EP1454381A1 - Wide band slot cavity antenna - Google Patents

Wide band slot cavity antenna

Info

Publication number
EP1454381A1
EP1454381A1 EP02792761A EP02792761A EP1454381A1 EP 1454381 A1 EP1454381 A1 EP 1454381A1 EP 02792761 A EP02792761 A EP 02792761A EP 02792761 A EP02792761 A EP 02792761A EP 1454381 A1 EP1454381 A1 EP 1454381A1
Authority
EP
European Patent Office
Prior art keywords
antenna
slot
areas
circuit board
area
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.)
Granted
Application number
EP02792761A
Other languages
German (de)
French (fr)
Other versions
EP1454381B1 (en
Inventor
Markus Pfletschinger
Martin Kuhn
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 Electronics GmbH and Co KG
Hirschmann Electronics 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 EP1454381A1 publication Critical patent/EP1454381A1/en
Application granted granted Critical
Publication of EP1454381B1 publication Critical patent/EP1454381B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
    • 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

Definitions

  • the invention relates to an antenna, in particular a vehicle antenna for mobile radio, according to the features of the preamble of patent claim 1.
  • An antenna preferably a vehicle antenna for mobile radio
  • a vehicle antenna for mobile radio is known from DE 199 22 699 A1.
  • vertical radiators are provided as radiation means, which are arranged on a ground surface and are connected to one another via an impedance transformation line. Because of the coordination (in particular length) of the vertical radiators and the impedance transformation line for the intended frequency range, in particular in the mobile radio range from 0.8 to 2.2 GHz, this known antenna has predetermined length and height dimensions. Since this antenna is integrated below a rear window of a vehicle, it requires a large installation space due to its geometric dimensions, which is either not available or is undesirably reduced by the interior of the vehicle.
  • a further disadvantage is that a coaxial cable for signal transmission is soldered directly to the ground surface, the inner conductor of the coaxial cable being connected to the impedance transformation line. This creates a complex structure, which has the particular disadvantage that prior to the installation of the antenna, this has a cable tail, which causes problems in handling the prefabricated antennas before they are installed.
  • the invention is therefore based on the object of providing an antenna, in particular a vehicle antenna for mobile radio, with which the disadvantages described at the outset are avoided.
  • a radiation region that is open on both sides and has a longitudinally slit is excited as a radiation medium in several frequency ranges. Because of this, it is possible for the antenna to be more compact with the same properties, in particular to be significantly shorter (approximately by half) and flatter. This means that the available space under the rear window or on the roof flange of the vehicle can be used much better and more economically.
  • the length of the antenna corresponds to approximately one third of the wavelength of the lowest frequency.
  • the longitudinally slotted conductive area has a double bend in a partial area.
  • the double-kinked slot for example with the shape of a funnel, ensures great broadband capability and thus makes the spotlight robust against installation tolerances.
  • the longitudinally slotted conductive regions together form a tapering slit. This provides a flat vertical radiator for the required frequency range (s) in a simple manner.
  • the tapered slot emanates a further slot which branches off, in particular approximately in the middle, and which separates the longitudinally slotted conductive regions from one another.
  • the impedance of the antenna can be adapted in wide or additional areas. For optimum impedance matching and also for optimal use of area, the leg of the angled slot starting from the tapering slot is shorter than the adjoining slot area.
  • the areas in the direction in which no radiation is to take place are shielded by a housing body, in particular a sheet metal.
  • This metal housing body prevents radiation from entering the interior of the vehicle.
  • the body which extends at least over the area of the circuit board, but can also be larger or smaller, at least a substantial reduction in radiation into the interior of the vehicle is realized.
