ATE274755T1 - Antenne - Google Patents

Antenne

Info

Publication number
ATE274755T1
ATE274755T1 AT97301005T AT97301005T ATE274755T1 AT E274755 T1 ATE274755 T1 AT E274755T1 AT 97301005 T AT97301005 T AT 97301005T AT 97301005 T AT97301005 T AT 97301005T AT E274755 T1 ATE274755 T1 AT E274755T1
Authority
AT
Austria
Prior art keywords
core
helical elements
sleeve
rim
antenna
Prior art date
Application number
AT97301005T
Other languages
English (en)
Inventor
Oliver Paul Leisten
Original Assignee
Sarantel 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 Sarantel Ltd filed Critical Sarantel Ltd
Application granted granted Critical
Publication of ATE274755T1 publication Critical patent/ATE274755T1/de

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)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
AT97301005T 1996-02-23 1997-02-17 Antenne ATE274755T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9603914.4A GB9603914D0 (en) 1996-02-23 1996-02-23 An antenna

Publications (1)

Publication Number Publication Date
ATE274755T1 true ATE274755T1 (de) 2004-09-15

Family

ID=10789320

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97301005T ATE274755T1 (de) 1996-02-23 1997-02-17 Antenne

Country Status (10)

Country Link
US (1) US5859621A (de)
EP (1) EP0791978B1 (de)
JP (1) JP3489775B2 (de)
KR (1) KR100348441B1 (de)
AT (1) ATE274755T1 (de)
CA (1) CA2198318C (de)
DE (1) DE69730369T2 (de)
ES (1) ES2224204T3 (de)
GB (2) GB9603914D0 (de)
MX (1) MX9701299A (de)

