EP2348576A1 - Module d'antenne - Google Patents

Module d'antenne Download PDF

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Publication number
EP2348576A1
EP2348576A1 EP10000354A EP10000354A EP2348576A1 EP 2348576 A1 EP2348576 A1 EP 2348576A1 EP 10000354 A EP10000354 A EP 10000354A EP 10000354 A EP10000354 A EP 10000354A EP 2348576 A1 EP2348576 A1 EP 2348576A1
Authority
EP
European Patent Office
Prior art keywords
antenna
parasitic
module according
passive
antenna module
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Withdrawn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
EP10000354A
Other languages
German (de)
English (en)
Inventor
Oliver Dr. Klemp
Andreas Thiel
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP10000354A priority Critical patent/EP2348576A1/fr
Publication of EP2348576A1 publication Critical patent/EP2348576A1/fr
Withdrawn legal-status Critical Current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
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/525—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between emitting and receiving antennas
    • 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
    • H01Q5/48—Combinations of two or more dipole type antennas
    • H01Q5/49—Combinations of two or more dipole type antennas with parasitic elements used for purposes other than for dual-band or multi-band, e.g. imbricated Yagi antennas

Definitions

  • the invention relates to an antenna module for traffic telematics systems having at least one V2V or I2V antenna and at least one further antenna, in particular a cellular antenna and / or a GPS antenna.
  • Traffic telematics is the use of telematics in transport. It covers everything that has to do with vehicles, their occupants and the sending, receiving, processing and presentation of data in a motor vehicle. Furthermore, transport telematics supports the coordination of road traffic.
  • the currently known traffic telematics systems include navigation and cellular services used to increase traffic safety.
  • the GPS position means the position determined by means of a global positioning system GPS (Global Positioning System).
  • Antenna modules for traffic telematics systems therefore combine navigation and features of a cellular network (typically cellular 2G and 3G networks), including antennas for both of these services.
  • a cellular network typically cellular 2G and 3G networks
  • the cellular and navigation services include multiple standards. Accordingly, the antenna modules used for this purpose are referred to as multi-standard antenna modules.
  • European frequency allocation requires simultaneous system functionality in the bands 810-960 MHz, 1710-1880 MHz (both called 2G frequencies) and 1920-2170 MHz (so-called 3G frequencies).
  • the various antennas are housed in a housing which is applied in the rear of the vehicle center of the vehicle roof.
  • the antenna or multi-standard antenna modules are additionally provided with antenna elements for V2V (vehicle to vehicle) communication links, i. Vehicle-to-vehicle communication links are provided.
  • V2V vehicle to vehicle
  • V2V communication links are currently defined as connections within a bandwidth of 30 MHz, centered around the frequency 5.89 GHz, i. ⁇ 5.9 GHz.
  • V2V communication is in line with the European Union's "i2010" initiative for "Intelligent Vehicles” for increased traffic efficiency and a reduction in the number of traffic accidents.
  • An antenna for terrestrial services such as an antenna for a radiotelephone or an antenna for V2V communication links usually has a comparable with the directivity of a monopole directivity with a maximum antenna gain in the azimuthal plane. If the antenna is mounted on an unlimited groundplan (GP) or ground plane, the azimuthal directional characteristic has a nearly ideal symmetry.
  • GP groundplan
  • Fig. 1 is exemplified such a nearly symmetrical directional characteristic of a freestanding terrestrial, provided on a circular metallic ground plane monopole V2V antenna reproduced.
  • the directional characteristic for different elevation angles "theta" is shown.
  • the dimensions of the antenna module including die-cast antennas, printed circuit board, hood or housing, etc. are in the range of the operating wavelength.
  • the physical dimensions of the integrated antenna module are in the range several wavelengths.
  • antennas produced by the die-casting method and, for example, the associated antenna elements of the other services, such as GPS and radio telephone act as scattering elements for the 5.9 GHz signal.
  • Fig. 2 reproduced the directional characteristic of a V2V antenna arranged together with a GPS antenna and a radio telephone or cellular antenna in a conventional motor vehicle roof antenna module.
  • the reduced roundness of the directional characteristic is particularly relevant in safety-relevant communication systems in the 5.9 GHz range, where an omnidirectional or round-receive characteristic in the azimuthal plane represents a strict requirement for robust communication links and error-free wireless transmission of safety-relevant messages.
  • the invention has for its object to provide an improved antenna module of the type mentioned, in which the aforementioned disadvantages are eliminated.
  • the V2V or I2V antenna at least compensates for the deterioration of a predeterminable directional characteristic caused by, in particular, the at least one adjacent further antenna, in particular omnidirectional and / or omnidirectional characteristic of the V2V or I2V antenna in the near field arranged parasitic passive antenna element is assigned.