  • the longitudinally slotted conductive areas are arranged as a copper surface on a circuit board.
  • by methods known per se e.g. etching processes
  • the branching slot is designed such that no direct current short circuit occurs at the base of the antenna. Because of this, the antenna can be checked electrically for functionality or for existing faults before it is installed. By avoiding the DC short circuit, only a simple test resistor has to be connected in parallel at the feed point. The coupling capacitor required for conventional slot radiators can be omitted. This simplifies construction and lowers costs.
  • a contact partner in particular a plug, is arranged in the base of the antenna on the circuit board.
  • the contact partner can already be provided on the circuit board when the antenna is manufactured, without a cable being required at this time.
  • a cable can be temporarily connected via the contact partner. After the test, the cable can be removed again, so that the transport and storage of the antenna is simplified until it is finally installed.
  • Corresponding cabling only takes place with or after the antenna is installed in the vehicle.
  • FIG. 1 a three-dimensional view of a prefabricated antenna
  • FIG. 2 shows a sectional view of an antenna according to FIG. 1 at its installation location.
  • FIG. 1 shows an antenna 1 for receiving and transmitting high-frequency signals, in particular in the mobile radio areas AMPS, GSM 900/18000, PCS, UMTS and the like.
  • the antenna 1 shown is in particular a vehicle antenna, although other fields of application, including static uses, are also conceivable.
  • the antenna 1 has a metal housing body, which consists of a multi-angled plate 2.
  • a metal housing body which consists of a multi-angled plate 2.
  • Such an angled plate 2 is inexpensive on the one hand in terms of material costs, and on the other hand it is quick and easy to manufacture. This has a positive effect on the manufacture of the antenna 1 according to the invention.
  • the board 3 has a base made of a non-conductive material in a manner known per se.
  • a plurality of conductive regions 4 to 6 are arranged on this base area of the circuit board 3, which are produced, for example, by covering the later conductive regions 4 to 6 and etching away the uncovered intermediate regions.
  • first slot 7 which is created on the one hand by the shape of the area 4 and on the other hand by the shape of the areas 5 and 6.
  • second slot 8 which in turn separates the two areas 5 and 6 from one another. If the second slot 8 is omitted, the two areas 5 and 6 form a continuous area, the second slot 8 extends approximately from the center of the first slot 7 and initially extends at right angles from this over a short distance, while the longer part of the second slot 8 is approximately parallel to the first slot 7.
  • the conductive area 5 is provided with a double bend 9.
  • a contact partner in particular a plug 11, to which a coaxial cable for feeding the antenna 1 can be inserted.
  • the legs of the plate 2 which are spaced apart parallel to one another, have a plurality of punching and bending regions 12, by means of which the circuit board 3 is fixed to the housing basic body.
  • punch-bending areas 12 have the advantage; that they are easy to manufacture and thus the board 3 can be quickly fixed to the housing body 2.
  • FIG. 2 shows the antenna 1 shown in FIG. 1 in a three-dimensional view in section at its installation location.
  • the rear window 14 connects, which is fastened to the roof flange 13 by means of an adhesive (bead of adhesive 15).
  • an adhesive bead of adhesive 15
  • the installation location of the antenna .1 which can be kept particularly flat due to the inventive design of the antenna 1.
  • the antenna in particular the vehicle antenna for mobile radio, is thus designed in summary as a radiating open cavity resonator with a specially designed broadband slot in order to achieve the most compact, in particular flat and short, construction possible.

Abstract

The present invention relates to an antenna ( 1 ), especially a vehicle mounted antenna for use in mobile telephony. In order to achieve a compact, especially flat and short construction for the antenna, as configured, a radiating open hollow cavity resonator with a specially designated set of wide band slots ( 7,8 ) is arranged on a nonconductive board with multiple conductive areas ( 4, 5 , and 6 ) situated about the slots ( 7,8 ).

Description

B E S C H R E I B U N G DESCRIPTION
HOHLRAUMRESONATORANTENNE MIT BREITBANDSCHLITZ H OHLRAUMRESONATORANTENNE broadband SLOT
Die Erfindung betrifft eine Antenne, insbesondere eine Fahrzeugantenne für Mobilfunk, gemäß den Merkmalen des Oberbegriffes des Patenanspruches 1.The invention relates to an antenna, in particular a vehicle antenna for mobile radio, according to the features of the preamble of patent claim 1.
Aus der DE 199 22 699 A1 ist eine Antenne, vorzugsweise eine Fahrzeugsantenne für Mobilfunk, bekannt. Bei dieser Antenne sind als Strahlungsmittel Vertikalstrahler vorhanden, die auf einer Massefläche angeordnet und über eine Impedanztransformationsleitung miteinander verbunden sind. Aufgrund der Abstimmung (insbesondere Länge) der Vertikalstrahler und der Impedanztransformationsleitung für den vorgesehenen Frequenzbereich, insbesondere in dem Mobilfunkbereich von 0,8 bis 2,2 GHz, weist diese bekannte Antenne vorgegebene Längs- und Höhenmaße auf. Da diese Antenne unterhalb einer Heckscheibe eines Fahrzeuges integriert wird, benötigt sie aufgrund ihrer geometrischen Abmessung einen großen Bauraum, der entweder nicht zur Verfügung steht oder durch den Innenraum des Fahrzeuges in unerwünschter Weise verkleinert wird. Ein weiterer Nachteil besteht darin, daß ein Koaxialkabel zur Signalübertrag direkt an der Massefläche angelötet ist, wobei der In- nenleiter des Koaxialkabels mit der Impedanztransformationsleitung verbunden wird. Dadurch entsteht ein aufwendiger Aufbau, der insbesondere den Nachteil hat, daß vor dem Einbau der Antenne diese einen Kabelschwanz aufweist, der Probleme beim Handling der vorgefertigten Antennen vor deren Einbau bereitet.An antenna, preferably a vehicle antenna for mobile radio, is known from DE 199 22 699 A1. In this antenna, vertical radiators are provided as radiation means, which are arranged on a ground surface and are connected to one another via an impedance transformation line. Because of the coordination (in particular length) of the vertical radiators and the impedance transformation line for the intended frequency range, in particular in the mobile radio range from 0.8 to 2.2 GHz, this known antenna has predetermined length and height dimensions. Since this antenna is integrated below a rear window of a vehicle, it requires a large installation space due to its geometric dimensions, which is either not available or is undesirably reduced by the interior of the vehicle. A further disadvantage is that a coaxial cable for signal transmission is soldered directly to the ground surface, the inner conductor of the coaxial cable being connected to the impedance transformation line. This creates a complex structure, which has the particular disadvantage that prior to the installation of the antenna, this has a cable tail, which causes problems in handling the prefabricated antennas before they are installed.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Antenne, insbesondere eine Fahrzeugantenne für Mobilfunk, bereitzustellen, mit der die eingangs geschilderten Nachteile vermieden werden.The invention is therefore based on the object of providing an antenna, in particular a vehicle antenna for mobile radio, with which the disadvantages described at the outset are avoided.
Diese Aufgabe ist durch die Merkmale des Patentanspruches 1 gelöst. Bei der erfindungsgemäßen Antenne wird als Strahlungsmittel ein beidseitig offener und längsgeschlitzter leitfähiger Bereich in mehreren Frequenzbereichen zum Strahlen angeregt. Aufgrund dessen ist es möglich, daß die Antenne bei gleichen Ei- genschaften kompakter baut, insbesondere wesentlicher kürzer (etwa um die Hälfte) und flacher ist. Damit kann der unter der Heckscheibe bzw. am Dachflansch des Fahrzeuges vorhandene Bauraum wesentlich besser und sparsamer ausgenutzt werden. Je nach Größe des Frequenzbereiches bzw. in Abhängigkeit der zu sendenden