GB357480A - Improvements in or relating to antennae for wireless signalling apparatus - Google Patents

Improvements in or relating to antennae for wireless signalling apparatus

Info

Publication number
GB357480A
GB357480A GB13281/31A GB1328131A GB357480A GB 357480 A GB357480 A GB 357480A GB 13281/31 A GB13281/31 A GB 13281/31A GB 1328131 A GB1328131 A GB 1328131A GB 357480 A GB357480 A GB 357480A
Authority
GB
United Kingdom
Prior art keywords
helix
length
aerial
wave
antennae
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
GB13281/31A
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Publication of GB357480A publication Critical patent/GB357480A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/04—Non-resonant antennas, e.g. travelling-wave antenna with parts bent, folded, shaped, screened or electrically loaded to obtain desired phase relation of radiation from selected sections of the antenna

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

357,480. Aerials. SOC. FRANCAISE RADIO - ELECTRIQUE, 79, Boulevard Haussmann, Paris. May 5, 1931, No. 13281. Convention date, May 6, 1930. Drawings to Specification. [Class 40 (v).] An aerial is in the form of a helix the developed length of each turn of which is equal to twice the wave-length and the pitch of which is equal to the wave-length. In the example described each turn consists of four straight portions, half a wavelength long, each advancing a quarter wavelength in the direction of the axis of the helix. The aerial is directive, the direction of maximum propagation or reception being that of the axis of the helix, and prevents the effects of fading due to the change of polarization of incoming waves. Several aerials may be used to enhance the directional effect.
GB13281/31A 1930-05-06 1931-05-05 Improvements in or relating to antennae for wireless signalling apparatus Expired GB357480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR357480X 1930-05-06

Publications (1)

Publication Number Publication Date
GB357480A true GB357480A (en) 1931-09-24

Family

ID=8893576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13281/31A Expired GB357480A (en) 1930-05-06 1931-05-05 Improvements in or relating to antennae for wireless signalling apparatus

Country Status (3)

Country Link
BE (1) BE379299A (en)
DE (1) DE543480C (en)
GB (1) GB357480A (en)

Also Published As

Publication number Publication date
BE379299A (en)
DE543480C (en) 1932-02-05

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