EP0740361A1 - Système d'antenne plane - Google Patents

Système d'antenne plane Download PDF

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Publication number
EP0740361A1
EP0740361A1 EP95119434A EP95119434A EP0740361A1 EP 0740361 A1 EP0740361 A1 EP 0740361A1 EP 95119434 A EP95119434 A EP 95119434A EP 95119434 A EP95119434 A EP 95119434A EP 0740361 A1 EP0740361 A1 EP 0740361A1
Authority
EP
European Patent Office
Prior art keywords
antenna
mobile radio
sheet metal
gps
antennas
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
EP95119434A
Other languages
German (de)
English (en)
Other versions
EP0740361B1 (fr
Inventor
Reinhard Berfelde
Chen Shun-Ping
Manfred Burkert
Christian Heuer
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.)
Fuba Automotive GmbH and Co KG
Original Assignee
Fuba Automotive GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1995114556 external-priority patent/DE19514556A1/de
Application filed by Fuba Automotive GmbH and Co KG filed Critical Fuba Automotive GmbH and Co KG
Priority claimed from DE19546010A external-priority patent/DE19546010A1/de
Publication of EP0740361A1 publication Critical patent/EP0740361A1/fr
Application granted granted Critical
Publication of EP0740361B1 publication Critical patent/EP0740361B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna

Definitions

  • the invention relates to a flat antenna arrangement for mobile radio and for satellite-based vehicle navigation (GPS) with the generic features specified in the preamble of the main claim.
  • the antenna combination according to the invention is used as an attached module that is firmly connected to the body of a motor vehicle or as a module, for example with holding magnets for releasable fastening. It is formed from the GPS antenna for 1.575 GHz and optionally the antennas for mobile radio in the 900 MHz and 1.8 GHz range.
  • the invention has for its object to provide an antenna module for satellite-based vehicle navigation (GPS) and for mobile radio, in which a stripline antenna for the GPS band optionally with a flat antenna for radio in the 900 MHz band and or or can be combined with such an antenna for 1.8 GHz.
  • GPS satellite-based vehicle navigation
  • FIG. 1 shows two views of an antenna combination according to the invention, formed from the GPS antenna and an antenna for mobile radio in the 900 MHz range.
  • the GPS antenna consists of a circuit board 1, as is also used for printed circuits, with the area-wide metallization 2 as the ground plane and the rectangular conductive surface segment (patch) 3 as the radiator area.
  • the feed point 4 is located outside the center of the area because the GPS antenna works with circular polarization.
  • the board 1 has a diameter of 85 mm and the radiator surface has an edge length of 50 mm.
  • the effective edge length corresponds to 1/2 of the average operating wavelength in the GPS band, and the geometric dimension depends in practice on the shortening factor associated with the relative dielectric constant of the board material.
  • the ground plane 2 of the GPS antenna must be galvanically isolated from the antenna below, e.g. through an air gap of at least 2 mm width or through an interposed foil made of dielectric material.
  • the cellular antenna includes the sheet metal element 6 and the short-circuit element 7 in the present example, which together with the ground reference surface 8, for example the roof of a metal vehicle body, form a cavity resonator for the intended operating frequency, on the open sides of which field formation occurs with all-round radiation in the far field .
  • the sheet metal element 6 is designed as a circular section with an opening angle of 90 ° and a radius of 90 mm.
  • the edge dimension results from 1/4 of the mean operating wavelength of the radio frequency range.
  • the dimension A between the sheet metal element 6 and the ground reference surface 8 should be at least 0.04 ⁇ , to ensure sufficient values of efficiency and bandwidth.
  • the short-circuit element 7 is not directly connected to the sheet 8 of the body or an adequate ground plane.
  • antenna modules which like the usual roof antennas - e.g. Short rod antennas - are screwed over a hole in the roof panel, a galvanic ground connection is made in the usual way. Through the opening in the roof panel, the RF cables are then routed from the antennas into the vehicle interior.
  • Part of the mechanism of action of the mobile radio antenna selected for the invention is that the inner conductor 10 of the connecting cable 13 is exposed for one piece within the space under the sheet metal element 6 before the connection to the feed point 11.
  • the outer conductors of the two coaxial cables 12 and 13 are connected to the ground potential 2 and 8/9 at points 14 and 15 next to or near the feed point 4 and 11, respectively. At a distance of 1/4 of the middle one belonging to the mobile radio antenna Operating wavelength, measured from the contact points 14, 15, they are again grounded at point 16. With this arrangement, the influence of the relatively large ground area 2 of the GPS antenna on the field formation of the mobile radio antenna is neutralized to a certain extent: the circuit board 1 with the conductive surface 2 and the sheet metal element 6 are - so mainly for reasons of space - placed so close together that normally an exchange and thus the outflow of signal energy in a capacitive way between the ground surface 2 and the sheet metal element cannot be avoided.
  • a standing wave is formed according to the rules of line theory for lines with a short circuit with the formation of a voltage maximum and with a current flow equal to zero in points 14 and 15, respectively the nodes of current and voltage are offset from each other by ⁇ / 4.
  • the HF power which is coupled into the ground plane 2 by the sheet metal element 6 during mobile radio operation, cannot flow away via the outer conductor of the cable 12 of the GPS antenna.
  • FIG. 2 shows an arrangement which represents a surprising and advantageous continuation of the combination idea and, above all, leads to a simplified construction of the stripline GPS antenna.
  • the relatively large-area, metallized plate 1 on both sides, as used in the embodiment according to FIG. 1, is replaced by a small disk 1 a, which is only provided with the metallization 3 as the radiator surface.
  • the additional dielectric 5 or the free distance between the circuit board and the sheet metal element 6 is completely eliminated.
  • the sheet metal element 6a of the radio antenna is used as the ground surface for the stripline GPS antenna, which thus fulfills an additional function.
  • the sheet metal element 6a is circular, and the circuit board 1a with the radiating surface of the GPS antenna is arranged centrally on it.
  • the short-circuit element 7a is arranged in the lateral position within the circumscribed circle of the sheet metal element 6a.
  • the short-circuit element 7a - like the element 7 in exemplary embodiment 1 - can also be formed from one or more pins or similar bodies.
  • a second ground contact 16 at a distance of 1/4 of the mean radio operating wavelength from the feed point 4 is required only for the feed line cable 12 of the GPS antenna.
  • the effective edge length of the surface segment 3 is ⁇ / 2 for the GPS frequency.
  • the circuit board material is to be selected such that the dimension d of the diagonal is smaller than the diameter D of the sheet metal element 6 a.
  • FIG. 3 in addition to the embodiment according to FIG. 1, variants for the positioning of two mobile radio antennas in combination with the GPS antenna are shown.
  • the sheet metal elements 6 and 6 ' are next to one another and in the case 3b arranged one above the other.
  • the GPS antenna can be placed on the sheet metal element 6 of the antenna for the lower radio frequency - with a dielectric in between
  • the components on the base plate are covered with the hood 17 made of a dielectric material and sealed moisture-proof.
  • a favorable variant would also be to form the entire arrangement from molded parts from a hardening foam, the outer contours of which correspond to those of the hood 17. At the same time, the foam would permanently fix the antenna parts in place.
  • FIGS. 4 to 6 show radiation characteristics that were obtained with the combination of a GPS antenna with a mobile radio antenna for the 900 MHz band. The pictures speak for themselves. The measurements have shown that the radiation diagrams obtained with the two antennas in a separate arrangement are identical to those with a combined arrangement of the antennas, and above all that no level differences can be determined.
  • the performance of the antenna combination according to the invention in the mobile radio area is completely identical to that of a conventional ⁇ / 4 long rod antenna.
  • the GPS range is +3 dBic - this is a common and satisfactory value for stripline antennas of this type.

