FI113214B - Enkel dubbelfrekvensantenn - Google Patents

Enkel dubbelfrekvensantenn Download PDF

Info

Publication number
FI113214B
FI113214B FI970297A FI970297A FI113214B FI 113214 B FI113214 B FI 113214B FI 970297 A FI970297 A FI 970297A FI 970297 A FI970297 A FI 970297A FI 113214 B FI113214 B FI 113214B
Authority
FI
Finland
Prior art keywords
antenna
conductor
antenna element
helix
whip
Prior art date
Application number
FI970297A
Other languages
English (en)
Finnish (fi)
Other versions
FI970297A (sv
FI970297A0 (sv
Inventor
Petteri Annamaa
Seppo Raatikainen
Matti Niemi
Original Assignee
Filtronic Lk Oy
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 Filtronic Lk Oy filed Critical Filtronic Lk Oy
Priority to FI970297A priority Critical patent/FI113214B/sv
Publication of FI970297A0 publication Critical patent/FI970297A0/sv
Priority to CA002226430A priority patent/CA2226430A1/en
Priority to AU51820/98A priority patent/AU5182098A/en
Priority to US09/010,860 priority patent/US6140973A/en
Priority to DE69839659T priority patent/DE69839659D1/de
Priority to JP10010912A priority patent/JPH10224139A/ja
Priority to EP98300487A priority patent/EP0855759B1/en
Publication of FI970297A publication Critical patent/FI970297A/sv
Application granted granted Critical
Publication of FI113214B publication Critical patent/FI113214B/sv

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/362Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/28Combinations of substantially independent non-interacting antenna units or systems
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/29Combinations of different interacting antenna units for giving a desired directional characteristic
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364Creating multiple current paths
    • H01Q5/371Branching current paths
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/16Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/16Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/18Vertical disposition of the antenna
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/16Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/20Two collinear substantially straight active elements; Substantially straight single active elements
    • H01Q9/22Rigid rod or equivalent tubular element or elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/16Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H01Q9/27Spiral antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827Portable transceivers
    • H04B1/3833Hand-held transceivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Claims (11)

1. Antennkonstruktion, innefattande en matarledare (11,21) och ett antennelement (12, 22, 24, 25, 26, 27), varvid antennelementet har en första ände och en andra ände, kännetecknad av att matarledaren tili väsentliga delar är 15 elektriskt oskyddad och ansluts tili antennelementets tappningspunkt (13, 23), som är belägen mellan nämnda första ände och andra ände och som delar antennelementet i tvä delar med elektriskt olika längder.
2. Antennkonstruktion enligt patentkrav 1, kännetecknad av att antennelementet 20 är en cylinderspolledare (12).
· 3. Antennkonstruktion enligt patentkrav 2, kännetecknad av att nämnda cylinderspolledare pä tappningspunkten innefattar ett avsnitt som är spändare vridet ; än resten av cylinderspolledaren, vid vilken matarledarens ände är fäst. > 25
4. Antennkonstruktion enligt patentkrav 1, kännetecknad av att antennelementet är en rak ledare (22).
5. Antennkonstruktion enligt patentkrav 1, kännetecknad av att antennelementet 30 är ett ledarmönster bildat pä ytan av ett dielektriskt medium.
» : 6. Antennkonstruktion enligt patentkrav 1, kännetecknad av att antennelementet : är en seriekoppling bildad av en cylinderspolledare (24, 26) och ätminstone en rak ledare (25, 27). \ 35 > ♦
7. Antennkonstruktion enligt patentkrav 6, kännetecknad av att tappningspunkten (23) är i knutpunkten av nämnda cylinderspolledare (26) och nämnda ätminstone ena raka ledare (27). 113214
8. Antennkonstruktion enligt patentkrav 6, kännetecknad av att tappningspunkten är mellan ändarna av nämnda cylinderspolledare (24).
9. Antennkonstruktion enligt patentkrav 1, kännetecknad av att den dessutom 5 innefattar ett andra antennelement (60a), som är rörligt i förhällande till nämnda första antennelement.
10. Antennkonstruktion enligt patentkrav 9, kännetecknad av att nämnda andra antennelement är ett spöelement, vilket är rörligt parallellt med sin längdaxel i 10 förhällande tili det första antennelementet mellan ett första ytterläge och ett andra ytterläge.
11. Antennkonstruktion enligt patentkrav 10, kännetecknad av att spöelementet kopplas (67) i nämnda första ytterläge tili nämnda matarledare, varvid den elektriska 15 längden av seriekopplingen bildad av matarledaren och spöelementet är väsentligt den samma som den elektriska längden av seriekopplingen bildad av matarledaren och den andra olika länga delen av nämnda antennelement. ? * 1 · * » *
FI970297A 1997-01-24 1997-01-24 Enkel dubbelfrekvensantenn FI113214B (sv)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FI970297A FI113214B (sv) 1997-01-24 1997-01-24 Enkel dubbelfrekvensantenn
CA002226430A CA2226430A1 (en) 1997-01-24 1998-01-07 Simple dual-frequency antenna
AU51820/98A AU5182098A (en) 1997-01-24 1998-01-13 Simple dual-frequency antenna
US09/010,860 US6140973A (en) 1997-01-24 1998-01-22 Simple dual-frequency antenna
DE69839659T DE69839659D1 (de) 1997-01-24 1998-01-23 Einfache Antenne für zwei Frequenzen
JP10010912A JPH10224139A (ja) 1997-01-24 1998-01-23 2重周波数アンテナ
EP98300487A EP0855759B1 (en) 1997-01-24 1998-01-23 Simple dual-frequency antenna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI970297 1997-01-24
FI970297A FI113214B (sv) 1997-01-24 1997-01-24 Enkel dubbelfrekvensantenn