oder zu empfangenden Frequenzen entspricht die Länge der Antenne in et- wa einem Drittel der Wellenlänge der tiefsten Frequenz.This object is solved by the features of claim 1. In the antenna according to the invention, a radiation region that is open on both sides and has a longitudinally slit is excited as a radiation medium in several frequency ranges. Because of this, it is possible for the antenna to be more compact with the same properties, in particular to be significantly shorter (approximately by half) and flatter. This means that the available space under the rear window or on the roof flange of the vehicle can be used much better and more economically. Depending on the size of the frequency range or depending on the frequencies to be transmitted or received, the length of the antenna corresponds to approximately one third of the wavelength of the lowest frequency.
In Weiterbildung der Erfindung weist der längsgeschlitzte leitfähige Bereich in einem Teilbereich einen Doppelknick auf. Der beispielsweise etwa Trichterform aufweisende doppelt geknickte Schlitz gewährleistet eine große Breitbandigkeit und macht da- mit den Strahler robust gegenüber Einbautoleranzen.In a development of the invention, the longitudinally slotted conductive area has a double bend in a partial area. The double-kinked slot, for example with the shape of a funnel, ensures great broadband capability and thus makes the spotlight robust against installation tolerances.
In Weiterbildung der Erfindung bilden die längsgeschlitzen leitfähigen Bereiche zusammen einen spitz zulaufenden Schlitz. Damit wird auf einfache Art und Weise ein flachbauender Vertikalstrahler für den oder die erforderlichen Frequenzbereich(e) zur Verfügung gestellt.In a further development of the invention, the longitudinally slotted conductive regions together form a tapering slit. This provides a flat vertical radiator for the required frequency range (s) in a simple manner.
In Weiterbildung der Erfindung geht von dem spitz zulaufenden Schlitz ein weiterer, insbesondere etwa in der Mitte, abzweigender Schlitz aus, der die längsgeschlitzen leitfähigen Bereiche voneinander trennt. Je nach Ausführung, insbesondere Breite und Länge des abgewinkelten Schlitzes, kann die Impedanz der Antenne in weiten oder auch zusätzlichen Bereichen angepaßt werden. Zur optimalen Impedanzanpassung und auch zur optimalen Flächenausnutzung ist dabei der von dem spitz zulaufenden Schlitz ausgehende Schenkel des abgewinkelten Schlitzes kürzer als der sich daran anschließende Schlitzbereich.In a further development of the invention, the tapered slot emanates a further slot which branches off, in particular approximately in the middle, and which separates the longitudinally slotted conductive regions from one another. Depending on the design, in particular the width and length of the angled slot, the impedance of the antenna can be adapted in wide or additional areas. For optimum impedance matching and also for optimal use of area, the leg of the angled slot starting from the tapering slot is shorter than the adjoining slot area.
In Weiterbildung der Erfindung sind die Bereiche in die Richtung, in die keine Einstrahlung stattfinden soll, durch einen Gehäusekörper, insbesondere ein Blech, abgeschirmt. Durch diesen Gehäusekörper aus Metall wird verhindert, daß eine Einstrahlung in den Innenraum des Fahrzeuges erfolgt. Je nach Abmessung des Ge- häusekörpers, der sich zumindest über den Bereich der Platine erstreckt, aber auch größer oder kleiner sein kann, wird zumindest eine wesentliche Reduzierung der Einstrahlung in den Innenraum des Fahrzeuges realisiert.In a development of the invention, the areas in the direction in which no radiation is to take place are shielded by a housing body, in particular a sheet metal. This metal housing body prevents radiation from entering the interior of the vehicle. Depending on the dimensions of the body, which extends at least over the area of the circuit board, but can also be larger or smaller, at least a substantial reduction in radiation into the interior of the vehicle is realized.
