Thomas, 1986 - Google Patents

Classifications

• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q13/00—Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave
  • H01Q13/02—Waveguide horns
  • H01Q13/025—Multimode horn antennas; Horns using higher mode of propagation
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q13/00—Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave
  • H01Q13/02—Waveguide horns
  • H01Q13/0266—Waveguide horns provided with a flange or a choke
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q19/00—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic
  • H01Q19/10—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic using reflecting surfaces
  • H01Q19/12—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
  • H01Q19/13—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
  • H01Q19/132—Horn reflector antennas; Off-set feeding
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q19/00—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic
  • H01Q19/06—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic using refracting or diffracting devices, e.g. lens
  • H01Q19/08—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic using refracting or diffracting devices, e.g. lens for modifying the radiation pattern of a radiating horn in which it is located
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q13/00—Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave
  • H01Q13/02—Waveguide horns
  • H01Q13/0208—Corrugated horns
  • H01Q13/0225—Corrugated horns of non-circular cross-section
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q19/00—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic
  • H01Q19/10—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic using reflecting surfaces
  • H01Q19/12—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
  • H01Q19/17—Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q13/00—Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave
  • H01Q13/20—Non-resonant leaky-waveguide or transmission-line aerials; Equivalent structures causing radiation along the transmission path of a guided wave
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q15/00—Devices for reflection, refraction, diffraction, or polarisation of waves radiated from an aerial, e.g. quasi-optical devices
  • H01Q15/14—Reflecting surfaces; Equivalent structures
  • H01Q15/16—Curved in two dimensions, e.g. paraboloidal
  • H01Q15/161—Collapsible reflectors
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an aerial or aerial system
  • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an aerial or aerial system using mechanical relative movement between primary active elements and secondary devices of aerials or aerial systems
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q25/00—Aerials or aerial systems providing at least two radiating patterns
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q1/00—Details of, or arrangements associated with, aerials
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q21/00—Aerial arrays or systems
  • H01Q21/06—Arrays of individually energised active aerial 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—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q9/00—Electrically-short aerials having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
  • H01Q9/04—Resonant aerials
  • H01Q9/16—Resonant aerials with feed intermediate between the extremities of the aerial, e.g. centre-fed dipole
  • H01Q9/26—Resonant aerials with feed intermediate between the extremities of the aerial, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01Q—AERIALS
  • H01Q21/00—Aerial arrays or systems
  • H01Q21/0006—Particular feeding systems
  • H01Q21/0018—Space- fed arrays
• • H—ELECTRICITY
  • H01—BASIC ELECTRIC ELEMENTS
  • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
  • H01P5/00—Coupling devices of the waveguide type

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