EP0403741A2 - Antenne fouet - Google Patents

Antenne fouet Download PDF

Info

Publication number
EP0403741A2
EP0403741A2 EP19900105964 EP90105964A EP0403741A2 EP 0403741 A2 EP0403741 A2 EP 0403741A2 EP 19900105964 EP19900105964 EP 19900105964 EP 90105964 A EP90105964 A EP 90105964A EP 0403741 A2 EP0403741 A2 EP 0403741A2
Authority
EP
European Patent Office
Prior art keywords
coil
rod
radio antenna
shaped radio
antenna according
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.)
Granted
Application number
EP19900105964
Other languages
German (de)
English (en)
Other versions
EP0403741A3 (fr
EP0403741B1 (fr
Inventor
Horst Dörrie
Uwe Dipl.-Ing. Militz
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 EP0403741A2 publication Critical patent/EP0403741A2/fr
Publication of EP0403741A3 publication Critical patent/EP0403741A3/fr
Application granted granted Critical
Publication of EP0403741B1 publication Critical patent/EP0403741B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01Q9/32—Vertical arrangement of element

Definitions

  • the invention is based on a rod-shaped radio antenna according to the preamble of claim 1.
  • Such a rod-shaped radio antenna is known, which, however, has the disadvantage, in the case of mounting deviating from the vertical, that its all-round characteristic is no longer circular, but that it has strong drops of up to 30 dB.
  • the invention has for its object to develop a rod-shaped radio antenna according to the preamble of claim 1 in such a way that a gain antenna is formed which also has a circular antenna characteristic that is as uniform as possible even at an inclination angle of up to 40 ° with respect to the vertical.
  • a preferred area of application for the invention is a radio antenna for the radio network C of the Irish Bundespost, that is to say for a frequency range from 450 to 470 MHz.
  • 10 means a rod-shaped radio antenna with a flexible, electrically conductive spring element 11, which is preferably a plated-through coil spring.
  • the spring element is connected at one end to an elastic rod 12 made of dielectric material.
  • the elastic rod 12 carries a first coil SP1, which is electrically connected to the flexible spring element 11.
  • a first length L1 of the radio antenna 10 comprises the flexible spring element 11 and the first coil SP1.
  • the second coil SP2 is followed by a third coil SP3 within the second length L2, which is wound in the opposite manner to the second coil SP2 and is wound back and has a third length L3.
  • a fourth coil SP4 is connected to the third coil SP3, which is wound parallel to the second coil SP2 and in the same direction as this and also has a length L3.
  • the coils SP2 to SP4 are preferably wound from an uninterrupted piece of wire.
  • radiator part 13 which, for example, consists of a braid pushed onto the rod 12 and has a length L4.
  • the average operating wavelength of the radio range in question is designated by ⁇ .
  • a conductive lacquer layer or a tubular film preferably a copper film, can optionally be used.
  • FIG. 3 shows the arrangement of the rod-shaped radio antenna 10 on a roof 14, for example for a motor vehicle body.
  • the radio antenna 10 is preferably detachably connected in a foot piece 15 firmly connected to the roof.
  • the angle ⁇ of the radio antenna 10 with respect to the vertical is preferably 0 to 40 °.
EP90105964A 1989-06-19 1990-03-29 Antenne fouet Expired - Lifetime EP0403741B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3919884A DE3919884C2 (de) 1989-06-19 1989-06-19 Stabförmige Funkantenne
DE3919884 1989-06-19

Publications (3)

Publication Number Publication Date
EP0403741A2 true EP0403741A2 (fr) 1990-12-27
EP0403741A3 EP0403741A3 (fr) 1991-05-29
EP0403741B1 EP0403741B1 (fr) 1994-06-01

Family

ID=6382985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105964A Expired - Lifetime EP0403741B1 (fr) 1989-06-19 1990-03-29 Antenne fouet

Country Status (5)

