US2783467A - Ultra-short wave aerials - Google Patents

Ultra-short wave aerials Download PDF

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Publication number
US2783467A
US2783467A US295384A US29538452A US2783467A US 2783467 A US2783467 A US 2783467A US 295384 A US295384 A US 295384A US 29538452 A US29538452 A US 29538452A US 2783467 A US2783467 A US 2783467A
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US
United States
Prior art keywords
wave
ultra
guide
dielectric
thickness
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
US295384A
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English (en)
Inventor
Gutton Henri
Ortusi Antoine Jean
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Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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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 US2783467A publication Critical patent/US2783467A/en
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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

Definitions

  • Radio aerial systems suitable for use on ultra-high radio frequencies, and having one of the two perpendicular dimensions very different from the other, are of course well known.
  • a typical example of such a known aerial .5 Pal-lemusystem is the so-called cheese aerial, commonly emplayed for radar and which comprises a cylindro-parabolic reflector of small height, but much greater width, fed by a small horn ending a wave guide.
  • cylindrical height of a cheese aerial must be greater than half a wavelength.
  • the present invention seeks to provide improved aerials.
  • one dimension may be made extremely small but which will nevertheless provide a radiation diagram comparable with those of known aerials of considerably larger dimensions.
  • an aerial is constituted by 35 a wave guide, one wall of which is extended in the axial direction by a substantially flat metal plate which is covered with a substantially uniform layer of dielectric material which also penetrates into a part of the wave guide where its thickness diminishes progressively.
  • the plate extension is preferably trapezoidal with the shorter of its two parallel edges common with one of the longer edges of the guide mouth.
  • the layer of dielectric outside the guide is preferably pierced with holes suitably disposed and having suitable diameters to maintain the wave front plane at the outlet of the plate.
  • the plane xOy constitutes a radiating mouth along 6 which the wave has a constant phase.
  • the latter is preferably made of a thickness between as and 1.4 an (as having the value defined above).
  • the thickness a and the constant e of the dielectric it is possible to obtain in the. vertical plane (plane 302) a diagram having the desired width.
  • the diagram in the horizontal direction (plane xOz) is defined by the length of the plate 3 aldng Oz, and it may be made as fine as desired.
  • the dielectric layer 3 is extended by a bevelled tongue 4, which progressively transforms a H01 wave in the guide into a wave propagated at the speed of light in the space beyond the guide mouth.
  • the dielectric layer may be disposed directly on said surface.
  • the dielectric layer is pierced with holes having vertical axes and disposed in such 'manher as to advance the wave in the direction under consideration.
  • the diameters of the holes which are smaller than onequarter of the wavelength in the dielectric, vary according to the direction, the size of the, holes increasing for directions more and moi e inclined to the axis of symmetry of the whole arrangement.
  • Figure 2 illustrates one example of such perforation.
  • An ultra-short wave antenna comprising an elo'ngated tubular wave guide having a substantially uniform rectangular cross section along its axis; a'flat metal plate extending from one wall of said wave guide in direction of the axis of said wave guide arid having a width sub stantially larger than the thickness thereof; a substantially uniform layer of dielectric material covering said flat metal plate and penetrating into a portion of said wave guide in which its thickness diminishes progressively, the width of said layer being substantially larger than the thickness thereof.
  • An ultra-short wave antenna comprising-an elongated tubular wave guide having a substantially uniform rectangular cross section along its axis; a flat metal plate extending from one wall of said wave guide in direction In these of the axis of said wave guide and having a width sub-' stantially larger than the thickness thereof; a substantially uniform layer of dielectric material covering said flat metal plate and penetrating into a portion of said wave guide in which its thickness diminishes progressively, the width of said layer being substantially larger than the thickness thereof, said layer of'dielectric material outside said wave guide being formed with holes having their axes perpendicular to the surface of said dielectric layer, said holes being disposed and dimensioned to maintain a planar wave front at the outlet of said plate.
  • An ultra-short wave aintenna comprising an elongated tubular rectangular wave guide having a substantially uniform cross section along its axis; a trapezoidal shaped large flat metal plate extending from one of the edges of said tubular rectangular wave guide, the smaller parallel side of said trapezoidal shaped metal plate being,

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  • Aerials With Secondary Devices (AREA)
US295384A 1951-07-03 1952-06-25 Ultra-short wave aerials Expired - Lifetime US2783467A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR705545X 1951-07-03

Publications (1)

Publication Number Publication Date
US2783467A true US2783467A (en) 1957-02-26

Family

ID=9067214

Family Applications (1)

Application Number Title Priority Date Filing Date
US295384A Expired - Lifetime US2783467A (en) 1951-07-03 1952-06-25 Ultra-short wave aerials

Country Status (3)

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US (1) US2783467A (is")
BE (1) BE512344A (is")
GB (1) GB705545A (is")

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879508A (en) * 1956-08-02 1959-03-24 Hughes Aircraft Co Electromagnetic horn antenna
US2921309A (en) * 1954-10-08 1960-01-12 Hughes Aircraft Co Surface wave omnidirectional antenna
US2929065A (en) * 1957-02-27 1960-03-15 Hughes Aircraft Co Surface wave antenna
US4689629A (en) * 1982-09-27 1987-08-25 Rogers Corporation Surface wave antenna
US4970525A (en) * 1989-05-30 1990-11-13 Motorola, Inc. Waveguide antenna with increased gain

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880417A (en) * 1955-02-11 1959-03-31 Lockheed Aircraft Corp Traveling wave device

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425336A (en) * 1942-12-17 1947-08-12 Bell Telephone Labor Inc Microwave directive antenna
US2473446A (en) * 1945-11-06 1949-06-14 Henry J Riblet Antenna
US2577158A (en) * 1948-05-13 1951-12-04 Rca Corp Dielectric wave guide closure
US2594871A (en) * 1945-07-09 1952-04-29 Us Sec War Antenna
US2596190A (en) * 1947-09-05 1952-05-13 Wiley Carl Atwood Dielectric horn
US2605420A (en) * 1946-01-08 1952-07-29 Jaffe David Lawrence Pressurized antenna feed
US2605419A (en) * 1945-10-11 1952-07-29 Lester C Van Atta Wave guide feed for illuminating parabolic reflectors
US2605416A (en) * 1945-09-19 1952-07-29 Foster John Stuart Directive system for wave guide feed to parabolic reflector
US2617029A (en) * 1948-06-29 1952-11-04 Kinsey L Plummer Nutating antenna
US2648002A (en) * 1945-11-19 1953-08-04 Us Navy Dielectric antenna
US2684445A (en) * 1946-03-29 1954-07-20 Us Navy Lobe switching antenna

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425336A (en) * 1942-12-17 1947-08-12 Bell Telephone Labor Inc Microwave directive antenna
US2594871A (en) * 1945-07-09 1952-04-29 Us Sec War Antenna
US2605416A (en) * 1945-09-19 1952-07-29 Foster John Stuart Directive system for wave guide feed to parabolic reflector
US2605419A (en) * 1945-10-11 1952-07-29 Lester C Van Atta Wave guide feed for illuminating parabolic reflectors
US2473446A (en) * 1945-11-06 1949-06-14 Henry J Riblet Antenna
US2648002A (en) * 1945-11-19 1953-08-04 Us Navy Dielectric antenna
US2605420A (en) * 1946-01-08 1952-07-29 Jaffe David Lawrence Pressurized antenna feed
US2684445A (en) * 1946-03-29 1954-07-20 Us Navy Lobe switching antenna
US2596190A (en) * 1947-09-05 1952-05-13 Wiley Carl Atwood Dielectric horn
US2577158A (en) * 1948-05-13 1951-12-04 Rca Corp Dielectric wave guide closure
US2617029A (en) * 1948-06-29 1952-11-04 Kinsey L Plummer Nutating antenna

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921309A (en) * 1954-10-08 1960-01-12 Hughes Aircraft Co Surface wave omnidirectional antenna
US2879508A (en) * 1956-08-02 1959-03-24 Hughes Aircraft Co Electromagnetic horn antenna
US2929065A (en) * 1957-02-27 1960-03-15 Hughes Aircraft Co Surface wave antenna
US4689629A (en) * 1982-09-27 1987-08-25 Rogers Corporation Surface wave antenna
US4970525A (en) * 1989-05-30 1990-11-13 Motorola, Inc. Waveguide antenna with increased gain
WO1990015453A1 (en) * 1989-05-30 1990-12-13 Motorola, Inc. Waveguide antenna with increased gain
AU613557B2 (en) * 1989-05-30 1991-08-01 Motorola, Inc. Waveguide antenna with increased gain

Also Published As

Publication number Publication date
BE512344A (is")
GB705545A (en) 1954-03-17

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