, to which the outer conductor 49 of the coaxial cable 46 is also connected.
  • edges 43, 44 can also serve as a busbar for supplying the heating current.
  • chokes 52, 53 which are effective in the AM area must then be included, which are expediently wound on a common ring core 54.
  • FIG. 5 shows an improved embodiment of the slot antenna according to FIG. 1.
  • a distance h from the slot 55 known from FIG. 1 there is a second slot 56, which corresponds approximately in length and width to the first slot 55.
  • An antenna gain in the horizontal can thereby be achieved.
  • the length of the slot 56 and the distance h from the slot 55 go into the size of the antenna gain and the directivity of the antenna and must be chosen in accordance with the circumstances.

Landscapes

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

Claims (6)

  1. Fenêtre pour véhicule avec une couche de métal métallisée sous vide entre deux barres collectrices servant d'amenée de courant, caractérisée en ce que :
    - les barres collectrices (7, 8) sont disposées sur les bords (5, 6) opposés à la zone métallisée de la fenêtre (1) et une rainure (2) se développant perpendiculairement aux barres collectrices se trouve ménagée dans la couche métallique de basse impédance,
    - le centre d'un des bords (10) de la rainure est relié au conducteur intérieur (12) et le centre de l'autre bord (11) opposé à la rainure se trouve relié au conducteur extérieur (13) d'un câble coaxial et la longueur de la fente est dimensionnée en fonction de la valeur des constantes diélectriques du verre εr,
    - l'antenne formée par la rainure atteint une valeur électrique de l'ordre de grandeur de λ/2 dans le domaine des ondes métriques, tandis que la largeur de la rainure est très petite par rapport à la valeur de λ/2, et
    - les extrémités de la rainure (3, 4) sont situées à une distance a des barres collectrices, qui est petite vis-à-vis de la demi-longueur d'ondes λ/2.
  2. Fenêtre selon la revendication 1, caractérisée en ce que le milieu de l'autre bord (11) de la rainure est en liaison capacitive avec le châssis et le conducteur extérieur (13) est au potentiel du châssis.
  3. Fenêtre pour véhicule avec une couche de métal métallisée sous vide entre deux barres collectrices servant d'amenée du courant, caractérisée en ce que :
    - les barres conductrices (7, 8) sont disposées sur les bords (5, 6) opposés à la zone métallisée de la fenêtre (1) et une structure sous forme de rainures (40, 42, 44) réalisée essentiellement en forme de T est ménagée dans la couche métallique de basse impédance,
    - le centre du bord continu de la branche horizontale du T (40) est relié à un guide d'ondes à rubans (42) qui passe entre les bords (43, 44) de la branche verticale du T,
    - la branche verticale du T est recouverte d'une couche isolante métallisée (47) et
    - le conducteur intérieur (45) d'un câble coaxial est relié au guide d'ondes à rubans (42) et la couche métallique sur la couche isolante est au potentiel du châssis.
  4. Fenêtre pour un véhicule selon une des revendications 1, 2 ou 3, caractérisée en ce qu'à la distance h d'une première rainure (55) est ménagée une seconde rainure (56) parallèle à la première, dont la longueur et la largeur correspondent essentiellement à la longueur et la largeur de la première rainure (55).
  5. Fenêtre pour véhicule avec une couche de métal métallisée sous vide entre deux barres collectrices servant d'amenée du courant, caractérisée en ce que les barres collectrices (7, 8) sont disposées sur les bords opposés (5, 6) de la zone métallisée de la fenêtre (1) et la couche métallique de basse impédance est métallisée en réservant un espace libre (32) tout autour des bords de la fenêtre, agissant comme antenne à rainure et la couche de métal est reliée à un conducteur intérieur (33) d'un câble coaxial, tandis que le conducteur extérieur (35) du câble coaxial se trouve au potentiel du châssis.
  6. Fenêtre pour un véhicule avec une couche de métal métallisée sous vide entre deux barres collectrices servant à l'amenée du courant, caractérisée en ce que dans la couche de métal à basse impédance est ménagée une rainure (20) se développant essentiellement parallèlement aux barres collectrices (23, 24), les deux bords de la rainure sont reliés ensemble par une bobine translatrice (25) et le conducteur intérieur (26) du câble coaxial est relié à la bobine translatrice (25) et le conducteur extérieur (27) du câble coaxial se trouve au potentiel du châssis.
EP89103269A 1988-03-12 1989-02-24 Fenêtre pour véhicule Expired - Lifetime EP0332898B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3808401 1988-03-12
DE3808401A DE3808401A1 (de) 1988-03-12 1988-03-12 Sichtscheibe fuer fahrzeuge

Publications (2)

Publication Number Publication Date
EP0332898A1 EP0332898A1 (fr) 1989-09-20
EP0332898B1 true EP0332898B1 (fr) 1993-06-02

Family

ID=6349654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103269A Expired - Lifetime EP0332898B1 (fr) 1988-03-12 1989-02-24 Fenêtre pour véhicule

Country Status (4)

Country Link
US (1) US5012255A (fr)
EP (1) EP0332898B1 (fr)
DE (2) DE3808401A1 (fr)
ES (1) ES2043914T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503892C1 (de) * 1995-02-07 1996-10-24 Sekurit Saint Gobain Deutsch Mit einer elektrischen Leitschicht versehene Autoglasscheibe
US7106262B2 (en) 2001-09-20 2006-09-12 Pilkington Automotive Deutschland Gmbh Double on-glass slot antenna
US7764239B2 (en) 2002-09-17 2010-07-27 Pilkington Automotive Deutschland Gmbh Antenna pane including coating having strip-like segmented surface portion

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DE3938739A1 (de) * 1989-11-10 1991-08-08 Bosch Gmbh Robert Fahrzeugantenne
JPH082926Y2 (ja) * 1991-03-29 1996-01-29 日本板硝子株式会社 アンテナコネクタ
US5355144A (en) * 1992-03-16 1994-10-11 The Ohio State University Transparent window antenna
US5644321A (en) * 1993-01-12 1997-07-01 Benham; Glynda O. Multi-element antenna with tapered resistive loading in each element
DE69421028T2 (de) * 1993-09-10 2000-02-03 Ford-Werke Ag Schlitzantenne mit reduzierter Erdungsfläche
KR0145052B1 (ko) * 1993-12-29 1998-08-01 와다 요시히로 차량용 안테나 및 그 설정방법
DE4415675C1 (de) * 1994-05-04 1995-08-31 Flachglas Ag Fahrzeug-Antennenscheibe für breitbandigen Empfang bis in den UHF-Bereich
DE19541743A1 (de) 1994-12-08 1996-06-13 Bosch Gmbh Robert Metallisierte Glasscheibe
CA2212015A1 (fr) * 1995-02-06 1996-08-15 John R. Benham Antennes de television
JPH10513329A (ja) * 1995-02-06 1998-12-15 メガウエイブ コーポレーション 窓ガラスアンテナ
US5739794A (en) * 1995-05-22 1998-04-14 General Motors Corporation Vehicle window antenna with parasitic slot transmission line
US5528314A (en) * 1995-05-22 1996-06-18 General Motors Corporation Transparent vehicle window antenna
US5648785A (en) * 1995-05-22 1997-07-15 General Motors Corporation Vehicle window with antenna connection apparatus
US5905468A (en) * 1995-08-23 1999-05-18 Asahi Glass Company Ltd. Glass antenna device for vehicles
DE19532431C2 (de) * 1995-09-02 1998-07-02 Flachglas Automotive Gmbh Antennenscheibe in zumindest einer Fensteröffnung einer metallischen Karosserie eines Kraftfahrzeugs, insbesondere Personenkraftfahrzeugs
US5812095A (en) * 1995-10-06 1998-09-22 Ford Motor Company Mounting structure for combined automotive trim accessory and antenna
US5629712A (en) * 1995-10-06 1997-05-13 Ford Motor Company Vehicular slot antenna concealed in exterior trim accessory
DE19730173A1 (de) * 1997-07-15 1999-01-21 Fuba Automotive Gmbh Kraftfahrzeug-Karosserie aus Kunststoff mit Antennen
DE19817573A1 (de) * 1998-04-20 1999-10-21 Heinz Lindenmeier Antenne für mehrere Funkdienste
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AU4564400A (en) 1999-05-20 2000-12-12 Glaverbel Automotive glazing panel having an electrically heatable solar control coating layer
ATE279088T1 (de) * 1999-05-20 2004-10-15 Glaverbel Glasscheibe für kraftfahrzeuge mit einer sonnenlicht-kontroll beschichtung, welche mit einem datenübertragungsfenster versehen ist
US6359593B1 (en) 2000-08-15 2002-03-19 Receptec Llc Non-radiating single slotline coupler
JP2002151939A (ja) * 2000-10-03 2002-05-24 Internatl Business Mach Corp <Ibm> アンテナ装置、情報処理装置および携帯電話
WO2002081842A1 (fr) * 2001-04-03 2002-10-17 James Hardie Research Pty Limited Article en fibrociment renforce et procedes de production et d'installation
