EP0837521B1 - Radio antenna array and patch antenna on a motor vehicle window - Google Patents

Radio antenna array and patch antenna on a motor vehicle window Download PDF

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Publication number
EP0837521B1
EP0837521B1 EP97117080A EP97117080A EP0837521B1 EP 0837521 B1 EP0837521 B1 EP 0837521B1 EP 97117080 A EP97117080 A EP 97117080A EP 97117080 A EP97117080 A EP 97117080A EP 0837521 B1 EP0837521 B1 EP 0837521B1
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EP
European Patent Office
Prior art keywords
antenna
radio
cable
arrangement according
emitter
Prior art date
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EP97117080A
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German (de)
French (fr)
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EP0837521A2 (en
EP0837521A3 (en
Inventor
Heinz Lindenmeier
Jochem Hopf
Leopold Reiter
Rainer Kronberger
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Fuba Automotive GmbH and Co KG
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Fuba Automotive GmbH and Co KG
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Application filed by Fuba Automotive GmbH and Co KG filed Critical Fuba Automotive GmbH and Co KG
Publication of EP0837521A2 publication Critical patent/EP0837521A2/en
Publication of EP0837521A3 publication Critical patent/EP0837521A3/en
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    • 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
    • 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
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system

Definitions

  • the invention relates to a radio antenna arrangement for radio connections terrestrial radio stations for decimeter and / or centimeter waves, with one on the outside of the vehicle near the top of the window an inclined window 1 in a vehicle body mounted antenna element and with one on the Vehicle roof 10 or the window or the dividing line between roof and window partially overlapping base plate 4 with the on this attached and protruding antenna element as a radiator 3 with a Radiator connection point 2.
  • Radio antennas of this type are e.g. known from WO 93/23890 and executed as Group antennas in DE 4 339 162
  • Such antennas are often either on the roof of the vehicle, or on the Rear or front window attached to its upper edge. In special cases may the attachment also directly in the area of the dividing line between the the upper edge of the window and the vehicle roof, as it is e.g. in DE 4 339 162 (Fig. 6).
  • the GSM system is an example of the radio telephone services (D network) and the mobile radio system E network as well as the AMPS system used in the USA called that work in the frequency range from 800 MHz to 1900 MHz.
  • a satellite radio service should often be possible, such as. the Global Positioning System (GPS), or one in planning bidirectional satellite radio service with low-flying satellites (Leos), or a receiving antenna for terrestrial digital audio broadcasting signals in the L-band. All the services mentioned work in the range from 1400 to 1600 MHz.
  • the object of the invention is therefore a radio antenna arrangement according to the preamble of claim 1 with a patch antenna for to combine the satellite radio services in a space-saving way, that the strong signal coupling due to the crowded structure in the transmission mode of one antenna, the reception with the other antenna is not disturbed.
  • the common base plate 4 serves both as electrical counterweight for the radiator 3 as well as for the Patch antenna 7.
  • the radiation coupling between the radiator 3, which is designed as a rod radiator, and the patch antenna is smallest when the patch antenna as shown in FIG Spotlight is oriented, with the perpendicular bisector one Patch edge with the connecting line of the spotlight center whose lower end coincides with the center of the patch. Satellite radio services work for vehicle communication in the Frequency range around 1.5 GHz.
  • D-network / AMPS network antennas operate in the frequency range around 800 MHz or 900 MHz.
  • the resonance frequencies of the radiators and the Patch antennas are thus far enough apart.
  • the frequency spacing is sufficiently large to accommodate Arrange the patch antenna and the radiators so close together.
  • the patch antenna is in an embodiment of the invention between two emitters of the Mobile telephones arranged to save space. It is special Advantage of the invention that the DC power supply of the GPS antenna amplifier on the base plate 4, for example, over the signal-carrying conductor of an antenna line can take place. This ensures an optimal signal to noise ratio in the GPS reception system.
  • the antenna characteristics of the patch antenna is normal to the glass pane with its main direction. The large opening angle of the antenna lobe in connection with the flat angles of inclination of current front or rear window arrangements ensures the necessary radio contact to the satellites.
  • a particular problem is the edge radiation of the cell phone radiators in the form of noise on the reception frequency of the Satellite antenna. It is therefore often necessary to do this Edge emission by a bandstop on the frequency of the Satellite reception, which is in the signal path between the antenna line 5 and cellular radiator is switched to suppress (see Fig. 4a).
  • the Antenna line can be designed as a multiple line.
  • the signal-carrying conductor is extremely narrow must be realized so that a wave resistance of 50 ohms is realized can be.
  • the signal-carrying conductor can be very narrow between the be embedded in both outer ground surfaces. The outer Ground areas are spaced at appropriate intervals using Vias 19 connected to each other. Because of the very narrow signal-carrying conductor 20 can only relatively small high-frequency powers are transmitted, such as as reception powers of a satellite signal given are. In contrast to that, is the cellular antenna High-frequency power to be transmitted for one line this shape too big.
  • the two outer conductor layers are too large to avoid capacities removed in the area of the coplanar line.
  • narrow conductor bridges 22 are such designed that the wave resistance requirement at the concerned Frequency is satisfied. With the help of appropriately attached Vias 19, the ground surfaces 24 on both sides of the multiple line electrically connected become.

