EP1447878A1 - Antenna for a radio central locking system - Google Patents

Antenna for a radio central locking system Download PDF

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Publication number
EP1447878A1
EP1447878A1 EP04001649A EP04001649A EP1447878A1 EP 1447878 A1 EP1447878 A1 EP 1447878A1 EP 04001649 A EP04001649 A EP 04001649A EP 04001649 A EP04001649 A EP 04001649A EP 1447878 A1 EP1447878 A1 EP 1447878A1
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EP
European Patent Office
Prior art keywords
antenna
vehicle
cable
signals
receiving
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Withdrawn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
EP04001649A
Other languages
German (de)
French (fr)
Inventor
Markus Pfletschinger
Dirk Dr. Wendt
Michael Wiedmann
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.)
Hirschmann Car Communication GmbH
Original Assignee
Hirschmann Electronics GmbH and Co KG
Hirschmann Electronics 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 Hirschmann Electronics GmbH and Co KG, Hirschmann Electronics GmbH filed Critical Hirschmann Electronics GmbH and Co KG
Publication of EP1447878A1 publication Critical patent/EP1447878A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—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
    • 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
    • H01Q1/1214—Supports; Mounting means for fastening a rigid aerial element through a wall
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems

Definitions

  • the invention relates to an antenna for a vehicle for transmitting or receiving Signals according to the features of the preamble of claim 1.
  • a vehicle antenna arrangement with an antenna is known from DE 295 00 961, with the various radio services such. B. radio, mobile communications and the like can be transferred.
  • This antenna arrangement are devices for Sending or receiving signals within an antenna housing or spaced from the antenna housing (in the form of a rod antenna).
  • This Housing is arranged on a base body on the vehicle roof, the Vehicle roof has an opening through which leads to the facilities are led.
  • Antenna electronics are arranged below the housing, via which the signals are processed.
  • a device for sending or receiving Signals are not from outside the vehicle roof towards the electronics (in Direction of the vehicle interior).
  • Receiving signals for one Access authorization to the vehicle (radio central locking (FZV) or keyless entry is not described in DE 295 00 961. They're also from here known devices for sending or receiving signals not for the signals suitable for access authorization.
  • antenna cables are used in the vehicle interior laid, which is a coaxial cable in which a piece of the Inner conductor is exposed and acts as an antenna. Such a cable is only in the The interior is not routed and does not pass through an opening in a surface of the vehicle. Signals from the outside by a radio remote control are only bad here receivable, since the metallic parts of the vehicle have a shielding effect. Especially Reception is poor when the panes have a vapor-deposited metallic coating Have coating.
  • disk antennas As an alternative to cables that act as antennas and are installed in the vehicle interior, So-called disk antennas are known, which have conductive structures a vehicle window the signals of the radio services and the signals for access authorization can be received or sent. Place these disc antennas represent a very high effort in terms of production and are not for everyone Vehicle types (e.g. convertibles) ready for use.
  • the invention is therefore based on the object of an antenna for a vehicle To send or receive signals that are necessary for a contactless Access authorization to the vehicle trained and beyond that simple and is inexpensive to implement.
  • the antenna cable of the antenna by a Opening a surface of the vehicle and for receiving signals is formed outside and inside the vehicle.
  • a cable as an antenna provides a particularly simple and effective implementation Receiving signals.
  • Such a cable can be easily manufactured and pre Lay everything in the vehicle interior and also outside the vehicle.
  • the arrangement of the antenna cable is both inside and outside of the Vehicle for access authorization of particular importance, since the operation a radio remote control both inside and outside the vehicle must be done reliably.
  • the Authorization to open the vehicle checked and at the same time given Authorization z. B. the central locking operated so that the doors of the vehicle let open. Then the driver is in the vehicle interior can corresponding authorization means (e.g. chip card) the same or different signals are received via the part of the antenna cable laid inside the vehicle, which contain the authorization to start the engine of the vehicle.
  • authorization means e.g. chip card
