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GB362254A - Improvements in or relating to reflector systems for use with short hertz waves - Google Patents

Improvements in or relating to reflector systems for use with short hertz waves

Info

Publication number
GB362254A
GB362254A GB5827/31A GB582731A GB362254A GB 362254 A GB362254 A GB 362254A GB 5827/31 A GB5827/31 A GB 5827/31A GB 582731 A GB582731 A GB 582731A GB 362254 A GB362254 A GB 362254A
Authority
GB
United Kingdom
Prior art keywords
short
relating
feb
reflector systems
focal length
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
GB5827/31A
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 GB362254A publication Critical patent/GB362254A/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

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

362,254. Directive wireless signalling. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, and LUDENIA, W., 57, Holsteinische Strasse, Steglitz, both in Berlin. Feb. 24, 1931, No. 5827. Convention date, Feb. 25, 1930. [Class 40 (v).] A reflector system for short waves, of the order of a decimetre, comprises a mirror having a focal length f large in comparison with its aperture k, and a small mirror s having a focal length # of onequarter the working wavelength. The two mirrors have a common focal point as shown.
GB5827/31A 1930-02-25 1931-02-24 Improvements in or relating to reflector systems for use with short hertz waves Expired GB362254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE362254X 1930-02-25

Publications (1)

Publication Number Publication Date
GB362254A true GB362254A (en) 1931-12-03

Family

ID=6304419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5827/31A Expired GB362254A (en) 1930-02-25 1931-02-24 Improvements in or relating to reflector systems for use with short hertz waves

Country Status (2)

Country Link
US (1) US1898197A (en)
GB (1) GB362254A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421593A (en) * 1943-04-06 1947-06-03 Gen Electric Coaxial half-wave microwave antenna
US2597391A (en) * 1946-04-30 1952-05-20 Us Sec War Antenna
DE1074370B (en) * 1958-11-19 1960-01-28 Feimer & Ziegler GmbH Frank furt/M West Armouring for pipe mills and the like

Also Published As

Publication number Publication date
US1898197A (en) 1933-02-21

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