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Description

Die Erfindung betrifft eine Funkantennenanordnung für Funkverbindungen mit terrestrischen Funkstellen für Dezimeter- und/oder Zentimeterwellen, mit einem auf der Aussenseite des Kraftfahrzeugs in der Nähe des oberen Fensterrands einer geneigten Fensterscheibe 1 in einer Fahrzeugkarosserie angebrachtem Antennenelement und mit einer auf dem Fahrzeugdach 10 bzw. dem Fenster oder die Trennlinie zwischen Dach und Fenster teilweise überdeckend angebrachten Grundplatte 4 mit dem auf dieser befestigten und von ihr abragenden Antennenelement als Strahler 3 mit einer Strahleranschlußstelle 2.The invention relates to a radio antenna arrangement for radio connections terrestrial radio stations for decimeter and / or centimeter waves, with one on the outside of the vehicle near the top of the window an inclined window 1 in a vehicle body mounted antenna element and with one on the Vehicle roof 10 or the window or the dividing line between roof and window partially overlapping base plate 4 with the on this attached and protruding antenna element as a radiator 3 with a Radiator connection point 2.

Funkantennen dieser Art sind z.B. bekannt aus WO 93/23890 sowie ausgeführt als Gruppenantennen in DE 4 339 162 Solche Antennen sind häufig entweder auf dem Dach des Fahrzeugs, oder auf dem Rück- oder Frontfenster an dessem oberen Rand angebracht. In besonderen Fällen mag die Anbringung auch unmittelbar im Bereich der Trennlinie zwischen dem oberen Fensterrand und dem Fahrzeugdach sinnvoll sein, wie es z.B in DE 4 339 162 (Fig. 6) beschrieben ist.Radio antennas of this type are e.g. known from WO 93/23890 and executed as Group antennas in DE 4 339 162 Such antennas are often either on the roof of the vehicle, or on the Rear or front window attached to its upper edge. In special cases may the attachment also directly in the area of the dividing line between the the upper edge of the window and the vehicle roof, as it is e.g. in DE 4 339 162 (Fig. 6).

Die Problematik dieser Antennen besteht unter anderem in der Signalzuführung, welche bei Anbringung auf der Fensterscheibe nach dem Stande der Technik über kapazitiv wirkende Koppelelemente auf der Glasscheibe 1 realisiert ist, oder bei Anbringung im Dachbereich einen fahrzeugtechnisch ünerwünschten. Durchbruch im Dach erzwingt.The problem with these antennas is, among other things, the signal feed, which when attached to the window pane according to the prior art capacitively acting coupling elements on the glass pane 1 is realized, or when installed in the roof area, an undesirable in terms of vehicle technology. breakthrough enforced in the roof.