Country Link
US (1) US5061942A (fr)
EP (1) EP0403741B1 (fr)
AT (1) ATE106612T1 (fr)
DE (2) DE3919884C2 (fr)
DK (1) DK0403741T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5359340A (en) * 1992-09-30 1994-10-25 Fujitsu Limited Helical antenna for portable radio communication equipment
SG46259A1 (en) * 1993-01-29 1998-02-20 Motorola Inc Antenna assembly for radio circuit and method thereof
DE202005008338U1 (de) * 2005-05-24 2005-12-22 Fuba Automotive Gmbh & Co. Kg Antennenkonfiguration für den Rundfunkempfang in Kfz
RU2755589C1 (ru) * 2020-03-23 2021-09-17 Федеральное государственное казенное военное образовательное учреждение высшего образования "Военная академия войсковой противовоздушной обороны Вооруженных Сил Российской Федерации имени Маршала Советского Союза А.М. Василевского" Министерства обороны Российской Федерации Синфазная прямолинейная штыревая УКВ антенная решётка

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE864710C (de) * 1951-08-21 1953-01-26 Sihn Kg Wilhelm Jun Biegsame Stabantenne, insbesondere fuer Fahrzeuge
FR2001420A1 (fr) * 1968-02-06 1969-09-26 Ohkubo Yoshie Preparation d'une antenne pour rendre electroconductrice une tige souple isolante
US3541554A (en) * 1967-10-09 1970-11-17 Coil Research L Tunable whip antenna
DE2257352A1 (de) * 1972-11-22 1974-05-30 Kathrein Werke Kg Fahrzeugantenne
US4375642A (en) * 1980-09-25 1983-03-01 Robert Bosch Gmbh Rod antenna, particularly for mobile FM signal transducing applications
DE8622412U1 (fr) * 1986-08-21 1986-11-20 Hummel, Peter, 7012 Fellbach, De

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097867A (en) * 1975-09-23 1978-06-27 James Joseph Eroncig Helical antenna encased in fiberglass body
US4101898A (en) * 1976-07-26 1978-07-18 David Lee Ingram Base fed, top-loaded vertical whip antenna
US4161737A (en) * 1977-10-03 1979-07-17 Albright Eugene A Helical antenna
US4163981A (en) * 1978-03-27 1979-08-07 Wilson Thomas J Spring tunable helical whip antenna
US4490727A (en) * 1979-10-18 1984-12-25 Mobile Mark, Inc. Adjustable top loaded antenna
US4404564A (en) * 1980-01-09 1983-09-13 Wilson George P Attachment for antennas to improve reception and transmission
US4675687A (en) * 1986-01-22 1987-06-23 General Motors Corporation AM-FM cellular telephone multiband antenna for motor vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE864710C (de) * 1951-08-21 1953-01-26 Sihn Kg Wilhelm Jun Biegsame Stabantenne, insbesondere fuer Fahrzeuge
US3541554A (en) * 1967-10-09 1970-11-17 Coil Research L Tunable whip antenna
FR2001420A1 (fr) * 1968-02-06 1969-09-26 Ohkubo Yoshie Preparation d'une antenne pour rendre electroconductrice une tige souple isolante
DE2257352A1 (de) * 1972-11-22 1974-05-30 Kathrein Werke Kg Fahrzeugantenne
US4375642A (en) * 1980-09-25 1983-03-01 Robert Bosch Gmbh Rod antenna, particularly for mobile FM signal transducing applications
DE8622412U1 (fr) * 1986-08-21 1986-11-20 Hummel, Peter, 7012 Fellbach, De

Also Published As

Publication number Publication date
US5061942A (en) 1991-10-29
DK0403741T3 (da) 1994-09-19
DE3919884C2 (de) 1994-05-19
ATE106612T1 (de) 1994-06-15
EP0403741A3 (fr) 1991-05-29
DE59005882D1 (de) 1994-07-07
EP0403741B1 (fr) 1994-06-01
DE3919884A1 (de) 1990-12-20

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