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WO1992010865A1 - Bases d'antenne isolees - Google Patents

Bases d'antenne isolees Download PDF

Info

Publication number
WO1992010865A1
WO1992010865A1 PCT/GB1991/001875 GB9101875W WO9210865A1 WO 1992010865 A1 WO1992010865 A1 WO 1992010865A1 GB 9101875 W GB9101875 W GB 9101875W WO 9210865 A1 WO9210865 A1 WO 9210865A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
vehicle
base
metal
integral
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.)
Ceased
Application number
PCT/GB1991/001875
Other languages
English (en)
Inventor
Leslie James Wallen
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.)
LES WALLEN MANUFACTURING Ltd
Original Assignee
LES WALLEN MANUFACTURING Ltd
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 GB9026466A external-priority patent/GB2250637A/en
Application filed by LES WALLEN MANUFACTURING Ltd filed Critical LES WALLEN MANUFACTURING Ltd
Publication of WO1992010865A1 publication Critical patent/WO1992010865A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H01Q1/1285—Supports; Mounting means for mounting on windscreens with capacitive feeding through the windscreen
    • 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

  • This invention is a range of antenna bases, integral to the antenna, using the same technical principle.
  • the vehicle When a mobile communication antenna is fitted to a vehicle, the vehicle normally becomes a part of the antenna circuit and this part of the antenna circuit is called the groundplane.
  • the antenna base is fitted by drilling a hole and the car is connected to the antenna circuit by way of the mechanical structure of the antenna base itself.
  • this has presented a number of problems, two of the most significant of these are: first, that it may not be practical to drill a hole in the car - second, that if the vehicle has an insulated return electrical system and is used in the petro-chemical industry to carry volatile liquids or explosives, or it has a highly sophisticated, computerised electrical system, the connecting of the antenna earth could make it dangerous, becoming a serious fire risk or causing a malfunction in the computer with serious probable consequences.
  • the present invention overcomes both of these problems, because it does not require a hole to be drilled and it does not connect the antenna earth to the vehicle directly, but capacitively.
  • Figure 1 the antenna base is shown in cross-section attached to the vehicle panel or bodywork, irrespective of the location.
  • the coaxial cable 8 which connects the transmitter/ receiver to the antenna is terminated within the antenna base body moulding section 4.
  • the antenna earth or return which is the screened part of the cable is
  • the centre 3 or hot part of the antenna cable 2 is connected to 1 where any suitable antenna can be affixed.
  • the connecting of the antenna earth or braid side of the coaxial cable to plate 5 could be magnetic, providing dielectric 6 is a suitable material and the vehicle surface 9 is of a ferrous material, thus allowing a magnetic flux with 5.
  • Plate 6 could be of any alternative suitable material offering itself as a capacitor plate, providing dielectric 6 is also adhesive on both sides.
  • the radio signal When the radio signal is induced into the antenna base, it is connected to the antenna affixed to 1 and to the vehicle capacitively through plate 5 and dielectric 6, due to the alternating current of the radio signal, but at no time will the vehicle be directly connected to the antenna earth.
  • the cable 8 will also be of sufficiently small diameter to practically run through extremities of the vehicle without causing problems, i.e. doors, boot lid, hatch back, door etc.

Landscapes

  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

Base d'antenne intégrée à l'antenne et présentant un couplage capacitif avec la carrosserie ou un panneau d'un vehicule métallique ou d'un matériau de remplacement, par n'importe quel procédé approprié consistant à utiliser un diélectrique ou un matériau d'une perméabilité appropriée. L'antenne est ainsi connectée à la terre, ce qui permet à un courant alternatif de la traverser sous forme d'une radiofréquence, mais ne permet pas à un courant direct de passer, de sorte que l'antenne est isolée. Le couplage capacitif et l'isolation par rapport au courant direct sont effectués par la base elle-même, de sorte qu'aucune autre structure n'est requise entre la base et le vehicule sur lequel elle est montée.
PCT/GB1991/001875 1990-12-05 1991-10-25 Bases d'antenne isolees Ceased WO1992010865A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9026466.4 1990-12-05
GB9026466A GB2250637A (en) 1990-12-05 1990-12-05 Isolated antenna bases
GB9113933A GB2250639A (en) 1990-12-05 1991-06-26 Isolated antenna bases
GB9113933.7 1991-06-26

