EP0040674A1 - Antenne fouet - Google Patents

Antenne fouet Download PDF

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Publication number
EP0040674A1
EP0040674A1 EP81101847A EP81101847A EP0040674A1 EP 0040674 A1 EP0040674 A1 EP 0040674A1 EP 81101847 A EP81101847 A EP 81101847A EP 81101847 A EP81101847 A EP 81101847A EP 0040674 A1 EP0040674 A1 EP 0040674A1
Authority
EP
European Patent Office
Prior art keywords
rod
carbon
reinforced plastic
plastic
fiber reinforced
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Withdrawn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
EP81101847A
Other languages
German (de)
English (en)
Inventor
Hans Dr. Eisenmann
Josef Kronast
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.)
Kathrein SE
Original Assignee
Kathrein Werke 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
Application filed by Kathrein Werke KG filed Critical Kathrein Werke KG
Publication of EP0040674A1 publication Critical patent/EP0040674A1/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Withdrawn legal-status Critical Current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
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
    • H01Q1/368—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor using carbon or carbon composite
    • 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
    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole

Definitions

  • Motor vehicle rod antennas are said to be relatively stiff in order to keep bending caused by the wind and vibrations when cornering to a minimum.
  • the object of the invention is to provide a rod antenna with a plastic rod that can be contacted in a simpler manner than conventional rod antennas this type.
  • the rod is reinforced over substantially its entire length, at least on its outer surface, with carbon threads embedded approximately parallel to one another in the plastic.
  • the carbon threads not only reinforce the rod mechanically, but also form the electrically active conductor of the rod antenna.
  • Such a rod can be contacted on its surface, which is possible in a relatively simple manner, for example with the aid of a sleeve or the like.
  • the rod is mechanically extremely strong and light, so that it tends very little to undesirable mechanical vibrations.
  • Rod antenna also offers advantages over conventional rod antennas with a glass fiber reinforced plastic rod.
  • Rod antennas become wider, the smaller their slenderness is, i. H. the thicker the rod is in relation to its length.
  • Rods made of carbon fiber reinforced plastics have a greater electrically effective thickness than conventional glass fiber reinforced rods, the electrically effective conductor of which consists only of a relatively thin strand inside the rod.
  • the rod should be tapered towards the free end, on the one hand to reduce its weight and on the other hand to reduce its area exposed to the wind.
  • the shape can easily be achieved by conically grinding the carbon-thread-reinforced outer surface of the rod.
  • the easiest way to make the rod is to use carbon-fiber reinforced plastic. To reduce costs, however, it can also have a core made of glass fiber reinforced plastic and can be coated with a layer of carbon fiber reinforced plastic.
  • the carbon content in the regions of the rod reinforced with carbon threads should be at least 50% by weight of the Total weight of these areas.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Details Of Aerials (AREA)
  • Elimination Of Static Electricity (AREA)
EP81101847A 1980-05-27 1981-03-12 Antenne fouet Withdrawn EP0040674A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3020063 1980-05-27
DE19803020063 DE3020063A1 (de) 1980-05-27 1980-05-27 Stabantenne

Publications (1)

Publication Number Publication Date
EP0040674A1 true EP0040674A1 (fr) 1981-12-02

Family

ID=6103333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101847A Withdrawn EP0040674A1 (fr) 1980-05-27 1981-03-12 Antenne fouet

Country Status (3)

Country Link
EP (1) EP0040674A1 (fr)
DE (1) DE3020063A1 (fr)
DK (1) DK231281A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591807A1 (fr) * 1985-12-18 1987-06-19 Eurofarad Antenne dielectrique
WO1991003847A1 (fr) * 1989-08-29 1991-03-21 Hughes Aircraft Company Structures composites en graphite a conductivite electrique
FR2660116A1 (fr) * 1990-03-26 1991-09-27 Facon Antenne de reception des ondes radio-electriques.
EP0777297A1 (fr) * 1995-11-28 1997-06-04 Top Glass S.p.A. Antenne fouet
WO2006075186A1 (fr) * 2005-01-17 2006-07-20 Antenova Limited Antennes purement dielectriques et dispositifs associes

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001358B (de) * 1953-02-28 1957-01-24 Blaupunkt Werke Gmbh Biegsame Antenne
US3287732A (en) * 1963-11-15 1966-11-22 New Tronics Division Of Automa Radio antenna construction
FR2001420A1 (fr) * 1968-02-06 1969-09-26 Ohkubo Yoshie Preparation d'une antenne pour rendre electroconductrice une tige souple isolante
US3541567A (en) * 1967-09-25 1970-11-17 Richard J Francis Multielement radio-frequency antenna structure having linearly arranged elements
FR2312864A1 (fr) * 1975-05-29 1976-12-24 Etud Rech Chimique Lab Antenne radio-electrique composite, specialement antenne d'emission
US4134120A (en) * 1976-10-12 1979-01-09 Coastal Engineered Products Company, Inc. Whip antenna formed of electrically conductive graphite strands embedded in a resin material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001358B (de) * 1953-02-28 1957-01-24 Blaupunkt Werke Gmbh Biegsame Antenne
US3287732A (en) * 1963-11-15 1966-11-22 New Tronics Division Of Automa Radio antenna construction
US3541567A (en) * 1967-09-25 1970-11-17 Richard J Francis Multielement radio-frequency antenna structure having linearly arranged elements
FR2001420A1 (fr) * 1968-02-06 1969-09-26 Ohkubo Yoshie Preparation d'une antenne pour rendre electroconductrice une tige souple isolante
FR2312864A1 (fr) * 1975-05-29 1976-12-24 Etud Rech Chimique Lab Antenne radio-electrique composite, specialement antenne d'emission
US4134120A (en) * 1976-10-12 1979-01-09 Coastal Engineered Products Company, Inc. Whip antenna formed of electrically conductive graphite strands embedded in a resin material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591807A1 (fr) * 1985-12-18 1987-06-19 Eurofarad Antenne dielectrique
WO1991003847A1 (fr) * 1989-08-29 1991-03-21 Hughes Aircraft Company Structures composites en graphite a conductivite electrique
FR2660116A1 (fr) * 1990-03-26 1991-09-27 Facon Antenne de reception des ondes radio-electriques.
EP0777297A1 (fr) * 1995-11-28 1997-06-04 Top Glass S.p.A. Antenne fouet
WO2006075186A1 (fr) * 2005-01-17 2006-07-20 Antenova Limited Antennes purement dielectriques et dispositifs associes

Also Published As

Publication number Publication date
DE3020063A1 (de) 1981-12-03
DK231281A (da) 1981-11-28

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19821106

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KRONAST, JOSEF

Inventor name: EISENMANN, HANS, DR.