In Weiterbildung der Erfindung sind die längsgeschlitzten leitfähigen Bereiche als Kupferfläche auf einer Platine angeordnet. Dadurch steht zum einen ein preisgünstiges Material zur Verfügung, um die Vertikalstrahler der Antenne zu fertigen. Andererseits ist es durch an sich bekannte Verfahren (z.B. Ätzverfahren) möglich, die Bereiche aus Kupfer auf der Platine zu belassen, während der wenigstens eine Schlitz, insbesondere beide Schlitze, durch Wegätzen der entsprechenden Kupferbereiche hergestellt werden können. Aufgrund dieses Verfahrens ist es möglich, die Form der Bereiche, ebenso wie die Form der Schlitze, in weiten, erforderlichen Flächengebungen zu beeinflussen.In a further development of the invention, the longitudinally slotted conductive areas are arranged as a copper surface on a circuit board. On the one hand, this means that an inexpensive material is available to manufacture the antenna's vertical radiators. On the other hand, by methods known per se (e.g. etching processes) it is possible to leave the areas of copper on the circuit board, while the at least one slot, in particular both slots, can be produced by etching away the corresponding copper areas. This method makes it possible to influence the shape of the areas, as well as the shape of the slits, in wide, required areas.
In Weiterbildung der Erfindung ist der abzweigende Schlitz so ausgeführt, daß kein Gleichstromkurzschluß am Fußpunkt der Antenne auftritt. Aufgrund dessen kann die Antenne vor ihrem Einbau elektrisch auf ihre Funktionstüchtigkeit oder auf vorhandene Fehler geprüft werden. Durch die Vermeidung des Gleichstromkurzschlusses muss nur ein einfacher Prüfwiderstand im Speisepunkt parallel geschaltet werden. Der für konventionelle Schlitzstrahler notwendige Koppelkondensator kann entfallen. Dies vereinfacht den Aufbau und senkt die Kosten.In a further development of the invention, the branching slot is designed such that no direct current short circuit occurs at the base of the antenna. Because of this, the antenna can be checked electrically for functionality or for existing faults before it is installed. By avoiding the DC short circuit, only a simple test resistor has to be connected in parallel at the feed point. The coupling capacitor required for conventional slot radiators can be omitted. This simplifies construction and lowers costs.
In Weiterbildung der Erfindung ist in dem Fußpunkt der Antenne auf der Platine ein Kontaktpartner, insbesondere ein Stecker angeordnet. Dadurch kann mit Herstellung der Antenne der Kontaktpartner schon auf der Platine vorgesehen werden, ohne daß zu diesem Zeitpunkt ein Kabel erforderlich ist. Zum Test der Antenne kann ein solches Kabel über den Kontaktpartner vorübergehend angeschlossen werden. Nach Testablauf kann das Kabel wieder entfernt werden, so daß der Transport und die Lagerung der Antenne bis zu ihrem endgültigen Einbau vereinfacht ist. Erst mit oder nach Einbau der Antenne in das Fahrzeug findet da eine entsprechende Verkabelung statt. Ein Ausführungsbeispiel einer Antenne und deren Einbau ist im Folgenden beschrieben und anhand der Figuren erläutert. Dabei ist die Erfindung jedoch nicht auf die gezeigten Ausführungsbeispiele beschränkt.In a further development of the invention, a contact partner, in particular a plug, is arranged in the base of the antenna on the circuit board. As a result, the contact partner can already be provided on the circuit board when the antenna is manufactured, without a cable being required at this time. To test the antenna, such a cable can be temporarily connected via the contact partner. After the test, the cable can be removed again, so that the transport and storage of the antenna is simplified until it is finally installed. Corresponding cabling only takes place with or after the antenna is installed in the vehicle. An embodiment of an antenna and its installation is described below and explained with reference to the figures. However, the invention is not restricted to the exemplary embodiments shown.
