GB0123502D0 - Antenna for use in radio communications - Google Patents

Antenna for use in radio communications

Info

Publication number
GB0123502D0
GB0123502D0 GBGB0123502.7A GB0123502A GB0123502D0 GB 0123502 D0 GB0123502 D0 GB 0123502D0 GB 0123502 A GB0123502 A GB 0123502A GB 0123502 D0 GB0123502 D0 GB 0123502D0
Authority
GB
United Kingdom
Prior art keywords
antenna
radio communications
conductive
namely
applications
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
GBGB0123502.7A
Other versions
GB2380323B (en
GB2380323A (en
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Priority to GB0123502A priority Critical patent/GB2380323B/en
Publication of GB0123502D0 publication Critical patent/GB0123502D0/en
Priority to ES02748837T priority patent/ES2260461T3/en
Priority to PCT/EP2002/007277 priority patent/WO2003030302A1/en
Priority to AT02748837T priority patent/ATE324681T1/en
Priority to DE60211003T priority patent/DE60211003T2/en
Priority to EP02748837A priority patent/EP1435125B1/en
Publication of GB2380323A publication Critical patent/GB2380323A/en
Application granted granted Critical
Publication of GB2380323B publication Critical patent/GB2380323B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • 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
    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/32—Vertical arrangement of element
    • H01Q9/36—Vertical arrangement of element with top loading

Landscapes

  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Transceivers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

An antenna for use in a mobile radio communication unit has a helical coil portion 3 located between and electrically connected to two further portions, namely a second portion 5 having a conductive stub for connection to the radio unit, and a third portion 7 comprising a conductive capacitive cylinder or curved plate. The length of the antenna is not greater than 100 mm, preferably not greater than 0.1 g . The antenna has applications in TETRA digital communications. Superior return loss and bandwidth characteristics are claimed.
GB0123502A 2001-09-29 2001-09-29 Antenna for use in radio communications Expired - Fee Related GB2380323B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB0123502A GB2380323B (en) 2001-09-29 2001-09-29 Antenna for use in radio communications
DE60211003T DE60211003T2 (en) 2001-09-29 2002-07-01 WENDEL ANTENNA
PCT/EP2002/007277 WO2003030302A1 (en) 2001-09-29 2002-07-01 Helical antenna
AT02748837T ATE324681T1 (en) 2001-09-29 2002-07-01 HELICAL ANTENNA
ES02748837T ES2260461T3 (en) 2001-09-29 2002-07-01 HELICOIDAL ANTENNA.
EP02748837A EP1435125B1 (en) 2001-09-29 2002-07-01 Helical antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0123502A GB2380323B (en) 2001-09-29 2001-09-29 Antenna for use in radio communications

Publications (3)

Publication Number Publication Date
GB0123502D0 true GB0123502D0 (en) 2001-11-21
GB2380323A GB2380323A (en) 2003-04-02
GB2380323B GB2380323B (en) 2003-11-05

Family

ID=9922998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0123502A Expired - Fee Related GB2380323B (en) 2001-09-29 2001-09-29 Antenna for use in radio communications

Country Status (6)

Country Link
EP (1) EP1435125B1 (en)
AT (1) ATE324681T1 (en)
DE (1) DE60211003T2 (en)
ES (1) ES2260461T3 (en)
GB (1) GB2380323B (en)
WO (1) WO2003030302A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI363756B (en) * 2004-12-07 2012-05-11 Du Pont Method for preparing n-phenylpyrazole-1-carboxamides
JP4869387B2 (en) * 2009-07-06 2012-02-08 日本アンテナ株式会社 Whip antenna
US8816934B2 (en) 2010-07-30 2014-08-26 MP Antenna, Ltd. Antenna assembly having reduced packaging size
JP6677427B2 (en) * 2016-05-16 2020-04-08 モトローラ ソリューションズ インコーポレイテッドＭｏｔｏｒｏｌａ Ｓｏｌｕｔｉｏｎｓ， Ｉｎｃ． Double reverse winding antenna for communication equipment
USD936252S1 (en) 2018-10-17 2021-11-16 Hamamatsu Photonics K.K. Auxiliary electrode portion for a flash lamp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216436A (en) * 1991-05-31 1993-06-01 Harris Corporation Collapsible, low visibility, broadband tapered helix monopole antenna
SE468917B (en) * 1991-08-16 1993-04-05 Ericsson Ge Mobile Communicat MINIATURE ANTENNA
US5708445A (en) * 1993-01-29 1998-01-13 Motorola, Inc. Antenna assembly for radio circuit and method therefor
FR2711277B1 (en) * 1993-10-14 1995-11-10 Alcatel Mobile Comm France Antenna of the type for portable radio device, method of manufacturing such an antenna and portable radio device comprising such an antenna.
SE9701505L (en) * 1997-04-21 1998-10-22 Lars Wendel Device at an antenna
JP3792884B2 (en) * 1997-11-27 2006-07-05 株式会社ヨコオ antenna
WO2000046874A1 (en) * 1999-02-04 2000-08-10 Maxrad, Inc. Compact wideband antenna

Also Published As

Publication number Publication date
DE60211003T2 (en) 2006-09-28
GB2380323B (en) 2003-11-05
DE60211003D1 (en) 2006-06-01
GB2380323A (en) 2003-04-02
WO2003030302A1 (en) 2003-04-10
EP1435125A1 (en) 2004-07-07
ES2260461T3 (en) 2006-11-01
EP1435125B1 (en) 2006-04-26
ATE324681T1 (en) 2006-05-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20120929