GB897215A - Improvements in or relating to radar apparatus - Google Patents

Improvements in or relating to radar apparatus

Info

Publication number
GB897215A
GB897215A GB2962957A GB2962957A GB897215A GB 897215 A GB897215 A GB 897215A GB 2962957 A GB2962957 A GB 2962957A GB 2962957 A GB2962957 A GB 2962957A GB 897215 A GB897215 A GB 897215A
Authority
GB
United Kingdom
Prior art keywords
feeders
pairs
plate
signals
aerial
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
GB2962957A
Inventor
Peter Frederic Thoma Stillwell
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB2962957A priority Critical patent/GB897215A/en
Publication of GB897215A publication Critical patent/GB897215A/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)

Abstract

897,215. Radar; aerials. ELECTRIC & MUSICAL INDUSTRIES Ltd. Sept. 12, 1958 [Sept. 20, 1957], No. 29629/57. Class 40(7). [Also in Group XL(b)] The invention comprises a radar apparatus of the type which transmits and receives two or more pairs of signals, the received signals being representative of the angular displacement of an object about different axes, combined with a paraboloid aerial of the space stabilized type and characterized in that means are provided for transmitting and receiving only one of the pairs of signals at a time and in that a number of hybrid arrangements, equal to or less than the number of pairs of signals, are mounted to be moved with the paraboloid of the aerial. In the case of two pairs of signals received signals are fed from the aerial alternately to one or other of the pairs of waveguides 7. 9 or 8,10 whence they pass through guides 13, 15 to a hybrid arrangement 16 which gives sum and difference signal outputs in guides 17 and 18 respectively. The waveguides 7, 8, 9, 10 are mounted symmetrically about the axis of the paraboloid aerial and have their ends in close proximity to the flat rear face of a plate, the front face of which forms part of the parabola. This plate carries two or four feeders. In the case of two feeders, Fig. I (not shown), the plate and feeders are rotated by a motor so that the feeders are fed from opposite pairs of waveguides twice in each revolution, the guides not feeding the feeders being effectively shorted by the plate. If four feeders are employed the plate need not be rotated, a shutter being rotated between the ends of the guides and the rear face of the plate so that only two feeders are energized at any one time while the remaining feeders are short-circuited. Specification 874,203 is referred to.
GB2962957A 1957-09-20 1957-09-20 Improvements in or relating to radar apparatus Expired GB897215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2962957A GB897215A (en) 1957-09-20 1957-09-20 Improvements in or relating to radar apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2962957A GB897215A (en) 1957-09-20 1957-09-20 Improvements in or relating to radar apparatus

Publications (1)

Publication Number Publication Date
GB897215A true GB897215A (en) 1962-05-23

Family

ID=10294572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2962957A Expired GB897215A (en) 1957-09-20 1957-09-20 Improvements in or relating to radar apparatus

Country Status (1)

Country Link
GB (1) GB897215A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397070A2 (en) * 1989-05-11 1990-11-14 kabelmetal electro GmbH Antenna with a parabolic reflector
CN115425404A (en) * 2022-09-02 2022-12-02 中国船舶集团有限公司第七二三研究所 Front end highly integrated feeder structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397070A2 (en) * 1989-05-11 1990-11-14 kabelmetal electro GmbH Antenna with a parabolic reflector
EP0397070A3 (en) * 1989-05-11 1991-08-07 kabelmetal electro GmbH Antenna with a parabolic reflector
CN115425404A (en) * 2022-09-02 2022-12-02 中国船舶集团有限公司第七二三研究所 Front end highly integrated feeder structure
CN115425404B (en) * 2022-09-02 2024-05-07 中国船舶集团有限公司第七二三研究所 Front-end highly integrated feeder line structure

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