  • the antenna designed as a roof antenna has Devices for sending or receiving multiple radio services on the one or more supply lines are supplied with signals, in this case according to the invention it is provided that the only supply line or a further supply line as Antenna cable for receiving signals for access authorization to the Vehicle is trained.
  • This can be a roof antenna known per se for combine several radio services with another function in such a way that this Roof antenna for the function of the access authorization signals to be received (FZV, keyless go, keyless entry or the like) is added.
  • an additional one Means be provided.
  • Such an additional facility is for example around an electrically conductive area on the circuit board or on itself Plastic-formed antenna housing, this electrically conductive area is designed, for example, as a metallized surface of the antenna housing and is electrically connected to the antenna cable.
  • the antenna and its facilities for sending or receiving signals from the several radio services and the signals for access authorization with appropriate sending or receiving devices are connected via the supply lines.
  • Figure 1 shows the basic structure of the antenna for an access authorization system.
  • a section 1 of a vehicle (not shown further) is shown, this surface 1 being in particular a vehicle roof. Below the area 1 is thus z. B. a passenger interior is available.
  • This surface 1 has one Opening 2 through which an antenna cable 3 is guided.
  • the antenna cable 3 it is for example the stripped inner conductor of a coaxial cable 4, the end of the coaxial cable 4 facing away from the antenna cable 3 having a corresponding receiving / transmitting device of the access authorization system is connected so that the signals received via the antenna cable 3 Radio remote control can be processed further.
  • This further processing and the Components of the access authorization system are known per se.
  • FIG. 2 shows the application of the invention to an antenna 5, the roof antenna is trained.
  • the antenna 5 has a base body 6 made of metal, which in turn has a projection 7, which is not designated by the here Opening in area 1 is sufficient.
  • An antenna housing 8 is made from the base body 6 Plastic arranged, with the antenna housing 8 devices 9, 10 for Sending and receiving signals of the several radio services arranged protected are.
  • These radio services are, for example, as in the DE 295 00 961 describes radio reception (AM, FM), satellite navigation (GPS) as well as cellular services (such as AMPS, GSM, GSM 1800, UMTS and like).
  • the devices 9 and 10 (or more) are designed accordingly.
  • At least one Supply line 11 is present, in particular two or more of the same type or different supply lines 11, 12 are present. Via these feed lines 11, 12 depending on the signals to be transmitted and the radio services, for which the antenna 5 is designed, the signals between the devices 9 and 10 and transmitting or receiving devices, not shown.
  • the exemplary embodiment shown in FIG. 2 is now also the feed line 12 as an antenna cable trained, which is both in the vehicle interior and outside located.
  • the feed line 12 is not only for receiving / transmitting trained by signals for access authorization, but also trained for the power supply of the facilities of the antenna 5. This can, must but don't be like that.
  • the antenna cable according to the invention for receiving the Access authorization signals can also be a piece of cable, which is only trained for this.
  • One end of the lead 12, which is the antenna cable is through the opening to the outside, but inside the antenna housing 8 out and there for better reception properties with an electrically conductive Surface 13 connected, this surface 13 inside and / or outside of Antenna housing 8 may be present. It is important that the electrically conductive surface 13 is only a partial area of the antenna housing 8, in order to shield it prevent existing devices for sending or receiving signals.
  • the other end of the feed line 12 has a plug connection 14, via which the Supply line 12 is divided into the coaxial cable 4 and a power supply line 15. For decoupling the signals received via the antenna cable (supply line 12) a coupling capacitor 16 is also provided.
  • the coupling capacitor 16 is integrated in the connector 14. Is carried out via supply line 12 or the coaxial cable 4 no further transmission of other signals and also none Power supply, so the coupling capacitor 16 can be omitted. It is also conceivable that summarize described supply lines 11, 12 and 4 and 15 to form a cable harness.

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

The antenna (5) has a receiving arrangement in the form of an antenna structure or an antenna cable that is fed through an opening in a surface (1) of the vehicle and is designed to receive/transmit signal outside and inside the vehicle. A lead (12) can be in the form of an antenna cable for receiving signals for an access authorization arrangement for a vehicle.