  • the various antennas can each act as a transmitting and / or receiving antenna.
  • the V2V or I2V antenna integrated together with at least one further antenna in the antenna module at least substantially retains the respectively desired directional characteristic despite the at least one further antenna.
  • an omnidirectional or round reception directivity characteristic can be predetermined for this V2V or I2V antenna.
  • the V2V or I2V antenna are assigned at least two parasitic passive antenna elements provided at different positions.
  • a respective parasitic passive antenna element may in particular comprise a parasitic reflector element and / or a parasitic straightening element.
  • the V2V or I2V antenna is provided or integrated in the manner of an asymmetrical monopole on a metallic ground plane.
  • the parasitic passive antenna element depending on the individual electrical length act as a directional element or as a reflector element.
  • the various antennas can advantageously be accommodated in a common, in particular mountable on a vehicle roof housing.
  • the parasitic or passive antenna elements are preferably arranged in the housing.
  • one or more parasitic passive antenna elements are also integrated in the housing wall.
  • An operating frequency of the V2V antenna in the range of 5.9 GHz is particularly advantageous for the currently customary housing shapes and sizes inasmuch as they permit an arrangement of the parasitic passive antenna elements in the housing or integration in the housing wall having the relevant dimensions.
  • the or the parasitic passive antenna elements are selected and arranged in particular with regard to their electrical length that the variance of the directional characteristic of the V2V or I2V antenna and thus the difference between the maximum and minimum value of the predetermined directivity of V2V or I2V antenna is reduced to a minimum.
  • the parasitic or passive antenna elements are chosen and arranged in such a way, in particular with regard to their electrical length, that the mean effective gain of the V2V or I2V antenna is maximized.
  • the V2V or. I2V antenna and the parasitic passive antenna elements may be manufactured on a common carrier.
  • the unit comprising the V2V or I2V antenna and the parasitic passive antenna element (s) is manufactured in MID (Molded Interconnected Devices) technology.
  • parasitic antenna elements can thus be added to the actively excited radiator or receiver.
  • These parasitic antenna elements can be arranged in the electromagnetic near field region of the radiator or receiver, ie the relevant V2V or I2V antenna, so that they are connected by mutual coupling to the in particular actively fed V2V or I2V antenna be excited by this V2V or I2V antenna.
  • the parasitic antenna elements may in particular be integrated in a roof antenna module in order to compensate for undesired impairments of the antenna directivity.
  • the physical dimensions, in particular electrical length, of the passive parasitic antenna elements should in the case that they are arranged or integrated in the manner of an asymmetric monopole on a metallic ground plane, preferably in each case in the region of a quarter of the wavelength to which the V2V- or I2V antenna is tuned.
  • a respective V2V or I2V antenna can act as Richtelement- or as a reflector element depending on their individual electrical length.
  • the further antennas may comprise, for example, a cellular antenna, a GPS antenna, a V2V or I2V antenna and two parasitic antenna elements of corresponding electrical length and position. If a cellular antenna is provided, it may in principle also be a multi-standard antenna, e.g. to act a GSM 900/1800 and preferably UMTS antenna.
  • the passive parasitic antenna elements Due to the small geometric length of the parasitic antenna elements and the operating frequency in particular 5.9 GHz, the passive parasitic antenna elements have at most a negligible negligible Influence on the antennas for the other services, such as a cellular antenna, GPS antenna, etc.
  • N ⁇ indicates the number of measured values in the horizontal or azimuthal plane
  • C abs the amount of the electric field which is representative of the directional characteristic of the antenna.
  • the directional characteristic of a V2V or I2V antenna can be significantly improved.
  • At least one V2V antenna instead of or in addition to the at least one V2V antenna, it is also possible, for example, to provide at least one I2V antenna with at least one associated parasitic passive antenna element arranged in its near field.
  • Fig. 4 1 shows an exemplary spatial structure of an antenna module 10 according to the invention for traffic telematics systems provided here for example as a multi-standard roof antenna module with a V2V antenna 12 and at least one further antenna, in the present case for example a cellular antenna 14, here for example a multistandard cellular antenna, and a GPS antenna.
  • Antenna 16 instead of or in addition to the V2V antenna 12, for example, an I2V antenna may be provided. Basically, several V2V or I2V antennas are conceivable.
  • the V2V antenna 12 is assigned to compensate for the caused by the adjacent other antennas 14, 16 deterioration of a predetermined directional characteristic, in particular omnidirectional and / or Rundempfangsricht characterizing the V2V antenna 12 at least one arranged in their near field parasitic passive antenna element, wherein in the present For example, if two such parasitic passive antenna elements 18 are provided.
  • the parasitic passive antenna elements 18 may be provided in particular at different positions.
  • the parasitic passive antenna elements 18 may be, above all, discrete metal elements.
  • the parasitic passive antenna elements 18 can each act as a reflector element and / or as a straightening element.
  • the V2V antennas 12 can each be provided or integrated in the manner of an asymmetrical monopole on a metallic ground plane be.
  • the dimensions of a respective parasitic passive antenna element 18 are preferably in the range of a quarter of the wavelength to which the V2V antenna 12 is tuned.
  • the respective dimensions of the parasitic passive antenna elements 18 may in particular be the respective electrical length.
  • the parasitic passive antenna elements 18 can, as in the Fig. 4 represented, as well as the antennas 12 - 16, for example, be housed in a common, in particular mounted on a vehicle roof housing 20. If the operating frequency of the V2V antenna 12 is, for example, in the range of the center frequency 5.89 GHz in accordance with the European Commission's Frequency Directive 2008/671 / EC, ie in the range of ⁇ 5.9 GHz, the housing of motor vehicle Roof antenna modules usually such accommodation of the parasitic passive antenna elements 18 in the housing 20 easily possible. As already mentioned, however, parasitic passive antenna elements can in principle also be integrated in the housing wall. At significantly lower operating frequencies, the arrangement of such parasitic passive antenna elements in the housing or the integration in the housing is no longer readily possible. An operating frequency in the range of the center frequency 5.89 GHz is therefore advantageous.
  • the parasitic passive antenna elements 18 can also be chosen and arranged in such a way that the variance of the directional characteristic of the V2V antenna 12 and thus the difference between the maximum and minimum values of the predeterminable directional characteristic the V2V antenna 12 is reduced to a minimum.
  • the parasitic passive antenna element (s) 18 may advantageously also be chosen and arranged such that the average effective gain of the V2V antenna 12 is maximized, particularly with regard to their electrical length.
  • the V2V antenna 12 and / or the parasitic passive antenna elements can be manufactured, for example, on a common carrier.
  • the unit comprising the V2V antenna 12 and the parasitic passive antenna elements 18 may be manufactured in MID (Molded Interconnected Devices) technology.
  • parasitic passive antenna elements 18 can now from the Fig. 2 apparent, caused by the adjacent further antennas 16, 18 deterioration of the predetermined directivity, here, for example, an omnidirectional and / or omnidirectional characteristic, at least substantially compensated.
  • the distance a between the parasitic passive antenna elements 18 and the ground plane is advantageously half a wavelength at the operating frequency, here for example the frequency in the range of ⁇ 5.9 GHz.
  • the antennas 12 to 16 may, for example, be provided on a common support 24 located in the ground plane 22.
  • the length l of this carrier 24 can be in particular three times the wavelength of the operating frequency, which in this case is in the range of 5.9 GHz, for example.
  • Fig. 5 shows a schematic plan view of another exemplary embodiment of a provided for example again as a multi-standard roof antenna module according to the invention antenna module 10 for traffic telematics systems.
  • the antenna module 10 again comprises a V2V antenna 12 and as further antennas a cellular antenna 14, here again a multi-standard cellular antenna (for example "dual band GSM 900/1800") and a GPS antenna 16.
  • a cellular antenna 14 here again a multi-standard cellular antenna (for example "dual band GSM 900/1800") and a GPS antenna 16.
  • At least one parasitic passive antenna element 18 arranged in its near field is assigned to the V2V antenna 12 to compensate for the deterioration of a predeterminable directional characteristic of the V2V antenna 12 caused, in particular, by the adjacent further antennas 16, 18.
  • two such parasitic passive antenna elements 18 are provided. Again, the best possible roundness of the directional characteristic is sought in the present case.
  • the required positions of the respective parasitic passive antenna elements 18 can be determined, for example, via a corresponding replacement source model.
  • the dimensions or electrical length of a respective parasitic passive antenna element 18 In particular, it can be chosen again as described above.
  • Fig. 6 shows two for different geometric lengths of the parasitic passive antenna elements 18 resulting directional characteristics 26, 28 of the V2V antenna 12 of the antenna module 10 according to Fig. 5 compared to the directional characteristic 30 of a standard antenna module without parasitic passive antenna elements.
  • Fig. 5 also minimizes the standard deviation.
  • the linear antenna gain at an elevation angle of 90 ° and an operating frequency in the range of 5.85 GHz is reproduced.
  • the improvement achieved with respect to the directional characteristic of the V2V antenna can also be found in the following table for the exemplary present configuration. Not only does this result in a reduction of the peak / peak ratio and the relevant variance of the directional characteristic, but also the effective average antenna gain of the antenna in the azimuthal plane can be increased by the corresponding use of parasitic passive antenna elements in the roof antenna module.
  • the values shown in the following table show that the invention with particular advantage is particularly applicable in connection with a V2V antenna, which is operated at a center frequency in the range of ⁇ 5.9 GHz.

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP10000354A 2010-01-15 2010-01-15 Module d'antenne Withdrawn EP2348576A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10000354A EP2348576A1 (fr) 2010-01-15 2010-01-15 Module d'antenne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10000354A EP2348576A1 (fr) 2010-01-15 2010-01-15 Module d'antenne

Publications (1)

Publication Number Publication Date
EP2348576A1 true EP2348576A1 (fr) 2011-07-27

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ID=41716339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10000354A Withdrawn EP2348576A1 (fr) 2010-01-15 2010-01-15 Module d'antenne

Country Status (1)

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EP (1) EP2348576A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014072683A1 (fr) * 2012-11-09 2014-05-15 The University Of Birmingham Antenne mimo reconfigurable pour véhicules
DE102013206519A1 (de) * 2013-04-12 2014-10-16 Bayerische Motoren Werke Aktiengesellschaft Antennensystem für ein Fahrzeug und Verfahren zur Herstellung eines solchen Antennensystems
EP3091608A1 (fr) * 2015-05-04 2016-11-09 TE Connectivity Germany GmbH Système d'antenne et module d'antenne avec un élément parasite pour l'amélioration d'un diagramme de rayonnement
WO2016192936A1 (fr) * 2015-06-03 2016-12-08 Continental Automotive Gmbh Module antenne pour véhicule automobile
CN107592947A (zh) * 2015-03-09 2018-01-16 Lg伊诺特有限公司 包含车辆型车联网通信系统的鲨鱼鳍天线
DE102016219163A1 (de) 2016-10-04 2018-04-05 Bayerische Motoren Werke Aktiengesellschaft Antennenanordnung für ein Fahrzeug und Fahrzeug
US10211539B2 (en) 2012-07-31 2019-02-19 Smart Antenna Technologies Ltd. Reconfigurable antenna

