EP0406564A3 - Rod antenna for two frequency ranges - Google Patents

Rod antenna for two frequency ranges Download PDF

Info

Publication number
EP0406564A3
EP0406564A3 EP19900110326 EP90110326A EP0406564A3 EP 0406564 A3 EP0406564 A3 EP 0406564A3 EP 19900110326 EP19900110326 EP 19900110326 EP 90110326 A EP90110326 A EP 90110326A EP 0406564 A3 EP0406564 A3 EP 0406564A3
Authority
EP
European Patent Office
Prior art keywords
rod
antenna
lambda
rod antenna
entire length
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
EP19900110326
Other languages
German (de)
Other versions
EP0406564A2 (en
EP0406564B1 (en
Inventor
Horst Doerrie
Uwe Dipl.-Ing. Militz
Heinrich Dipl.-Ing. Wilken
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
Priority claimed from DE3922042A external-priority patent/DE3922042A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0406564A2 publication Critical patent/EP0406564A2/en
Publication of EP0406564A3 publication Critical patent/EP0406564A3/en
Application granted granted Critical
Publication of EP0406564B1 publication Critical patent/EP0406564B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • 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

Abstract

2.1 The invention is based on the object of developing a known rod antenna, which consists of a thin rod and a tube surrounding the central region of the rod in an insulating manner, in such a manner that the antenna requires no foot which has to be connected to earth and such that it has an approximately uniform thickness over its entire length. 2.2 The solution of the object consists of a 3/2 lambda long rod (11) which consists of a dielectric material, containing a coaxial inner conductor (12) which extends over the entire length of the rod. The rod (11) is surrounded in its central lambda /2 long region by a conductive coating (13). lambda in this case means the average operating wavelength of the higher frequency range. 2.3 A preferred field of application for the rod antenna is a vehicle antenna, which is suitable for radio traffic and for broadcast reception. 3. The drawing shows a view of a rod antenna. <IMAGE>
EP90110326A 1989-07-05 1990-05-31 Rod antenna for two frequency ranges Expired - Lifetime EP0406564B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3922042A DE3922042A1 (en) 1989-06-19 1989-07-05 Radio antenna whip for dual frequency operation - uses three section coaxial construction with modified central section
DE3922042 1989-07-05

Publications (3)

Publication Number Publication Date
EP0406564A2 EP0406564A2 (en) 1991-01-09
EP0406564A3 true EP0406564A3 (en) 1991-09-25
EP0406564B1 EP0406564B1 (en) 1994-11-30

Family

ID=6384315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90110326A Expired - Lifetime EP0406564B1 (en) 1989-07-05 1990-05-31 Rod antenna for two frequency ranges

Country Status (5)

Country Link
EP (1) EP0406564B1 (en)
JP (1) JP3171843B2 (en)
AT (1) ATE114876T1 (en)
DE (1) DE59007811D1 (en)
DK (1) DK0406564T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE507640C2 (en) 1992-03-19 1998-06-29 Telia Ab Device for antenna arrangement
US6756552B2 (en) 2001-02-23 2004-06-29 Agilent Technologies, Inc. Multi-pole conductive liquid-based switch device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1547136A (en) * 1978-02-07 1979-06-06 Marconi Co Ltd Radio antennae
GB2030778A (en) * 1978-09-22 1980-04-10 Shakespeare Co Multiple band multiple resonant frequency antenna
US4491850A (en) * 1981-07-20 1985-01-01 David Cutler Antenna formed of series of metallic and non-metallic conductive sections

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1547136A (en) * 1978-02-07 1979-06-06 Marconi Co Ltd Radio antennae
GB2030778A (en) * 1978-09-22 1980-04-10 Shakespeare Co Multiple band multiple resonant frequency antenna
US4491850A (en) * 1981-07-20 1985-01-01 David Cutler Antenna formed of series of metallic and non-metallic conductive sections

Also Published As

Publication number Publication date
EP0406564A2 (en) 1991-01-09
JP3171843B2 (en) 2001-06-04
DE59007811D1 (en) 1995-01-12
ATE114876T1 (en) 1994-12-15
EP0406564B1 (en) 1994-11-30
DK0406564T3 (en) 1995-05-01
JPH0344101A (en) 1991-02-26

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