GB866349A - Improvements in or relating to directive aerial systems - Google Patents

Improvements in or relating to directive aerial systems

Info

Publication number
GB866349A
GB866349A GB3330658A GB3330658A GB866349A GB 866349 A GB866349 A GB 866349A GB 3330658 A GB3330658 A GB 3330658A GB 3330658 A GB3330658 A GB 3330658A GB 866349 A GB866349 A GB 866349A
Authority
GB
United Kingdom
Prior art keywords
difference
signals
waveguides
aerial
target
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
GB3330658A
Inventor
Sidney Cornbleet
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3330658A priority Critical patent/GB866349A/en
Publication of GB866349A publication Critical patent/GB866349A/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

Landscapes

  • Radar Systems Or Details Thereof (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

866,349. Aerials, radar. GENERAL ELECTRIC CO. Ltd. Sept. 29, 1959 [Oct 17, 1958], No. 33306/58. Class 40(7) [Also in Group XL(b)] An aerial for use with "lock on" radar systems comprises two elements each transmitting and receiving at an angle to a common axis and arranged for rotation about that axis. Aerial system. Radiation from a target incident upon reflector 4, Fig. 1, is received by horns 12, 14 and passes along waveguides 1, 2, whose smaller dimension gradually increases, to a directional coupler 15 where the signals in the two waveguides are in phase quadrature, as the holes 11, 13 are # apart. The sum of the signals 8 passes along waveguides 1b and 17, and a coaxial line formed by the outer surface of the cylinder 28 and the blocks 19 and 32, to a waveguide 33. The difference of the signals passes along waveguides 2b and 18 to a cavity 21 and thence to waveguide 42 by means of the coaxial line 39, 28. The block 19, fixed to the waveguides 1, 2 is rotated by motor 27. Radar system. The aerial radiation pattern, Fig. 4, rotates about the axis 6. When the target is at B or B<SP>1</SP> the difference between the two signals from the horns 12, 14 which is modulated by the rotation, is detected in a difference receiver 44, Fig. 3, actuating apparatus 45 to reduce the difference by aligning the aerial on the target. Comparison with a sync signal from the transmitter 46, controls the direction of movement. To improve the signal/ noise ratio in the difference signal the latter may modulate a sum signal from the T.R. unit 43. A pulsed attenuator may be included in the difference receiver 44 to avoid transmission pulses affecting the control apparatus. The sum of the signals is passed to the T.R. unit 43 for range determination. The system may be mounted in a missile and used to keep it on target.
GB3330658A 1958-10-17 1958-10-17 Improvements in or relating to directive aerial systems Expired GB866349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3330658A GB866349A (en) 1958-10-17 1958-10-17 Improvements in or relating to directive aerial systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3330658A GB866349A (en) 1958-10-17 1958-10-17 Improvements in or relating to directive aerial systems

Publications (1)

Publication Number Publication Date
GB866349A true GB866349A (en) 1961-04-26

Family

ID=10351243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3330658A Expired GB866349A (en) 1958-10-17 1958-10-17 Improvements in or relating to directive aerial systems

Country Status (1)

Country Link
GB (1) GB866349A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593646A1 (en) * 1986-01-28 1987-07-31 Thomson Csf RADAR ANTENNA WITH LOW DIMENSIONS.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593646A1 (en) * 1986-01-28 1987-07-31 Thomson Csf RADAR ANTENNA WITH LOW DIMENSIONS.
EP0236160A1 (en) * 1986-01-28 1987-09-09 Thomson-Csf Small-size radar antenna
US4933681A (en) * 1986-01-28 1990-06-12 Thomson-Csf Radar antenna of small overall dimensions

Similar Documents

Publication Publication Date Title
US4214244A (en) Null pattern technique for reduction of an undesirable interfering signal
US3879732A (en) Multi-directional barrage jamming system
US5344099A (en) Missile beamrider guidance using polarization-agile beams
GB1451192A (en) Weapon training systems
GB618044A (en) Improvements in or relating to an automatic device for tracking distant bodies for radiant energy
GB946978A (en) Improvements in or relating to radar systems
GB1432933A (en) Guidance and control system for target-seeking devices
GB581344A (en) Improvements in or relating to systems of secret radio communication
IT1160916B (en) Satellite microwave signal tracking system - processes TW21 mode signals to determine angular disposition of plane of polarisation
GB1605305A (en) Radar arrangements
US4107682A (en) System for overcoming the effect of electronic countermeasures
GB866349A (en) Improvements in or relating to directive aerial systems
US4635880A (en) Remote control system for a missile
US2850728A (en) Radio navigation aiding devices
US4006478A (en) Security device
GB1175365A (en) Improvements in Transmit-Receive Systems Comprising Electronically Scanned Antenna Arrays.
US3164831A (en) Automatic gain control circuits for directive receiving systems
US4215347A (en) Target seeker simulator
KR102031926B1 (en) Homming device antenna and method for control the same
US6650270B1 (en) Radar system
GB1524571A (en) Radio navigation system and scanning beam antenna
US2721320A (en) Signal comparison system
GB1344092A (en) Antenna tracking systems
US3290599A (en) Power modulator for transmitter beam scan
JP2748502B2 (en) Radar equipment