EP0819323A1 - Antenne - Google Patents

Antenne

Info

Publication number
EP0819323A1
EP0819323A1 EP96907222A EP96907222A EP0819323A1 EP 0819323 A1 EP0819323 A1 EP 0819323A1 EP 96907222 A EP96907222 A EP 96907222A EP 96907222 A EP96907222 A EP 96907222A EP 0819323 A1 EP0819323 A1 EP 0819323A1
Authority
EP
European Patent Office
Prior art keywords
antenna
rod
core
conductive
filaments
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Withdrawn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
EP96907222A
Other languages
German (de)
English (en)
Other versions
EP0819323A4 (fr
Inventor
Robert Lenes Matthews
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.)
Individual
Original Assignee
Individual
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 AUPN2179A external-priority patent/AUPN217995A0/en
Priority claimed from AUPN8194A external-priority patent/AUPN819496A0/en
Application filed by Individual filed Critical Individual
Publication of EP0819323A1 publication Critical patent/EP0819323A1/fr
Publication of EP0819323A4 publication Critical patent/EP0819323A4/fr
Withdrawn legal-status Critical Current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
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/085—Flexible aerials; Whip aerials with a resilient base
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/10—Telescopic elements
    • 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
    • H01Q1/20—Resilient mountings
    • 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
    • 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