Es zeigen:Show it:
Figur 1 : eine dreidimensionale Ansicht einer vorgefertigten Antenne,FIG. 1: a three-dimensional view of a prefabricated antenna,
Figur 2: eine Schnittansicht einer Antenne gemäß Figur 1 an ihrem Einbauort.2 shows a sectional view of an antenna according to FIG. 1 at its installation location.
Figur 1 zeigt eine Antenne 1 zum Empfangen und Senden von Hochfrequenzsignalen, insbesondere in den Mobilfunkbereichen AMPS, GSM 900/18000, PCS, UMTS und dergleichen. Bei der gezeigten Antenne 1 handelt es sich insbesondere um eine Fahrzeugantenne, wobei auch andere Anwendungsgebiete, auch statische Einsätze, denkbar sind.FIG. 1 shows an antenna 1 for receiving and transmitting high-frequency signals, in particular in the mobile radio areas AMPS, GSM 900/18000, PCS, UMTS and the like. The antenna 1 shown is in particular a vehicle antenna, although other fields of application, including static uses, are also conceivable.
Die Antenne 1 weist einen metallenen Gehäusekörper auf, der aus einem mehrfach abgewinkelten Blech 2 besteht. Ein solches abgewinkeltes Blech 2 ist einerseits hinsichtlich der Materialkosten günstig, andererseits ist es schnell und einfach zu ferti- gen. Dies beeinflußt im positiven Sinne die Herstellung der erfindungsgemäßen Antenne 1. Durch die entsprechende Abwinkelung des Bleches 2 sind zwei parallele und beabstandete Schenkel entstanden, zwischen denen eine Platine 3 angeordnet ist. Die Platine 3 hat in an sich bekannter Weise eine aus einem nicht leitenden Material bestehende Grundfläche. Auf dieser Grundfläche der Platine 3 sind mehrere leitfähige Bereiche 4 bis 6 angeordnet, die beispielsweise dadurch hergestellt werden, daß die späteren leitfähigen Bereiche 4 bis 6 abgedeckt werden und die nicht abgedeckten Zwischenbereiche weggeätzt werden. Diese wegzuätzenden Bereiche bilden anschließend zumindest einen ersten Schlitz 7, der einerseits durch die Formgebung des Bereiches 4 und andererseits durch die Formgebung der Bereiche 5 und 6 entsteht. Weiterhin ist ausgehend von dem ersten Schlitz 7 zur Anpassung der Impedanz der Antenne 1 ein zweiter Schlitz 8 vorhanden, der wiederum die beiden Bereiche 5 und 6 voneinander trennt. Entfällt der zweite Schlitz 8, bilden die beiden Bereiche 5 und 6 einen durchgehenden Bereich, der zweite Schlitz 8 geht etwa von der Mitte des ersten Schlitzes 7 aus und erstreckt sich zunächst rechtwinklig von diesem über ein kurzes Stück, während sich der längere Teil des zweiten Schlitzes 8 in etwa parallel zu dem ersten Schlitz 7 befindet.The antenna 1 has a metal housing body, which consists of a multi-angled plate 2. Such an angled plate 2 is inexpensive on the one hand in terms of material costs, and on the other hand it is quick and easy to manufacture. This has a positive effect on the manufacture of the antenna 1 according to the invention. between which a circuit board 3 is arranged. The board 3 has a base made of a non-conductive material in a manner known per se. A plurality of conductive regions 4 to 6 are arranged on this base area of the circuit board 3, which are produced, for example, by covering the later conductive regions 4 to 6 and etching away the uncovered intermediate regions. These areas to be etched away then form at least one first slot 7, which is created on the one hand by the shape of the area 4 and on the other hand by the shape of the areas 5 and 6. Furthermore, starting from the first slot 7 for adapting the impedance of the antenna 1, there is a second slot 8, which in turn separates the two areas 5 and 6 from one another. If the second slot 8 is omitted, the two areas 5 and 6 form a continuous area, the second slot 8 extends approximately from the center of the first slot 7 and initially extends at right angles from this over a short distance, while the longer part of the second slot 8 is approximately parallel to the first slot 7.
