EP0492022A1 - Breitbandige Funkantenne mit kleinem Stehwellenverhältnis - Google Patents

Breitbandige Funkantenne mit kleinem Stehwellenverhältnis Download PDF

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Publication number
EP0492022A1
EP0492022A1 EP90403773A EP90403773A EP0492022A1 EP 0492022 A1 EP0492022 A1 EP 0492022A1 EP 90403773 A EP90403773 A EP 90403773A EP 90403773 A EP90403773 A EP 90403773A EP 0492022 A1 EP0492022 A1 EP 0492022A1
Authority
EP
European Patent Office
Prior art keywords
antenna
linear
hand
length
transmission line
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
EP90403773A
Other languages
English (en)
French (fr)
Other versions
EP0492022B1 (de
Inventor
Yves Foissac
Jean Marie Demangel
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.)
Laboratoire D'etudes Et De Recherches Chimiques Lerc Sa
Original Assignee
Laboratoire D'etudes Et De Recherches Chimiques Lerc Sa
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 Laboratoire D'etudes Et De Recherches Chimiques Lerc Sa filed Critical Laboratoire D'etudes Et De Recherches Chimiques Lerc Sa
Priority to DE1990616446 priority Critical patent/DE69016446T2/de
Publication of EP0492022A1 publication Critical patent/EP0492022A1/de
Application granted granted Critical
Publication of EP0492022B1 publication Critical patent/EP0492022B1/de
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
    • H01Q9/44—Resonant antennas with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions
    • 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
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching

Definitions

  • the invention relates to a very wide band radio antenna with a low standing wave rate.
  • the invention relates to an antenna having, on the one hand, a low standing wave rate especially in the high frequency range, that is to say mainly between 3 and 30 megahertz and on the other hand a good yield on the aforementioned strip.
  • the antenna of the invention is particularly intended for mobile communication services which use high frequencies as communication frequencies.
  • antennas which are, on the one hand, light and easy to implement, that is to say essentially of small size and, on the other hand, radioelectrically efficient, c 'is to say whose standing wave rate is as low as possible considering a high efficiency.
  • the width of the frequency band in which these communication devices operate is implicitly limited to that in which the antenna can be used without drawbacks.
  • the antenna comprises a plurality of linear conductive elements, of different chosen lengths and which, on the one hand, are arranged parallel to the head of a slender support while being electrically isolated from each other and, on the other hand , have one of their ends electrically connected to a common line.
  • an antenna of this type has given excellent results in a range of frequencies between 30 and 88 megahertz.
  • the length of a monopole antenna that is to say of an antenna made up of a conductive linear element generally corresponds to a quarter of the wavelength at its lowest frequency of use of the antenna.
  • one of the linear elements of the antenna according to the above solution should have a length of 18.2 meters which is completely incompatible with the use that l 'We have considered for the antenna object of this application.
  • a result which the invention aims to obtain is a very broadband antenna which has good efficiency as well as a low standing wave rate while being of use compatible with a mobile communication device.
  • an antenna 1 is seen connected by an electrical transmission line 2 to a radio communication device 3 such as a transmitter and / or a receiver.
  • the antenna 1 conventionally comprises several linear elements 4 conductors of electricity and these elements 4 are each electrically connected to the transmission line 2 by one 40 of their ends 40, 41, which end is after said "base".
  • the antenna is studied to present a low standing wave rate and in particular a standing wave rate less than or equal to five in a very wide frequency band which extends from 3 to 30 megahertz.
  • the standing wave rate characterizes the propensity of the antennas to reflect through the transmission line the electrical energy which is applied to them via this line by a transmitting device.
  • the antenna of the invention also has an efficiency which varies significantly from 10% at the lowest frequency to 25% at the highest frequency.
  • the efficiency of an antenna characterizes its ability to disperse the effective electrical energy it has accepted from the transmitter into effective electromagnetic energy, taking into account its standing wave rate.
  • the angle A is between zero and thirty degrees inclusive.
  • the resistive means 5 have from one linear element to another all substantially the same Rchoisie value.
  • each linear element comprises a resistant means 5 and this is located substantially at a third of the length of the element measured from its end 40 called the base which is associated with the line 2.
  • each linear element comprises two resistant means 5 and these means are located approximately one third to two thirds, the other one third to the length of the element measured from its end called base 40.
  • each linear element comprises a resistant means 5 and this is located at substantially two thirds of the length of the element measured from its end 40 called the base which is associated with the line 2.
  • the antenna comprises three divergent linear elements 1 situated in planes radially oriented around the median axis 42 of the antenna and offset between them by approximately 120 degrees.
  • each linear element forms an angle A of approximately 18 ° with the median axis 42 of the antenna.
  • the median axis of the antenna will advantageously be oriented vertically and the antenna will in turn be oriented so that its elements diverge towards the sky.
  • the antenna makes it possible to obtain the expected results.
  • each inductive means 5 is at least in the immediate vicinity of the base 40 of a linear element 4.
  • the inductive means may consist of a winding of conductive wire directly produced on the support of the linear element (which support has not been shown any more than the winding).

Landscapes

  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP90403773A 1988-05-16 1990-12-26 Breitbandige Funkantenne mit kleinem Stehwellenverhältnis Expired - Lifetime EP0492022B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1990616446 DE69016446T2 (de) 1990-12-26 1990-12-26 Breitbandige Funkantenne mit kleinem Stehwellenverhältnis.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8806899A FR2650441B1 (fr) 1988-05-16 1988-05-16 Antenne radioelectrique a tres large bande et a faible taux d'onde stationnaire
CA002033621A CA2033621C (fr) 1988-05-16 1991-01-04 Antenne radio electrique a tres large bande et a faible taux d'onde stationnaire

Publications (2)

Publication Number Publication Date
EP0492022A1 true EP0492022A1 (de) 1992-07-01
EP0492022B1 EP0492022B1 (de) 1995-01-25

Family

ID=25674429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90403773A Expired - Lifetime EP0492022B1 (de) 1988-05-16 1990-12-26 Breitbandige Funkantenne mit kleinem Stehwellenverhältnis

Country Status (3)

Country Link
EP (1) EP0492022B1 (de)
CA (1) CA2033621C (de)
FR (1) FR2650441B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0825675A2 (de) * 1996-08-19 1998-02-25 EMC Test Systems, L.P. Dipolantenne mit geformtem breitbandigem Element
WO2002091519A1 (en) * 2001-05-08 2002-11-14 Northrop Grumman Corporation Radiator components that serve to transmit information over frequencies in range with one or more octaves less than or equal to thirty megahertz
WO2013026943A1 (es) * 2011-08-22 2013-02-28 Garcia Camacho Juan Carlos Antena portatil de tdt
ES2534951A1 (es) * 2015-02-11 2015-04-30 Juan Carlos GARCÍA CAMACHO Antena portátil de TDT
EP3972053A4 (de) * 2019-06-13 2022-05-25 Mitsubishi Electric Corporation Antennenvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB529152A (en) * 1938-05-24 1940-11-14 Telefunken Gmbh Improvements in or relating to radio aerial arrangements
GB685236A (en) * 1950-09-04 1952-12-31 G S V Marine & Commercial Ltd Improvements in and relating to aerials and their construction
DE3046255A1 (de) * 1979-12-09 1981-10-08 David Kiryat Chaim Grimberg Breitband-antenne kleiner abmessungen fuer das radiofrequenzband

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB529152A (en) * 1938-05-24 1940-11-14 Telefunken Gmbh Improvements in or relating to radio aerial arrangements
GB685236A (en) * 1950-09-04 1952-12-31 G S V Marine & Commercial Ltd Improvements in and relating to aerials and their construction
DE3046255A1 (de) * 1979-12-09 1981-10-08 David Kiryat Chaim Grimberg Breitband-antenne kleiner abmessungen fuer das radiofrequenzband

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0825675A2 (de) * 1996-08-19 1998-02-25 EMC Test Systems, L.P. Dipolantenne mit geformtem breitbandigem Element
EP0825675A3 (de) * 1996-08-19 2000-04-05 EMC Test Systems, L.P. Dipolantenne mit geformtem breitbandigem Element
WO2002091519A1 (en) * 2001-05-08 2002-11-14 Northrop Grumman Corporation Radiator components that serve to transmit information over frequencies in range with one or more octaves less than or equal to thirty megahertz
US6570544B2 (en) 2001-05-08 2003-05-27 Litton Systems, Inc. Radiator components that serve to transmit information over frequencies in range with one or more octaves less than or equal to thirty megahertz and that comprise major dimension less than or equal to nine meters
GB2392783A (en) * 2001-05-08 2004-03-10 Northrop Grumman Corp Radiator components that serve to transmit information over frequencies in range with one or more octaves less than or equal to thirty megahertz
GB2392783B (en) * 2001-05-08 2005-12-14 Northrop Grumman Corp Broadband antenna system
WO2013026943A1 (es) * 2011-08-22 2013-02-28 Garcia Camacho Juan Carlos Antena portatil de tdt
ES2534951A1 (es) * 2015-02-11 2015-04-30 Juan Carlos GARCÍA CAMACHO Antena portátil de TDT
WO2016128599A1 (es) * 2015-02-11 2016-08-18 Garcia Camacho Juan Carlos Antena portátil de tdt
EP3972053A4 (de) * 2019-06-13 2022-05-25 Mitsubishi Electric Corporation Antennenvorrichtung

Also Published As

Publication number Publication date
FR2650441B1 (fr) 1991-11-29
EP0492022B1 (de) 1995-01-25
CA2033621A1 (fr) 1992-07-05
CA2033621C (fr) 1994-09-13
FR2650441A1 (fr) 1991-02-01

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