GB976253A - Improvements in or relating to aerial systems - Google Patents

Improvements in or relating to aerial systems

Info

Publication number
GB976253A
GB976253A GB12954/62A GB1295462A GB976253A GB 976253 A GB976253 A GB 976253A GB 12954/62 A GB12954/62 A GB 12954/62A GB 1295462 A GB1295462 A GB 1295462A GB 976253 A GB976253 A GB 976253A
Authority
GB
United Kingdom
Prior art keywords
reflector
planar reflector
planar
horn
paraboloidal
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
GB12954/62A
Inventor
Michael Wales
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB12954/62A priority Critical patent/GB976253A/en
Priority to SE961/63A priority patent/SE302783B/xx
Priority to US258702A priority patent/US3165747A/en
Priority to DEM44169U priority patent/DE1929064U/en
Priority to FR930412A priority patent/FR1370602A/en
Publication of GB976253A publication Critical patent/GB976253A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01Q19/19—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 comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H01Q19/191—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 comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein the primary active element uses one or more deflecting surfaces, e.g. beam waveguide feeds
    • 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
    • H01Q19/19—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 comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
    • H01Q3/20—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is fixed and the reflecting device is movable

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

976,253. Aerials. MARCONI CO. Ltd. Nov. 13, 1962 [April 4, 1962], No. 12954/62. Heading H4A. Energy propagated by the radio horn 2 reflected from the planar reflector 3 on to the truncated sectional paraboloidal reflector 1 to give a substantially parallel beam of radiation which beam is also substantially parallel to the planar reflector 3. Preferably the planar reflector 3 is positioned midway between the focus X of the paraboloidal reflector 1 and the horn 2. The horn 2 is preferably offset by a small angle, e.g. 6 degrees, from the normal to the planar reflector 3 to reduce the re-absorption of the transmitted energy. Side lobes in the radiation pattern are reduced by side plates extending between the edges of the paraboloidal reflector and the planar reflector (Fig. 2, not shown). The planar reflector 3 may be hinged about its line of contact with the paraboloidal reflector (Fig. 4, not shown), thus enabling the emergent beam to scan in elevation whereby the system is suitable for use as a height-finding radar.
GB12954/62A 1962-04-04 1962-04-04 Improvements in or relating to aerial systems Expired GB976253A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB12954/62A GB976253A (en) 1962-04-04 1962-04-04 Improvements in or relating to aerial systems
SE961/63A SE302783B (en) 1962-04-04 1963-01-29
US258702A US3165747A (en) 1962-04-04 1963-02-15 Primary horn antenna feeding planar reflector through hole in focused curved reflector
DEM44169U DE1929064U (en) 1962-04-04 1963-03-13 DIRECTIONAL ANTENNA ARRANGEMENT.
FR930412A FR1370602A (en) 1962-04-04 1963-04-04 Antenna improvements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12954/62A GB976253A (en) 1962-04-04 1962-04-04 Improvements in or relating to aerial systems

Publications (1)

Publication Number Publication Date
GB976253A true GB976253A (en) 1964-11-25

Family

ID=10014164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12954/62A Expired GB976253A (en) 1962-04-04 1962-04-04 Improvements in or relating to aerial systems

Country Status (4)

Country Link
US (1) US3165747A (en)
DE (1) DE1929064U (en)
GB (1) GB976253A (en)
SE (1) SE302783B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117786Y1 (en) * 1970-03-31 1976-05-13

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3284802A (en) * 1963-11-12 1966-11-08 Bell Telephone Labor Inc Folded horn-reflector antenna wherein primary reflector is nonreflective at portion where specular reflection to feed would otherwise occur
US3357022A (en) * 1963-12-05 1967-12-05 Bell Telephone Labor Inc Folded horn-reflector antenna structure
US3683387A (en) * 1970-12-28 1972-08-08 Us Army Compact scanning radar antenna
JPS5028255A (en) * 1973-07-11 1975-03-22
JPS55179403U (en) * 1980-03-13 1980-12-23

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531454A (en) * 1942-02-04 1950-11-28 Sperry Corp Directive antenna structure
US2595271A (en) * 1943-12-20 1952-05-06 Kline Morris Antenna lobe shifting device
BE468393A (en) * 1945-01-24
US2656464A (en) * 1945-11-05 1953-10-20 Charles V Robinson Feed locus for semiparabolic reflector
US2579140A (en) * 1946-03-13 1951-12-18 Crawford Walter Freeman Wave projector
US2597391A (en) * 1946-04-30 1952-05-20 Us Sec War Antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117786Y1 (en) * 1970-03-31 1976-05-13

Also Published As

Publication number Publication date
US3165747A (en) 1965-01-12
SE302783B (en) 1968-08-05
DE1929064U (en) 1965-12-16

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