HK83896A - Omnidirectional antenna particularly for the transmission of radio or television signals in the decimetric-wave range and radiation system formed by an arrangement of these antennas - Google Patents

Omnidirectional antenna particularly for the transmission of radio or television signals in the decimetric-wave range and radiation system formed by an arrangement of these antennas

Info

Publication number
HK83896A
HK83896A HK83896A HK83896A HK83896A HK 83896 A HK83896 A HK 83896A HK 83896 A HK83896 A HK 83896A HK 83896 A HK83896 A HK 83896A HK 83896 A HK83896 A HK 83896A
Authority
HK
Hong Kong
Prior art keywords
antennas
antenna
decimetric
radio
transmission
Prior art date
Application number
HK83896A
Inventor
Maurice Loiseau
Guy Bastard
Original Assignee
Thomcast
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 Thomcast filed Critical Thomcast
Publication of HK83896A publication Critical patent/HK83896A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Aerials With Secondary Devices (AREA)
  • Transmitters (AREA)

Abstract

This antenna, in particular intended for the transmission of radio or television signals in the decimetric-wave range, comprises: - a vertical, central support tube (100), - a plurality of identical radiating arrays (200), preferably three in number, uniformly distributed around the central tube and each formed from a vertical bifilar line (210, 210') supporting, coupling and supplying in a symmetrical manner, a plurality of horizontal dipoles (220, 220') uniformly distributed along this bifilar line, and - an equipower, equiphase power distribution system, preferably housed entirely inside the central support tube, identically and simultaneously supplying the three radiating arrays from a single coaxial supply line. The antenna lacks a reflector, this significantly reducing its weight and its wind resistance relative to conventional panel antennas generally used in this range. Advantageously, these antennas are superimposed and enclosed in a sealed, essentially cylindrical, self-supporting and superimposable radome. This antenna achieves an omnidirectional pattern at 0.9 dB between 460 and 860 MHz, and can radiate 5 to 7 kW per antenna element. <IMAGE>
HK83896A 1988-07-22 1996-05-09 Omnidirectional antenna particularly for the transmission of radio or television signals in the decimetric-wave range and radiation system formed by an arrangement of these antennas HK83896A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8809940A FR2634598B1 (en) 1988-07-22 1988-07-22 AN OMNIDIRECTIONAL ANTENNA, IN PARTICULAR FOR THE TRANSMISSION OF BROADCASTING OR TELEVISION SIGNALS IN THE UHF BAND, AND RADIATION SYSTEM IN THE FORM OF A GROUPING OF THESE ANTENNAS

Publications (1)

Publication Number Publication Date
HK83896A true HK83896A (en) 1996-05-17

Family

ID=9368690

Family Applications (1)

Application Number Title Priority Date Filing Date
HK83896A HK83896A (en) 1988-07-22 1996-05-09 Omnidirectional antenna particularly for the transmission of radio or television signals in the decimetric-wave range and radiation system formed by an arrangement of these antennas

Country Status (8)

Country Link
EP (1) EP0352160B1 (en)
JP (1) JPH0269004A (en)
AT (1) ATE107436T1 (en)
CA (1) CA1324657C (en)
DE (1) DE68916121T2 (en)
ES (1) ES2054055T3 (en)
FR (1) FR2634598B1 (en)
HK (1) HK83896A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2721757B1 (en) * 1994-06-28 1996-09-13 Jac International Omnidirectional antenna in azimuth and directive on site and maritime responder thus equipped.
US5861858A (en) * 1997-06-30 1999-01-19 Harris Corporation Antenna feed and support system
DE10316787A1 (en) * 2003-04-11 2004-11-11 Kathrein-Werke Kg Reflector, especially for a cellular antenna
DE10316786A1 (en) 2003-04-11 2004-11-18 Kathrein-Werke Kg Reflector, especially for a cellular antenna
DE20319983U1 (en) * 2003-12-23 2004-08-19 Kathrein-Werke Kg Lightning protection for antenna systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE421257A (en) * 1936-04-28
DE1183976B (en) * 1961-10-24 1964-12-23 Telefunken Patent Antenna arrangement, consisting of stacked omnidirectional groups
DE2026984C3 (en) * 1970-05-27 1980-10-02 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Antenna with several radiators on a support part oriented essentially vertically
FR2518321A1 (en) * 1981-12-15 1983-06-17 Thomson Csf RADIANT ASSEMBLY WITH TWO SUPERPOSED ANTENNAS WORKING IN THE SAME RANGE OF FREQUENCIES

Also Published As

Publication number Publication date
DE68916121D1 (en) 1994-07-21
FR2634598B1 (en) 1990-10-05
EP0352160A1 (en) 1990-01-24
ATE107436T1 (en) 1994-07-15
DE68916121T2 (en) 1994-09-29
ES2054055T3 (en) 1994-08-01
EP0352160B1 (en) 1994-06-15
FR2634598A1 (en) 1990-01-26
JPH0269004A (en) 1990-03-08
CA1324657C (en) 1993-11-23

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)