US2807800A - High frequency directional aerials - Google Patents

High frequency directional aerials Download PDF

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Publication number
US2807800A
US2807800A US534115A US53411555A US2807800A US 2807800 A US2807800 A US 2807800A US 534115 A US534115 A US 534115A US 53411555 A US53411555 A US 53411555A US 2807800 A US2807800 A US 2807800A
Authority
US
United States
Prior art keywords
plates
holes
aerial
high frequency
plane
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
US534115A
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English (en)
Inventor
Broussaud Georges
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil 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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
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Publication of US2807800A publication Critical patent/US2807800A/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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/28—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements or conductive elements forming artificial dielectric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave

Definitions

  • the object of the present invention is a high frequency aerial comprising at least one reflecting solid plane metal plate and at least one perforated metal plate substantially parallel to said reflecting plate, and means for generating or receiving a wave propagating between said perforated plates and said reflecting plates and radiated through the holes of said perforated plate.
  • the radiation pattern of such an aerial is a narrow beam, the axis of which forms a certain angle with the plates and 'whose projection on the plates is parallel to the direction of propagation of the wave between the plates.
  • This aerial has a wider passband and is easier to adjust than certain devices of prior art, such as that described by L. J. Chu in United States Patent 2,479,209.
  • Figures 1 and 2 show a side and front elevation, respectively, of an aerial according to the invention, comprising two perforated plane plates and a plane reflector.
  • Figure 3 is a perspective view of a V-shaped aerial according to a modification.
  • the aerial shown in Figures 1 and 2 comprises a solid rectangular reflecting metal plate 1 and two rectangular metal plates 2a and 2b perforated with circular holes, the respective centers of which are aligned in three rows lengthwise and sixteen rows broadwise.
  • the respective diameters of the broadwise located holes are equal to each other and those of the lengthwise located holes increase regularly from one end of the plate to the other.
  • All these plates are coextensive, and in the particular embodiment shown, vertically disposed, in order to obtain a radiation pattern having an horizontal axis of symmetry.
  • a wave guide 4 is extended by a horn 3 whose external edges rest respectively against the edges of the shorter sides of plates 1 and 2a and that end of the structure where the holes are smaller.
  • the plates are bolted or braced together to form a rigid structure which is positioned to obtain the desired direction of radiation in the horizontal plane.
  • the aerial according to the present invention does not comprise any reflecting element short-circuiting the end of the plates and thus forming a closed guide.
  • the presence of such an element causes standing waves to appear, which reduces the bandwidth of the aerial.
  • the aerial shown in Figure 3 comprises a wave guide 4 extended by a horn 3, itself extended by two oblong metal elements 5 and 6 connected at an obtuse angle.
  • Horn 3 and the two elements 5 and 6 constitute a hollow body which may be manufactured beforehand.
  • Metal plates pairs 1, 1', 2a, 2a, 2b, Zb, are respectively connected by their respective edges to the edges BF, GH, EF, GH' of this body.
  • the assembly comprising said guide, hollow body and plates has a symmetry plane in which is disposed a matching rod 7, 'within said hollow body.
  • Plates 1 and 1' are solid and constitute reflecting surfaces, whereas plates 2a, 2a and 2b, 2b are perforated with holes of a constant diameter equal to 1.4 cm.-
  • the aerial of Figure 3 operates in the same manner as two aerials of the type shown in Figures 1 and 2, joined in the plane of symmetry of the unit, and its radiation pattern has said plane for its plane of symmetry, i. e. the common bisecting plane of the dihedron formed by the plates.
  • Aerial for ultra-high frequency energy comprising in combination at least one reflecting plane solid metal plate, and on the same'side of saidplate afirstandia second metal plate perforated with holes and substantially parallel to said solid plate, identical to and facing each other; said solid and saidfirst perforated plate limit.
  • a guiding space for an ultra-high frequency wave said guiding, space having a first and a second extremity and said holes facing each other respectively and being arranged in rows parallel to the direction of propagation of said ultra high frequency wave insaid guiding space and in rows perpendicular thereto, and a horn disposed at the first extremity of said guiding space.
  • Aerial for radiating ultrahigh frequency energy comprising in combination a first and a second solid plane metal plate, identical to each other, and forming a dihedron substantially greater than 90; at least a first and a second identical plane metal plate perforated with holes and respectively parallel to said first and second reflecting metal plate; said first and second solid plate, said first and second perforated plate limiting, respectively, a first and a second guiding space symmetrical to each other, for a first and a second ultra high frequency energy wave, respectively; said holes being arranged, in said first and second perforated plate, in rows parallel respectively to the direction of propagation of said first and said second wave andin rows perpendicular thereto; a horn arranged in the symmetry plane of said first and said second guide, for exciting therein said first and said second wave.

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Waveguide Aerials (AREA)
US534115A 1954-09-15 1955-09-13 High frequency directional aerials Expired - Lifetime US2807800A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR961444X 1954-09-15

Publications (1)

Publication Number Publication Date
US2807800A true US2807800A (en) 1957-09-24

Family

ID=9498017

Family Applications (1)

Application Number Title Priority Date Filing Date
US534115A Expired - Lifetime US2807800A (en) 1954-09-15 1955-09-13 High frequency directional aerials

Country Status (4)

Country Link
US (1) US2807800A (fr)
DE (1) DE961444C (fr)
FR (1) FR1111603A (fr)
GB (1) GB801885A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172113A (en) * 1962-06-06 1965-03-02 Whilden G Heinard Curved antenna with variably spaced slots
US3389393A (en) * 1966-02-18 1968-06-18 Lockheed Aircraft Corp Low profile broadband microwave antenna system
US3430247A (en) * 1967-09-05 1969-02-25 North American Rockwell Centerfed travelling wave array having a squinted aperture
US5173714A (en) * 1989-05-16 1992-12-22 Arimura Giken Kabushiki Kaisha Slot array antenna
US5177496A (en) * 1989-04-28 1993-01-05 Arimura Giken Kabushiki Kaisha Flat slot array antenna for te mode wave
US5239311A (en) * 1989-04-28 1993-08-24 Arimura Giken Kabushiki Kaisha Flat slot array antenna

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1286732A (fr) * 1961-01-23 1962-03-09 Csf Antenne plaquée à excitation répartie
US4272770A (en) * 1979-11-13 1981-06-09 Westinghouse Electric Corp. Reflector antennae apparatus for limiting aperture blockage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479209A (en) * 1945-07-09 1949-08-16 Chu Lan Jen Antenna
US2596480A (en) * 1946-11-20 1952-05-13 Ca Nat Research Council Directive antenna for microwaves
US2648839A (en) * 1950-10-02 1953-08-11 Rca Corp Direction finding antenna system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479209A (en) * 1945-07-09 1949-08-16 Chu Lan Jen Antenna
US2596480A (en) * 1946-11-20 1952-05-13 Ca Nat Research Council Directive antenna for microwaves
US2648839A (en) * 1950-10-02 1953-08-11 Rca Corp Direction finding antenna system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172113A (en) * 1962-06-06 1965-03-02 Whilden G Heinard Curved antenna with variably spaced slots
US3389393A (en) * 1966-02-18 1968-06-18 Lockheed Aircraft Corp Low profile broadband microwave antenna system
US3430247A (en) * 1967-09-05 1969-02-25 North American Rockwell Centerfed travelling wave array having a squinted aperture
US5177496A (en) * 1989-04-28 1993-01-05 Arimura Giken Kabushiki Kaisha Flat slot array antenna for te mode wave
US5239311A (en) * 1989-04-28 1993-08-24 Arimura Giken Kabushiki Kaisha Flat slot array antenna
US5173714A (en) * 1989-05-16 1992-12-22 Arimura Giken Kabushiki Kaisha Slot array antenna

Also Published As

Publication number Publication date
DE961444C (de) 1957-04-04
FR1111603A (fr) 1956-03-02
GB801885A (en) 1958-09-24

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