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Details Of Aerials (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP95119434A 1995-04-20 1995-12-09 Système d'antenne plane Expired - Lifetime EP0740361B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19514556 1995-04-20
DE1995114556 DE19514556A1 (de) 1995-04-20 1995-04-20 Flachantennen-Anordnung
DE19546010A DE19546010A1 (de) 1995-12-09 1995-12-09 Flachantennen-Anordnung
DE19546010 1995-12-09

Publications (2)

Publication Number Publication Date
EP0740361A1 true EP0740361A1 (fr) 1996-10-30
EP0740361B1 EP0740361B1 (fr) 1998-03-04

Family

ID=26014491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95119434A Expired - Lifetime EP0740361B1 (fr) 1995-04-20 1995-12-09 Système d'antenne plane

Country Status (4)

Country Link
US (1) US5706015A (fr)
EP (1) EP0740361B1 (fr)
DE (1) DE59501555D1 (fr)
ES (1) ES2114717T3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0841715A2 (fr) * 1996-11-08 1998-05-13 FUBA Automotive GmbH Antenne plate
EP0977307A1 (fr) * 1998-07-30 2000-02-02 Rac S.r.l. Structure d' antenne à multiple antennes, en particulier pour installations au sol et satellite
DE29823087U1 (de) * 1998-12-28 2000-05-04 reel Reinheimer Elektronik GmbH, 35435 Wettenberg Breitbandige, linear polarisierte Mehrbereichsantenne, insbesondere für den mobilen Einsatz in Fahrzeugen
DE19924349A1 (de) * 1999-05-27 2000-12-21 Kathrein Werke Kg Mobilantenne, insbesondere Fahrzeugantenne für zumindest eine zirkulare und zumindest eine lineare, vorzugsweise vertikale Polarisation
DE10064128A1 (de) * 2000-12-21 2002-07-25 Kathrein Werke Kg Patch-Antenne für den Betrieb in mindestens zwei Frequenzbereichen
DE102016108188A1 (de) * 2016-05-03 2017-11-09 Kathrein-Werke Kg Antennenanordnung
CN112928496A (zh) * 2021-03-31 2021-06-08 江苏灿勤科技股份有限公司 一种射频导航天线