Description

Die Erfindung betrifft eine Antenne für ein Fahrzeug zum Senden bzw. Empfangen von Signalen gemäß den Merkmalen des Oberbegriffes des Patentanspruchs 1.The invention relates to an antenna for a vehicle for transmitting or receiving Signals according to the features of the preamble of claim 1.

Aus der DE 295 00 961 ist eine Fahrzeugantennenanordnung mit einer Antenne bekannt, mit der verschiedene Funkdienste, wie z. B. Rundfunk, Mobilfunk und dergleichen übertragen werden können. Bei dieser Antennenanordnung sind Einrichtungen zum Senden bzw. Empfangen von Signalen innerhalb eines Antennengehäuses bzw. abstehend von dem Antennengehäuse (in Form einer Stabantenne) angeordnet. Dieses Gehäuse ist über einen Grundkörper auf dem Fahrzeugdach angeordnet, wobei das Fahrzeugdach eine Öffnung aufweist, durch welche Zuleitungen zu den Einrichtungen geführt sind. Unterhalb des Gehäuses ist eine Antennenelektronik angeordnet, über die die Signale verarbeitet werden. Eine Einrichtung zum Senden bzw. Empfangen von Signalen ist dabei nicht von außerhalb des Fahrzeugdaches in Richtung der Elektronik (in Richtung des Fahrzeuginnenraumes) geführt. Das Empfangen von Signalen für eine Zugangsberechtigung zum Fahrzeug (Funkzentralverriegelung (FZV) bzw. keyless entry genannt) ist in der DE 295 00 961 nicht beschrieben. Außerdem sind die hieraus bekannten Einrichtungen zum Senden bzw. Empfangen von Signalen nicht für die Signale für eine Zugangsberechtigung geeignet.A vehicle antenna arrangement with an antenna is known from DE 295 00 961, with the various radio services such. B. radio, mobile communications and the like can be transferred. In this antenna arrangement are devices for Sending or receiving signals within an antenna housing or spaced from the antenna housing (in the form of a rod antenna). This Housing is arranged on a base body on the vehicle roof, the Vehicle roof has an opening through which leads to the facilities are led. Antenna electronics are arranged below the housing, via which the signals are processed. A device for sending or receiving Signals are not from outside the vehicle roof towards the electronics (in Direction of the vehicle interior). Receiving signals for one Access authorization to the vehicle (radio central locking (FZV) or keyless entry is not described in DE 295 00 961. They're also from here known devices for sending or receiving signals not for the signals suitable for access authorization.

Für die Signale für eine Zugangsberechtigung, die berührungslos erfolgt, ist eine Antenne erforderlich und bekannt. So werden beispielsweise im Fahrzeuginnenraum Antennenkabel verlegt, bei denen es sich um ein Koaxialkabel handelt, bei dem ein Stück des Innenleiters freigelegt ist und als Antenne fungiert. Ein solches Kabel ist allerdings nur im Innenraum verlegt und gelangt nicht durch eine Öffnung in einer Fläche des Fahrzeuges. Hierbei sind von außen von einer Funkfernbedienung abgegebene Signale nur schlecht empfangbar, da die metallischen Teile des Fahrzeuges abschirmend wirken. Besonders schlecht ist der Empfang dann, wenn die Scheiben einen aufgedampften metallischen Überzug aufweisen.There is an antenna for the signals for an access authorization, which takes place without contact required and known. For example, antenna cables are used in the vehicle interior laid, which is a coaxial cable in which a piece of the Inner conductor is exposed and acts as an antenna. Such a cable is only in the The interior is not routed and does not pass through an opening in a surface of the vehicle. Signals from the outside by a radio remote control are only bad here receivable, since the metallic parts of the vehicle have a shielding effect. Especially Reception is poor when the panes have a vapor-deposited metallic coating Have coating.