Publications (3)

Publication Number Publication Date
FI970297A0 FI970297A0 (sv) 1997-01-24
FI970297A FI970297A (sv) 1998-07-25
FI113214B true FI113214B (sv) 2004-03-15

Family

ID=8547803

Family Applications (1)

Application Number Title Priority Date Filing Date
FI970297A FI113214B (sv) 1997-01-24 1997-01-24 Enkel dubbelfrekvensantenn

Country Status (7)

Country Link
US (1) US6140973A (sv)
EP (1) EP0855759B1 (sv)
JP (1) JPH10224139A (sv)
AU (1) AU5182098A (sv)
CA (1) CA2226430A1 (sv)
DE (1) DE69839659D1 (sv)
FI (1) FI113214B (sv)

Families Citing this family (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU9657998A (en) * 1997-10-28 1999-05-17 Telefonaktiebolaget Lm Ericsson (Publ) Multiple band, multiple branch antenna for mobile phone
US6310578B1 (en) * 1997-10-28 2001-10-30 Telefonaktiebolaget Lm Ericsson (Publ) Multiple band telescope type antenna for mobile phone
US6329962B2 (en) 1998-08-04 2001-12-11 Telefonaktiebolaget Lm Ericsson (Publ) Multiple band, multiple branch antenna for mobile phone
US6336036B1 (en) * 1998-07-08 2002-01-01 Ericsson Inc. Retractable dual-band tapped helical radiotelephone antennas
US6166694A (en) * 1998-07-09 2000-12-26 Telefonaktiebolaget Lm Ericsson (Publ) Printed twin spiral dual band antenna
US6353443B1 (en) 1998-07-09 2002-03-05 Telefonaktiebolaget Lm Ericsson (Publ) Miniature printed spiral antenna for mobile terminals
KR100299026B1 (ko) * 1998-09-11 2001-09-22 윤종용 신장가능한소형안테나
US6343208B1 (en) 1998-12-16 2002-01-29 Telefonaktiebolaget Lm Ericsson (Publ) Printed multi-band patch antenna
CN1162940C (zh) * 1999-04-21 2004-08-18 西门子公司 天线,这种天线的应用和制造这种天线的方法
GB2351849A (en) * 1999-05-27 2001-01-10 Motorola Inc Multi-band helical antenna with varying pitch
FR2794574A1 (fr) * 1999-06-02 2000-12-08 Socapex Amphenol Systeme d'antenne retractable bi-bande
KR20010075520A (ko) * 1999-08-03 2001-08-09 요트.게.아. 롤페즈 듀얼 안테나 및 이 안테나가 제공된 무선 디바이스
SE516485C2 (sv) * 2000-02-18 2002-01-22 Allgon Ab En kontaktanordning innefattande ett första strålande element i ett stycke därav, en antennanordning innefattande en sådan kontaktanordning, och en handhållen radiokommunikationsanordning innefattande nämnda antennanordning.
US6369775B1 (en) * 2000-09-25 2002-04-09 Amphenol-T&M Antennas Antenna assembly and multiband stubby antenna
US6337663B1 (en) * 2001-01-02 2002-01-08 Auden Techno Corp. Built-in dual frequency antenna
US6452555B1 (en) * 2001-01-24 2002-09-17 Auden Techno Corp. Multi-frequency helix antenna
US6559811B1 (en) * 2002-01-22 2003-05-06 Motorola, Inc. Antenna with branching arrangement for multiple frequency bands
GB2389232B (en) * 2002-06-01 2004-10-27 Motorola Inc Multi-frequency band antenna and methods of tuning and manufacture
AU2003233168A1 (en) * 2002-06-06 2003-12-22 Galtronics Ltd. Multi-band improvements to a monopole helical_antenna
