DK49191A - ANTENNA CONSTRUCTION WITH EXTENSIVE ANTENNA ELEMENT - Google Patents

ANTENNA CONSTRUCTION WITH EXTENSIVE ANTENNA ELEMENT Download PDF

Info

Publication number
DK49191A
DK49191A DK049191A DK49191A DK49191A DK 49191 A DK49191 A DK 49191A DK 049191 A DK049191 A DK 049191A DK 49191 A DK49191 A DK 49191A DK 49191 A DK49191 A DK 49191A
Authority
DK
Denmark
Prior art keywords
transmission line
antenna element
tube
rod
shaped antenna
Prior art date
Application number
DK049191A
Other languages
Danish (da)
Other versions
DK49191D0 (en
DK168346B1 (en
Inventor
Erik Bech
Original Assignee
Dancall Radio As
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 Dancall Radio As filed Critical Dancall Radio As
Publication of DK49191D0 publication Critical patent/DK49191D0/en
Priority to DK049191A priority Critical patent/DK168346B1/en
Priority to AU14529/92A priority patent/AU1452992A/en
Priority to EP92907567A priority patent/EP0576531B1/en
Priority to PCT/DK1992/000086 priority patent/WO1992016980A1/en
Priority to AT92907567T priority patent/ATE119318T1/en
Priority to DE69201556T priority patent/DE69201556T2/en
Priority to ES92907567T priority patent/ES2071501T3/en
Publication of DK49191A publication Critical patent/DK49191A/en
Application granted granted Critical
Publication of DK168346B1 publication Critical patent/DK168346B1/en
Priority to GR950400839T priority patent/GR3015692T3/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
    • H01Q1/243—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 with built-in antennas
    • H01Q1/244—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 with built-in antennas extendable from a housing along a given path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/10—Telescopic elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

An antenna construction with a rod-shaped antenna element is adapted for use preferably in portable telephones. The rod-shaped antenna element is adapted to be slidably moveable in a tube between a first position in which substantially the entire rod-shaped antenna element protrudes from the tube and contributes to radiation, and a second position where just part of the rod-shaped antenna element protrudes from the tube and contributes to radiation. The rod-shaped antenna element is adapted to be received in the tube to provide a coaxial transmission line. The coaxial transmission line is adapted such that in the second position where part of the antenna element is received in the tube, it has a length and is terminated in a manner such that the impedance of the transmission line is high seen from the protruding part of the antenna element and thus does not affect this part. The coaxial transmission line may e.g. be an open half-wave transmission line. However, the transmission line may also be realized in the form of a short circuited quarter-wave transmission line or an open, shortened half-wave transmission line.
DK049191A 1991-03-19 1991-03-19 Antenna construction with extendable antenna element DK168346B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DK049191A DK168346B1 (en) 1991-03-19 1991-03-19 Antenna construction with extendable antenna element
AT92907567T ATE119318T1 (en) 1991-03-19 1992-03-18 ANTENNA CONSTRUCTION WITH AN EXTENDABLE ANTENNA ELEMENT.
EP92907567A EP0576531B1 (en) 1991-03-19 1992-03-18 An antenna construction with an extensible antenna element
PCT/DK1992/000086 WO1992016980A1 (en) 1991-03-19 1992-03-18 An antenna construction with an extensible antenna element
AU14529/92A AU1452992A (en) 1991-03-19 1992-03-18 An antenna construction with an extensible antenna element
DE69201556T DE69201556T2 (en) 1991-03-19 1992-03-18 ANTENNA CONSTRUCTION WITH A EXTENDABLE ANTENNA ELEMENT.
ES92907567T ES2071501T3 (en) 1991-03-19 1992-03-18 ANTENNA CONSTRUCTION WITH AN EXTENDABLE ANTENNA ELEMENT.
GR950400839T GR3015692T3 (en) 1991-03-19 1995-04-04 An antenna construction with an extensible antenna element.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK49191 1991-03-19
DK049191A DK168346B1 (en) 1991-03-19 1991-03-19 Antenna construction with extendable antenna element

Publications (3)

Publication Number Publication Date
DK49191D0 DK49191D0 (en) 1991-03-19
DK49191A true DK49191A (en) 1992-09-20
DK168346B1 DK168346B1 (en) 1994-03-14

Family

ID=8094162

Family Applications (1)

Application Number Title Priority Date Filing Date
DK049191A DK168346B1 (en) 1991-03-19 1991-03-19 Antenna construction with extendable antenna element

Country Status (8)

Country Link
EP (1) EP0576531B1 (en)
AT (1) ATE119318T1 (en)
AU (1) AU1452992A (en)
DE (1) DE69201556T2 (en)
DK (1) DK168346B1 (en)
ES (1) ES2071501T3 (en)
GR (1) GR3015692T3 (en)
WO (1) WO1992016980A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257835B (en) * 1991-07-13 1995-10-11 Technophone Ltd Retractable antenna
JP2809365B2 (en) * 1992-09-28 1998-10-08 エヌ・ティ・ティ移動通信網株式会社 Portable radio
AU673037B2 (en) * 1993-02-25 1996-10-24 Anten Corporation Antenna for a radio communication apparatus
JP2520557B2 (en) * 1993-02-26 1996-07-31 日本電気株式会社 Radio antenna
RU2152672C1 (en) * 1993-09-20 2000-07-10 Моторола Инк. Antenna assembly for radio communication device
DE69428757T2 (en) * 1993-09-23 2002-08-01 At & T Corp Automatic telescopic antenna mechanism
IL110008A (en) * 1994-06-13 1998-04-05 Galtronics Ltd Electrical antenna assembly and electrical device including same
US6008765A (en) * 1994-12-23 1999-12-28 Nokia Mobile Phones Limited Retractable top load antenna
GB2296603B (en) * 1994-12-23 1999-02-17 Nokia Mobile Phones Ltd Retractable top load antenna
FI97499C (en) * 1995-04-07 1996-12-27 Nokia Mobile Phones Ltd Double acting antenna
FI99219C (en) * 1995-06-06 1997-10-27 Nokia Mobile Phones Ltd Antenna that works in two frequency bands
US5812093A (en) * 1995-09-29 1998-09-22 Motorola, Inc. Antenna assembly for a wireless-communication device
SE507244C2 (en) * 1996-08-29 1998-04-27 Ericsson Telefon Ab L M Antenna device and method of portable radio equipment and method of providing such an antenna device
SE518575C2 (en) * 1997-03-24 2002-10-22 Ericsson Telefon Ab L M Sliding antenna with alternating electrical length
SE9802772D0 (en) * 1998-08-19 1998-08-19 Allgon Ab Antenna device comprising sliding connector means
JP3347093B2 (en) 1999-06-10 2002-11-20 埼玉日本電気株式会社 Portable wireless device and terminal matching switching method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4725845A (en) * 1986-03-03 1988-02-16 Motorola, Inc. Retractable helical antenna
JPS63173934U (en) * 1987-04-30 1988-11-11
JP2756672B2 (en) * 1987-12-25 1998-05-25 日本アンテナ株式会社 Multi-frequency antenna
JPH01105237U (en) * 1987-12-28 1989-07-14
US4847629A (en) * 1988-08-03 1989-07-11 Alliance Research Corporation Retractable cellular antenna

Also Published As

Publication number Publication date
WO1992016980A1 (en) 1992-10-01
EP0576531A1 (en) 1994-01-05
DK49191D0 (en) 1991-03-19
DE69201556T2 (en) 1995-06-29
DK168346B1 (en) 1994-03-14
AU1452992A (en) 1992-10-21
ATE119318T1 (en) 1995-03-15
DE69201556D1 (en) 1995-04-06
GR3015692T3 (en) 1995-07-31
ES2071501T3 (en) 1995-06-16
EP0576531B1 (en) 1995-03-01

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed