GB460490A - Improvements in or relating to directional radio transmitting and receiving installations - Google Patents

Improvements in or relating to directional radio transmitting and receiving installations

Info

Publication number
GB460490A
GB460490A GB15636/36A GB1563636A GB460490A GB 460490 A GB460490 A GB 460490A GB 15636/36 A GB15636/36 A GB 15636/36A GB 1563636 A GB1563636 A GB 1563636A GB 460490 A GB460490 A GB 460490A
Authority
GB
United Kingdom
Prior art keywords
switches
radiators
june
relating
moving
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
GB15636/36A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB460490A publication Critical patent/GB460490A/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
    • H01Q19/12—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 wherein the surfaces are concave
    • H01Q19/17—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 wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
    • H01Q19/175—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 wherein the surfaces are concave the primary radiating source comprising two or more radiating elements arrayed along the focal line of a cylindrical focusing surface

Landscapes

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

Abstract

460,490. Directive wireless signalling. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. June 4, 1936, No. 15636. Convention date, June 4, 1935. [Class 40 (v)] The degree of " directivity " of a short-wave beam is controlled either by moving the radiators relatively to associated reflectors, or by varying the number of radiators in operation. This result is secured, as shown in Fig. 1, by moving one or more dipoles D1 . . . D3 towards or away from the focal-line of a parabolic reflector R, or by switching one or more of them into or out of circuit. The fir-tree aerial-array shown in Fig. 3, is controlled by means of switches S1, S2, which cut out one or more of the dipole-elements 1 . . . 8, when '' searching " for a distant transmitter. When the switches are closed the directive response is at its maximum. The control switches S, S1 may be ganged with other switches, which adjust the impedance of the feed-line accordingly.
GB15636/36A 1935-06-04 1936-06-04 Improvements in or relating to directional radio transmitting and receiving installations Expired GB460490A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE460490X 1935-06-04

Publications (1)

Publication Number Publication Date
GB460490A true GB460490A (en) 1937-01-28

Family

ID=6539735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15636/36A Expired GB460490A (en) 1935-06-04 1936-06-04 Improvements in or relating to directional radio transmitting and receiving installations

Country Status (1)

Country Link
GB (1) GB460490A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935746A (en) * 1958-10-30 1960-05-03 Arthur E Marston Spiral trough antennas
GB2161026A (en) * 1984-06-29 1986-01-02 Racal Antennas Limited Antenna arrangements
GB2268834A (en) * 1980-12-04 1994-01-19 Racal Mesl Ltd Radar arrangements and methods

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935746A (en) * 1958-10-30 1960-05-03 Arthur E Marston Spiral trough antennas
GB2268834A (en) * 1980-12-04 1994-01-19 Racal Mesl Ltd Radar arrangements and methods
GB2268834B (en) * 1980-12-04 1994-06-22 Racal Mesl Ltd Radar arrangements and methods of detecting different types of targets
US5477224A (en) * 1980-12-04 1995-12-19 Racal (Newbridge) Limited Radar arrangements and methods
GB2161026A (en) * 1984-06-29 1986-01-02 Racal Antennas Limited Antenna arrangements

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