EP1793449A1 - Mehrband-Fahrzeugantenne für den Mobilfunk - Google Patents

Mehrband-Fahrzeugantenne für den Mobilfunk Download PDF

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Publication number
EP1793449A1
EP1793449A1 EP06123830A EP06123830A EP1793449A1 EP 1793449 A1 EP1793449 A1 EP 1793449A1 EP 06123830 A EP06123830 A EP 06123830A EP 06123830 A EP06123830 A EP 06123830A EP 1793449 A1 EP1793449 A1 EP 1793449A1
Authority
EP
European Patent Office
Prior art keywords
laminar element
multiband antenna
laminar
vehicular
vehicular multiband
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Withdrawn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
EP06123830A
Other languages
English (en)
French (fr)
Inventor
Enrico Toniolo
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.)
Calearo Antenne SpA
Original Assignee
Calearo Antenne SpA
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 Calearo Antenne SpA filed Critical Calearo Antenne SpA
Publication of EP1793449A1 publication Critical patent/EP1793449A1/de
Withdrawn legal-status Critical Current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
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • 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
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/378—Combination of fed elements with parasitic elements
    • 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

Definitions

  • the invention concerns a vehicular multiband antenna particularly suited to be used for transmitting and receiving radio-frequency signals for mobile telephony.
  • a frequency band centered on a lower frequency around 900MHz
  • one or more frequency bands centered on higher frequencies around 2GHz
  • the vehicular antennas belonging to the known art are all distinguished by the fact that they are compatible with one or more transmitting and receiving standards, but not with all the existing standards.
  • a further inconvenience is constituted by the fact that in order to be compatible with all the existing mobile telephony services worldwide a motor vehicle must be equipped with a bulky and cumbersome system of antennas.
  • the aim of the present invention is to overcome all the drawbacks described.
  • a first aim of the invention is to carry out a vehicular multiband antenna that is capable of correctly receiving radio-frequency signals in the frequency bands used by all mobile telephony standards.
  • a further aim of the invention is to carry out a vehicular multiband antenna whose dimensions can be compared with or are smaller than those of the antennas belonging to the known art and suited to receive only the radio-frequency signals of some transmitting and receiving standards for mobile telephony.
  • a vehicular multiband antenna for mobile telephony comprising:
  • each one of the first, second and third laminar elements has a surface delimited by a perimeter consisting of an irregular line and at least one enlarged area.
  • the arrangement of the vehicular multiband antenna on a single dielectric support allows a particularly compact vehicular multiband antenna for mobile telephony to be obtained.
  • the presence of the third electrically conductive laminar element with one earthing point makes it possible to carry out, with the first laminar element beside which the third laminar element develops, a sort of double-wire structure that is well suited to the impedance adaptation described below.
  • the plurality of electrically conductive shaped areas arranged on the second surface of the dielectric support facilitate the impedance adaptation mentioned above.
  • the vehicular multiband antenna for mobile telephony that is the subject of the invention is represented in Figure 1, where it is indicated as a whole by 1 and where it is possible to see that it comprises a single dielectric support 2 on which there are a first transceiver unit 3 and a second transceiver unit 4.
  • the transceiver unit 3 comprises a first electrically conductive laminar element 5 operatively connected to a transceiver line for signals and applied to a surface 7 of the dielectric support 2, while the second transceiver unit 4 comprises a second laminar element 6, which is also electrically conductive, operatively connected to the transceiver line for signals and applied to the same surface 7 of the dielectric support 2.
  • the vehicular multiband antenna 1 comprises a third electrically conductive laminar element 8 applied to the first surface 7 of the dielectric support 2 and provided with one earthing point 10.
  • the third laminar element 8 develops substantially parallel to the first laminar element 5, thus creating a structure similar to a double-wire line.
  • the irregular line is a mixed line.
  • the first laminar element 5 comprises a section 15 that is substantially filiform with an enlarged terminal area 16 having a recess 17 facing the second laminar element 6.
  • said recess 17 defines an obtuse angle ⁇ .
  • the second laminar element 6 comprises a lateral projecting area 18 facing the filiform section 15 of the first laminar element 5, and a terminal projecting area 19 facing the recess 17 of the terminal area 16 of the first laminar element 5.
  • the third laminar element 8 comprises a substantially filiform section 20 and an enlarged terminal area 21.
  • the enlargement of some parts of the laminar elements 5, 6 and 8 makes it possible to enlarge the frequency bands in which the corresponding transceiver units 3 and 4 are capable of transmitting and receiving, thus allowing the vehicular multiband antenna 1 that is the subject of the invention to be compatible with all the transmitting and receiving standards of mobile telephony at the same time.
  • the shape of the laminar elements 5, 6 and 8, generating the irregular line that delimits their perimeters 12a, 13a, 14a, makes it possible to modify the electromagnetic interactions between the laminar elements 5, 6 and 8 to carry out an impedance adaptation process.
  • the typical impedance for transmitting and receiving radio-frequency signals for mobile telephony is 50 Ohm, while air impedance is almost 370 Ohm, so that in order to obtain the best transmitting and receiving results an adaptation between the two impedance values is necessary.
  • the third laminar element 8 is spaced from the first laminar element 5 by a section 22 having irregular thickness, in which the portion 22a that separates the third laminar element 8 from the enlarged terminal area 16 of the first laminar element 5 is substantially L-shaped and is thinner than the remaining portion 22b of said section 22 having irregular thickness.
  • the shape of the third laminar element 8 as well as the section with irregular thickness 22 that separates it from the first laminar element 5, advantageously facilitate the desired impedance adaptation.
  • the third laminar element 8 interacts with the second laminar element 6 in order to achieve for it, too, the necessary impedance adaptation.
  • the vehicular multiband antenna 1 that is the subject of the invention also comprises a plurality of shaped areas 25 , represented in Figure 5 , electrically conductive and independent of one another, arranged on the surface 26 of the dielectric support 2 opposite the surface 7 on which the laminar elements 5, 6 and 8 are positioned, in order to obtain a plurality of capacitive couplings with the laminar elements 5, 6 and 8 .
  • said shaped areas 25 therefore, advantageously facilitate the desired impedance adaptation mentioned above.
  • the first laminar element 5 is longer than the second laminar element 6 , so that it is possible to transmit and receive radio-frequency signals on different bands.
  • the third laminar element 8 defines a concave area 11 to which the first and the second laminar elements 5 and 6 are applied.
  • the vehicular multiband antenna for mobile telephony that is the subject of the invention achieves all the set aims.
  • the invention also achieves the aim to carry out a vehicular multiband antenna to transmit and receive radio-frequency signals for all the mobile telephony standards that has the same overall dimensions as the known antennas and suited to transmit and receive signals for some standards only.
EP06123830A 2005-11-11 2006-11-10 Mehrband-Fahrzeugantenne für den Mobilfunk Withdrawn EP1793449A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000300A ITVI20050300A1 (it) 2005-11-11 2005-11-11 Antenna multibanda veicolare per la telefonia mobile

Publications (1)

Publication Number Publication Date
EP1793449A1 true EP1793449A1 (de) 2007-06-06

Family

ID=36940080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06123830A Withdrawn EP1793449A1 (de) 2005-11-11 2006-11-10 Mehrband-Fahrzeugantenne für den Mobilfunk

Country Status (2)

Country Link
EP (1) EP1793449A1 (de)
IT (1) ITVI20050300A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014204494A1 (en) * 2013-06-21 2014-12-24 Laird Technologies, Inc. Multiband mimo vehicular antenna assemblies
WO2015124463A1 (de) * 2014-02-18 2015-08-27 Antennentechnik Bad Blankenburg Gmbh Mehrbereichsantenne für eine empfangs- und/oder sendeeinrichtung für den mobilen einsatz
WO2017089435A1 (en) * 2015-11-27 2017-06-01 Agc Glass Europe A two bidimensional multiband antenna and a glazing panel with the antenna printed thereon
CN107464989A (zh) * 2017-08-09 2017-12-12 广东盛路通信科技股份有限公司 车载4g刀型天线
CN108832314A (zh) * 2018-06-05 2018-11-16 浙江大学 一种新型低剖面高增益车载天线