Eine weitere Problematik besteht darin, daß bei modernen Funksystemen in Fahrzeugen häufig die gleichzeitige Kommunikation mit mehreren Funkdiensten zu erfolgen hat. Als Beispiel seien für die Funktelefondienste das GSM-System (D-Netz) und das Mobilfunksystem E-Netz sowie das in USA verwendete AMPS-System genannt, die im Frequenzbereich von 800 MHz bis 1900 MHz arbeiten. Häufig soll neben dem Telefondienst ein Satellitenfunkdienst ermöglicht sein, wie z.B. das Global Positioning-System (GPS), oder ein in Planung befindlicher bidirektionaler Satellitenfunkdienst mit niedrig fliegenden Satelliten (Leos), oder eine Empfangsantenne für terrestrische Digital Audio Broadcasting-Signale im L-Band. Alle genannten Dienste arbeiten im Bereich von 1400 bis 1600 MHz.Another problem is that in modern radio systems in Vehicles often allow simultaneous communication with multiple radio services has taken place. The GSM system is an example of the radio telephone services (D network) and the mobile radio system E network as well as the AMPS system used in the USA called that work in the frequency range from 800 MHz to 1900 MHz. In addition to the telephone service, a satellite radio service should often be possible, such as. the Global Positioning System (GPS), or one in planning bidirectional satellite radio service with low-flying satellites (Leos), or a receiving antenna for terrestrial digital audio broadcasting signals in the L-band. All the services mentioned work in the range from 1400 to 1600 MHz.

Erfahrungsgemäß findet die getrennte Anbringung mehrerer Antennen auf dem Fahrzeug geringe Akzeptanz und es besteht der Wunsch nach einer Kombinationsantenne, welche mehrere Funkdienste abdeckt.Experience has shown that several antennas are attached separately on the Vehicle low acceptance and there is a desire for one Combination antenna, which covers several radio services.

Aufgabe der Erfindung ist es daher, eine Funkantennenanordnung nach dem Oberbegriff des Anspruchs 1 mit einer Patchantenne für die Satellitenfunkdienste raumsparend zu kombinieren derart, daß die durch den gedrängten Aufbau bedingte starke Signaleinkopplung im Sendebetrieb der einen Antenne, der Empfang mit der anderen Antenne nicht gestört ist.The object of the invention is therefore a radio antenna arrangement according to the preamble of claim 1 with a patch antenna for to combine the satellite radio services in a space-saving way, that the strong signal coupling due to the crowded structure in the transmission mode of one antenna, the reception with the other antenna is not disturbed.

Diese Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Anspruchs 1 gelöst.This object is achieved by the characterizing Part of claim 1 solved.

Im folgenden wird die Erfindung anhand der Figuren näher erläutert. Im einzelnen zeigen:

  • Fig. 1
    Antenne nach der Erfindung mit Strahler 3, Patchantenne 7, auf Grundplatte 4 und Antennenleitung 5, verlegt über die Oberkante der Glasscheibe durch die Kleberaupe 6 in den Fahrzeuginnenraum. Anbringung auf a)der Fensterscheibe; b) dem Dach
  • Fig. 2
    Draufsicht auf eine Antenne nach der Erfindung mit Patchanordnung für kleinstmögliche Strahlungskopplung zwischen Strahler 3 und Patch 7.
  • Fig. 3
    Funkgruppenantenne mit zwei Strahlern und dazwischenliegender Patchantenne 7 mit Vorverstärker. Anbringung auf a)der Fensterscheibe; b) dem Dach
  • Fig. 4a,b
    Beispiel eines Blockschaltbilds der Antennenanordnung mit Bandsperren und Bandpässen im jeweiligen Funkdienst GSM und GPS.
  • Fig. 5
    Ausführungsform einer Mehrfach-Flachbandleitung mit einer Streifenleitung für kleine Leistungen und einer Koplanarleitung für große Leistungen in Dreilagentechnik mit ausgesparten Masseflächen im Bereich der Koplanarleitung und Leiterbrücken zwischen den Masseflächen.
    • The invention is explained in more detail below with reference to the figures. In detail show:
  • Fig. 1
    Antenna according to the invention with radiator 3, patch antenna 7, on base plate 4 and antenna line 5, laid over the upper edge of the glass pane through the adhesive bead 6 in the vehicle interior. Installation on a) the window pane; b) the roof
  • Fig. 2
    Top view of an antenna according to the invention with a patch arrangement for the smallest possible radiation coupling between radiator 3 and patch 7.
  • Fig. 3
    Radio group antenna with two radiators and patch antenna 7 with preamplifier in between. Installation on a) the window pane; b) the roof
  • 4a, b
    Example of a block diagram of the antenna arrangement with bandstops and bandpasses in the respective radio service GSM and GPS.
  • Fig. 5
    Embodiment of a multiple ribbon cable with a strip line for small outputs and a coplanar line for large outputs in three-layer technology with recessed ground areas in the area of the coplanar line and conductor bridges between the ground surfaces.

    • Insbesondere bei Anbringung von Antennen auf Fensterscheiben ist es notwendig, die durch die Antenne abgedeckte Sichtfläche so klein wie möglich zu halten. Aus diesem Grund ist es notwendig, die Patchantenne 7, wie in Fig. 1, nahe an den Strahler 3 heranzurücken. Die gemeinsame Grundplatte 4 dient sowohl als elektrisches Gegengewicht für den Strahler 3 als auch für die Patchantenne 7. Die Strahlungskopplung zwischen dem Strahler 3, welcher als Stabstrahler ausgeführt ist, und der Patchantenne ist dann am kleinsten, wenn die Patchantenne wie in Fig. 2 zum Strahler orientiert ist, wobei die Mittelsenkrechte einer Patchkante mit der Verbindungslinie des Strahlerzentrums an dessem unteren Ende mit dem Patchmittelpunkt zusammenfällt. Satellitenfunkdienste arbeiten für die Fahrzeugkommunikation im Frequenzbereich um 1,5 GHz.Especially when attaching antennas to window panes it is necessary to see the visible area covered by the antenna to keep it as small as possible. Because of this, it is necessary the patch antenna 7, as in Fig. 1, close to the radiator 3 approach. The common base plate 4 serves both as electrical counterweight for the radiator 3 as well as for the Patch antenna 7. The radiation coupling between the radiator 3, which is designed as a rod radiator, and the patch antenna is smallest when the patch antenna as shown in FIG Spotlight is oriented, with the perpendicular bisector one Patch edge with the connecting line of the spotlight center whose lower end coincides with the center of the patch. Satellite radio services work for vehicle communication in the Frequency range around 1.5 GHz.

    D-Netz/AMPS-Netz-Antennen arbeiten im Frequenzbereich um 800 MHz bzw. 900 MHz. Die Resonanzfrequenzen der Strahler sowie der Patchantenne sind somit weit genug voneinander entfernt. Auch bei Einsatz des Mobilfunk E-Netzes mit seiner Betriebsfrequenz um 1800 MHz ist der Frequenzabstand ausreichend groß, um die Patchantenne und die Strahler derart dicht nebeneinander anzuordnen.D-network / AMPS network antennas operate in the frequency range around 800 MHz or 900 MHz. The resonance frequencies of the radiators and the Patch antennas are thus far enough apart. Also when using the cellular E network with its operating frequency around 1800 MHz the frequency spacing is sufficiently large to accommodate Arrange the patch antenna and the radiators so close together.

    Insbesondere bei Empfang von GPS-Signalen ist es notwendig, der Patchantenne ohne Zwischenschaltung verlustbehafteter Leitungen einen rauscharmen Vorverstärker nachzuschalten. Dieser kann zweckmäßig in einer vorteilhaften Ausführungsform der Erfindung ebenfalls auf der Grundplatte 4 angebracht werden, wie es aus Fig. 3 hervorgeht. In diesem Beispiel isc die Patchantenne in einer Ausführungsform der Erfindung zwischen zwei Strahlern des Mobilfunktelefons raumsparend angeordnet. Es ist ein besonderer Vorteil der Erfindung, daß die Gleichstromspeisung des GPS-Antennenverstärkers auf der Grundplatte 4 zum Beispiel über den signalführenden Leiter einer Antennenleitung erfolgen kann. Dies gewährleistet ein optimales Signalrauschverhältnis in der GPS-Empfangsanlage. Die Antennencharakteristik der Patchantenne ist mit ihrer Hauptrichtung normal zur Glasscheibe gerichtet. Der große Öffnungswinkel der Antennenkeule in Verbindung mit den flachen Neigungswinkeln derzeit üblicher Front- oder Heckscheibenanordnungen gewährleistet den notwendigen Funkkontakt zu den Satelliten. Especially when receiving GPS signals, it is necessary to Patch antenna without the interposition of lossy lines connect a low-noise preamplifier. This can expedient in an advantageous embodiment of the invention also be attached to the base plate 4 as it is made Fig. 3 emerges. In this example the patch antenna is in an embodiment of the invention between two emitters of the Mobile telephones arranged to save space. It is special Advantage of the invention that the DC power supply of the GPS antenna amplifier on the base plate 4, for example, over the signal-carrying conductor of an antenna line can take place. This ensures an optimal signal to noise ratio in the GPS reception system. The antenna characteristics of the patch antenna is normal to the glass pane with its main direction. The large opening angle of the antenna lobe in connection with the flat angles of inclination of current front or rear window arrangements ensures the necessary radio contact to the satellites.

    Eine besondere Problematik ist die Randausstrahlung der Mobilfunkstrahler in Form von Rauschen auf der Empfangsfrequenz der Satellitenantenne. Es ist deshalb häufig notwendig, diese Randausstrahlung durch eine Bandsperre auf der Frequenz des Satellitenempfangs, welche in den Signalweg zwischen Antennenleitung 5 und Mobilfunkstrahler geschaltet ist, zu unterdrücken (siehe Fig. 4a).A particular problem is the edge radiation of the cell phone radiators in the form of noise on the reception frequency of the Satellite antenna. It is therefore often necessary to do this Edge emission by a bandstop on the frequency of the Satellite reception, which is in the signal path between the antenna line 5 and cellular radiator is switched to suppress (see Fig. 4a).

    Vielfach ist es auch zweckmäßig, zum Schutz des empfangenen Satellitensignals und zum Schutz vor Bildung von Störfrequenzen durch nichtlineare Effekte empfangener Signale der Patchantenne, einen Bandpaß nachzuschalten. Dieser schützt den an seinen Ausgang angeschlossenen rauscharmen Verstärker vor unerwünschten Signalen. Aufgrund der im Nahfeld der Mobilfunkstrahler äußerst großen Feldstärken ist es erfindungsgemäß häufig vorteilhaft, zwischen Patchantenne und der oben beschriebenen nachfolgenden Schaltung eine Bandsperre auf der Mobilfunkfrequenz einzubringen, um nichtlineare Effekte in den Bauelementen sicher auszuschließen. Dem gleichen Zweck dient erfindungsgemäß auch eine dem Vorverstärker nachgeschaltete. Bandsperre im Mobilfunkfrequenzbereich (siehe Fig. 4b).In many cases, it is also useful to protect the received Satellite signal and to protect against the formation of interference frequencies through non-linear effects of received signals from the patch antenna, to add a bandpass. This protects the its output connected low noise amplifier from unwanted Signals. Because of the near field of cellular radiators it is extremely large field strengths according to the invention often beneficial between patch antenna and the above described subsequent circuit a bandstop on the Mobile radio frequency to introduce nonlinear effects in the Exclude components safely. Serves the same purpose according to the invention also a downstream of the preamplifier. Band stop in the mobile radio frequency range (see Fig. 4b).

    Vielfach besteht der Wunsch nach einer besonders flachen Antennenleitung. Diese kann vorzugsweise in Multilayer-Technik äusgeführt werden.. In einer besonders vorteilhaften Form kann die Antennenleitung als Mehrfachleitung ausgeführt werden. Bei sehr dünnen Leitungen in Streifenleitungstechnik besteht die Problematik, daß der signalführende Leiter extrem schmal ausgeführt werden muß, damit ein Wellenwiderstand von 50 Ohm realisiert werden kann. Zur Gewährleistung einer guten Entkopplung zwischen den einzelnen Antennenleitungen der Mehrfachleitung, ist diese in Dreilagentechnik, wie in Fig. 5, gestaltet. Hierbei kann der signalführende Leiter sehr schmal zwischen die beiden äußeren Masseflächen eingebettet werden. Die äußeren Masseflächen werden in geeigneten Abständen mit Hilfe von Durchkontaktierungen 19 miteinander verbunden. Aufgrund des sehr schmal ausgeführten signalführenden Leiters 20 können nur verhältnismäßig kleine Hochfrequenzleistungen übertragen werden, wie sie z.B. als Empfangsleistungen eines Satellitensignals gegeben sind. Im Gegensatz hierzu, ist die zur Mobilfunkantenne zu übertragende Hochfrequenzleistung für eine Leitung dieser Form zu groß.There is often a desire for a particularly flat antenna cable. This can preferably be carried out using multilayer technology In a particularly advantageous form, the Antenna line can be designed as a multiple line. At very thin lines in stripline technology there is the problem that the signal-carrying conductor is extremely narrow must be realized so that a wave resistance of 50 ohms is realized can be. To ensure good decoupling between the individual antenna lines of the multiple line, is designed in three-layer technology, as in Fig. 5. in this connection the signal-carrying conductor can be very narrow between the be embedded in both outer ground surfaces. The outer Ground areas are spaced at appropriate intervals using Vias 19 connected to each other. Because of the very narrow signal-carrying conductor 20 can only relatively small high-frequency powers are transmitted, such as as reception powers of a satellite signal given are. In contrast to that, is the cellular antenna High-frequency power to be transmitted for one line this shape too big.

    In einer vorteilhaften Ausführungsform der Erfindung wird deshalb, wie in Fig. 5, ein vergleichsweise breiter signalführender Leiter 21 in der mittleren Lage der Dreilagenanordnung als Koplanarleitung ausgebildet. Die beiden äußeren Leiterlagen werden zur Vermeidung zu großer Kapazitäten im Bereich der Koplanarleitung weggenommen. Um dennoch eine elektrische Verbindung zwischen den äußeren Metallbelägen der Mehrfachleitung herzustellen, werden in Abständen, welche klein sind gegenüber der Wellenlänge, schmale Leiterbrücken 22 derart gestaltet, daß die Wellenwiderstandsforderung bei der betreffenden Frequenz erfüllt ist. Mit Hilfe von geeignet angebrachten Durchkontaktierungen 19, können die Masseflächen 24 auf beiden Seiten der Mehrfachleitung elektrisch miteinander verbunden werden.In an advantageous embodiment of the invention therefore, as in Fig. 5, a comparatively broad signal-carrying Head 21 in the middle position of the three-layer arrangement trained as a coplanar line. The two outer conductor layers are too large to avoid capacities removed in the area of the coplanar line. To still be one electrical connection between the outer metal coverings of the To produce multiple lines become small at intervals compared to the wavelength, narrow conductor bridges 22 are such designed that the wave resistance requirement at the concerned Frequency is satisfied. With the help of appropriately attached Vias 19, the ground surfaces 24 on both sides of the multiple line electrically connected become.

    Claims (18)

    1. A radio antenna arrangement for radio connection with terrestrial radio stations for decimetre and/or centimetre waves, with an antenna element disposed on the outside of the motor vehicle in the vicinity of the upper edge of an inclined windscreen (1) in a vehicle chassis, with a base plate (4) disposed on the vehicle roof (10) or on the windscreen or partially overlapping the separating line between the roof and the windscreen, on which the antenna element as an emitter (3) is fixed and from which it projects, and with an emitter connection point (2), characterised in that the base plate is electrically conductive, at least in substantial areas, and works as an electrical counterweight of the emitter (3) so that the emitter connection point (2) is formed between the emitter (3) and the base plate (4), to which a sufficiently thin antenna cable (5) is attached which is guided to the windscreen (1) or onto the vehicle roof (10) to the upper edge of the windscreen, is kinked and is then guided on the interior surface of the windscreen through the windscreen adhesion bead (6) into the interior of the vehicle, and that as well as the emitter (3), a patch antenna (7) with patch connection point (8) for a further radio service is attached to the base plate (4), wherein the patch antenna signal is also guided from the patch connection point (8) either via the same antenna cable or via another sufficiently thin antenna cable (9) which extends on the windscreen (1) or on the vehicle roof (10) to the upper edge of the windscreen, is kinked and is then guided on the interior surface of the windscreen through the windscreen adhesion bead (6) into the interior of the vehicle.
    2. A radio antenna arrangement according to claim 1, characterised in that the emitter 83) substantially has the form of a vertically-orientated rod emitter and the patch antenna is orientated towards the emitter in such a way that the connection line (18) between the lower end of the emitter (11) and the central point of the patch antenna (7) is congruent with the central perpendicular on one of the edges of the patch antenna.
    3. A radio antenna arrangement according to claim 1 and 2, characterised in that a bandpass is connected between the patch antenna connection point (8) and the further antenna cable (9), this bandpass only conducting signals in the reception frequency range of the patch antenna.
    4. A radio antenna arrangement according to claim 1 and 2, characterised in that a low-noise pre-amplifier (13) is connected between the patch antenna connection point (8) and the further antenna cable (9) and the power supply of the pre-amplifier is either guided via the internal conductor of the further antenna cable (9) or via an additional, similarly-configured cable.
    5. A radio antenna arrangement according to claim 3, characterised in that a bandpass is connected between the patch antenna connection point (8) and the further antenna cable (9), which only conducts signals in the reception frequency range of the patch antenna, which is disposed on the base plate, and a low-noise pre-amplifier is connected downstream of this, also disposed on the base plate (4), and the power supply of the pre-amplifier is either guided via the internal conductor of the further antenna cable (9) or via an additional, similarly-configured cable.
    6. A radio antenna arrangement according to claims 1 to 5, characterised in that in order to form a group antenna for radio connection with terrestrial radio stations, at least one second emitter (14) with a second emitter connection point (15) is provided and the emitter connection points are optionally electrically linked via a network (16) and a group antenna connection point (17) is formed on the base plate (4) to which the antenna cable (5) for radio connection to terrestrial radio stations is connected and the patch antenna (7) is disposed in the area between the emitters on the base plate.
    7. A radio antenna arrangement according to claim 1 to 6, characterised in that separate antenna cables are provided for the radio antenna for radio connection with terrestrial radio stations and the antenna for a further radio service and that a band-stop filter is provided in the signal path between the antenna cable (5) and the emitter (3) to suppress marginal irradiation of the radio antenna for terrestrial radio stations into the antenna for the further radio service, with a blocking effect in the frequency range of the further radio service.
    8. A radio antenna arrangement according to claim 7, however characterised in that a band-stop filter is provided to protect the radio antenna for radio connection with terrestrial radio stations from marginal irradiation from the antenna for the further radio service in the signal path between further antenna cable (9) and patch antenna (7).
    9. A radio antenna arrangement according to claim 8 and 9, characterised in that both band-stop filter measures are combined.
    10. A radio antenna arrangement according to claim 8 and 9, characterised in that the base plate is configured as a printed circuit, optionally multi-layer, and is configured both as an electrical element for electrical switching of the signal paths and as a mechanical carrier for the electronic components.
    11. A radio antenna arrangement according to claim 1 to 10, characterised in that the antenna cable or cables are configured as two-layer microwave strip cables disposed in parallel with a thin conductor over an earth surface or three-layer with two earth surfaces (24), which are connected together at a suitable spacing by means of through-contacts (19) and a thin signal-carrying conductor (20) disposed between these surfaces, and all cables are preferably formed.in a composite as a multiple cable.
    12. A radio antenna arrangement according to claim 1 to 10, characterised in that for high-capacity transmission, an antenna cable is configured as a coplanar cable with a comparatively wide signal-carrying conductor (21) and a wide earth surface (23).
    13. A radio antenna arrangement according to claim 11 and 12, characterised in that all cables in the composite are configured as a thin, three-layer multiple cable and one of the antenna cables is configured with two external earth surfaces (24) which are connected together in a suitable manner by through-contacts (19) and a signal-carrying conductor (20), which is disposed between these surfaces and is very thin in order to maintain the wave resistance requirement, and that for high-capacity transmission, one of the antenna cables is configured as a coplanar cable with a comparatively wide signal-carrying conductor (21) in the central layer of the three-layer arrangement and the two outer conductor layers are removed in the area of the coplanar cable but are connected together with narrow conductor bridges (22) at a spacing which is small in comparison to the wavelength, and the spacing and the width of the conductor bridges (22) are selected so that the wave resistance requirement is fulfilled in the case of the relevant frequency.
    14. A radio antenna arrangement according to claim 13, characterised in that all cables in the composite are configured as a thin three-layer multiple cable and one of the antenna cables is configured with the two external earth surfaces (24) with through-contact points (19) and a signal-carrying conductor (20), which is disposed between these surfaces and is very thin in order to maintain the wave resistance requirement, and that for high-capacity transmission, one of the antenna cables is disposed on one of the edges of the multi-layer cable and is configured as a coplanar cable or as an asymmetrical coplanar cable with a comparatively wide signal-carrying conductor (21) in the central layer of the three-layer arrangement and the two outer conductor layers (24) are removed in the area of the coplanar cable.
    15. A radio antenna arrangement according to claim 1 to 6, characterised in that separate antenna cables are provided for the radio antenna for radio connection with terrestrial radio stations and the antenna for a further radio service and that a band-stop filter is provided in the signal path between the antenna cable (5) and the emitter (3) to suppress marginal irradiation of the radio antenna for terrestrial radio stations into the antenna for the further radio service, with a blocking effect in the frequency range of the further radio service.
    16. A radio antenna arrangement according to claim 1 to 15, characterised in that a band-stop filter is provided with a blocking effect in the frequency range of the radio antenna for radio connection with terrestrial radio stations to protect from non-linear effects in the signal path of the further radio service.
    17. A radio antenna arrangement according to claim 1 to 16, characterised in that the emitter (3) or emitters are configured for formation of a group antenna for radio connection with terrestrial radio stations and optionally the network for further radio services (e.g. D-Netz and E-Netz and AMPS) and alternatively, a signal of the provided terrestrial radio services is transmitted and received via the antenna cable (5).
    18. A radio antenna arrangement according to claim 1 to 17, characterised in that an additional patch antenna for an additional radio service is available on an additional frequency and the electrical signal path is similarly configured to that described in claims 1 to 17 for the patch antenna for the further radio service.
    EP97117080A 1996-10-16 1997-10-02 Radio antenna array and patch antenna on a motor vehicle window Revoked EP0837521B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19642747 1996-10-16
    DE19642747 1996-10-16

    Publications (3)

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    EP0837521A2 EP0837521A2 (en) 1998-04-22
    EP0837521A3 EP0837521A3 (en) 1998-05-06
    EP0837521B1 true EP0837521B1 (en) 2002-05-08

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    ID=7808953

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97117080A Revoked EP0837521B1 (en) 1996-10-16 1997-10-02 Radio antenna array and patch antenna on a motor vehicle window

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    US (2) US5973648A (en)
    EP (1) EP0837521B1 (en)
    DE (2) DE19740254A1 (en)
    ES (1) ES2176581T3 (en)

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    Also Published As

    Publication number Publication date
    ES2176581T3 (en) 2002-12-01
    EP0837521A2 (en) 1998-04-22
    US6140969A (en) 2000-10-31
    DE59707212D1 (en) 2002-06-13
    DE19740254A1 (en) 1998-04-23
    US5973648A (en) 1999-10-26
    EP0837521A3 (en) 1998-05-06

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