EP0048788A1 - Antenne tige, en particulier pour recevoir des fréquences de radiodiffusion très élevées - Google Patents

Antenne tige, en particulier pour recevoir des fréquences de radiodiffusion très élevées Download PDF

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Publication number
EP0048788A1
EP0048788A1 EP81102262A EP81102262A EP0048788A1 EP 0048788 A1 EP0048788 A1 EP 0048788A1 EP 81102262 A EP81102262 A EP 81102262A EP 81102262 A EP81102262 A EP 81102262A EP 0048788 A1 EP0048788 A1 EP 0048788A1
Authority
EP
European Patent Office
Prior art keywords
rod
antenna according
rod antenna
length
windings
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Withdrawn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
EP81102262A
Other languages
German (de)
English (en)
Inventor
Horst Dörrie
Kurt Klinkwitz
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0048788A1 publication Critical patent/EP0048788A1/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Withdrawn legal-status Critical Current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
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical 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

  • the invention is based on a rod antenna according to the preamble of the main claim.
  • a rod antenna is already known (US Pat. No. 2,938,210) which has an insulating rod which tapers towards the upper end of the antenna and which bears a helical wire winding over almost its entire length.
  • the winding end at the upper end of the rod is passed through the rod and electrically connected to a sleeve-shaped connecting piece arranged on the lower end of the rod.
  • the rod and wire winding are surrounded by a tubular plastic covering.
  • Such a rod antenna usually has a length of about one meter if it is to be used as an FM receiving antenna. If this antenna is to be used as a vehicle antenna, it is desirable to shorten the antenna length as much as possible, for example to 40 centimeters. In this case, however, such an antenna has a loss of approximately 14 to 20 dB in the FM range compared to a simple rod antenna of approximately 95 centimeters in length.
  • the rod antenna according to the invention with the characterizing features of the main claim has the advantage that, as a comparison of the directional diagrams and the frequency spectra of the simple rod antenna and the rod antenna according to the invention shows, the performance of both antennas can be regarded as approximately equivalent. As a rule, there is even no need for an amplifier, which would otherwise be used with shortened rod antennas and which leads to a relatively high noise component.
  • a rod antenna is particularly advantageous, in which the elongated wire length of the windings located on the two longitudinal parts of the rod is each about a quarter of the mean wavelength X. Under this condition, the rod antenna according to the invention has an optimal reception performance.
  • a rod antenna according to the invention has an insulating rod 10, for example made of glass fiber, which tapers conically towards the upper end of the antenna and has two wire windings 11, 12 wound in opposite directions over a length 1, which corresponds to almost the entire length of the rod.
  • the windings 11, 12 are produced by bifilar winding of a wire which is subsequently secured by adhesive or lacquer.
  • the length parts a, b correspond approximately to half the length of the total winding length 1.
  • the winding length 1 of the rod antenna corresponds to approximately one eighth of the medium wavelength, that is to say approximately 40 cm for a rod antenna for the FM radio range.
  • the wire of the wire windings 11 and 12 each has an elongated length of about a quarter of the middle wavelength.
  • the lower winding 12 ends at a distance c from the lower end of the insulating rod 10.
  • a connecting piece 14 is fastened with its sleeve-shaped extension 15; see. Fig. 2.
  • the free end 16 of the lower winding 12 is electrically conductively connected to the sleeve-shaped part 15.
  • the windings 11 and 12, the insulating rod 10 and the sleeve-shaped part 15 of the connector 14 are jointly surrounded by an elastic protective layer 17, which is formed, for example, from a heat-shrinking plastic tube
  • the connecting piece 14 is used to fasten the rod antenna to a foot piece which is omitted in the drawing for the sake of clarity and which, for example, belongs to a body of a motor vehicle and is connected to a motor vehicle receiver via a cable.
  • the rod antenna according to the invention is provided with an elastic intermediate piece 20 at its lower end; see. Fig. 3.
  • the elastic intermediate piece contains a coil spring 21, one end of which is plugged into a pin-shaped extension 22 at the free end of the connector 14 and the other end onto a pin-shaped extension 23 of a further connector 24.
  • the connecting piece 14, the helical spring 21 and the further connecting piece 24 are surrounded by a highly elastic layer 25, which is produced, for example, by pressing using a polyvinyl chloride material.
  • the further connector 24 has a connector 26 which is not covered by the highly elastic layer 25 and forms the electrical connection of the rod antenna.
  • a protective cap 27 is located on the upper end of the rod antenna.

Landscapes

  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
EP81102262A 1980-09-25 1981-03-26 Antenne tige, en particulier pour recevoir des fréquences de radiodiffusion très élevées Withdrawn EP0048788A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3036084 1980-09-25
DE19803036084 DE3036084A1 (de) 1980-09-25 1980-09-25 Stabantenne, insbesondere fuer ukw-rundfunkempfang

Publications (1)

Publication Number Publication Date
EP0048788A1 true EP0048788A1 (fr) 1982-04-07

Family

ID=6112782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102262A Withdrawn EP0048788A1 (fr) 1980-09-25 1981-03-26 Antenne tige, en particulier pour recevoir des fréquences de radiodiffusion très élevées

Country Status (4)

Country Link
US (1) US4375642A (fr)
EP (1) EP0048788A1 (fr)
JP (1) JPS5787205A (fr)
DE (1) DE3036084A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374371A1 (fr) * 1988-12-20 1990-06-27 Robert Bosch Gmbh Antenne en tige pour la réception de télévision
FR2695257A1 (fr) * 1992-12-17 1994-03-04 Pizon Ernest Antenne.
WO1996036087A1 (fr) * 1995-05-09 1996-11-14 Robert Bosch Gmbh Procede de production d'une antenne helicoidale et antenne helicoidale obtenue a l'aide dudit procede
WO1996036089A1 (fr) * 1995-05-09 1996-11-14 Robert Bosch Gmbh Procede de production d'une antenne baton
WO2009156001A1 (fr) * 2008-06-26 2009-12-30 Robert Bosch Gmbh Antenne tige
CN108553045A (zh) * 2018-03-30 2018-09-21 魏磊 一种自动拖把

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60174308U (ja) * 1984-04-25 1985-11-19 株式会社ヨコオ フレキシブルアンテナのエレメント
JPS60180112U (ja) * 1984-05-08 1985-11-29 株式会社　バンダイ アンテナ装置
JPS617108U (ja) * 1984-06-19 1986-01-17 株式会社ケンウッド フレキシブルアンテナ
US4725395A (en) * 1985-01-07 1988-02-16 Motorola, Inc. Antenna and method of manufacturing an antenna
DE3919884C2 (de) * 1989-06-19 1994-05-19 Bosch Gmbh Robert Stabförmige Funkantenne
JP2559074B2 (ja) * 1990-04-27 1996-11-27 株式会社クリエイティックジャパン アンテナ素子
FR2694137B1 (fr) * 1992-07-21 1994-11-25 Ernest Pizon Antenne.
JP3089933B2 (ja) * 1993-11-18 2000-09-18 三菱電機株式会社 アンテナ装置
WO1996002075A1 (fr) * 1994-07-08 1996-01-25 R.A. Miller Industries, Inc. Systeme combine d'antenne de telephone cellulaire am/fm
US5489916A (en) * 1994-08-26 1996-02-06 Westinghouse Electric Corp. Helical antenna having adjustable beam angle
US5668564A (en) * 1996-02-20 1997-09-16 R.A. Miller Industries, Inc. Combined AM/FM/cellular telephone antenna system
US5751251A (en) * 1996-03-20 1998-05-12 Hutchinson; Ronald M. Automotive mobile telephone antenna silencer
EP0997970B1 (fr) * 1997-01-28 2007-09-12 Yokowo Co., Ltd. Antenne a installer sur un vehicule, element d'antenne, et procede de fabrication
FR2764123B1 (fr) * 1997-05-30 1999-07-30 Tramec Antenne rigide et procede de fabrication correspondant
GB2331630B (en) * 1997-11-20 2001-12-05 Nec Technologies Retractable antenna for a mobile telephone
US5943026A (en) * 1997-11-20 1999-08-24 The Whitaker Corporation Boot assembly for an antenna
US6297784B1 (en) * 1998-11-02 2001-10-02 Auden Techno Corp. Bi-frequency cellular telephone antenna
DE19941501C1 (de) * 1999-08-31 2001-06-28 Bosch Gmbh Robert Biegsamer Antennenstrahler
KR100350866B1 (ko) * 2000-10-18 2002-09-05 삼성전자 주식회사 이동통신 단말기의 헬리컬 안테나 구조
US8339265B2 (en) 2002-01-09 2012-12-25 Sensormatic Electronics, Llc. Method of assigning and deducing the location of articles detected by multiple RFID antennae
US7084769B2 (en) * 2002-01-09 2006-08-01 Vue Technology, Inc. Intelligent station using multiple RF antennae and inventory control system and method incorporating same
US7656858B2 (en) * 2005-03-03 2010-02-02 Sensormatic Electronics, Llc. Apparatus for and method of using an intelligent network and RFID signal router
WO2006114270A1 (fr) * 2005-04-26 2006-11-02 Hirschmann Car Communication Gmbh Baguette d'antenne a tige interne gainee, dotee d'un enroulement et recouverte d'une gaine externe
DE102006006923A1 (de) * 2005-10-18 2007-04-19 Hirschmann Car Communication Gmbh Antennenrute für eine Antenne mit Glasfaserstab, der eine Ausnehmung aufweist
US8316156B2 (en) * 2006-02-17 2012-11-20 Intel-Ne, Inc. Method and apparatus for interfacing device drivers to single multi-function adapter
KR100821981B1 (ko) * 2007-02-02 2008-04-15 이성철 무지향성 안테나
DE102007038074A1 (de) * 2007-08-11 2009-02-12 Hirschmann Car Communication Gmbh Stabantenne mit Außenummantelungsbereichen aus unterschiedlichen Kunststoffen
WO2020081061A1 (fr) * 2018-10-16 2020-04-23 Science Applications International Corporation Système et procédé de protection d'une antenne contre des objets physiques brouilleurs

