GB789140A - Improvements in or relating to radar antennae - Google Patents

Improvements in or relating to radar antennae

Info

Publication number
GB789140A
GB789140A GB26201/56A GB2620156A GB789140A GB 789140 A GB789140 A GB 789140A GB 26201/56 A GB26201/56 A GB 26201/56A GB 2620156 A GB2620156 A GB 2620156A GB 789140 A GB789140 A GB 789140A
Authority
GB
United Kingdom
Prior art keywords
axis
reflector
waveguide
motor
antenna
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
GB26201/56A
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.)
Siemens Schweiz AG
Albiswerk Zuerich AG
Original Assignee
Siemens Albis AG
Albiswerk Zuerich AG
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 Siemens Albis AG, Albiswerk Zuerich AG filed Critical Siemens Albis AG
Publication of GB789140A publication Critical patent/GB789140A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01Q3/18—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 movable and the reflecting device is fixed
    • 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

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

789,140. Aerials. ALBISWERK ZURICH AKT.-GES. Aug. 27, 1956 [Oct. 28, 1955], No. 26201/56. Class 40 (7). Relates to a radar antenna which may perform either a conical scan or a plane scan. The antenna comprises a primary radiator 1 terminating a waveguide 13 and a reflector 2, the two antenna members being arranged for independent movement. To perform a conical scan, the primary radiator is moved in a circle about a first axis 12, whilst the reflector is held stationary, and to perform a linear scan, the primary radiator is held stationary whilst the reflector is oscillated about an axis (horizontal as shown) perpendicular to the first axis. The waveguide is mounted in a universal joint 14 and is coupled through a further universal joint to a disc 15 driven by a motor 16. The primary radiator may thus be moved in a circle about axis 12, and if the inflector is held stationary with its axis of symmetry coincident with axis 12, the antenna performs a conical scan. The angle α between waveguide 13 and axis 12 is 1-1.5 degrees, and the rate of rotation about this axis approximately 1800 revolutions per minute. Reflector 2 is also mounted on joint 14 (but independently of waveguide 13) so as to permit tilting movement about a horizontal axis. For this purpose, the reflector is connected at a point 18 outside the tilting axis through a drive-spring 19 with a crank wheel 20 driven through worm 22 by a motor 21. The arrangement includes springs 23, 24 which are dimensioned so that the resonant frequency of the whole of the tiltable assembly is between 3 and 5 cycles per second. The tilting angle # is approximately 10 degrees. The whole antenna assembly and drive is supported on a pedestal 4 so as to be capable of elevational adjustment about an axis 5 under the control of a motor 9 and azimuthal adjustment about an axis 7 under the control of a motor 8.
GB26201/56A 1955-10-28 1956-08-27 Improvements in or relating to radar antennae Expired GB789140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH789140X 1955-10-28

Publications (1)

Publication Number Publication Date
GB789140A true GB789140A (en) 1958-01-15

Family

ID=4536826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26201/56A Expired GB789140A (en) 1955-10-28 1956-08-27 Improvements in or relating to radar antennae

Country Status (2)

Country Link
US (1) US2945229A (en)
GB (1) GB789140A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120856A (en) * 1982-05-11 1983-12-07 Thorn Emi Ferguson Antenna assembly

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117320A (en) * 1961-08-14 1964-01-07 Zenith Radio Corp Built-in antenna remotely positioned with respect to wave-signal receiver cabinet
NL292652A (en) * 1962-05-25
US3187333A (en) * 1962-06-27 1965-06-01 Ite Circuit Breaker Ltd Antenna scan torque reducer
US3479107A (en) * 1966-12-15 1969-11-18 Bendix Corp Apparatus for scanning an area with an oscillatory scanning element
US3982247A (en) * 1975-04-09 1976-09-21 Rohr Industries, Inc. Antenna spring counterweight
US4786912A (en) * 1986-07-07 1988-11-22 Unisys Corporation Antenna stabilization and enhancement by rotation of antenna feed
US5212493A (en) * 1989-02-17 1993-05-18 Thomson-Lgt Laboratoire General Des Telecomm. Antenna system for reception from direct broadcasting satellites
GB2404286A (en) * 2003-07-23 2005-01-26 Ford Global Tech Llc Mechanically operated beam scanner
US6820531B1 (en) * 2003-12-01 2004-11-23 Textron Systems Corporation Positioning system with continuous-range inclination and rotation angles
BRPI0924447A2 (en) * 2009-11-05 2016-01-26 Andrew Llc reflective antenna power rf seal
US10079424B2 (en) * 2015-09-16 2018-09-18 Viasat, Inc. Multiple-assembly antenna positioner with eccentric shaft
CN105742781B (en) * 2016-01-28 2019-01-25 华为技术有限公司 Antenna adjustments system and base station

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610711A (en) * 1941-08-12 1948-10-20 Sperry Gyroscope Co Inc Improvements in or relating to scanning apparatus for use in radio detecting and locating systems
US2543188A (en) * 1947-04-15 1951-02-27 Tomlinson I Moseley Radar scanner apparatus
US2574376A (en) * 1949-12-24 1951-11-06 Gen Electric Antenna scanner
DE1688833U (en) * 1952-08-06 1954-12-09 Patelhold Patentverwertung ANTENNA SYSTEM WITH A RADIATION DIAGRAM, WHICH ROTATES MAXIMUM AROUND THE SYSTEM AXIS.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120856A (en) * 1982-05-11 1983-12-07 Thorn Emi Ferguson Antenna assembly

Also Published As

Publication number Publication date
US2945229A (en) 1960-07-12

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