US2269075A - Directive antenna system - Google Patents

Directive antenna system Download PDF

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Publication number
US2269075A
US2269075A US358065A US35806540A US2269075A US 2269075 A US2269075 A US 2269075A US 358065 A US358065 A US 358065A US 35806540 A US35806540 A US 35806540A US 2269075 A US2269075 A US 2269075A
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US
United States
Prior art keywords
radiators
antenna system
row
antenna
main
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
US358065A
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English (en)
Inventor
Boerner Rudolf
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 US2269075A publication Critical patent/US2269075A/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

Definitions

  • radiators may be arranged beside each other or in a plane in such a manner that their mutual distances are larger than M2, i being the wavelength, and further, that they are fed in accordance with a binomial coefficient law.
  • Such arrangement comprises reflecting dipoles located in the same height as the main dipoles.
  • the radiators are fed with cophasal currents which decrease in intensity in the direction from the mid-antenna toward the outer antennae.
  • the number and strength of the secondary maxima may be diminished by making the mutual distances of the antennae smaller than M
  • an additional antenna combination or several such combinations are arranged to act as reflecting antenna systems which if fed at the proper phase, as by radiation, for instance, add to the efficiency of the antenna combination.
  • Figs. 1 to 8 are diagrams showing each an embodiment of the invention.
  • Arrangements as provided by the invention comprise a linear antenna system, that is, a rectilinear row of radiators A, and an auxiliary antenna system composed of radiators B.
  • the radiators B are pro.
  • Figs. 3 and 4 show them arranged on only. one side thereof, the other side being occupied by a plane reflector C, as earth, for in-- stance.
  • the radiators B are not located beside the radiators A but are offset with respect to these, thus being arranged in positions that correspond to the gaps between the radiators A.
  • Antenna combinations of this construction have a directional effect of fairly constant sharpness and act greatly to suppress the secondary maxima of the radiation characteristics produced by the usual systems comprising radiators disposed in a rectilinear row, and hence can be employed wherever these systems are used, even if these are unsuitable on account of unduly high secondary maxima arising in them.
  • systems as provided by the invention may be located above each other so as to compose a structure of the 'kind represented in Figs. 5 or 6.
  • This structure comprises dipoles arranged in planes and produces in the two planes of polarization a directive beam free from secondary maxima.
  • One of the reflecting dipole planes may be replaced by an arrangement having a reflecting surface spaced from the midplane by a distance which preferably equals 0.2 to 0.27)., a unilateral directive characteristic free from secondary radiation being obtained in this way.
  • a reflect- 40 mg surface D such as earth
  • the arrangement so obtained is likewise free from secondary radiation and may be useful in connection with broadcast an radiators, and the auxiliary radiators being associated in separate groups with respective ones of the main radiators, the radiators of such groups each being arranged on the circumference of circles having the associated main radiator as a centre point said auxiliary radiators being arranged out of alignment with a line through the associated main radiator normal to said rectilinear rows.
  • An antenna system comprising a first rectilinear row of main radiators, a second rectilinear row of auxiliary radiators, this second row being arranged on one side of the row of main radia tors, and means defining a reflecting surface located on the other side of said first row, the auxiliary radiators being associated in groups of at least two with individual main radiators, such groups each being arranged on the circumference of circles having its associated main radiator as a centre point.
  • An antenna system having a rectilinear row of main radiators and a rectilinear row of auxiliary radiators which extends along a line parallel to the row of main radiators, the auxiliary radiators being associated in separate groups with respective ones of the main radiators, each such group comprising two of the auxiliary radiators these two radiators forming with their associated main radiator as vertex angle of 90

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)
US358065A 1939-10-12 1940-09-24 Directive antenna system Expired - Lifetime US2269075A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2269075X 1939-10-12

Publications (1)

Publication Number Publication Date
US2269075A true US2269075A (en) 1942-01-06

Family

ID=7993135

Family Applications (1)

Application Number Title Priority Date Filing Date
US358065A Expired - Lifetime US2269075A (en) 1939-10-12 1940-09-24 Directive antenna system

Country Status (3)

Country Link
US (1) US2269075A (enrdf_load_stackoverflow)
BE (1) BE439358A (enrdf_load_stackoverflow)
FR (1) FR868426A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570599A (en) * 1946-03-19 1951-10-09 Rca Corp Aerial array and feeder arrangement for use therewith
US2938209A (en) * 1956-12-10 1960-05-24 Brueckmann Helmut Antenna curtain array with coupling network
FR2732515A1 (fr) * 1995-03-30 1996-10-04 Lesbros Pierre Robert Victor Antenne de reception non electrique utilisant le differentiel de 2 champs magnetiques et le differentiel de temps pour l'eclaircissement et l'acheminement du signal radio vers le poste recepteur

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570599A (en) * 1946-03-19 1951-10-09 Rca Corp Aerial array and feeder arrangement for use therewith
US2938209A (en) * 1956-12-10 1960-05-24 Brueckmann Helmut Antenna curtain array with coupling network
FR2732515A1 (fr) * 1995-03-30 1996-10-04 Lesbros Pierre Robert Victor Antenne de reception non electrique utilisant le differentiel de 2 champs magnetiques et le differentiel de temps pour l'eclaircissement et l'acheminement du signal radio vers le poste recepteur

Also Published As

Publication number Publication date
FR868426A (fr) 1941-12-30
BE439358A (enrdf_load_stackoverflow)

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