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DE19543625C1 (de) * 1995-11-23 1997-01-30 Bosch Gmbh Robert Vorrichtung zum Nachrüsten einer weiteren Antenne an eine vorhandene Fahrzeugantenne und Fahrzeugzusatzantenne
US6111549A (en) * 1997-03-27 2000-08-29 Satloc, Inc. Flexible circuit antenna and method of manufacture thereof
US6098547A (en) * 1998-06-01 2000-08-08 Rockwell Collins, Inc. Artillery fuse circumferential slot antenna for positioning and telemetry
EP0978729A3 (fr) * 1998-08-07 2002-03-20 Hitachi, Ltd. Appareil d'émission-réception à haute fréquence pour applications comme système radar sur véhicule
US6396446B1 (en) 1999-02-16 2002-05-28 Gentex Corporation Microwave antenna for use in a vehicle
US6166698A (en) 1999-02-16 2000-12-26 Gentex Corporation Rearview mirror with integrated microwave receiver
US6100855A (en) * 1999-02-26 2000-08-08 Marconi Aerospace Defence Systems, Inc. Ground plane for GPS patch antenna
US6271797B2 (en) 1999-06-18 2001-08-07 R. A. Miller Industries, Inc. Combination antenna mount
SE517564C2 (sv) 1999-11-17 2002-06-18 Allgon Ab Antennanordning för en bärbar radiokommunikationsanordning, bärbar radiokommunikationsanordning med sådan antennanordning och metod för att driva nämnda radiokommunikationsanordning
WO2001052353A2 (fr) * 2000-01-12 2001-07-19 Emag Technologies L.L.C. Antenne imprimee omnidirectionnelle compacte et peu onereuse
US6664932B2 (en) 2000-01-12 2003-12-16 Emag Technologies, Inc. Multifunction antenna for wireless and telematic applications
JP3626894B2 (ja) * 2000-04-20 2005-03-09 アルプス電気株式会社 Ｇｐｓ受信アンテナ
DE10037386A1 (de) * 2000-08-01 2002-02-14 Bosch Gmbh Robert Kombiniertes Empfänger- und Transpondermodul
US20020111194A1 (en) * 2000-12-11 2002-08-15 Farbod Behbahani Laptop wireless systems integrated with an LCD panel
US7072649B2 (en) * 2001-11-06 2006-07-04 Volvo Trucks North America, Inc. Multiple purpose antenna system
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US7885745B2 (en) * 2002-12-11 2011-02-08 Hemisphere Gps Llc GNSS control system and method
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US7705793B2 (en) * 2004-06-10 2010-04-27 Raysat Antenna Systems Applications for low profile two way satellite antenna system
EP1447878A1 (fr) * 2003-02-12 2004-08-18 Hirschmann Electronics GmbH & Co. KG Antenne pour un verrouillage radio centralisé
US9002565B2 (en) 2003-03-20 2015-04-07 Agjunction Llc GNSS and optical guidance and machine control
US8140223B2 (en) * 2003-03-20 2012-03-20 Hemisphere Gps Llc Multiple-antenna GNSS control system and method
US8686900B2 (en) * 2003-03-20 2014-04-01 Hemisphere GNSS, Inc. Multi-antenna GNSS positioning method and system
US8594879B2 (en) * 2003-03-20 2013-11-26 Agjunction Llc GNSS guidance and machine control
US8265826B2 (en) 2003-03-20 2012-09-11 Hemisphere GPS, LLC Combined GNSS gyroscope control system and method
US8271194B2 (en) 2004-03-19 2012-09-18 Hemisphere Gps Llc Method and system using GNSS phase measurements for relative positioning
US8190337B2 (en) * 2003-03-20 2012-05-29 Hemisphere GPS, LLC Satellite based vehicle guidance control in straight and contour modes
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US7911400B2 (en) * 2004-01-07 2011-03-22 Raysat Antenna Systems, L.L.C. Applications for low profile two-way satellite antenna system
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TWI533513B (zh) 2014-03-04 2016-05-11 啟碁科技股份有限公司 平板雙極化天線
TWI547014B (zh) 2014-07-31 2016-08-21 啟碁科技股份有限公司 平板雙極化天線及複合天線
TWI540791B (zh) 2014-11-05 2016-07-01 啟碁科技股份有限公司 平板雙極化天線及複合天線
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0841715A2 (fr) * 1996-11-08 1998-05-13 FUBA Automotive GmbH Antenne plate
DE19646100A1 (de) * 1996-11-08 1998-05-14 Fuba Automotive Gmbh Flachantenne
US5929812A (en) * 1996-11-08 1999-07-27 Fuba Automotive Gmbh Flat antenna
EP0841715A3 (fr) * 1996-11-08 2000-04-26 FUBA Automotive GmbH Antenne plate
EP0977307A1 (fr) * 1998-07-30 2000-02-02 Rac S.r.l. Structure d' antenne à multiple antennes, en particulier pour installations au sol et satellite
DE29823087U1 (de) * 1998-12-28 2000-05-04 reel Reinheimer Elektronik GmbH, 35435 Wettenberg Breitbandige, linear polarisierte Mehrbereichsantenne, insbesondere für den mobilen Einsatz in Fahrzeugen
DE19924349A1 (de) * 1999-05-27 2000-12-21 Kathrein Werke Kg Mobilantenne, insbesondere Fahrzeugantenne für zumindest eine zirkulare und zumindest eine lineare, vorzugsweise vertikale Polarisation
DE10064128A1 (de) * 2000-12-21 2002-07-25 Kathrein Werke Kg Patch-Antenne für den Betrieb in mindestens zwei Frequenzbereichen
US6861988B2 (en) 2000-12-21 2005-03-01 Kathrein-Werke Kg Patch antenna for operating in at least two frequency ranges
DE102016108188A1 (de) * 2016-05-03 2017-11-09 Kathrein-Werke Kg Antennenanordnung
DE102016108188B4 (de) * 2016-05-03 2018-04-12 Kathrein-Werke Kg Antennenanordnung
CN112928496A (zh) * 2021-03-31 2021-06-08 江苏灿勤科技股份有限公司 一种射频导航天线
CN112928496B (zh) * 2021-03-31 2024-06-11 江苏灿勤科技股份有限公司 一种射频导航天线

Also Published As

Publication number Publication date
US5706015A (en) 1998-01-06
EP0740361B1 (fr) 1998-03-04
ES2114717T3 (es) 1998-06-01
DE59501555D1 (de) 1998-04-09

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