GB784807A - Improvements in or relating to aerials - Google Patents

Improvements in or relating to aerials

Info

Publication number
GB784807A
GB784807A GB2383655A GB2383655A GB784807A GB 784807 A GB784807 A GB 784807A GB 2383655 A GB2383655 A GB 2383655A GB 2383655 A GB2383655 A GB 2383655A GB 784807 A GB784807 A GB 784807A
Authority
GB
United Kingdom
Prior art keywords
aerial
helix
feeder
cabinet
carries
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
GB2383655A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB784807A publication Critical patent/GB784807A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas

Landscapes

  • Support Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

784,807. Aerials; radio receiving sets. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 18, 1955 [Aug. 21, 1954], No. 23836/55. Classes 40 (5) and 40 (7). A aerial suitable for incorporation into the cabinet of a radio receiver comprises a conductor of a length approximately equal to half the operating wavelength wound into a continuous open-ended helix. The feeder for the aerial is connected to two tapping points positioned symmetrically on either side of the centre of the winding and spaced suitably to match the aerial and feeder. The total length of the helix may be between #/10 and #/20 and the diameter between #/100 and #/200. It is possible to damp the aerial by connecting a suitable resistance across the helix. Further helical conductors may be arranged parallel to the aerial helix to form a director and reflector. In an embodiment mounted inside a radio cabinet a non-metallic bracket 13 is secured on top of a rotatable shaft 8. This carries a rod 14 of ferromagnetic material on which are wound coils 15 and 16 for medium and long waveband reception. It also carries a ceramic rod 17 to which are glued the turns of an aerial 1 constructed according to the invention. The feeder 2 is connected symmetrically as shown. The shaft 8 carries a pulley 18 driven by rope 19 and shaft 20 which projects through the front of the cabinet so that the aerial directivity can be adjusted thereby.
GB2383655A 1954-08-21 1955-08-18 Improvements in or relating to aerials Expired GB784807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP12551A DE1012656B (en) 1954-08-21 1954-08-21 Dipole antenna built into a radio receiver

Publications (1)

Publication Number Publication Date
GB784807A true GB784807A (en) 1957-10-16

Family

ID=7364126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2383655A Expired GB784807A (en) 1954-08-21 1955-08-18 Improvements in or relating to aerials

Country Status (3)

Country Link
DE (1) DE1012656B (en)
FR (1) FR1137499A (en)
GB (1) GB784807A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955286A (en) * 1958-02-24 1960-10-04 Internat Res & Dev Corp Plural loop antenna having ferrite cores
EP1122810A2 (en) * 2000-01-31 2001-08-08 Mitsubishi Materials Corporation Antenna device and assembly of antenna device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077724B1 (en) * 1970-02-05 1973-12-21 Choffat Georges
AU2292670A (en) * 1970-12-02 1972-06-08 Chu Associates, Inc Balanced tunable helical monopole antenna
US4879570A (en) * 1987-03-24 1989-11-07 Nippon Antenna Co., Ltd. Broadcasting wave reception antenna

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR946920A (en) * 1946-05-21 1949-06-17 Philips Nv Antenna
FR982724A (en) * 1949-03-08 1951-06-14 Ind De E C Grammont Et De Alex Antenna for television receivers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955286A (en) * 1958-02-24 1960-10-04 Internat Res & Dev Corp Plural loop antenna having ferrite cores
EP1122810A2 (en) * 2000-01-31 2001-08-08 Mitsubishi Materials Corporation Antenna device and assembly of antenna device
EP1122810B1 (en) * 2000-01-31 2012-02-22 Mitsubishi Materials Corporation Antenna device

Also Published As

Publication number Publication date
DE1012656B (en) 1957-07-25
FR1137499A (en) 1957-05-29

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