Definitions

  • This invention relates to a rod antenna, in particular to a continuous solid rod whip antenna and in particular to a rod of selected stiffness and flexibility which may be extended or retracted and stored in a relatively small space. It further relates to a tubular member useful for flexible storage of such a rod antenna.
  • Telescopic and rod antennas are known.
  • the telescopic types of antenna have the disadvantage that they are complex to make and tend to be fragile.
  • Both telescopic and rod antennas can be extended either by hand or using a motor.
  • Some known rod antennas are roof-mounted and column-feed of the type designed to be manually retracted.
  • whip antennas of the type which are externally fixed to the window column or roof and or other areas of the vehicle which are not raised or lowered manually.
  • Solid rod metal antennas have disadvantages in that they are of excessive weight, are lacking in flexibility and distort permanently when kinked or bent. This distortion
  • SUBSTrTUTE SHEET (RULE 26) prevents manual raising or lowering. In addition, if the solid metal antenna catches on an external object, permanent damage to the vehicle may occur.
  • Both telescopic and rod antennas suffer from the difficulty that the telescopic section or the solid rod is likely to deform permanently upon collision forming an obstacle preventing the antenna from retracting.
  • this invention provides a rod antenna which comprises a solid core selected from the group consisting of conductive and non-conductive cores overlaid by a filament-based element wrapped around the core at an angle to a line notionally drawn longitudinally along the core.
  • this invention provides a rod antenna which comprises a solid core selected from the group consisting of longitudinally arranged metallised non-metallic fibres and longitudinally arranged metal fibres.
  • this invention provides a rod of selected stiffness and flexibility which may be extended or retracted and stored in a relatively small space, wherein the
  • the bending radius as measured by the survivable bend has a bend diameter (D) to antenna diameter (d) ratio of from 80 to 120 together with inherent built-in memory to allow the rod to return to the original straight position when released.
  • this invention provides a tubular member useful for flexible storage of a rod antenna, which comprises a relatively flexible cylindrical housing provided with at least two anchoring means for attachment of the housing to a vehicle body.
  • Figure 1 is a partial cross-section view of a roof-mounted, column-feed, manually retractable antenna
  • Figures 1 (a), 1(b) and 1(c) are details of the antenna of Figure 1.
  • Figures 2 and 3 are side views of a retracted antenna in a housing
  • Figure 4 is a side view of the retracted antenna of Figures 2 and 3 showing the position of a motorised erecting and retracting unit;
  • Figure 5 repeats the side view of Figure 2 but shows the retracted antenna in a housing inside that structure of a car adjacent its boot;
  • Figures 6(a) and 6(b) are side-views (perpendicular to each other) illustrating alternative motorised erecting and retracting units for use with the antenna of Figures 2 and 3; and
  • Figure 7 illustrates a modification of the antenna of Figures 2 and 3, in particular a modified cylindrical housing.
  • filament-based element is braiding which involves interweaving groups of filaments.
  • the groups of filaments are generally flat with filaments laid in parallel.
  • a first series of groups is interwoven with a second series of groups, one series being generally at right angles to the others.
  • Interweaving involves generally laying one group over and under corresponding groups at right angles.
  • the braid may be laid around the core at a suitable angle selected from 5 degrees to 75 degrees to a line notionally drawn longitudinally along the core.
  • the angle is preferably 40 degrees to 50 degrees.
  • filament winding may be used. Thus filaments are wound one over the other around the core but are not interlocked.
  • tapes or sheets of filaments may be wound around the core.
  • the tapes or sheets of conductive filaments may be woven.
  • a prewoven sock of filaments may be pulled over a core.
  • a heat-shrink sleeving comprising a conductive plastics material may be placed aiound a non-conductive core and then shrunk to produce an electrically conductive rod.
  • the solid core is preferably a polymeric material which is associated with or impregnated with a sttengthening material such as fibreglass or carbon fibres.
  • electrical conductivity is on the surface of the rod antenna.
  • Surface conductivity may be provided using carbon fibres, metal or metallised fibres.
  • the metallised fibres may be, for example, nickel-plates, silver-plates or aluminium.
  • the fibres themselves may be, for example, fibreglass.
  • Metal fibres may be, for example, stainless steel, copper, or aluminium.
  • the solid core is preferably formed by pultrusion, which is a process in which continuous strands of fibrous reinforcing materials are pulled through a resin bath, a heated die. a pulling station and finally a cut-off unit.
  • Carbon fibres, metallised fibres or metal fibres may be pultruded over a suitable core, or fibreglass.
  • Such fibres may be oriented in the longitudinal direction or may be braided to provide the desired modulus, strength and flexibility.
  • the modulus of the fibres is selected according to their elecu ⁇ cal conductivity and desired flexibility.
  • the resin matrix may comprise a polyester or polyesters, a vinyl ester or esters or thermoset resin blends. Conductivity may be enhanced by the addition of conductive particles such as graphite flakes and/or powder, nickel or silver-plated carbon particles, for example, into the resin matrix.
  • pultrusion method is prefe ⁇ ed, it is possible to use for example, a method combining pultrusion with braiding.
  • suitable means of producing rods for antennas include injection moulding and extrusion using chopped fibres and or particles of the type described above.
  • rod refers to elongated objects of various cross- sections including round, square and rectangular.
  • the tensile strength of the rod at three standard deviations below the mean exceeds 1200 MPa when tested according to modified ASTM D - 3916.
  • the tensile modulus at three standard deviations below the mean exceeds 50 GPa when tested according to ASTM D - 3916.
  • the elongation at break is less than 3%.
  • mounting shear splintering does not progress further than 30mm on a standard mounting shear splintering apparatus.
  • the rod should have inherent memory to return to its approximate stfaight position when fully extended. It is necessary to balance flexure and stiffness of the rod to ensure that the rod can maintain its memory to return to its original shape and be inserted into a space or tunnel having a selected shape.
  • the material or materials from which the rod is made may be metallic, non-metallic or a combination of both.
  • the metallic material may be entirely of metal or metal coated with chromium or may be of metallised fibres.
  • the non-metallic material may be carbon fibre, carbon mesh or carbon powder.
  • Non ⁇ conducting fibre, such as glass fibre, may be used to form a foundation or core for the rod.
  • Pultrusion may be used in the construction of the non-metallic rod or metal fibres or metallised fibres.
  • Conductive particles, such as metal particles, may be used to improve conductivity.
  • rods according to the invention provide reduced wind noise.
  • the antenna housing and rod can be installed to any suitable location on a motor vehicle including windscreen pillars, roof, the front or rear fenders and/or boot.
  • the antenna length may be extended to provide further reception range.
  • the antenna according to the invention may be housed within a tube within a vehicle.
  • This tube of selected stiffness may be left in a continuous straight length, bent into a selected shape or rolled up.
  • This invention also provides a rigid metal tube or pipe with an ele ⁇ rical insulated coating on the outer surface of the metal tube such as polyvinyl chloride, nylon, polypropylene or other suitable plastics material.
  • the metal tube can be stainless steel, copper or a number of suitable electrically conductive metals capable of being pre-fo ⁇ ned to a given shape.
  • SUBSTTI UTE SHEET (RULE 26)
  • the tube can be preformed or bent into any desirable shape to suit the motor vehicle chassis and the various vehicle panels. This will facilitate ease of installation and consistency to ensure all antennas are fitted in precisely the same manner during motor vehicle building and installation of the antenna
  • the antenna signal and co-axial cable can be connected to any point of the metal tube or at either end and not )ust at one end only as is the case with current forms of antennas
  • an antenna rod 1 1 is capped by a top 12 and ends in a stop collar 13.
  • Numeral 1 1 A indicates a solid core which is overlaid by a filament - based element.
  • a fixing anchor 14 fixes cylindrical housing 1 1 through base mould 15.
  • Numeral 16 refers to a cylindrical housing, for example, of a suitable non-conductive plastics material, around antenna rod 1 1 which provides a guide
  • Numeral 17 refers to a coaxial cable to a radio.
  • Figure 2 relates to a manually-operated antenna and comprises an antenna rod 21. which is capped by a top 22 and ends in an antenna rod end stop 23 A locking nut 24 receives base mount 25 and connects flexible cylindrical housing 26 to vehicle panel 27.
  • numeral 28 refers to a feeder cable
  • Figure 4 relates to a power-driven antenna, in which numeral 29 refers to an electric motor for advancing oi retracting antenna rod 21 Note that this motor is mounted away from the antenna mount, providing a space advantage
  • numeral 30 refers to a vehicle as a whole, numeral 27 refeiring to a panel of a part of the vehicle 30.
  • antenna rod 21 may be stored in a boot of vehicle 30.
  • the antenna could be power-driven.
  • numeral 31 refers to rollers driven by friction-device motor 29 to advance or retract antenna rod 21.
  • numeral 40 refers to a metal tube coated with a suitable non- conductive plastics material such as nylon or poly vinyl chloride and number 41 re'ers to an alternative connection point for a feeder cable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Details Of Aerials (AREA)

