GB1253174A - - Google Patents

Info

Publication number
GB1253174A
GB1253174A GB1253174DA GB1253174A GB 1253174 A GB1253174 A GB 1253174A GB 1253174D A GB1253174D A GB 1253174DA GB 1253174 A GB1253174 A GB 1253174A
Authority
GB
United Kingdom
Prior art keywords
reflector
reflectors
mast
ties
july
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
Application number
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 filed Critical
Publication of GB1253174A publication Critical patent/GB1253174A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/183—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators
    • 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
    • H01Q19/10—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 reflecting surfaces
    • H01Q19/104—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 reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
    • 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
    • H01Q19/10—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 reflecting surfaces
    • H01Q19/18—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 reflecting surfaces having two or more spaced reflecting surfaces
    • H01Q19/185—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 reflecting surfaces having two or more spaced reflecting surfaces wherein the surfaces are plane

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Astronomy & Astrophysics (AREA)
  • Sustainable Development (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

1,253,174. Aerials. COMPAGNIE GENERALE D'ELECTRICITE. 20 July, 1970 [23 July, 1969], No. 35008/70. Heading H4A. An aerial comprises reflectors 18, 20 which are located respectively at the top and at the foot of a mast 2. The reflectors are linked by ties 22, 24, 26 and are so mounted that displacements of one are transmitted to the other through said ties. As described, the mast 2 is stayed, and has a triangular support frame 16 at its top which carries the reflector 18. The reflector 20 is rotatable about a fixed centre, and is supported from the ground on frames 30, 32, 34. Both reflectors are plane, and are normally inclined at 45 degrees to the horizontal. A parabolic reflector 28 is mounted on the mast 2 opposite the reflector 20, and has a feed horn at its focus. Plane waves from the reflector 28 are directed upwards by the reflector 20 to the reflector 18, which re-directs them horizontally. If the reflector 18 is tilted because of wind, a corresponding movement is communicated to the reflector 20, so that the reflectors remain parallel, and the waves continue to be directed horizontally. The reflectors 18, 20 may be elliptically shaped, and the reflector 18 may be larger than the reflector 20 and be made slightly concave, to correct wave-front deformation.
GB1253174D 1969-07-23 1970-07-20 Expired GB1253174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR696925176A FR2050326B1 (en) 1969-07-23 1969-07-23

Publications (1)

Publication Number Publication Date
GB1253174A true GB1253174A (en) 1971-11-10

Family

ID=9037926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1253174D Expired GB1253174A (en) 1969-07-23 1970-07-20

Country Status (8)

Country Link
US (1) US3689923A (en)
BE (1) BE753596A (en)
CH (1) CH514239A (en)
DE (1) DE2036146A1 (en)
FR (1) FR2050326B1 (en)
GB (1) GB1253174A (en)
NL (1) NL7010698A (en)
SE (1) SE353982B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348585A1 (en) * 1976-04-16 1977-11-10 Thomson Csf PERISCOPIC ASSEMBLY WITH SUPPORT TUBE AND GROUPING OF SUCH ASSEMBLIES
DE2623955C2 (en) * 1976-05-28 1978-03-02 Fa. Carl Zeiss, 7920 Heidenheim Periscopic angle mirror system with switchable viewing direction
DE3106321A1 (en) * 1981-02-20 1982-09-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt ADJUSTMENT METHOD FOR ANTENNAS ARRANGED ON VARIABLE DIRECTIVE FUNCTIONS
US6018325A (en) * 1997-10-14 2000-01-25 At&T Corp Monopole antenna mounting system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE190641C (en) *
FR372952A (en) * 1906-12-27 1907-04-25 Gabriel Gars Remote vision device
US2510059A (en) * 1945-05-16 1950-06-06 Us Sec War Platform
BE501888A (en) * 1950-05-16
FR1050075A (en) * 1952-01-31 1954-01-05 Honeycomb dispersive mirror
GB1140950A (en) * 1966-08-02 1969-01-22 Barringer Research Ltd Instrument supporting system

Also Published As

Publication number Publication date
CH514239A (en) 1971-10-15
SE353982B (en) 1973-02-19
FR2050326B1 (en) 1973-02-02
BE753596A (en) 1971-01-18
NL7010698A (en) 1971-01-26
US3689923A (en) 1972-09-05
FR2050326A1 (en) 1971-04-02
DE2036146A1 (en) 1971-02-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees