GB376615A - Improvements in or relating to aerials and feeding arrangements therefor - Google Patents

Improvements in or relating to aerials and feeding arrangements therefor

Info

Publication number
GB376615A
GB376615A GB32045/31A GB3204531A GB376615A GB 376615 A GB376615 A GB 376615A GB 32045/31 A GB32045/31 A GB 32045/31A GB 3204531 A GB3204531 A GB 3204531A GB 376615 A GB376615 A GB 376615A
Authority
GB
United Kingdom
Prior art keywords
aerial
wave
length
impedance
feeder
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
GB32045/31A
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 GB376615A publication Critical patent/GB376615A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable

Landscapes

  • Details Of Aerials (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transmitters (AREA)

Abstract

376,615. Aerials. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Nov. 18, 1931, No. 32045. Convention date, Nov. 18, 1930. [Class 40 (v).] In order to match the impedance of a feed-line with the aerial impedance over a range of wave-lengths, the feed-line is of fixed length whilst the length of the aerial A is adjusted so as to maintain a constant ratio of aerial length to wave-length, and so that the radiation-resistance is always equal to the surge impedance of the feeder. The feeder preferably consists of two concentric tubes having a surge impedance of 35 ohms for a quarter-wave aerial, Fig. 1, and 70 ohms for a half-wave aerial, Fig. 2. In the latter case the feeder may comprise two conductors spaced slightly apart, or two concentric cables with the outer coverings connected together and earthed.
GB32045/31A 1930-11-18 1931-11-18 Improvements in or relating to aerials and feeding arrangements therefor Expired GB376615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE376615X 1930-11-18

Publications (1)

Publication Number Publication Date
GB376615A true GB376615A (en) 1932-07-14

Family

ID=6344273

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32045/31A Expired GB376615A (en) 1930-11-18 1931-11-18 Improvements in or relating to aerials and feeding arrangements therefor

Country Status (3)

Country Link
US (1) US1988592A (en)
DE (1) DE595846C (en)
GB (1) GB376615A (en)

Also Published As

Publication number Publication date
DE595846C (en) 1934-04-21
US1988592A (en) 1935-01-22

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