Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
  • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
  • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
  • G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
• • 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
  • H01Q19/06—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 refracting or diffracting devices, e.g. lens
  • H01Q19/062—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 refracting or diffracting devices, e.g. lens for focusing
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
  • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
  • H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device

Landscapes

• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Astronomy & Astrophysics (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Radiation Pyrometers (AREA)
• Photometry And Measurement Of Optical Pulse Characteristics (AREA)
• Geophysics And Detection Of Objects (AREA)
• Optical Communication System (AREA)
• Aerials With Secondary Devices (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9169753

Family Applications (1)

Country Status (7)

Families Citing this family (6)

• 1976
  • 1976-02-27 FR FR7605669A patent/FR2356130A1/en active Granted
• 1977
  • 1977-02-24 NL NL7701996A patent/NL7701996A/en not_active Application Discontinuation
  • 1977-02-24 SE SE7702064A patent/SE419011B/en unknown
  • 1977-02-24 BE BE6045894A patent/BE851795A/en unknown
  • 1977-02-25 DE DE19772708341 patent/DE2708341A1/en active Pending
  • 1977-02-25 IT IT20703/77A patent/IT1077280B/en active
  • 1977-02-25 GB GB8091/77A patent/GB1552412A/en not_active Expired

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