DK0469741T3 - Radiofrekvensapparat - Google Patents

Radiofrekvensapparat

Info

Publication number
DK0469741T3
DK0469741T3 DK91306417.6T DK91306417T DK0469741T3 DK 0469741 T3 DK0469741 T3 DK 0469741T3 DK 91306417 T DK91306417 T DK 91306417T DK 0469741 T3 DK0469741 T3 DK 0469741T3
Authority
DK
Denmark
Prior art keywords
radio frequency
frequency device
radio
frequency
Prior art date
Application number
DK91306417.6T
Other languages
English (en)
Inventor
Sidney John Branson
Original Assignee
Symmetricon 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
Priority claimed from GB909016929A external-priority patent/GB9016929D0/en
Application filed by Symmetricon Inc filed Critical Symmetricon Inc
Application granted granted Critical
Publication of DK0469741T3 publication Critical patent/DK0469741T3/da

Links

Classifications

    • 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
    • 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
DK91306417.6T 1990-08-02 1991-07-16 Radiofrekvensapparat DK0469741T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909016929A GB9016929D0 (en) 1990-08-02 1990-08-02 Radio frequency apparatus
GB9109190A GB2246910B (en) 1990-08-02 1991-04-29 A radio frequency antenna

Publications (1)

Publication Number Publication Date
DK0469741T3 true DK0469741T3 (da) 1995-08-14

Family

ID=26297427

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91306417.6T DK0469741T3 (da) 1990-08-02 1991-07-16 Radiofrekvensapparat

Country Status (7)

Country Link
US (1) US5191352A (da)
EP (1) EP0469741B1 (da)
JP (1) JPH04234207A (da)
DE (1) DE69109761T2 (da)
DK (1) DK0469741T3 (da)
ES (1) ES2071926T3 (da)
GB (1) GB2246910B (da)