Families Citing this family (103)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9417450D0 (en) 1994-08-25 1994-10-19 Symmetricom Inc An antenna
FR2751137B1 (fr) * 1996-07-10 1998-11-06 Centre Nat Etd Spatiales Dispositif d'emission a antenne omnidirectionnelle
US6184845B1 (en) * 1996-11-27 2001-02-06 Symmetricom, Inc. Dielectric-loaded antenna
US5909196A (en) * 1996-12-20 1999-06-01 Ericsson Inc. Dual frequency band quadrifilar helix antenna systems and methods
US5896113A (en) * 1996-12-20 1999-04-20 Ericsson Inc. Quadrifilar helix antenna systems and methods for broadband operation in separate transmit and receive frequency bands
US5920292A (en) * 1996-12-20 1999-07-06 Ericsson Inc. L-band quadrifilar helix antenna
GB9722766D0 (en) 1997-10-28 1997-12-24 British Telecomm Portable computers
EP0957533B1 (de) * 1997-12-03 2004-05-06 Mitsubishi Denki Kabushiki Kaisha Antennenkombination
SE514546C2 (sv) 1998-05-18 2001-03-12 Allgon Ab Ett antennsystem och en radiokommunikationsanordning innefattande ett antennsystem
GB9813002D0 (en) * 1998-06-16 1998-08-12 Symmetricom Inc An antenna
GB9828768D0 (en) 1998-12-29 1999-02-17 Symmetricom Inc An antenna
US6169523B1 (en) * 1999-01-13 2001-01-02 George Ploussios Electronically tuned helix radiator choke
GB9902765D0 (en) 1999-02-08 1999-03-31 Symmetricom Inc An antenna
WO2000069022A1 (fr) * 1999-05-07 2000-11-16 Furuno Electric Co., Ltd. Antenne a polarisation circulaire
GB9912441D0 (en) 1999-05-27 1999-07-28 Symmetricon Inc An antenna
GB2383901B (en) * 1999-05-27 2003-12-31 Sarantel Ltd An antenna
GB2356086B (en) 1999-11-05 2003-11-05 Symmetricom Inc Antenna manufacture
JP2001345628A (ja) * 2000-06-02 2001-12-14 Mitsumi Electric Co Ltd ヘリカルアンテナおよびその製造方法、並びにその共振周波数調整方法
US6331836B1 (en) 2000-08-24 2001-12-18 Fast Location.Net, Llc Method and apparatus for rapidly estimating the doppler-error and other receiver frequency errors of global positioning system satellite signals weakened by obstructions in the signal path
JP2002151926A (ja) * 2000-10-02 2002-05-24 Emtac Technology Corp アンテナ
US6882309B2 (en) * 2001-07-18 2005-04-19 Fast Location. Net, Llc Method and system for processing positioning signals based on predetermined message data segment
US9052374B2 (en) 2001-07-18 2015-06-09 Fast Location.Net, Llc Method and system for processing positioning signals based on predetermined message data segment
US6529160B2 (en) 2001-07-18 2003-03-04 Fast Location.Net, Llc Method and system for determining carrier frequency offsets for positioning signals
US6628234B2 (en) * 2001-07-18 2003-09-30 Fast Location.Net, Llc Method and system for processing positioning signals in a stand-alone mode
US6515620B1 (en) 2001-07-18 2003-02-04 Fast Location.Net, Llc Method and system for processing positioning signals in a geometric mode
US8749054B2 (en) 2010-06-24 2014-06-10 L. Pierre de Rochemont Semiconductor carrier with vertical power FET module
US7372427B2 (en) * 2003-03-28 2008-05-13 Sarentel Limited Dielectrically-loaded antenna
GB2399948B (en) * 2003-03-28 2006-06-21 Sarantel Ltd A dielectrically-loaded antenna
GB0505771D0 (en) * 2005-03-21 2005-04-27 Sarantel Ltd Dielectrically-loaded antenna
KR100793646B1 (ko) 2004-07-28 2008-01-11 스카이크로스 인코포레이티드 핸드셋 쿼드리파일러 나선형 안테나 기계적 구조들
WO2006011723A1 (en) * 2004-07-28 2006-02-02 Sk Telecom Co., Ltd. Quadrifilar helical antenna
US7245268B2 (en) * 2004-07-28 2007-07-17 Skycross, Inc. Quadrifilar helical antenna
JP4843611B2 (ja) * 2004-10-01 2011-12-21 デ，ロシェモント，エル．，ピエール セラミックアンテナモジュール及びその製造方法
GB0422179D0 (en) 2004-10-06 2004-11-03 Sarantel Ltd Antenna feed structure
