GB692719A - Improvements relating to radio antennas - Google Patents

Improvements relating to radio antennas

Info

Publication number
GB692719A
GB692719A GB1518350A GB1518350A GB692719A GB 692719 A GB692719 A GB 692719A GB 1518350 A GB1518350 A GB 1518350A GB 1518350 A GB1518350 A GB 1518350A GB 692719 A GB692719 A GB 692719A
Authority
GB
United Kingdom
Prior art keywords
elements
unipole
degrees
aerial
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
GB1518350A
Inventor
Glynn Bennett Jeffery
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1518350A priority Critical patent/GB692719A/en
Publication of GB692719A publication Critical patent/GB692719A/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
    • H01Q9/44—Resonant antennas with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

692,719. Aerials. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 13, 1951 [June 17, 1950], No. 15183/50. Class 40 (vii). An aerial of particular use for the reception of television signals comprises a unipole element 1 connected to one conductor of a feeder 2 and a plurality of elements forming an earth system connected to the other conductor of the feeder, the earth system elements (3, 4 and 5) radiating from the aerial element and lying to one side of a plane containing it. The elements 3, 4 and 5 may lie in a plane perpendicular to element 1 and the angles between elements 4 and 3, and 5 and 3, may each be 60 degrees. Each of the elements is a quarter of the operating wavelength long. In use the aerial may be mounted, for example in a house loft, with the earthing elements symmetrically arranged with respect to a plane containing the unipole and a point from which the strongest interference signals, such as from car ignition systems, are expected. The aerial element may be vertical but greater attenuation of interference from below is stated to be obtained by tilting the unipole away from the interference through about 20 degrees. The earthing elements 3, 4 and 5 need not be in the same plane and elements 4 and 5 may be tilted towards the unipole and make an angle of 30 degrees with the plane perpendicular to the unipole and containing element 3. If desired, a reflector or director element 6 may be added to the system in the plane containing elements 1 and 3 and also connected to the outside of the feeder 2 and radiating from it. This element may be #2 times the length of the unipole and make an angle of 45 degrees with it. A shaped metal plate with sockets or channel sections to hold the earth elements and reflector or director in their desired relationship is described with reference to Fig. 2 (not shown). This plate may have an insulated cover on which the unipole is mounted and be provided with a central aperture for the attachment of a coaxial feeder. The unipole of any of the embodiments may be of the folded type.
GB1518350A 1950-06-17 1950-06-17 Improvements relating to radio antennas Expired GB692719A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1518350A GB692719A (en) 1950-06-17 1950-06-17 Improvements relating to radio antennas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1518350A GB692719A (en) 1950-06-17 1950-06-17 Improvements relating to radio antennas

Publications (1)

Publication Number Publication Date
GB692719A true GB692719A (en) 1953-06-10

Family

ID=10054483

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1518350A Expired GB692719A (en) 1950-06-17 1950-06-17 Improvements relating to radio antennas

Country Status (1)

Country Link
GB (1) GB692719A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2736246A1 (en) * 1977-08-11 1979-02-15 Werner Kleber Transmit and receive antenna with vertical rod - has concentric radial radiators forming upwards angle with rod axis and downwards extending reflectors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2736246A1 (en) * 1977-08-11 1979-02-15 Werner Kleber Transmit and receive antenna with vertical rod - has concentric radial radiators forming upwards angle with rod axis and downwards extending reflectors

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