Publications (1)

Publication Number Publication Date
WO1992010865A1 true WO1992010865A1 (fr) 1992-06-25

Family

ID=26298063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001875 Ceased WO1992010865A1 (fr) 1990-12-05 1991-10-25 Bases d'antenne isolees

Country Status (4)

Country Link
EP (1) EP0515590A1 (fr)
AU (1) AU8749791A (fr)
DE (1) DE9116508U1 (fr)
WO (1) WO1992010865A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0605766A1 (fr) * 1992-12-31 1994-07-13 Richard Hirschmann GmbH & Co. Antenne de véhicule pour hautes fréquences
EP0710998A3 (fr) * 1994-11-04 1996-09-18 Daimler Benz Ag Antenne de véhicule
EP0817306A3 (fr) * 1996-06-19 1999-04-28 Ford Motor Company Limited Antennes de véhicule
EP1064692A1 (fr) * 1998-03-19 2001-01-03 Smarteq AB Dispositif d'antenne pourvu d'un organe de fixation magnetique et d'un organe de couplage de mise a la terre pouvant fonctionner a des frequences multiples
GB2489802A (en) * 2011-04-07 2012-10-10 Imagination Tech Ltd A vehicle DAB antenna with through window signal coupling and a capacitive ground coupler

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080603A (en) * 1976-07-12 1978-03-21 Howard Belmont Moody Transmitting and receiving loop antenna with reactive loading
US4184160A (en) * 1978-03-15 1980-01-15 Affronti Victor A Antenna roof mount for vehicles
GB2028592A (en) * 1978-08-19 1980-03-05 Sony Corp Car antennae
FR2553584A1 (fr) * 1983-10-13 1985-04-19 Applic Rech Electronique Antenne demi-boucle pour vehicule terrestre
US4658259A (en) * 1985-03-06 1987-04-14 Blaese Herbert R On-glass antenna
US4764773A (en) * 1985-07-30 1988-08-16 Larsen Electronics, Inc. Mobile antenna and through-the-glass impedance matched feed system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080603A (en) * 1976-07-12 1978-03-21 Howard Belmont Moody Transmitting and receiving loop antenna with reactive loading
US4184160A (en) * 1978-03-15 1980-01-15 Affronti Victor A Antenna roof mount for vehicles
GB2028592A (en) * 1978-08-19 1980-03-05 Sony Corp Car antennae
FR2553584A1 (fr) * 1983-10-13 1985-04-19 Applic Rech Electronique Antenne demi-boucle pour vehicule terrestre
US4658259A (en) * 1985-03-06 1987-04-14 Blaese Herbert R On-glass antenna
US4764773A (en) * 1985-07-30 1988-08-16 Larsen Electronics, Inc. Mobile antenna and through-the-glass impedance matched feed system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0605766A1 (fr) * 1992-12-31 1994-07-13 Richard Hirschmann GmbH & Co. Antenne de véhicule pour hautes fréquences
EP0710998A3 (fr) * 1994-11-04 1996-09-18 Daimler Benz Ag Antenne de véhicule
EP0817306A3 (fr) * 1996-06-19 1999-04-28 Ford Motor Company Limited Antennes de véhicule
EP1064692A1 (fr) * 1998-03-19 2001-01-03 Smarteq AB Dispositif d'antenne pourvu d'un organe de fixation magnetique et d'un organe de couplage de mise a la terre pouvant fonctionner a des frequences multiples
GB2489802A (en) * 2011-04-07 2012-10-10 Imagination Tech Ltd A vehicle DAB antenna with through window signal coupling and a capacitive ground coupler

Also Published As

Publication number Publication date
DE9116508U1 (de) 1992-12-24
EP0515590A1 (fr) 1992-12-02
AU8749791A (en) 1992-07-08

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