EP1385231A1 - Gruppenantenne - Google Patents

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Publication number
EP1385231A1
EP1385231A1 EP03024914A EP03024914A EP1385231A1 EP 1385231 A1 EP1385231 A1 EP 1385231A1 EP 03024914 A EP03024914 A EP 03024914A EP 03024914 A EP03024914 A EP 03024914A EP 1385231 A1 EP1385231 A1 EP 1385231A1
Authority
EP
European Patent Office
Prior art keywords
antenna elements
antenna
antenna array
housing
extending
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Withdrawn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
EP03024914A
Other languages
English (en)
French (fr)
Inventor
Darrell W. Miller
Paul C. Gilliland
Joseph E. Wheeler
Leslie D. Clements
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Priority claimed from EP97116712A external-priority patent/EP0833404A3/de
Publication of EP1385231A1 publication Critical patent/EP1385231A1/de
Withdrawn legal-status Critical Current

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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
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H01Q21/12—Parallel arrangements of substantially straight elongated conductive units
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/04—Non-resonant antennas, e.g. travelling-wave antenna with parts bent, folded, shaped, screened or electrically loaded to obtain desired phase relation of radiation from selected sections of the antenna
    • 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
    • H01Q21/061—Two dimensional planar arrays
    • 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
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/062—Two dimensional planar arrays using dipole aerials
    • 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
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/067—Two dimensional planar arrays using endfire radiating aerial units transverse to the plane of the array
    • 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
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • 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
    • 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

  • This invention relates to an antenna array for use in conjunction with personal communication systems (PCS) and, more specifically, to a compact antenna for use in conjunction with mobile communication systems.
  • PCS personal communication systems
  • the prior art has generally used patch and dipole antennas in a flat or "billboard” style with the “billboard” plane being vertical for this purpose with the antenna elements extending outwardly horizontally or parallel to the ground to provide the proper pattern for these types of antenna elements.
  • Such antenna arrays generally have dimensions of about 3 feet by about 5 feet or more to obtain the required gain.
  • the antenna array in accordance with the present invention utilizes a plurality of endfire monopole antenna elements which transmit energy in a direction normal to their major axis.
  • the antenna array has a low cross section, low profile package with the area being used vertical or tube-like as opposed to the billboard shape and patch or dipole arrays of the prior art.
  • the monopole antenna elements are stacked in a plurality of planes above and below each other rather than being all in one plane as in the prior art and preferably extend upwardly and/or downwardly in a direction generally normal to the ground though the antenna array will operate, but less efficiently, as long as a major component of the major axes of the antenna elements is normal to the ground.
  • the radome housing the array is aerodynamically shaped on one or more sides in order to minimize wind resistance.
  • the antenna array includes an RF transparent housing having a tapered end portion which is preferably substantially "V" shaped, a first plurality of parallel endfire monopole antenna elements preferably secured to a stripline or microstrip within the housing, each antenna element of the second plurality extending in the first direction, the first plurality being spaced from the second plurality extending in the first direction, the first plurality being spaced from the second plurality in the first direction.
  • An energy feeding structure in the form of the stripline or microstrip is coupled to the antenna elements, with a dielectric layer disposed over that feeding structure and a ground plane disposed over the dielectric layer.
  • a tapered end portion preferably is disposed so that a line bisecting the "V" is normal to the first direction.
  • FIGURE 1 there is shown a typical antenna array in accordance with the present invention.
  • the antenna array 1 is disposed on a pole 3 which is anchored in the ground 5.
  • the antenna 1 is coupled to a communication system in standard manner which forms no part of this invention and will not be discussed herein.
  • the antenna 1 includes a plurality of vertically extending dipole antenna elements 7 which will be discussed in more detail hereinbelow.
  • the antenna 1 is shown in greater detail in FIGURES 2a and 2b and includes a radome portion 9 of a dielectric material which is transparent to RF in the range of interest, such as, for example, fiberglass, and secured to a pair of multilayered regions 11 and 13 which retain the dipole antenna elements 7.
  • the frequency range for which the dipole antenna elements 7 is designed is determined by the height thereof as is well known.
  • the radome portion 9 and multilayered portions 11 are in the form of a "V" with the dipole antenna elements 7 extending vertically upward from the multilayered region 11 and extending vertically downward from the multilayered region 13.
  • the radome portion is aerodynamically shaped with the curved or bottom portion of the "V" preferably, but not necessarily, being essentially pointed to minimize wind resistance. It should be understood that a radome portion can be disposed on some or all edges to minimize wind resistance in all directions.
  • each multilayered region 11 and 13 are shown in part in greater detail in FIGURE 3 wherein each multilayered region is shown as having a first feed layer 15 formed of an electrical conductor, preferably copper, the layer 15 preferably being a microstrip or strip line secured to the dipole antenna element 7 by, for example, solder 21.
  • the dipole antenna element 7 is spaced from a ground plane 17, preferably of copper, which is also spaced from the feed layer 15 by a layer 19 of any standard dielectric material.
  • the dipole antenna element 7 has a major axis extending in a vertical direction along the length of said dipole antenna element.
  • the antenna array is shown in the shape of a "V” in the preferred embodiment, that shape is not critical.
  • the array can fold back and forth several times, such as in the shape of a "W” or two or more "V”s connected together or any other shape which will provide compactness and, preferably, lower wind resistance.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP03024914A 1996-09-26 1997-09-25 Gruppenantenne Withdrawn EP1385231A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US2676896P 1996-09-26 1996-09-26
US26768P 1996-09-26
EP97116712A EP0833404A3 (de) 1996-09-26 1997-09-25 Gruppenantenne

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97116712A Division EP0833404A3 (de) 1996-09-26 1997-09-25 Gruppenantenne

Publications (1)

Publication Number Publication Date
EP1385231A1 true EP1385231A1 (de) 2004-01-28

Family

ID=30001895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03024914A Withdrawn EP1385231A1 (de) 1996-09-26 1997-09-25 Gruppenantenne

Country Status (1)

Country Link
EP (1) EP1385231A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2410498A1 (de) * 1974-03-05 1975-09-18 Kathrein Werke Kg Logarithmisch-periodische antenne
EP0082053A1 (de) * 1981-12-15 1983-06-22 Thomson-Csf Strahlungssystem mit zwei im selben Frequenzbereich arbeitenden übereinander angebrachten Antennen
GB2207557A (en) * 1987-06-01 1989-02-01 Leader Radio Co Ltd Antenna
EP0519855A1 (de) * 1991-06-17 1992-12-23 Tecnes S.A. Kompakte aktive Antenne für Wettersatelliten
EP0717460A1 (de) * 1994-12-12 1996-06-19 Teracom Components Ab Vorrichtung zur Erzeugung von Radiowellen in Antennensystemen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2410498A1 (de) * 1974-03-05 1975-09-18 Kathrein Werke Kg Logarithmisch-periodische antenne
EP0082053A1 (de) * 1981-12-15 1983-06-22 Thomson-Csf Strahlungssystem mit zwei im selben Frequenzbereich arbeitenden übereinander angebrachten Antennen
GB2207557A (en) * 1987-06-01 1989-02-01 Leader Radio Co Ltd Antenna
EP0519855A1 (de) * 1991-06-17 1992-12-23 Tecnes S.A. Kompakte aktive Antenne für Wettersatelliten
EP0717460A1 (de) * 1994-12-12 1996-06-19 Teracom Components Ab Vorrichtung zur Erzeugung von Radiowellen in Antennensystemen

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