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938210A (en) * 1957-09-30 1960-05-24 Edward F Harris Process of fabricating a whip antenna
US2966679A (en) * 1957-11-13 1960-12-27 Edward F Harris Unloaded helical antenna
DE1254203B (de) * 1961-06-09 1967-11-16 Sumitomo Electric Industries Wendelantenne
US3383695A (en) * 1965-12-22 1968-05-14 Navy Usa Helical antenna with end distortion to improve polarization purity
DE7316414U (de) * 1973-09-13 Bosch R Elektronik Gmbh Antenne fur ein in ein Fahrzeug ein gebautes Rundfunkgerat
DE2357542A1 (de) * 1973-11-17 1975-05-22 Bosch Elektronik Gmbh Antenne mit einem biegsamen antennenstab aus einer selbsttragenden schraubenfeder und einer die schraubenfeder umgebenden elastischen schicht
DE2727900A1 (de) * 1976-06-21 1977-12-29 Nat Res Dev Funk- und rundfunk-antenne
DE7916011U1 (de) * 1979-06-02 1979-09-13 Robert Bosch Gmbh, 7000 Stuttgart Antenne mit einem biegsamen stab aus isolierstoff
US4214247A (en) * 1978-10-13 1980-07-22 Avnet, Incorporated Tunable fiberglass whip antenna

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249945A (en) * 1962-07-05 1966-05-03 Prodelin Inc Tunable whip antenna with combined loading coil and shock spring
US4101898A (en) * 1976-07-26 1978-07-18 David Lee Ingram Base fed, top-loaded vertical whip antenna

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7316414U (de) * 1973-09-13 Bosch R Elektronik Gmbh Antenne fur ein in ein Fahrzeug ein gebautes Rundfunkgerat
US2938210A (en) * 1957-09-30 1960-05-24 Edward F Harris Process of fabricating a whip antenna
US2966679A (en) * 1957-11-13 1960-12-27 Edward F Harris Unloaded helical antenna
DE1254203B (de) * 1961-06-09 1967-11-16 Sumitomo Electric Industries Wendelantenne
US3383695A (en) * 1965-12-22 1968-05-14 Navy Usa Helical antenna with end distortion to improve polarization purity
DE2357542A1 (de) * 1973-11-17 1975-05-22 Bosch Elektronik Gmbh Antenne mit einem biegsamen antennenstab aus einer selbsttragenden schraubenfeder und einer die schraubenfeder umgebenden elastischen schicht
DE2727900A1 (de) * 1976-06-21 1977-12-29 Nat Res Dev Funk- und rundfunk-antenne
US4214247A (en) * 1978-10-13 1980-07-22 Avnet, Incorporated Tunable fiberglass whip antenna
DE7916011U1 (de) * 1979-06-02 1979-09-13 Robert Bosch Gmbh, 7000 Stuttgart Antenne mit einem biegsamen stab aus isolierstoff

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374371A1 (fr) * 1988-12-20 1990-06-27 Robert Bosch Gmbh Antenne en tige pour la réception de télévision
FR2695257A1 (fr) * 1992-12-17 1994-03-04 Pizon Ernest Antenne.
WO1996036087A1 (fr) * 1995-05-09 1996-11-14 Robert Bosch Gmbh Procede de production d'une antenne helicoidale et antenne helicoidale obtenue a l'aide dudit procede
WO1996036089A1 (fr) * 1995-05-09 1996-11-14 Robert Bosch Gmbh Procede de production d'une antenne baton
WO2009156001A1 (fr) * 2008-06-26 2009-12-30 Robert Bosch Gmbh Antenne tige
CN108553045A (zh) * 2018-03-30 2018-09-21 魏磊 一种自动拖把

Also Published As

Publication number Publication date
DE3036084A1 (de) 1982-04-29
JPS5787205A (en) 1982-05-31
US4375642A (en) 1983-03-01

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Legal Events

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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 CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19820909

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: 19850404

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KLINKWITZ, KURT

Inventor name: DOERRIE, HORST