Alternativ zu Kabeln, die als Antenne fungieren und im Fahrzeuginnenraum verlegt sind, sind sogenannte Scheibenantennen bekannt, bei denen über leitfähige Strukturen auf einer Fahrzeugscheibe die Signale der Funkdienste sowie die Signale für die Zugangsberechtigung empfangen bzw. gesendet werden können. Diese Scheibenantennen stellen einen sehr hohen Aufwand bezüglich der Herstellung dar und sind nicht für alle Fahrzeugtypen (beispielsweise Cabrios) einsatzfähig.As an alternative to cables that act as antennas and are installed in the vehicle interior, So-called disk antennas are known, which have conductive structures a vehicle window the signals of the radio services and the signals for access authorization can be received or sent. Place these disc antennas represent a very high effort in terms of production and are not for everyone Vehicle types (e.g. convertibles) ready for use.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Antenne für ein Fahrzeug zum Senden bzw. Empfangen von Signalen bereitzustellen, die für eine berührungslose Zugangsberechtigung zum Fahrzeug ausgebildet und die darüber hinaus einfach und kostengünstig zu realisieren ist.The invention is therefore based on the object of an antenna for a vehicle To send or receive signals that are necessary for a contactless Access authorization to the vehicle trained and beyond that simple and is inexpensive to implement.

Diese Aufgabe ist durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the features of patent claim 1.

Erfindungsgemäß ist vorgesehen, daß das Antennenkabel der Antenne durch eine Öffnung einer Fläche des Fahrzeuges geführt und zum Empfangen von Signalen außerhalb und innerhalb des Fahrzeuges ausgebildet ist. Die Verwendung eines Kabels als Antenne stellt eine besonders einfache und gleichzeitig wirksame Realisierung zum Empfangen von Signalen dar. Ein solches Kabel läßt sich problemlos herstellen und vor allen Dingen im Fahrzeuginnenraum und auch außerhalb des Fahrzeuges verlegen. Dabei ist die Anordnung des Antennenkabels sowohl innerhalb als auch außerhalb des Fahrzeuges für die Zugangsberechtigung von besonderer Wichtigkeit, da die Betätigung einer Funkfernbedienung sowohl innerhalb des Fahrzeuges als auch außerhalb zuverlässig erfolgen muß. Hier bietet das durch die Öffnung der Fläche des Fahrzeuges geführte Antennenkabel den wesentlichen Vorteil, daß die Bedienperson, die sich von außerhalb des Fahrzeuges nähert, zuverlässig die Zugangsberechtigung durch Betätigung der Funkfernbedienung aktivieren kann. Durch denjenigen Teil des Antennenkabels, welches außerhalb des Fahrzeuges angeordnet ist, können diese Signale problemlos empfangen werden. Mit den empfangenen Signalen wird einerseits die Berechtigung zum Öffnen des Fahrzeuges überprüft und gleichzeitig bei gegebener Berechtigung z. B. die Zentralverriegelung betätigt, so daß sich die Türen des Fahrzeuges öffnen lassen. Befindet sich dann der Fahrer im Fahrzeuginnenraum können über entsprechende Berechtigungsmittel (z. B. Chipkarte) die gleichen oder andere Signale über den im Fahrzeuginnenraum verlegten Teil des Antennenkabels empfangen werden, der die Berechtigung zum Starten des Motors des Fahrzeuges enthalten.According to the invention it is provided that the antenna cable of the antenna by a Opening a surface of the vehicle and for receiving signals is formed outside and inside the vehicle. The use of a cable as an antenna provides a particularly simple and effective implementation Receiving signals. Such a cable can be easily manufactured and pre Lay everything in the vehicle interior and also outside the vehicle. The arrangement of the antenna cable is both inside and outside of the Vehicle for access authorization of particular importance, since the operation a radio remote control both inside and outside the vehicle must be done reliably. Here it offers by opening the surface of the vehicle guided antenna cable the main advantage that the operator, who is from approaching outside the vehicle, the access authorization reliably Activation of the radio remote control can activate. Through that part of the antenna cable which is located outside the vehicle can use these signals can be received without any problems. With the received signals, on the one hand, the Authorization to open the vehicle checked and at the same time given Authorization z. B. the central locking operated so that the doors of the vehicle let open. Then the driver is in the vehicle interior can corresponding authorization means (e.g. chip card) the same or different signals are received via the part of the antenna cable laid inside the vehicle, which contain the authorization to start the engine of the vehicle.

In Weiterbildung der Erfindung weist die als Dachantenne ausgebildete Antenne Einrichtungen zum Senden bzw. zum Empfangen mehrerer Funkdienste auf, die über eine oder mehrere Zuleitungen mit Signalen versorgt werden, wobei hierbei erfindungsgemäß vorgesehen ist, daß die einzige Zuleitung auch bzw. eine weitere Zuleitung als Antennenkabel zum Empfangen von Signalen für die Zugangsberechtigung zum Fahrzeug ausgebildet ist. Damit läßt sich eine an sich schon bekannte Dachantenne für mehrere Funkdienste derart mit einer weiteren Funktion kombinieren, daß nämlich diese Dachantenne um die Funktion der zu empfangenden Signale der Zugangsberechtigung (FZV, keyless go, keyless entry oder dergleichen) ergänzt wird. Hierzu ist eben eine Zuleitung als Antennenkabel ausgebildet, so daß sich das Antennenkabel zum einen außerhalb und zum anderen innerhalb des Fahrzeuges befindet. Zum Empfangen der außerhalb des Fahrzeuges abgegebenen Signale für die Zugangsberechtigung kann entweder eine der Einrichtungen der Antenne mitbenutzt werden oder eine zusätzliche Einrichtung vorgesehen sein. Bei einer solchen zusätzlichen Einrichtung handelt es sich beispielsweise um einen elektrisch leitenden Bereich auf der Platine oder des an sich aus Kunststoff gebildeten Antennengehäuses, wobei dieser elektrisch leitende Bereich beispielsweise als metallisierte Oberfläche des Antennengehäuses ausgebildet ist und elektrisch mit dem Antennenkabel verbunden ist.In a further development of the invention, the antenna designed as a roof antenna has Devices for sending or receiving multiple radio services on the one or more supply lines are supplied with signals, in this case according to the invention it is provided that the only supply line or a further supply line as Antenna cable for receiving signals for access authorization to the Vehicle is trained. This can be a roof antenna known per se for combine several radio services with another function in such a way that this Roof antenna for the function of the access authorization signals to be received (FZV, keyless go, keyless entry or the like) is added. There is just one Lead formed as an antenna cable, so that the antenna cable on the one hand outside and on the other inside the vehicle. To receive the Signals for access authorization issued outside the vehicle can either one of the devices of the antenna can be used or an additional one Means be provided. Such an additional facility is for example around an electrically conductive area on the circuit board or on itself Plastic-formed antenna housing, this electrically conductive area is designed, for example, as a metallized surface of the antenna housing and is electrically connected to the antenna cable.

Der Vollständigkeit halber sei noch erwähnt, daß die Antenne bzw. deren Einrichtungen zum Senden bzw. Empfangen von Signalen der mehreren Funkdienste sowie der Signale für die Zugangsberechtigung mit entsprechenden Sende- bzw. Empfangseinrichtungen über die Zuleitungen verbunden sind.For the sake of completeness, it should also be mentioned that the antenna and its facilities for sending or receiving signals from the several radio services and the signals for access authorization with appropriate sending or receiving devices are connected via the supply lines.

Ausführungsbeispiele der Erfindung, auf die diese jedoch nicht beschränkt ist, sind im folgenden beschrieben und anhand der Figuren erläutert.Embodiments of the invention, to which this is not limited, are in following described and explained with reference to the figures.

Es zeigen:

Figur 1
Prinzipdarstellung der Erfindung,
Figur 2
eine gemäß der Erfindung ausgebildete Dachantenne.
Show it:
Figure 1
Schematic diagram of the invention,
Figure 2
a roof antenna designed according to the invention.

