US2283081A - Directional antenna - Google Patents

Directional antenna Download PDF

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Publication number
US2283081A
US2283081A US303520A US30352039A US2283081A US 2283081 A US2283081 A US 2283081A US 303520 A US303520 A US 303520A US 30352039 A US30352039 A US 30352039A US 2283081 A US2283081 A US 2283081A
Authority
US
United States
Prior art keywords
antenna
dipoles
antennae
directional antenna
braces
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.)
Expired - Lifetime
Application number
US303520A
Other languages
English (en)
Inventor
Metschl Emil
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of US2283081A publication Critical patent/US2283081A/en
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
    • 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
    • H01Q21/10—Collinear arrangements of substantially straight elongated conductive units
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements

Definitions

  • Directional antennae intended for very short waves such as ultra short Waves and decirneter waves, are known which are composed of a number of dipoles arranged in line to constitute a single antenna.
  • the invention relates to antenna structures of the kind comprising a number of antennae composed in this way, and it is mainly concerned with the provision of means by which these antennae are secured together.
  • Fig. 1 is a dagrammatic perspective view of an antenna of known type
  • Fig. 2 is a diagrammatic perspective view which shows one embodiment of the invention
  • Fig. 3 is a plan view of the arrangement represented in Fig. 2.
  • Fig. 1 shows tubular dipoles I, 2, 3, 4 arranged in line and containing conductors 5, 6, l, 8. These conductors and dipoles are interconnected alternately, that is to say, conductor 5 is joined to dipole 2, conductor 6 joined to the dipoles I, 3, conductor 1 joined to the dipoles 2, 4, while conductor 8 is -connected to dipole 3.
  • the dipoles are each half a wavelength long.
  • the distribution of potentials is represented by curves 9, I0,
  • t0 employ a number of antennae of the kind represented in Fig. 1. These antennae have to be arranged aside each other and at predetermined distances apart while -re- 'quiring to be interrelated by certain phase conditions. All these antennae may be fed, but it is possible also to feed only one antenna, the other ermany November 9, 1938 (-Cl. Z50-33) held in position by braces I9, 20, 2
  • braces I9, 20, 2l, 22 made of high-grade insulating material. Inferior insulating material may be used instead or the braces may be made of metal. For instance, they may be cast members. As the braces are fixed at the potential nodes no currents will ow between the antennae I3, I4, I5, I6.
  • Systems as provided by the invention may comprise any suitable number of antennae and these may ⁇ consist of any suitable number of dipoles. It is immaterialalso whether they are fed or are arranged to act as mere reflectors. Furthermore, the novel arrangement is adapted to serve either for transmitting or for receiving. Moreover, the invention is not restricted to the use of component dipoles of the kind/comprising inner conductors and tubular outer conductors interconnected at their joints. However, it is necessary for the voltage distribution to be such that there are potential nodes at which the said braces are fastened to the dipoles.
  • the antenna system as a whole may be positioned vertically or horizontally. Preferably, it is arranged as a freely supported structure.

Landscapes

  • Aerials With Secondary Devices (AREA)
US303520A 1938-11-09 1939-11-09 Directional antenna Expired - Lifetime US2283081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE212948X 1938-11-09

Publications (1)

Publication Number Publication Date
US2283081A true US2283081A (en) 1942-05-12

Family

ID=5810745

Family Applications (1)

Application Number Title Priority Date Filing Date
US303520A Expired - Lifetime US2283081A (en) 1938-11-09 1939-11-09 Directional antenna

Country Status (3)

Country Link
US (1) US2283081A (fr)
CH (1) CH212948A (fr)
FR (1) FR868418A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511974A (en) * 1950-06-20 Hangar tent
US2706779A (en) * 1952-03-14 1955-04-19 Bell Telephone Labor Inc High gain antenna
US20080246684A1 (en) * 2005-12-21 2008-10-09 Matsushita Electric Industrial Co., Ltd. Variable-directivity antenna

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56160102A (en) * 1980-05-13 1981-12-09 Koki Tanaka Folded antenna using coaxial line

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511974A (en) * 1950-06-20 Hangar tent
US2706779A (en) * 1952-03-14 1955-04-19 Bell Telephone Labor Inc High gain antenna
US20080246684A1 (en) * 2005-12-21 2008-10-09 Matsushita Electric Industrial Co., Ltd. Variable-directivity antenna
US7482993B2 (en) 2005-12-21 2009-01-27 Panasonic Corporation Variable-directivity antenna
JPWO2007072710A1 (ja) * 2005-12-21 2009-05-28 パナソニック株式会社 指向性可変アンテナ

Also Published As

Publication number Publication date
CH212948A (de) 1940-12-31
FR868418A (fr) 1941-12-30

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