Bei der in der Figur 1 gezeigten Ausführungsform der Antenne 1 ist der leitfähige Be- reich 5 mit einem Doppelknick 9 versehen. An einem Fußpunkt 10 der Antenne 1 befindet sich ein Kontaktpartner, insbesondere ein Stecker 11 , an welchem ein Koaxialkabel zur Speisung der Antenne 1 einsteckbar ist. Um die Platine 3 an dem Gehäusekörper, insbesondere dem abgewinkelten Blech 2, befestigen können, weisen die parallel zu einander beabstandeten Schenkel des Bleches 2 mehrere Stanz- Bie- gebereiche 12 auf, über die die Platine 3 an dem Gehäusegrundkörper festgelegt wird. Solche Stanz-Biegebreiche 12 haben den Vorteil; daß sie einfach herzustellen sind und damit die Platine 3 schnell an dem Gehäusekörper 2 festgelegt werden kann.In the embodiment of the antenna 1 shown in FIG. 1, the conductive area 5 is provided with a double bend 9. At a base 10 of the antenna 1 there is a contact partner, in particular a plug 11, to which a coaxial cable for feeding the antenna 1 can be inserted. In order to be able to fasten the circuit board 3 to the housing body, in particular the angled plate 2, the legs of the plate 2, which are spaced apart parallel to one another, have a plurality of punching and bending regions 12, by means of which the circuit board 3 is fixed to the housing basic body. Such punch-bending areas 12 have the advantage; that they are easy to manufacture and thus the board 3 can be quickly fixed to the housing body 2.
Figur 2 zeigt die in Figur 1 in einer dreidimensionalen Ansicht dargestellte Antenne 1 im Schnitt an ihrem Einbauort. Im Endbereich eines Dachflansches 13 eines nicht weiter dargestellten Fahrzeuges schließt sich die Heckscheibe 14 an, die mittels einer Verklebung (Kleberaupe 15) an dem Dachflansch 13 befestigt wird. In dem Bereich zwischen der Scheibe 14 und einer Innenverkleidung 16 (Dachhimmel) befindet sich der Einbauort der Antenne .1 , der aufgrund der erfindungsgemäßen Ausgestaltung der Antenne 1 besonders flach gehalten werden kann.FIG. 2 shows the antenna 1 shown in FIG. 1 in a three-dimensional view in section at its installation location. In the end region of a roof flange 13 of a vehicle (not shown further), the rear window 14 connects, which is fastened to the roof flange 13 by means of an adhesive (bead of adhesive 15). In the area between the pane 14 and an inner lining 16 (headliner) is the installation location of the antenna .1, which can be kept particularly flat due to the inventive design of the antenna 1.
Die Antenne, insbesondere die Fahrzeugantenne für Mobilfunk, ist somit zusammenfassend als strahlender offener Hohlraumresonator mit besonders ausgeführtem Breitbandschlitz ausgebildet, um eine möglichst kompakte, insbesondere flache und kurze Bauweise zu erzielen. The antenna, in particular the vehicle antenna for mobile radio, is thus designed in summary as a radiating open cavity resonator with a specially designed broadband slot in order to achieve the most compact, in particular flat and short, construction possible.
Bezuqszeichenliste:LIST OF REFERENCES:
1. Antenne1. Antenna
2. Gehäusekörper2. Housing body
3. Platine3rd circuit board
4. Leitfähiger Bereich4. Conductive area
5. Leitfähiger Bereich5. Conductive area
6. Leitfähiger Bereich6. Conductive area
7. Erster Schlitz7. First slot
8. Zweiter Schlitz8. Second slot
9. Doppelknick9. Double kink
10. Fußpunkt10. Foot point
11. Stecker11. Connector
12. Stanz-Biege-Bereich12. Stamping and bending area
13. Dachflansch13. Roof flange
14. Scheibe14. Disc
15. Kleberaupe15. Glue bead
16. Innenverkleidung 16. Inner lining