GB2420230B (en) * 2004-11-11 2009-06-03 Sarantel Ltd A dielectrically-loaded antenna
US7253787B2 (en) 2004-11-25 2007-08-07 High Tech Computer, Corp. Helix antenna and method for manufacturing the same
CN100574006C (zh) * 2004-12-17 2009-12-23 宏达国际电子股份有限公司 螺旋式天线及螺旋式天线的制造方法
WO2006136810A1 (en) 2005-06-21 2006-12-28 Sarantel Limited An antenna and an antenna feed structure
US8350657B2 (en) 2005-06-30 2013-01-08 Derochemont L Pierre Power management module and method of manufacture
CN101213638B (zh) 2005-06-30 2011-07-06 L·皮尔·德罗什蒙 电子元件及制造方法
KR100746733B1 (ko) 2005-10-19 2007-08-06 (주) 한맥 Eng 듀얼 폴디드 다이폴형 헤리컬 안테나를 이용한 리더기
US7342554B2 (en) * 2005-11-25 2008-03-11 Inpaq Technology Co., Ltd. Column antenna apparatus and a manufacturing method thereof
US8354294B2 (en) 2006-01-24 2013-01-15 De Rochemont L Pierre Liquid chemical deposition apparatus and process and products therefrom
GB2437998B (en) 2006-05-12 2009-11-11 Sarantel Ltd An antenna system
GB2441566A (en) 2006-09-06 2008-03-12 Sarantel Ltd An antenna and its feed structure
GB2442998B (en) * 2006-10-20 2010-01-06 Sarantel Ltd A dielectrically-loaded antenna
GB0623774D0 (en) * 2006-11-28 2007-01-10 Sarantel Ltd An Antenna Assembly Including a Dielectrically Loaded Antenna
GB2444750B (en) 2006-12-14 2010-04-21 Sarantel Ltd An antenna arrangement
GB2444749B (en) * 2006-12-14 2009-11-18 Sarantel Ltd A radio communication system
GB2449837B (en) * 2006-12-20 2011-09-07 Sarantel Ltd A dielectrically-loaded antenna
GB0700276D0 (en) * 2007-01-08 2007-02-14 Sarantel Ltd A dielectrically-loaded antenna
US20080179275A1 (en) * 2007-01-27 2008-07-31 Kurt Himmelsbach Cap for an NMR sample tube with inner sealing lip
KR100821981B1 (ko) * 2007-02-02 2008-04-15 이성철 무지향성 안테나
JP4290744B2 (ja) * 2007-03-12 2009-07-08 株式会社日本自動車部品総合研究所 アンテナ装置
US7589694B2 (en) * 2007-04-05 2009-09-15 Shakespeare Company, Llc Small, narrow profile multiband antenna
JP4943298B2 (ja) * 2007-11-02 2012-05-30 日本アンテナ株式会社 ヘリカルアンテナ
GB0724157D0 (en) * 2007-12-11 2008-01-23 Pilkington Automotive D Gmbh Antenna
US8089421B2 (en) 2008-01-08 2012-01-03 Sarantel Limited Dielectrically loaded antenna
US7959598B2 (en) 2008-08-20 2011-06-14 Asante Solutions, Inc. Infusion pump systems and methods
GB0815306D0 (en) 2008-08-21 2008-09-24 Sarantel Ltd An antenna and a method of manufacturing an antenna
GB0904307D0 (en) 2009-03-12 2009-04-22 Sarantel Ltd A dielectrically-loaded antenna
GB2468583B (en) 2009-03-12 2013-07-03 Sarantel Ltd A dielectrically loaded antenna
US8106846B2 (en) * 2009-05-01 2012-01-31 Applied Wireless Identifications Group, Inc. Compact circular polarized antenna
US8456375B2 (en) 2009-05-05 2013-06-04 Sarantel Limited Multifilar antenna
US8952858B2 (en) 2009-06-17 2015-02-10 L. Pierre de Rochemont Frequency-selective dipole antennas
US8922347B1 (en) 2009-06-17 2014-12-30 L. Pierre de Rochemont R.F. energy collection circuit for wireless devices
US8618998B2 (en) 2009-07-21 2013-12-31 Applied Wireless Identifications Group, Inc. Compact circular polarized antenna with cavity for additional devices
GB2477289B (en) * 2010-01-27 2014-08-13 Harris Corp A radio communication apparatus having improved resistance to common mode noise
US8552708B2 (en) 2010-06-02 2013-10-08 L. Pierre de Rochemont Monolithic DC/DC power management module with surface FET
US9023493B2 (en) 2010-07-13 2015-05-05 L. Pierre de Rochemont Chemically complex ablative max-phase material and method of manufacture
EP2609626B1 (de) 2010-08-23 2024-04-03 L. Pierre De Rochemont Power-fet mit einem resonanz-transistor-gate
CN103415925A (zh) 2010-11-03 2013-11-27 L·皮尔·德罗什蒙 具有单片集成的量子点器件的半导体芯片载体及其制造方法
GB201108016D0 (en) 2011-05-13 2011-06-29 Sarantel Ltd An antenna and a method of manufacture thereof
GB201109000D0 (en) 2011-05-24 2011-07-13 Sarantel Ltd A dielectricaly loaded antenna
GB201118159D0 (en) 2011-10-20 2011-11-30 Sarantel Ltd Radiofrequency circuit assembly
GB201120466D0 (en) 2011-11-25 2012-01-11 Sarantel Ltd An antenna
GB2508638B (en) * 2012-12-06 2016-03-16 Harris Corp A dielectrically loaded multifilar antenna with a phasing ring feed
US9865914B2 (en) 2013-01-31 2018-01-09 Hewlett-Packard Development Company, L.P. Multi-position display deck and antenna
US9478850B2 (en) * 2013-05-23 2016-10-25 Duracell U.S. Operations, Inc. Omni-directional antenna for a cylindrical body
US9561324B2 (en) 2013-07-19 2017-02-07 Bigfoot Biomedical, Inc. Infusion pump system and method
WO2017123525A1 (en) 2016-01-13 2017-07-20 Bigfoot Biomedical, Inc. User interface for diabetes management system
HK1256995A1 (zh) 2016-01-14 2019-10-11 Bigfoot Biomedical, Inc. 药物输送设备、系统和方法中的阻塞解决方案
US10806859B2 (en) 2016-01-14 2020-10-20 Bigfoot Biomedical, Inc. Adjusting insulin delivery rates
US12383166B2 (en) 2016-05-23 2025-08-12 Insulet Corporation Insulin delivery system and methods with risk-based set points
US10363374B2 (en) 2016-05-26 2019-07-30 Insulet Corporation Multi-dose drug delivery device
US11096624B2 (en) 2016-12-12 2021-08-24 Bigfoot Biomedical, Inc. Alarms and alerts for medication delivery devices and systems
US11033682B2 (en) 2017-01-13 2021-06-15 Bigfoot Biomedical, Inc. Insulin delivery methods, systems and devices
US10500334B2 (en) 2017-01-13 2019-12-10 Bigfoot Biomedical, Inc. System and method for adjusting insulin delivery
EP3568860B1 (de) 2017-01-13 2025-12-10 Insulet Corporation Insulinverabreichungsverfahren, -systeme und -vorrichtungen
US10881792B2 (en) 2017-01-13 2021-01-05 Bigfoot Biomedical, Inc. System and method for adjusting insulin delivery
US10758675B2 (en) 2017-01-13 2020-09-01 Bigfoot Biomedical, Inc. System and method for adjusting insulin delivery
US10583250B2 (en) 2017-01-13 2020-03-10 Bigfoot Biomedical, Inc. System and method for adjusting insulin delivery
USD874471S1 (en) 2017-06-08 2020-02-04 Insulet Corporation Display screen with a graphical user interface
USD928199S1 (en) 2018-04-02 2021-08-17 Bigfoot Biomedical, Inc. Medication delivery device with icons
US12562251B1 (en) 2018-05-09 2026-02-24 Bigfoot Biomedical, Inc. Computing architecture for assuring the provenance of medication therapy related parameters, and related systems, methods and devices
USD920343S1 (en) 2019-01-09 2021-05-25 Bigfoot Biomedical, Inc. Display screen or portion thereof with graphical user interface associated with insulin delivery
CN110247169B (zh) * 2019-06-27 2020-07-28 大连海事大学 一种具有宽波束特性的双频四臂螺旋天线
USD977502S1 (en) 2020-06-09 2023-02-07 Insulet Corporation Display screen with graphical user interface
CA3201894A1 (en) 2020-12-18 2022-06-23 Matthew Alles Integration of a medicament delivery device with a smartwatch and a vehicle infotainment system
US12514980B2 (en) 2021-06-30 2026-01-06 Insulet Corporation Adjustment of medicament delivery by a medicament delivery device based on menstrual cycle phase
US12521486B2 (en) 2021-07-16 2026-01-13 Insulet Corporation Method for modification of insulin delivery during pregnancy in automatic insulin delivery systems
CN113675598A (zh) * 2021-08-23 2021-11-19 长春理工大学 一种四臂螺旋天线
EP4646726A1 (de) 2023-01-06 2025-11-12 Insulet Corporation Automatisch oder manuell initiierte mahlzeitbolusabgabe mit anschliessender automatischer sicherheitseinschränkungsrelaxation

Family Cites Families (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575377A (en) * 1945-11-13 1951-11-20 Robert J Wohl Short wave antenna
US2763003A (en) * 1953-07-01 1956-09-11 Edward F Harris Helical antenna construction
GB762415A (en) * 1954-06-17 1956-11-28 Emi Ltd Improvements in or relating to aerials
GB840850A (en) * 1955-07-19 1960-07-13 Telefunken Gmbh Improvements relating to high frequency aerial-arrangements
US3633210A (en) * 1967-05-26 1972-01-04 Philco Ford Corp Unbalanced conical spiral antenna
CH499888A (fr) * 1967-12-15 1970-11-30 Onera (Off Nat Aerospatiale) Antenne à un seul conducteur enroulé hélicoïdalement de dimensions réduites, et procédé pour sa fabrication
US3906509A (en) * 1974-03-11 1975-09-16 Raymond H Duhamel Circularly polarized helix and spiral antennas
US3940772A (en) * 1974-11-08 1976-02-24 Rca Corporation Circularly polarized, broadside firing tetrahelical antenna
US4008479A (en) * 1975-11-03 1977-02-15 Chu Associates, Inc. Dual-frequency circularly polarized spiral antenna for satellite navigation
US4160979A (en) * 1976-06-21 1979-07-10 National Research Development Corporation Helical radio antennae
US4114164A (en) * 1976-12-17 1978-09-12 Transco Products, Inc. Broadband spiral antenna
US4204212A (en) * 1978-12-06 1980-05-20 The United States Of America As Represented By The Secretary Of The Army Conformal spiral antenna
US4323900A (en) * 1979-10-01 1982-04-06 The United States Of America As Represented By The Secretary Of The Navy Omnidirectional microstrip antenna
US4349824A (en) * 1980-10-01 1982-09-14 The United States Of America As Represented By The Secretary Of The Navy Around-a-mast quadrifilar microstrip antenna
FR2492540A1 (fr) * 1980-10-17 1982-04-23 Schlumberger Prospection Dispositif pour diagraphie electromagnetique dans les forages
US4608572A (en) * 1982-12-10 1986-08-26 The Boeing Company Broad-band antenna structure having frequency-independent, low-loss ground plane
US4608574A (en) * 1984-05-16 1986-08-26 The United States Of America As Represented By The Secretary Of The Air Force Backfire bifilar helix antenna
US4697192A (en) * 1985-04-16 1987-09-29 Texas Instruments Incorporated Two arm planar/conical/helix antenna
JPS6330006A (ja) * 1986-07-23 1988-02-08 Sony Corp ヘリカルアンテナ
JPS6367903A (ja) * 1986-09-10 1988-03-26 Aisin Seiki Co Ltd アンテナ装置
GB8624807D0 (en) * 1986-10-16 1986-11-19 C S Antennas Ltd Antenna construction
SU1483511A1 (ru) * 1986-12-30 1989-05-30 Организация П/Я В-8942 Спиральна антенна
US4862184A (en) * 1987-02-06 1989-08-29 George Ploussios Method and construction of helical antenna
GB2202380A (en) * 1987-03-20 1988-09-21 Philips Electronic Associated Helical antenna
US5081469A (en) * 1987-07-16 1992-01-14 Sensormatic Electronics Corporation Enhanced bandwidth helical antenna
US5258728A (en) * 1987-09-30 1993-11-02 Fujitsu Ten Limited Antenna circuit for a multi-band antenna
US5099249A (en) * 1987-10-13 1992-03-24 Seavey Engineering Associates, Inc. Microstrip antenna for vehicular satellite communications
FR2624656B1 (fr) * 1987-12-10 1990-05-18 Centre Nat Etd Spatiales Antenne de type helice et son procede de realisation
US4940992A (en) * 1988-04-11 1990-07-10 Nguyen Tuan K Balanced low profile hybrid antenna
US4980694A (en) * 1989-04-14 1990-12-25 Goldstar Products Company, Limited Portable communication apparatus with folded-slot edge-congruent antenna
JPH03123203A (ja) * 1989-10-06 1991-05-27 Harada Ind Co Ltd 自動車用三波共用アンテナ
FR2654554B1 (fr) * 1989-11-10 1992-07-31 France Etat Antenne en helice, quadrifilaire, resonnante bicouche.
JP2568281B2 (ja) * 1989-11-17 1996-12-25 原田工業株式会社 自動車用三波共用アンテナ
EP0465658B1 (de) * 1990-01-08 1996-10-16 Toyo Communication Equipment Co. Ltd. Wendelantenne mit geteilter vierdrahtwicklung und verfahren zu deren herstellung
JP2823644B2 (ja) * 1990-03-26 1998-11-11 日本電信電話株式会社 ヘリカルアンテナ
GB2246910B (en) * 1990-08-02 1994-12-14 Polytechnic Electronics Plc A radio frequency antenna
US5198831A (en) * 1990-09-26 1993-03-30 501 Pronav International, Inc. Personal positioning satellite navigator with printed quadrifilar helical antenna
JP3185233B2 (ja) * 1991-03-18 2001-07-09 株式会社日立製作所 携帯無線機用小型アンテナ
FI89646C (fi) * 1991-03-25 1993-10-25 Nokia Mobile Phones Ltd Antennstav och foerfarande foer dess framstaellning
FR2674689B1 (fr) * 1991-03-29 1993-05-21 Ct Reg Innovat Transfert Tech Antenne cylindrique imprimee omnidirectionnelle et repondeur radar maritime utilisant de telles antennes.
JP2719856B2 (ja) * 1991-07-05 1998-02-25 シャープ株式会社 バックファイアヘリカルアンテナ
US5346300A (en) * 1991-07-05 1994-09-13 Sharp Kabushiki Kaisha Back fire helical antenna
US5349365A (en) * 1991-10-21 1994-09-20 Ow Steven G Quadrifilar helix antenna
CA2061743C (en) * 1992-02-24 1996-05-14 Ems Technologies Canada, Ltd. End loaded helix antenna
US5612707A (en) * 1992-04-24 1997-03-18 Industrial Research Limited Steerable beam helix antenna
JP3209569B2 (ja) * 1992-05-11 2001-09-17 原田工業株式会社 車両用三波共用アンテナ
JP3317521B2 (ja) * 1992-07-06 2002-08-26 原田工業株式会社 衛星通信用ヘリカルアンテナの製造方法
US5345248A (en) * 1992-07-22 1994-09-06 Space Systems/Loral, Inc. Staggered helical array antenna
EP0588465A1 (de) * 1992-09-11 1994-03-23 Ngk Insulators, Ltd. Keramisches Dielektrikum für Antennen
JP2809365B2 (ja) * 1992-09-28 1998-10-08 エヌ・ティ・ティ移動通信網株式会社 携帯無線機
US5485170A (en) * 1993-05-10 1996-01-16 Amsc Subsidiary Corporation MSAT mast antenna with reduced frequency scanning
JPH07249973A (ja) * 1994-03-14 1995-09-26 Toshiba Corp 電子機器
US5479180A (en) * 1994-03-23 1995-12-26 The United States Of America As Represented By The Secretary Of The Army High power ultra broadband antenna
US5450093A (en) * 1994-04-20 1995-09-12 The United States Of America As Represented By The Secretary Of The Navy Center-fed multifilar helix antenna
GB2292257B (en) * 1994-06-22 1999-04-07 Sidney John Branson An antenna
GB9417450D0 (en) * 1994-08-25 1994-10-19 Symmetricom Inc An antenna
JP3266466B2 (ja) * 1995-07-26 2002-03-18 京セラ株式会社 ヘリカルアンテナ

Also Published As

Publication number Publication date
MX9701299A (es) 1998-04-30
EP0791978A2 (de) 1997-08-27
ES2224204T3 (es) 2005-03-01
JPH09246858A (ja) 1997-09-19
KR100348441B1 (ko) 2002-12-02
GB9703214D0 (en) 1997-04-09
CA2198318A1 (en) 1997-08-24
GB2310543B (en) 1999-10-06
CA2198318C (en) 2002-10-08
GB9603914D0 (en) 1996-04-24
EP0791978B1 (de) 2004-08-25
US5859621A (en) 1999-01-12
KR970063820A (ko) 1997-09-12
JP3489775B2 (ja) 2004-01-26
DE69730369D1 (de) 2004-09-30
DE69730369T2 (de) 2005-09-01
GB2310543A (en) 1997-08-27
EP0791978A3 (de) 1998-04-01

Similar Documents

Publication Publication Date Title
ATE274755T1 (de) Antenne
FI970759A0 (fi) Antenni
AU753669B2 (en) Dual band antenna for radio terminal
US6169523B1 (en) Electronically tuned helix radiator choke
AU649160B2 (en) Portable radio communication apparatus
EP0776061A3 (de)
GB2367429A (en) Helical antenna for frequencies in exess of 200MHZ
CA2357041A1 (en) An antenna
RU99104172A (ru) Спиральная антенна с изогнутыми сегментами
JPH08316719A (ja) 窓ガラスアンテナ装置
EP0403741A3 (de) Stabförmige Funkantenne
SE506575C2 (sv) Antennanordning med en dielektrisk resonator
Schoepf et al. Numerical investigation of an annular antenna excited by a directional coupler above a conducting screen
FR2721141B1 (fr) Câble coaxial rayonnant haute fréquence.
SE9802715L (sv) Dubbelbandig antennanordning som innefattar helixformade och långsträckta strålande strukturer

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification

Ref document number: 0791978

Country of ref document: EP

REN Ceased due to non-payment of the annual fee