Abstract

L'invention concerne une antenne rigide (11) comportant un noyau plein (11A) choisi dans le groupe constitué des noyaux conducteurs et non conducteurs, recouvert par un élément à base filamentaire enroulé autour dudit noyau en biais par rapport à une ligne fictive tracée longitudinalement le long de ce dernier.
EP96907222A 1995-04-06 1996-04-01 Antenne Withdrawn EP0819323A4 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AUPN2179A AUPN217995A0 (en) 1995-04-06 1995-04-06 Antenna
AUPN2179/95 1995-04-06
AUPN8194A AUPN819496A0 (en) 1996-02-21 1996-02-21 Retractable antenna
AUPN8194/96 1996-02-21
PCT/AU1996/000185 WO1996031917A1 (fr) 1995-04-06 1996-04-01 Antenne

Publications (2)

Publication Number Publication Date
EP0819323A1 true EP0819323A1 (fr) 1998-01-21
EP0819323A4 EP0819323A4 (fr) 1998-07-08

Family

ID=25644897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96907222A Withdrawn EP0819323A4 (fr) 1995-04-06 1996-04-01 Antenne

Country Status (5)

Country Link
EP (1) EP0819323A4 (fr)
JP (1) JPH11503281A (fr)
KR (1) KR19980703653A (fr)
CN (1) CN1185863A (fr)
WO (1) WO1996031917A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980038391A (ko) 1996-11-26 1998-08-05 이형도 로드 및 루프 공용안테나를 구비한 발신전용전화기
KR100357970B1 (ko) * 2001-10-05 2002-10-25 주식회사 에스비텔콤 통신기기의 안테나와 그 외관의 코팅방법
KR100357969B1 (ko) * 2001-10-08 2002-10-25 주식회사 에스비텔콤 통신기기의 안테나 노브와 코팅방법
US20040266344A1 (en) * 2003-06-27 2004-12-30 Imtiaz Zafar Integrated AM/FM mast with single SDARS antenna
CN102064376A (zh) * 2009-11-16 2011-05-18 英业达股份有限公司 可挠式天线结构及应用其的手持装置
DE102012221189A1 (de) * 2012-11-20 2014-05-22 Gabler Maschinenbau Gmbh Antennenvorrichtung für ein Unterseeboot
KR101438520B1 (ko) * 2013-07-10 2014-09-12 대구대학교 산학협력단 경량의 주파수 변이 브레이드 안테나
CN103531881B (zh) * 2013-10-23 2015-11-04 福建星海通信科技有限公司 新型鞭状天线及其制作方法
BR112018077186A2 (pt) * 2016-06-29 2019-06-04 Hirschmann Car Comm Gmbh processo para produção de uma antena de vareta

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274012A (en) * 1940-07-24 1942-02-24 Gen Motors Corp Antenna
FR1087641A (fr) * 1953-11-19 1955-02-25 Antenne radio pour automobiles
GB801200A (en) * 1955-07-14 1958-09-10 Columbia Products Co Improvements in or relating to a self-supporting aerial
US3287732A (en) * 1963-11-15 1966-11-22 New Tronics Division Of Automa Radio antenna construction
US4447816A (en) * 1981-11-25 1984-05-08 Rca Corporation Stiffening clamp for self-erecting antenna
US4494123A (en) * 1983-07-16 1985-01-15 Motorola, Inc. Self-erecting composite antenna structure
GB2156592A (en) * 1984-03-29 1985-10-09 Ask Manufacturing Limited Elastic electrically conductive components and radio antennas incorporating such components
GB2221097B (en) * 1988-06-24 1992-11-25 Nippon Antenna Kk Automotive antenna
JPH03110901A (ja) * 1989-09-26 1991-05-10 Mitsubishi Electric Corp アンテナ装置
DE4221707C2 (de) * 1992-07-02 1995-11-02 Daimler Benz Ag Versenkbare Antenne mit einem einteiligen Körper

Also Published As

Publication number Publication date
EP0819323A4 (fr) 1998-07-08
JPH11503281A (ja) 1999-03-23
KR19980703653A (ko) 1998-12-05
WO1996031917A1 (fr) 1996-10-10
CN1185863A (zh) 1998-06-24
MX9707667A (es) 1998-08-30

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