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1. Antenne (1), insbesondere Fahrrzeugantenne für Mobilfunk, mit Strahlungsmitteln zum Empfangen und Senden von Hochfrequenzsignalen, dadurch gekennzeich- net, daß als Strahlungsmittel ein beidseitig offener und längs geschlitzter leitfähige Bereich (4 bis 6) in mehrere Frequenzbereichen zum Strahlen angeregt wird.1. Antenna (1), in particular vehicle antenna for mobile radio, with radiation means for receiving and transmitting high-frequency signals, characterized in that a radiation region which is open on both sides and has a longitudinally slotted conductive region (4 to 6) is excited to radiate in several frequency ranges.
2. Antenne (1) nach Anspruch 1 dadurch gekennzeichnet, daß wenigstens ein Bereich (5) einen Doppelknick (9) aufweist.2. Antenna (1) according to claim 1, characterized in that at least one area (5) has a double bend (9).
3. Antenne (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß wenigstens der Bereich (4) mit den anderen Bereichen (5, 6) einen spitz zulaufenden Schlitz (7) bildet.3. Antenna (1) according to claim 1 or 2, characterized in that at least the area (4) with the other areas (5, 6) forms a tapered slot (7).
4. Antenne (1) nach Anspruch 1 , 2 oder 3 dadurch gekennzeichnet, daß von dem Schlitz (7) ein weiterer, insbesondere in der Mitte des Schlitzes (7) abzweigender Schlitz (8) ausgeht, der die Bereiche (5, 6) voneinander trennt.4. Antenna (1) according to claim 1, 2 or 3, characterized in that from the slot (7) a further, in particular in the middle of the slot (7) branching slot (8) extends, the areas (5, 6) separates from each other.
5. Antenne (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeich- net, daß die Bereiche (4 bis 6) in die Richtung, in die keine Einstrahlung stattfinden soll, durch einen Gehäusekörper aus Metall, insbesondere aus einem abgewinkelten Blech (2), abgeschirmt sind.5. Antenna (1) according to one of the preceding claims, characterized in that the areas (4 to 6) in the direction in which no radiation is to take place, through a housing body made of metal, in particular of an angled sheet (2) are shielded.
6. Antenne (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeich- net, daß die Bereiche (4 bis 6) als Kupferfläche auf einer Platine (3) angeordnet sind. 6. Antenna (1) according to one of the preceding claims, characterized in that the areas (4 to 6) are arranged as a copper surface on a circuit board (3).
7. Antenne (1) nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß der abzweigende Schlitz (8) so ausgeführt ist, daß am Fußpunkt (10) der Antenne kein Gleichstromkurzschluß auftritt.7. Antenna (1) according to one of claims 4 to 6, characterized in that the branching slot (8) is designed so that no DC short circuit occurs at the base (10) of the antenna.
8. Antenne (1) nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, daß im Fußpunkt (10) der Antenne (10) auf der Platine (3) ein Kontaktpartner, insbesondere ein Stecker (11), angeordnet ist.8. Antenna (1) according to one of claims 6 or 7, characterized in that a contact partner, in particular a plug (11), is arranged in the base (10) of the antenna (10) on the circuit board (3).
9. Antenne (1) nach einem der Ansprüche 6, 7 oder 8, dadurch gekennzeichnet, daß die Platine (3) über Stanz-Biegebereiche (12) an dem Gehäusekörper befestigbar ist. 9. Antenna (1) according to one of claims 6, 7 or 8, characterized in that the circuit board (3) can be fastened to the housing body via stamping-bending areas (12).
EP02792761A 2001-12-15 2002-11-13 Wide band slot cavity antenna Expired - Lifetime EP1454381B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10161722 2001-12-15
DE10161722 2001-12-15
PCT/EP2002/012692 WO2003052873A1 (en) 2001-12-15 2002-11-13 Wide band slot cavity antenna

Publications (2)

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EP1454381A1 true EP1454381A1 (en) 2004-09-08
EP1454381B1 EP1454381B1 (en) 2009-10-28

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US (1) US7019705B2 (en)
EP (1) EP1454381B1 (en)
JP (1) JP2005513847A (en)
AT (1) ATE447245T1 (en)
DE (1) DE50213971D1 (en)
WO (1) WO2003052873A1 (en)

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Also Published As

Publication number Publication date
US20040104858A1 (en) 2004-06-03
WO2003052873A1 (en) 2003-06-26
DE50213971D1 (en) 2009-12-10
ATE447245T1 (en) 2009-11-15
US7019705B2 (en) 2006-03-28
JP2005513847A (en) 2005-05-12
EP1454381B1 (en) 2009-10-28

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