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003289215A (ja) * 2002-03-28 2003-10-10 Murata Mfg Co Ltd アンテナの配置構成およびアンテナモジュールおよび通信機
US20060038736A1 (en) * 2004-08-20 2006-02-23 Nokia Corporation Isolation between antennas using floating parasitic elements
DE102005054286A1 (de) * 2005-11-11 2007-05-16 Fuba Automotive Gmbh Antennenanordnung
US20080055171A1 (en) * 2006-09-04 2008-03-06 Junichi Noro Complex antenna device
WO2009065806A1 (fr) * 2007-11-20 2009-05-28 Continental Automotive Gmbh Module antenne multibande en forme d'aileron de requin pour véhicules

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003289215A (ja) * 2002-03-28 2003-10-10 Murata Mfg Co Ltd アンテナの配置構成およびアンテナモジュールおよび通信機
US20060038736A1 (en) * 2004-08-20 2006-02-23 Nokia Corporation Isolation between antennas using floating parasitic elements
DE102005054286A1 (de) * 2005-11-11 2007-05-16 Fuba Automotive Gmbh Antennenanordnung
US20080055171A1 (en) * 2006-09-04 2008-03-06 Junichi Noro Complex antenna device
WO2009065806A1 (fr) * 2007-11-20 2009-05-28 Continental Automotive Gmbh Module antenne multibande en forme d'aileron de requin pour véhicules

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10211539B2 (en) 2012-07-31 2019-02-19 Smart Antenna Technologies Ltd. Reconfigurable antenna
US9825354B2 (en) 2012-11-09 2017-11-21 Smart Antenna Technologies Ltd. Reconfigurable MIMO antenna for vehicles
WO2014072683A1 (fr) * 2012-11-09 2014-05-15 The University Of Birmingham Antenne mimo reconfigurable pour véhicules
DE102013206519A1 (de) * 2013-04-12 2014-10-16 Bayerische Motoren Werke Aktiengesellschaft Antennensystem für ein Fahrzeug und Verfahren zur Herstellung eines solchen Antennensystems
DE102013206519B4 (de) 2013-04-12 2023-08-17 Bayerische Motoren Werke Aktiengesellschaft Antennensystem für ein Fahrzeug und Verfahren zur Herstellung eines solchen Antennensystems
CN107592947A (zh) * 2015-03-09 2018-01-16 Lg伊诺特有限公司 包含车辆型车联网通信系统的鲨鱼鳍天线
CN107592947B (zh) * 2015-03-09 2021-03-02 Lg伊诺特有限公司 包含车辆型车联网通信系统的鲨鱼鳍天线
CN107567667A (zh) * 2015-05-04 2018-01-09 泰科电子连接荷兰公司 具有用于辐射图案改进的寄生元件的天线系统和天线模块
JP2018518884A (ja) * 2015-05-04 2018-07-12 ティーイー コネクティビティ ネーデルランド ビーヴイＴＥ Ｃｏｎｎｅｃｔｉｖｉｔｙ Ｎｅｄｅｒｌａｎｄ ＢＶ 放射パターンの改良のための非励振素子を有するアンテナシステムおよびアンテナモジュール
WO2016177782A1 (fr) * 2015-05-04 2016-11-10 Te Connectivity Nederland Bv Système d'antennes et module d'antenne avec un élément parasite d'un diagramme de rayonnement amélioré
EP3091608A1 (fr) * 2015-05-04 2016-11-09 TE Connectivity Germany GmbH Système d'antenne et module d'antenne avec un élément parasite pour l'amélioration d'un diagramme de rayonnement
WO2016192936A1 (fr) * 2015-06-03 2016-12-08 Continental Automotive Gmbh Module antenne pour véhicule automobile
DE102016219163A1 (de) 2016-10-04 2018-04-05 Bayerische Motoren Werke Aktiengesellschaft Antennenanordnung für ein Fahrzeug und Fahrzeug

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