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998048473A1 (en) * 1997-04-23 1998-10-29 Qualcomm Incorporated A coupler for a multi-frequency antenna
DE20009402U1 (de) * 2000-02-25 2000-10-05 Fuba Automotive Gmbh Antennenmodul
EP1291967A1 (de) * 2001-02-26 2003-03-12 Nippon Antena Kabushiki Kaisha Mehrfrequenzantenne
EP1337004A2 (de) * 2002-02-19 2003-08-20 Harada Industries (Europe) Limited Integriertes Fahrzeugantennensystem mit wählbarer Einspeisleitungspositionierung
WO2004001898A1 (en) * 2002-06-21 2003-12-31 Research In Motion Limited Multiple-element antenna with parasitic coupler
US20040027287A1 (en) * 2000-02-22 2004-02-12 Kengo Onaka Multi-resonance antenna
WO2004025778A1 (en) * 2002-09-10 2004-03-25 Fractus, S.A. Coupled multiband antennas

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998048473A1 (en) * 1997-04-23 1998-10-29 Qualcomm Incorporated A coupler for a multi-frequency antenna
US20040027287A1 (en) * 2000-02-22 2004-02-12 Kengo Onaka Multi-resonance antenna
DE20009402U1 (de) * 2000-02-25 2000-10-05 Fuba Automotive Gmbh Antennenmodul
EP1291967A1 (de) * 2001-02-26 2003-03-12 Nippon Antena Kabushiki Kaisha Mehrfrequenzantenne
EP1337004A2 (de) * 2002-02-19 2003-08-20 Harada Industries (Europe) Limited Integriertes Fahrzeugantennensystem mit wählbarer Einspeisleitungspositionierung
WO2004001898A1 (en) * 2002-06-21 2003-12-31 Research In Motion Limited Multiple-element antenna with parasitic coupler
WO2004025778A1 (en) * 2002-09-10 2004-03-25 Fractus, S.A. Coupled multiband antennas

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014204494A1 (en) * 2013-06-21 2014-12-24 Laird Technologies, Inc. Multiband mimo vehicular antenna assemblies
US9793602B2 (en) 2013-06-21 2017-10-17 Laird Technologies, Inc. Multiband MIMO vehicular antenna assemblies
WO2015124463A1 (de) * 2014-02-18 2015-08-27 Antennentechnik Bad Blankenburg Gmbh Mehrbereichsantenne für eine empfangs- und/oder sendeeinrichtung für den mobilen einsatz
WO2017089435A1 (en) * 2015-11-27 2017-06-01 Agc Glass Europe A two bidimensional multiband antenna and a glazing panel with the antenna printed thereon
CN108463921A (zh) * 2015-11-27 2018-08-28 旭硝子欧洲玻璃公司 双二维多频带天线以及其上印刷有天线的嵌装玻璃面板
JP2018537037A (ja) * 2015-11-27 2018-12-13 エージーシー グラス ユーロップＡｇｃ Ｇｌａｓｓ Ｅｕｒｏｐｅ ２つの２次元部品で構成される多帯域アンテナおよびそのアンテナが印刷されたガラスパネル
US10594016B2 (en) 2015-11-27 2020-03-17 Agc Glass Europe Two bidimensional multiband antenna and a glazing panel with the antenna printed thereon
EA037445B1 (ru) * 2015-11-27 2021-03-29 Агк Гласс Юроп Состоящая из двух двумерных частей многополосная антенна и панель остекления с напечатанной на ней антенной
CN107464989A (zh) * 2017-08-09 2017-12-12 广东盛路通信科技股份有限公司 车载4g刀型天线
CN108832314A (zh) * 2018-06-05 2018-11-16 浙江大学 一种新型低剖面高增益车载天线
CN108832314B (zh) * 2018-06-05 2020-06-05 浙江大学 一种新型低剖面高增益车载天线

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