TW535329B (en) * 2001-05-17 2003-06-01 Acer Neweb Corp Dual-band slot antenna
DE10127847A1 (de) * 2001-06-08 2002-12-19 Webasto Vehicle Sys Int Gmbh Transparente Scheibe für ein Fahrzeugdach mit wenigstens einem Dachelement oder für ein Dachmodul für ein Fahrzeugdach
US7295154B2 (en) * 2002-01-17 2007-11-13 The Ohio State University Vehicle obstacle warning radar
AU2003273401A1 (en) * 2002-09-17 2004-04-08 Pilkington Automotive Deutschland Gmbh Antenna pane
DE10245250A1 (de) * 2002-09-27 2004-04-15 Daimlerchrysler Ag Beheizbare Fensterscheibe
US6922175B2 (en) * 2002-12-04 2005-07-26 The Ohio State University Radio transmission region in metallic panel
US6860081B2 (en) * 2002-12-04 2005-03-01 The Ohio State University Sidelobe controlled radio transmission region in metallic panel
US7196657B2 (en) * 2003-01-31 2007-03-27 The Ohio State University Radar system using RF noise
JP2005012588A (ja) * 2003-06-20 2005-01-13 Nippon Sheet Glass Co Ltd 車両用ガラスアンテナ装置
GB0501197D0 (en) * 2005-01-20 2005-03-02 Pilkington Plc Heatable vehicle glazing
JP4405954B2 (ja) * 2005-10-27 2010-01-27 株式会社デンソー 放射ノイズの回り込み抑制方法
BRPI1015942A2 (pt) 2009-07-09 2016-04-19 Asahi Glass Co Ltd vidro de janela para veículo e antena.
US20110006050A1 (en) * 2009-07-13 2011-01-13 Joseph Patrick Nee Thermally Heated Collapsible Sun shade
GB0922191D0 (en) 2009-12-21 2010-02-03 Pilkington Group Ltd Vehicle glazing
US8466842B2 (en) * 2010-10-22 2013-06-18 Pittsburgh Glass Works, Llc Window antenna
US8576130B2 (en) * 2010-10-22 2013-11-05 Pittsburgh Glass Works, Llc Wideband antenna
JP2014033243A (ja) 2010-11-30 2014-02-20 Asahi Glass Co Ltd 車両用窓ガラス及びアンテナ
EP2649671B2 (fr) † 2010-12-09 2019-10-16 AGC Automotive Americas R & D, Inc. Ensemble fenêtre doté d'une couche transparente avec une rainure pour un élément d'antenne transparent
JP2014045230A (ja) * 2010-12-28 2014-03-13 Asahi Glass Co Ltd アンテナ装置
US9425516B2 (en) 2012-07-06 2016-08-23 The Ohio State University Compact dual band GNSS antenna design
CN105075008B (zh) * 2013-02-21 2017-09-01 旭硝子株式会社 车辆用窗玻璃及天线
JP2016105527A (ja) * 2013-03-14 2016-06-09 旭硝子株式会社 車両用窓ガラス
CN105229849B (zh) 2013-03-15 2017-05-31 Agc汽车美洲研发公司 具有性能增强狭缝形成于其中的透明区域的窗户组件
WO2014157535A1 (fr) 2013-03-27 2014-10-02 旭硝子株式会社 Verre à vitre de véhicule, et antenne
US9337525B2 (en) 2014-02-03 2016-05-10 Pittsburgh Glass Works, Llc Hidden window antenna
WO2018180120A1 (fr) * 2017-03-29 2018-10-04 セントラル硝子株式会社 Antenne et vitre de fenêtre
US20250372887A1 (en) * 2024-05-28 2025-12-04 GM Global Technology Operations LLC Vertically polarized low profile slot antenna on glass beside a conductor

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EP0155647A2 (fr) * 1984-03-21 1985-09-25 Hans Kolbe & Co. Arrangement d'antenne dans la vitre arrière d'une voiture

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503892C1 (de) * 1995-02-07 1996-10-24 Sekurit Saint Gobain Deutsch Mit einer elektrischen Leitschicht versehene Autoglasscheibe
US7106262B2 (en) 2001-09-20 2006-09-12 Pilkington Automotive Deutschland Gmbh Double on-glass slot antenna
US7764239B2 (en) 2002-09-17 2010-07-27 Pilkington Automotive Deutschland Gmbh Antenna pane including coating having strip-like segmented surface portion

Also Published As

Publication number Publication date
DE3808401A1 (de) 1989-09-21
EP0332898A1 (fr) 1989-09-20
DE58904538D1 (de) 1993-07-08
ES2043914T3 (es) 1994-01-01
US5012255A (en) 1991-04-30

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