CA2245882A1 - Antenne pour frequences superieures a 200 mhz - Google Patents

Antenne pour frequences superieures a 200 mhz

Info

Publication number
CA2245882A1
CA2245882A1 CA002245882A CA2245882A CA2245882A1 CA 2245882 A1 CA2245882 A1 CA 2245882A1 CA 002245882 A CA002245882 A CA 002245882A CA 2245882 A CA2245882 A CA 2245882A CA 2245882 A1 CA2245882 A1 CA 2245882A1
Authority
CA
Canada
Prior art keywords
core
antenna
central axis
feeder structure
radiation
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
CA002245882A
Other languages
English (en)
Other versions
CA2245882C (fr
Inventor
Oliver Paul Leisten
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.)
Sarantel Ltd
Original Assignee
Individual
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 GBGB9601250.5A external-priority patent/GB9601250D0/en
Application filed by Individual filed Critical Individual
Publication of CA2245882A1 publication Critical patent/CA2245882A1/fr
Application granted granted Critical
Publication of CA2245882C publication Critical patent/CA2245882C/fr
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

Landscapes

  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Burglar Alarm Systems (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)
CA002245882A 1996-01-23 1997-01-10 Antenne pour frequences superieures a 200 mhz Expired - Fee Related CA2245882C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GBGB9601250.5A GB9601250D0 (en) 1996-01-23 1996-01-23 An antenna
GB9601250.5 1996-01-23
GB9610581A GB2309592B (en) 1996-01-23 1996-05-21 An Antenna
GB9610581.2 1996-05-21
PCT/GB1997/000085 WO1997027642A1 (fr) 1996-01-23 1997-01-10 Antenne pour frequences superieures a 200 mhz

Publications (2)

Publication Number Publication Date
CA2245882A1 true CA2245882A1 (fr) 1997-07-31
CA2245882C CA2245882C (fr) 2004-11-09

Family

ID=26308506

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002245882A Expired - Fee Related CA2245882C (fr) 1996-01-23 1997-01-10 Antenne pour frequences superieures a 200 mhz

Country Status (8)

Country Link
EP (1) EP0876688B1 (fr)
JP (1) JP4467642B2 (fr)
CN (1) CN1099721C (fr)
AT (1) ATE242550T1 (fr)
AU (1) AU720873B2 (fr)
CA (1) CA2245882C (fr)
DE (1) DE69722590T2 (fr)
WO (1) WO1997027642A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9813002D0 (en) * 1998-06-16 1998-08-12 Symmetricom Inc An antenna
GB9828768D0 (en) * 1998-12-29 1999-02-17 Symmetricom Inc An antenna
GB9902765D0 (en) * 1999-02-08 1999-03-31 Symmetricom Inc An antenna
DE19923524C1 (de) * 1999-05-21 2001-04-19 Siemens Ag Verfahren zur Herstellung einer Antenne für Sende-/Empfangseinrichtungen
GB9912441D0 (en) * 1999-05-27 1999-07-28 Symmetricon Inc An antenna
GB2420230B (en) * 2004-11-11 2009-06-03 Sarantel Ltd A dielectrically-loaded antenna
GB2444749B (en) * 2006-12-14 2009-11-18 Sarantel Ltd A radio communication system
KR100821981B1 (ko) * 2007-02-02 2008-04-15 이성철 무지향성 안테나
DE102013201685B4 (de) 2013-02-01 2019-04-04 Siemens Healthcare Gmbh Leiteranordnung mit dielektrischer Mantelwellensperre
CN115693106A (zh) * 2022-11-10 2023-02-03 星启空间(南通)通信设备有限公司 一种卫星及星载天线

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442438A (en) * 1982-03-29 1984-04-10 Motorola, Inc. Helical antenna structure capable of resonating at two different frequencies
US5346300A (en) * 1991-07-05 1994-09-13 Sharp Kabushiki Kaisha Back fire helical antenna
US5708445A (en) * 1993-01-29 1998-01-13 Motorola, Inc. Antenna assembly for radio circuit and method therefor
GB9417450D0 (en) * 1994-08-25 1994-10-19 Symmetricom Inc An antenna

Also Published As

Publication number Publication date
JP2000506690A (ja) 2000-05-30
CN1099721C (zh) 2003-01-22
DE69722590T2 (de) 2004-05-06
AU1391997A (en) 1997-08-20
CN1214151A (zh) 1999-04-14
CA2245882C (fr) 2004-11-09
EP0876688A1 (fr) 1998-11-11
EP0876688B1 (fr) 2003-06-04
JP4467642B2 (ja) 2010-05-26
AU720873B2 (en) 2000-06-15
WO1997027642A1 (fr) 1997-07-31
DE69722590D1 (de) 2003-07-10
ATE242550T1 (de) 2003-06-15

Similar Documents

Publication Publication Date Title
MY123075A (en) An antenna
CA2318799C (fr) Antenne double bande pour equipement radioelectrique terminal
JP3406328B2 (ja) 収縮可能アンテナ
CA2116475C (fr) Antenne d'appareil de radiocommunication
KR100299299B1 (ko) 휴대 통신장비용 안테나 장치
GB2311675B (en) Radio communication apparatus
GB2334382A (en) Retractable multi-band antennas
JP2002151949A (ja) 携帯端末機
US6052088A (en) Multi-band antenna
CA2245882A1 (fr) Antenne pour frequences superieures a 200 mhz
CA2267770A1 (fr) Radiotelephone a rendement d'antenne eleve
US5963170A (en) Fixed dual frequency band antenna
AU740076B2 (en) Structure of an antenna for a portable radio communication apparatus
US6239768B1 (en) Dual band retractable antenna system with capacitive coupling
CA2291773A1 (fr) Ensemble antenne et dispositif radio mobile utilisant ladite antenne
AU733260B2 (en) Antenna for portable radio unit
JP3230841B2 (ja) 可変長ホイップアンテナ
JPH07221822A (ja) コードレス電話機
JPH10163736A (ja) アンテナ装置及び携帯無線機
KR100296489B1 (ko) 무선단말기용안테나
JPH1041721A (ja) 携帯通信端末用のアンテナと、それを使用する携帯通信端末
JP2001257516A (ja) アンテナと伸縮アンテナおよび無線機
JP2000151245A (ja) 携帯無線機およびアンテナ装置
JPH10270918A (ja) 携帯無線機用アンテナ
JP2000312107A (ja) 携帯無線機のアンテナ構造

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed