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SE9802715L - Double-band antenna device comprising helix-shaped and elongated radiating structures - Google Patents

Double-band antenna device comprising helix-shaped and elongated radiating structures

Info

Publication number
SE9802715L
SE9802715L SE9802715A SE9802715A SE9802715L SE 9802715 L SE9802715 L SE 9802715L SE 9802715 A SE9802715 A SE 9802715A SE 9802715 A SE9802715 A SE 9802715A SE 9802715 L SE9802715 L SE 9802715L
Authority
SE
Sweden
Prior art keywords
antenna
helix
double
shaped
antenna device
Prior art date
Application number
SE9802715A
Other languages
Swedish (sv)
Other versions
SE9802715D0 (en
SE514804C2 (en
Inventor
Magnus Marthinson
Gunnar Filipsson
Original Assignee
Allgon Ab
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
Priority claimed from SE9600538A external-priority patent/SE9600538D0/en
Application filed by Allgon Ab filed Critical Allgon Ab
Priority to SE9802715A priority Critical patent/SE514804C2/en
Publication of SE9802715D0 publication Critical patent/SE9802715D0/en
Publication of SE9802715L publication Critical patent/SE9802715L/en
Publication of SE514804C2 publication Critical patent/SE514804C2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The antenna (9) is mounted on the housing of a hand- portable device e.g a mobile telephone, an includes a feed section (7) and an antenna whip (8) arranged to slide into and out of the telephone to retracted and extended positions, in combination with a multi-band helical structure (1,2). Two helical radiating elements (1,2) are mounted in helical grooves (3,4) of a dielectric carrier (5) which includes a cylindrical opening extending longitudinally through the centre of the carrier. The two helices (1,2) have approximately the same axial length, with the inner coil (1) having a smaller diameter and greater pitch than the outer coil (2). This enables the structure to resonate at different frequencies in widely separated frequency bands. The antenna whip (8) includes straight radiator in a lower portion, and an upper portion which is non- conductive and provided with a knob.
SE9802715A 1996-02-13 1998-08-12 Multi-band antenna for mobile radio communications SE514804C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9802715A SE514804C2 (en) 1996-02-13 1998-08-12 Multi-band antenna for mobile radio communications

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9600538A SE9600538D0 (en) 1996-02-13 1996-02-13 Dual band antenna means incorporating helical and elongated radiating structures
PCT/SE1997/000229 WO1997030489A1 (en) 1996-02-13 1997-02-13 Dual band antenna means incorporating helical and elongated radiating structures
SE9802715A SE514804C2 (en) 1996-02-13 1998-08-12 Multi-band antenna for mobile radio communications

Publications (3)

Publication Number Publication Date
SE9802715D0 SE9802715D0 (en) 1998-08-12
SE9802715L true SE9802715L (en) 1998-08-12
SE514804C2 SE514804C2 (en) 2001-04-30

Family

ID=26662513

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9802715A SE514804C2 (en) 1996-02-13 1998-08-12 Multi-band antenna for mobile radio communications

Country Status (1)

Country Link
SE (1) SE514804C2 (en)

Also Published As

Publication number Publication date
SE9802715D0 (en) 1998-08-12
SE514804C2 (en) 2001-04-30

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Legal Events

Date Code Title Description
NUG Patent has lapsed