GB1531925A - Helical antennas - Google Patents

Helical antennas

Info

Publication number
GB1531925A
GB1531925A GB363876A GB363876A GB1531925A GB 1531925 A GB1531925 A GB 1531925A GB 363876 A GB363876 A GB 363876A GB 363876 A GB363876 A GB 363876A GB 1531925 A GB1531925 A GB 1531925A
Authority
GB
United Kingdom
Prior art keywords
helix
jan
helical
helical antennas
abreu
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
GB363876A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1531925A publication Critical patent/GB1531925A/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
    • H01Q11/08—Helical antennas

Abstract

1531925 Aerials J D E S ABREU 29 Jan 1976 [29 Jan 1975] 03638/76 Heading H4A A helical aerial comprises a flat strip helical element 6 formed into the shape of a helix of progressively reducing diameter, the broad surface of which faces along the axis of the helix. Axial support 4 supports the helix via struts 3 and associated reflector 1. Improved matching to a 50# feeder and an increase in gain over prior art systems (Fig. 1, not shown), is stated to be obtained.
GB363876A 1975-01-29 1976-01-29 Helical antennas Expired GB1531925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR7500748 1975-01-29

Publications (1)

Publication Number Publication Date
GB1531925A true GB1531925A (en) 1978-11-15

Family

ID=3993020

Family Applications (1)

Application Number Title Priority Date Filing Date
GB363876A Expired GB1531925A (en) 1975-01-29 1976-01-29 Helical antennas

Country Status (1)

Country Link
GB (1) GB1531925A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178904A (en) * 1985-08-05 1987-02-18 Tdk Corp Antenna system
US4780727A (en) * 1987-06-18 1988-10-25 Andrew Corporation Collapsible bifilar helical antenna
US5329287A (en) * 1992-02-24 1994-07-12 Cal Corporation End loaded helix antenna

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178904A (en) * 1985-08-05 1987-02-18 Tdk Corp Antenna system
GB2178904B (en) * 1985-08-05 1990-04-25 Tdk Corp Antenna system
US4780727A (en) * 1987-06-18 1988-10-25 Andrew Corporation Collapsible bifilar helical antenna
US5329287A (en) * 1992-02-24 1994-07-12 Cal Corporation End loaded helix antenna

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee