CA2525995A1 - Balanced dipole antenna - Google Patents

Balanced dipole antenna Download PDF

Info

Publication number
CA2525995A1
CA2525995A1 CA002525995A CA2525995A CA2525995A1 CA 2525995 A1 CA2525995 A1 CA 2525995A1 CA 002525995 A CA002525995 A CA 002525995A CA 2525995 A CA2525995 A CA 2525995A CA 2525995 A1 CA2525995 A1 CA 2525995A1
Authority
CA
Canada
Prior art keywords
coaxial cable
dipole arms
stubs
source
load
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.)
Granted
Application number
CA002525995A
Other languages
French (fr)
Other versions
CA2525995C (en
Inventor
Yihong Qi
Perry Jarmuszewski
Paul Dullaert
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.)
BlackBerry Ltd
Original Assignee
Research in Motion 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 Research in Motion Ltd filed Critical Research in Motion Ltd
Publication of CA2525995A1 publication Critical patent/CA2525995A1/en
Application granted granted Critical
Publication of CA2525995C publication Critical patent/CA2525995C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
    • 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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/20—Two collinear substantially straight active elements; Substantially straight single active elements

Landscapes

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

Abstract

A balanced dipole antenna has a coaxial cable connected between a load or source and the left and right dipole arms to substantially eliminate common mode current and radiative coupling between the coaxial cable and the left and right dipole arms. The connection between the source/load coaxial cable and the left and right dipole arms is a symmetric balun having a center branch that is an extension of the source/load coaxial cable, and left and right stubs. When the stubs are segments of coaxial cable, the outer conductors of the left and right stubs of the symmetric balun are coupled to the left and right dipole arms, and one of the inner conductors is connected to the inner conductor of the center branch, while the other inner conductor is connected to the outer conductor.
CA002525995A 2004-11-09 2005-11-08 Balanced dipole antenna Expired - Fee Related CA2525995C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04256929.3 2004-11-09
EP04256929A EP1655801B1 (en) 2004-11-09 2004-11-09 Balanced dipole antenna

Publications (2)

Publication Number Publication Date
CA2525995A1 true CA2525995A1 (en) 2006-05-09
CA2525995C CA2525995C (en) 2009-10-13

Family

ID=34930780

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002525995A Expired - Fee Related CA2525995C (en) 2004-11-09 2005-11-08 Balanced dipole antenna

Country Status (5)

Country Link
EP (2) EP1819011B1 (en)
AT (2) ATE364239T1 (en)
CA (1) CA2525995C (en)
DE (2) DE602004006874T2 (en)
HK (1) HK1090756A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105186105A (en) * 2015-08-27 2015-12-23 鲁勇 General type internet-of-things (IOT) antenna
CN106876973B (en) * 2017-03-29 2023-12-12 佛山市盛夫通信设备有限公司 Dual-broadband dual-polarized wall-mounted antenna
CN109962341A (en) * 2017-12-22 2019-07-02 网件公司 Antenna structure and relevant building and application method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473328A (en) * 1944-12-19 1949-06-14 Rca Corp Line balance converter
FR1453576A (en) * 1965-11-08 1966-06-03 Apparatus for converting signals between a balanced form and an unbalanced form
US5977842A (en) * 1998-07-01 1999-11-02 Raytheon Company High power broadband coaxial balun

Also Published As

Publication number Publication date
CA2525995C (en) 2009-10-13
EP1819011A3 (en) 2007-08-22
ATE425563T1 (en) 2009-03-15
EP1819011B1 (en) 2009-03-11
EP1819011A2 (en) 2007-08-15
EP1655801A1 (en) 2006-05-10
HK1090756A1 (en) 2006-12-29
ATE364239T1 (en) 2007-06-15
DE602004006874D1 (en) 2007-07-19
DE602004006874T2 (en) 2008-02-07
EP1655801B1 (en) 2007-06-06
DE602004019991D1 (en) 2009-04-23

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20171108

MKLA Lapsed

Effective date: 20171108