Families Citing this family (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343173A (en) * 1991-06-28 1994-08-30 Mesc Electronic Systems, Inc. Phase shifting network and antenna and method
US5346300A (en) * 1991-07-05 1994-09-13 Sharp Kabushiki Kaisha Back fire helical antenna
US5485170A (en) * 1993-05-10 1996-01-16 Amsc Subsidiary Corporation MSAT mast antenna with reduced frequency scanning
US5594461A (en) * 1993-09-24 1997-01-14 Rockwell International Corp. Low loss quadrature matching network for quadrifilar helix antenna
JP3227631B2 (ja) * 1993-10-12 2001-11-12 株式会社村田製作所 アンテナ
JP3089933B2 (ja) * 1993-11-18 2000-09-18 三菱電機株式会社 アンテナ装置
CA2139198C (en) * 1993-12-28 1998-08-18 Norihiko Ohmuro Broad conical-mode helical antenna
EP0666612B1 (en) * 1994-02-04 2001-10-24 Orbital Sciences Corporation Self-deploying helical structure
US5587719A (en) * 1994-02-04 1996-12-24 Orbital Sciences Corporation Axially arrayed helical antenna
US6011524A (en) * 1994-05-24 2000-01-04 Trimble Navigation Limited Integrated antenna system
GB9417450D0 (en) * 1994-08-25 1994-10-19 Symmetricom Inc An antenna
WO1996018220A1 (en) * 1994-12-06 1996-06-13 Deltec New Zealand Limited A helical antenna
US5635945A (en) * 1995-05-12 1997-06-03 Magellan Corporation Quadrifilar helix antenna
US5610620A (en) * 1995-05-19 1997-03-11 Comant Industries, Inc. Combination antenna
US5708448A (en) * 1995-06-16 1998-01-13 Qualcomm Incorporated Double helix antenna system
US5572172A (en) * 1995-08-09 1996-11-05 Qualcomm Incorporated 180° power divider for a helix antenna
US5793338A (en) * 1995-08-09 1998-08-11 Qualcomm Incorporated Quadrifilar helix antenna and feed network
US5828348A (en) * 1995-09-22 1998-10-27 Qualcomm Incorporated Dual-band octafilar helix antenna
GB9601250D0 (en) * 1996-01-23 1996-03-27 Symmetricom Inc An antenna
GB9603914D0 (en) * 1996-02-23 1996-04-24 Symmetricom Inc An antenna
US7305243B1 (en) 1996-02-28 2007-12-04 Tendler Cellular, Inc. Location based information system
US6519463B2 (en) 1996-02-28 2003-02-11 Tendler Cellular, Inc. Location based service request system
WO1997039493A1 (fr) * 1996-04-16 1997-10-23 Kyocera Corporation Dispositif radio portable
US5721558A (en) * 1996-05-03 1998-02-24 Cta Space Systems, Inc. Deployable helical antenna
US5706019A (en) * 1996-06-19 1998-01-06 Motorola, Inc. Integral antenna assembly for a radio and method of manufacturing
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
US5909196A (en) * 1996-12-20 1999-06-01 Ericsson Inc. Dual frequency band quadrifilar helix antenna systems and methods
US5920292A (en) * 1996-12-20 1999-07-06 Ericsson Inc. L-band quadrifilar helix antenna
FI974350L (fi) 1997-11-27 1999-05-28 Nokia Mobile Phones Ltd Monilankaiset helix-antennit matkaviestinlaitteita varten
SE511450C2 (sv) * 1997-12-30 1999-10-04 Allgon Ab Antennsystem för cirkulärt polariserade radiovågor innefattande antennanordning och gränssnittsnätverk
SE514568C2 (sv) * 1998-05-18 2001-03-12 Allgon Ab Antennanordning omfattande matningsmedel och en handburen radiokommunikationsanordning för en sådan antennanordning
SE514530C2 (sv) * 1998-05-18 2001-03-12 Allgon Ab Antennanordning omfattande kapacitivt kopplade radiotorelement och en handburen radiokommunikationsanordning för en sådan antennanordning
GB9813002D0 (en) 1998-06-16 1998-08-12 Symmetricom Inc An antenna
NO993414L (no) 1998-07-22 2000-01-23 Vistar Telecommunications Inc Integrert antenne
US6107977A (en) * 1998-08-19 2000-08-22 Qualcomm Incorporated Helical antenna assembly and tool for assembling same
JP2000183636A (ja) * 1998-10-09 2000-06-30 Matsushita Electric Ind Co Ltd ヘリカルアンテナ
GB9828768D0 (en) 1998-12-29 1999-02-17 Symmetricom Inc An antenna
GB9902765D0 (en) 1999-02-08 1999-03-31 Symmetricom Inc An antenna
GB9912441D0 (en) 1999-05-27 1999-07-28 Symmetricon Inc An antenna
SE516105C2 (sv) 1999-06-11 2001-11-19 Allgon Ab En metod för att styra strålningsmönstret hos en antenn, ett antennsystem och en radiokommunikationsanordning
US6249260B1 (en) 1999-07-16 2001-06-19 Comant Industries, Inc. T-top antenna for omni-directional horizontally-polarized operation
GB2356086B (en) * 1999-11-05 2003-11-05 Symmetricom Inc Antenna manufacture
IT1321018B1 (it) * 2000-10-10 2003-12-30 Fiat Auto Spa Dispositivo per la ricezione di segnali di posizione secondo il sistema gps.
AUPR452601A0 (en) 2001-04-23 2001-05-24 M & S Smith Pty Ltd Helical antenna
JP2003008335A (ja) * 2001-06-27 2003-01-10 Toshiba Corp アンテナ装置
US20030169210A1 (en) * 2002-01-18 2003-09-11 Barts R. Michael Novel feed structure for quadrifilar helix antenna
US6812906B2 (en) * 2002-05-03 2004-11-02 Harris Corporation Broadband quardifilar helix with high peak gain on the horizon
GB0422179D0 (en) 2004-10-06 2004-11-03 Sarantel Ltd Antenna feed structure
TWI244237B (en) * 2004-11-12 2005-11-21 Emtac Technology Corp Quadri-filar helix antenna structure
US20080272981A1 (en) * 2005-05-27 2008-11-06 Gagne Darryl F Low Profile Helical Planar Radio Antenna with Plural Conductors
EP1900062A1 (en) 2005-06-21 2008-03-19 Sarantel Limited An antenna and an antenna feed structure
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
US7554509B2 (en) * 2006-08-25 2009-06-30 Inpaq Technology Co., Ltd. Column antenna apparatus and method for manufacturing the same
GB2442998B (en) 2006-10-20 2010-01-06 Sarantel Ltd A dielectrically-loaded antenna
GB2444749B (en) 2006-12-14 2009-11-18 Sarantel Ltd A radio communication system
GB2444750B (en) 2006-12-14 2010-04-21 Sarantel Ltd An antenna arrangement
GB2449837B (en) 2006-12-20 2011-09-07 Sarantel Ltd A dielectrically-loaded antenna
US20090051608A1 (en) * 2007-08-20 2009-02-26 Modular Mining Systems, Inc. Combination Omnidirectional Antenna and GPS Antenna for Rugged Applications
US8799861B2 (en) * 2008-01-30 2014-08-05 Intuit Inc. Performance-testing a system with functional-test software and a transformation-accelerator
JP5159428B2 (ja) * 2008-05-22 2013-03-06 三菱電機株式会社 ヘリカルアンテナ
US8106846B2 (en) * 2009-05-01 2012-01-31 Applied Wireless Identifications Group, Inc. Compact circular polarized antenna
US8618998B2 (en) 2009-07-21 2013-12-31 Applied Wireless Identifications Group, Inc. Compact circular polarized antenna with cavity for additional devices
US9276310B1 (en) * 2011-12-31 2016-03-01 Thomas R. Apel Omnidirectional helically arrayed antenna
US9711859B1 (en) 2012-02-10 2017-07-18 Trivec-Avant Corporation Soldier-mounted antenna
CN103138038B (zh) * 2013-02-26 2015-05-27 北京空间飞行器总体设计部 一种测控天线的阻抗匹配方法
TWI511381B (zh) * 2013-10-09 2015-12-01 Wistron Corp 天線
JP6906863B2 (ja) * 2017-10-03 2021-07-21 日本アンテナ株式会社 円偏波アンテナおよびダイバーシティ通信システム
JP6914598B2 (ja) * 2017-10-03 2021-08-04 日本アンテナ株式会社 円偏波アンテナおよびダイバーシティ通信システム
CN108422074B (zh) * 2018-05-11 2023-11-10 天津航天机电设备研究所 一种螺旋焊缝电子束焊接夹具及散热工装
KR102765844B1 (ko) * 2019-06-13 2025-02-11 교세라 에이브이엑스 컴포넌츠(샌디에고)인코포레이티드 튜브 구조 주위에 감긴 가요성 기판에 헬리컬 안테나가 배치된 안테나 어셈블리
US12438260B1 (en) * 2024-12-20 2025-10-07 Saltenna Inc. Surface electromagnetic wave antenna

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482767A (en) * 1943-09-06 1949-09-27 Sperry Corp Broad band antenna
GB840850A (en) * 1955-07-19 1960-07-13 Telefunken Gmbh Improvements relating to high frequency aerial-arrangements
US2835893A (en) * 1956-01-25 1958-05-20 John J Braund Antenna
GB2050701B (en) * 1979-05-08 1983-08-03 Secr Defence Radio antennae structures
US4295144A (en) * 1980-03-31 1981-10-13 Rca Corporation Feed system for a circularly polarized tetra-coil antenna
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
FR2597267B1 (fr) * 1986-04-15 1988-07-22 Alcatel Espace Antenne a haute efficacite
JPS6330006A (ja) * 1986-07-23 1988-02-08 Sony Corp ヘリカルアンテナ
FR2624656B1 (fr) * 1987-12-10 1990-05-18 Centre Nat Etd Spatiales Antenne de type helice et son procede de realisation

Also Published As

Publication number Publication date
DE69109761T2 (de) 1995-09-14
EP0469741A1 (en) 1992-02-05
GB2246910B (en) 1994-12-14
GB2246910A (en) 1992-02-12
ES2071926T3 (es) 1995-07-01
DE69109761D1 (de) 1995-06-22
EP0469741B1 (en) 1995-05-17
GB9109190D0 (en) 1991-06-19
JPH04234207A (ja) 1992-08-21
US5191352A (en) 1993-03-02

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