Figur 1 zeigt den prinzipiellen Aufbau der Antenne für ein Zugangsberechtigungssystem. Ausschnittsweise ist eine Fläche 1 eines nicht weiter dargestellten Fahrzeuges gezeigt, wobei es sich bei dieser Fläche 1 insbesondere um ein Fahrzeugdach handelt. Unterhalb der Fläche 1 ist somit z. B. ein Fahrgastinnenraum vorhanden. Diese Fläche 1 weist eine Öffnung 2 auf, durch die ein Antennenkabel 3 geführt ist. Bei dem Antennenkabel 3 handelt es sich beispielsweise um den abisolierten Innenleiter eines Koaxialkabels 4, wobei das dem Antennenkabel 3 abgewandte Ende des Koaxialkabels 4 mit einer entsprechenden Empfangs-/Sendeeinrichtung des Zugangsberechtigungssystemes verbunden ist, so daß die über das Antennenkabel 3 empfangenen Signale einer Funkfernbedienung weiterverarbeitet werden können. Diese Weiterverarbeitung und die Bestandteile des Zugangsberechtigungssystemes sind an sich bekannt. Wesentlich bei dieser prinzipiellen Darstellung gemäß Figur 1 ist, daß das Antennenkabel 3 durch die Öffnung 2 geführt ist, so daß der eine Teil des Antennenkabels 3 außerhalb und der andere Teil innerhalb des Fahrzeuges angeordnet ist (verlegt werden kann), so daß die Signale der Funkfernbedienung zuverlässig empfangen werden, unabhängig davon, ob sie innerhalb des Fahrgastraumes oder von außerhalb des Fahrzeuges abgegeben werden.Figure 1 shows the basic structure of the antenna for an access authorization system. A section 1 of a vehicle (not shown further) is shown, this surface 1 being in particular a vehicle roof. Below the area 1 is thus z. B. a passenger interior is available. This surface 1 has one Opening 2 through which an antenna cable 3 is guided. With the antenna cable 3 it is for example the stripped inner conductor of a coaxial cable 4, the end of the coaxial cable 4 facing away from the antenna cable 3 having a corresponding receiving / transmitting device of the access authorization system is connected so that the signals received via the antenna cable 3 Radio remote control can be processed further. This further processing and the Components of the access authorization system are known per se. Essential to This basic illustration according to Figure 1 is that the antenna cable 3 through the Opening 2 is guided so that one part of the antenna cable 3 outside and the other part is arranged inside the vehicle (can be relocated) so that the Radio remote control signals are reliably received, regardless of whether they are delivered inside the passenger compartment or from outside the vehicle become.

Figur 2 zeigt die Anwendung der Erfindung bei einer Antenne 5, die als Dachantenne ausgebildet ist. Die Antenne 5 weist einen aus Metall bestehenden Grundkörper 6 auf, der seinerseits einen Vorsprung 7 aufweist, der durch die hier nicht näher bezeichnete Öffnung in der Fläche 1 reicht. Über dem Grundkörper 6 ist ein Antennengehäuse 8 aus Kunststoff angeordnet, wobei mit dem Antennengehäuse 8 Einrichtungen 9, 10 zum Senden bzw. Empfangen von Signalen der mehreren Funkdienste geschützt angeordnet sind. Bei diesen Funkdiensten handelt es sich beispielsweise, wie schon in der DE 295 00 961 beschrieben, um Radioempfang (AM, FM), Satellitennavigation (GPS) sowie Mobilfunkdienste (wie beispielsweise AMPS, GSM, GSM 1800, UMTS und dergleichen). Für die genannten Funkdienste bzw. ähnliche oder alternative Funkdienste sind die Einrichtungen 9 und 10 (oder mehrere) entsprechend ausgebildet. Zum Senden von Signalen bzw. zur Weiterleitung von empfangenen Signalen ist mindestens eine Zuleitung 11 vorhanden, insbesondere sind zwei oder mehrere gleichartige oder voneinander verschiedene Zuleitungen 11, 12 vorhanden. Über diese Zuleitungen 11, 12 werden in Abhängigkeit der zu übertragenden Signale und in Abhängigkeit der Funkdienste, für die die Antenne 5 jeweilig ausgebildet ist, die Signale zwischen den Einrichtungen 9 und 10 sowie nicht gezeigten Sende- bzw. Empfangseinrichtungen übertragen. Bei dem in Figur 2 dargestellten Ausführungsbeispiel ist nun die Zuleitung 12 auch als Antennenkabel ausgebildet, welche sich sowohl im Fahrzeuginnenraum als auch außerhalb befindet. Bei diesem Ausführungsbeispiel ist die Zuleitung 12 nicht nur zum Empfangen/Senden von Signalen für die Zugangsberechtigung ausgebildet, sondern ebenfalls ausgebildet für die Stromversorgung der Einrichtungen der Antenne 5. Dies kann, muß aber nicht so sein. Bei dem erfindungsgemäßen Antennenkabel zum Empfang der Signale für die Zugangsberechtigung kann es sich auch um ein Stück Kabel handeln, welches nur hierfür ausgebildet ist. Das eine Ende der Zuleitung 12, die das Antennenkabel beinhaltet, ist durch die Öffnung nach außen, aber innerhalb des Antennengehäuses 8 geführt und dort zwecks besserer Empfangseigenschaften mit einer elektrisch leitenden Fläche 13 verbunden, wobei diese Oberfläche 13 innerhalb und/oder außerhalb des Antennengehäuses 8 vorhanden sein kann. Wichtig ist, daß die elektrisch leitende Fläche 13 nur eine Teilfläche des Antennengehäuses 8 ist, um eine Abschirmung der darin befindlichen Einrichtungen zum Senden bzw. Empfangen von Signalen zu verhindern. Das andere Ende der Zuleitung 12 weist eine Steckverbindung 14 auf, über die die Zuleitung 12 aufgeteilt wird in das Koaxialkabel 4 sowie eine Stromversorgungszuleitung 15. Zur Auskopplung der über das Antennenkabel (Zuleitung 12) empfangenen Signale ist noch ein Koppelkondensator 16 vorgesehen. Hierbei ist denkbar, daß der Koppelkondensator 16 in der Steckverbindung 14 integriert ist. Erfolgt über die Zuleitung 12 bzw. das Koaxialkabel 4 keine weitere Übertragung sonstiger Signale und auch keine Stromversorgung, so kann der Koppelkondensator 16 entfallen. Denkbar ist auch, die beschriebenen Zuleitungen 11, 12 sowie 4 und 15 zu einem Kabelstrang zusammenzufassen.Figure 2 shows the application of the invention to an antenna 5, the roof antenna is trained. The antenna 5 has a base body 6 made of metal, which in turn has a projection 7, which is not designated by the here Opening in area 1 is sufficient. An antenna housing 8 is made from the base body 6 Plastic arranged, with the antenna housing 8 devices 9, 10 for Sending and receiving signals of the several radio services arranged protected are. These radio services are, for example, as in the DE 295 00 961 describes radio reception (AM, FM), satellite navigation (GPS) as well as cellular services (such as AMPS, GSM, GSM 1800, UMTS and like). For the radio services mentioned or similar or alternative radio services the devices 9 and 10 (or more) are designed accordingly. To send of signals or for forwarding received signals is at least one Supply line 11 is present, in particular two or more of the same type or different supply lines 11, 12 are present. Via these feed lines 11, 12 depending on the signals to be transmitted and the radio services, for which the antenna 5 is designed, the signals between the devices 9 and 10 and transmitting or receiving devices, not shown. In which The exemplary embodiment shown in FIG. 2 is now also the feed line 12 as an antenna cable trained, which is both in the vehicle interior and outside located. In this exemplary embodiment, the feed line 12 is not only for receiving / transmitting trained by signals for access authorization, but also trained for the power supply of the facilities of the antenna 5. This can, must but don't be like that. In the antenna cable according to the invention for receiving the Access authorization signals can also be a piece of cable, which is only trained for this. One end of the lead 12, which is the antenna cable is through the opening to the outside, but inside the antenna housing 8 out and there for better reception properties with an electrically conductive Surface 13 connected, this surface 13 inside and / or outside of Antenna housing 8 may be present. It is important that the electrically conductive surface 13 is only a partial area of the antenna housing 8, in order to shield it prevent existing devices for sending or receiving signals. The other end of the feed line 12 has a plug connection 14, via which the Supply line 12 is divided into the coaxial cable 4 and a power supply line 15. For decoupling the signals received via the antenna cable (supply line 12) a coupling capacitor 16 is also provided. It is conceivable that the coupling capacitor 16 is integrated in the connector 14. Is carried out via supply line 12 or the coaxial cable 4 no further transmission of other signals and also none Power supply, so the coupling capacitor 16 can be omitted. It is also conceivable that summarize described supply lines 11, 12 and 4 and 15 to form a cable harness.

Claims (8)

Antenne (5) für ein Fahrzeug zum Senden bzw. Empfangen von Signalen mit Empfangsmitteln, dadurch gekennzeichnet, daß die Empfangsmittel als Antennenstruktur oder als Antennenkabel (3, 12) ausgebildet sind und durch eine Öffnung (2) einer Fläche (1) des Fahrzeuges geführt und zum Empfangen/Senden von Signalen außerhalb und innerhalb des Fahrzeuges ausgebildet ist.Antenna (5) for a vehicle for transmitting or receiving signals with receiving means, characterized in that the receiving means are designed as an antenna structure or as an antenna cable (3, 12) and are guided through an opening (2) in a surface (1) of the vehicle and is designed to receive / transmit signals outside and inside the vehicle. Antenne (5) nach Anspruch 1 mit Einrichtungen (9, 10) zum Senden bzw. Empfangen von Signalen mehrerer Funkdienste, wobei die Antenne auf der Fläche (1) des Fahrzeuges angeordnet ist und zumindest eine Zuleitung (11) zu den Einrichtungen (9, 10) aufweist, dadurch gekennzeichnet, daß eine Zuleitung (12) als Antennenkabel (3) zum Empfangen von Signalen für eine Zugangsberechtigung zum Fahrzeug ausgebildet ist.Antenna (5) according to Claim 1 with devices (9, 10) for transmitting or receiving signals from a plurality of radio services, the antenna being arranged on the surface (1) of the vehicle and at least one feed line (11) to the devices (9, 10), characterized in that a feed line (12) is designed as an antenna cable (3) for receiving signals for an access authorization to the vehicle. Antenne (5) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Antennenkabel (3, 12) bis in ein Antennengehäuse (8) der Antenne (5) geführt ist.Antenna (5) according to claim 1 or 2, characterized in that the antenna cable (3, 12) is led into an antenna housing (8) of the antenna (5). Antenne (5) nach Anspruch 3, dadurch gekennzeichnet, daß das Antennengehäuse (8) oder die Platine (9) eine elektrisch leitende Fläche (13) aufweist, die mit dem Antennenkabel (3, 12) verbunden ist.Antenna (5) according to claim 3, characterized in that the antenna housing (8) or the circuit board (9) has an electrically conductive surface (13) which is connected to the antenna cable (3, 12). Antenne (5) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die zumindest eine Zuleitung (11, 12) einschließlich des Antennenkabels (3, 12) über eine Steckverbindung (14) und gegebenenfalls weitere Zuleitungen mit einer Sende- bzw. Empfangseinrichtung verbunden sind. Antenna (5) according to claim 1 or 2, characterized in that the at least one supply line (11, 12) including the antenna cable (3, 12) are connected to a transmitting or receiving device via a plug connection (14) and optionally further supply lines , Antenne (5) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Antennenkabel (3, 12) auch zur Stromversorgung für die Einrichtungen (9, 10) der Antenne (5) ausgebildet ist.Antenna (5) according to one of Claims 1 to 5, characterized in that the antenna cable (3, 12) is also designed to supply power to the devices (9, 10) of the antenna (5). Antenne (5) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Auskopplung der über das Antennenkabel (3, 12) empfangenen Signale kapazitiv erfolgt.Antenna (5) according to one of the preceding claims, characterized in that the signals received via the antenna cable (3, 12) are coupled out capacitively. Antenne (5) nach Anspruch 7, dadurch gekennzeichnet, daß ein zur Auskopplung vorgesehener Koppelkondensator (16) in der Steckverbindung (14) integriert ist.Antenna (5) according to claim 7, characterized in that a coupling capacitor (16) provided for coupling out is integrated in the plug connection (14).
EP04001649A 2003-02-12 2004-01-27 Antenna for a radio central locking system Withdrawn EP1447878A1 (en)

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DE10305722 2003-02-12

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