US6798388B2 (en) * 2002-12-23 2004-09-28 Centurion Wireless Technologies, Inc. Stubby, multi-band, antenna having a large-diameter high frequency radiating/receiving element surrounding a small-diameter low frequency radiating/receiving element
US7161538B2 (en) * 2004-05-24 2007-01-09 Amphenol-T&M Antennas Multiple band antenna and antenna assembly
EP1763905A4 (en) 2004-06-28 2012-08-29 Pulse Finland Oy ANTENNA COMPONENT
TWI283086B (en) * 2004-09-08 2007-06-21 Inventec Appliances Corp Multi-mode and multi-band combing antenna
TWI280685B (en) * 2004-10-29 2007-05-01 Benq Corp Antenna device and method for designing the same
CN100421300C (zh) * 2004-11-30 2008-09-24 明基电通股份有限公司 天线装置及其设计方法
US7202836B2 (en) * 2005-05-06 2007-04-10 Motorola, Inc. Antenna apparatus and method of forming same
FI20055420A0 (sv) 2005-07-25 2005-07-25 Lk Products Oy Reglerbar flerbandsantenn
FI119009B (sv) 2005-10-03 2008-06-13 Pulse Finland Oy Flerbandsantennsystem
FI119535B (sv) * 2005-10-03 2008-12-15 Pulse Finland Oy Flerbandsantennsystem
FI118872B (sv) 2005-10-10 2008-04-15 Pulse Finland Oy Inbyggd antenn
FI118782B (sv) 2005-10-14 2008-03-14 Pulse Finland Oy Reglerbar antenn
FI119577B (sv) * 2005-11-24 2008-12-31 Pulse Finland Oy Flerbandsantennkomponent
US8618990B2 (en) 2011-04-13 2013-12-31 Pulse Finland Oy Wideband antenna and methods
US10211538B2 (en) 2006-12-28 2019-02-19 Pulse Finland Oy Directional antenna apparatus and methods
TWI337426B (en) * 2007-03-20 2011-02-11 Wistron Neweb Corp Portable electronic device with function of receiving and radiating rf signal and multi-frenquency antenna thereof
FI20075269A0 (sv) 2007-04-19 2007-04-19 Pulse Finland Oy Förfarande och system för anpassning av en antenn
FI120427B (sv) 2007-08-30 2009-10-15 Pulse Finland Oy Reglerbar flerbandsantenn
US8248323B2 (en) * 2008-05-30 2012-08-21 Motorola Solutions, Inc. Antenna and method of forming same
WO2011011923A1 (zh) * 2009-07-31 2011-02-03 海能达通信股份有限公司 双频天线
FI20096134A0 (sv) 2009-11-03 2009-11-03 Pulse Finland Oy Reglerbar antenn
FI20096251A0 (sv) 2009-11-27 2009-11-27 Pulse Finland Oy MIMO-antenn
US8847833B2 (en) 2009-12-29 2014-09-30 Pulse Finland Oy Loop resonator apparatus and methods for enhanced field control
FI20105158A (sv) 2010-02-18 2011-08-19 Pulse Finland Oy Med skalstrålare försedd antenn
US9406998B2 (en) 2010-04-21 2016-08-02 Pulse Finland Oy Distributed multiband antenna and methods
WO2012037977A1 (en) * 2010-09-23 2012-03-29 Laird Technologies Ab Center offset fed multiband monopole antenna and portable radio communication device comprising such an antena
GB201016378D0 (en) * 2010-09-30 2010-11-10 Ginn Kenneth R Compact helical asymmetric dipole antenna
FI20115072A0 (sv) 2011-01-25 2011-01-25 Pulse Finland Oy Multiresonansantenn, -antennmodul och radioanordning
US8648752B2 (en) 2011-02-11 2014-02-11 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US9673507B2 (en) 2011-02-11 2017-06-06 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US8866689B2 (en) 2011-07-07 2014-10-21 Pulse Finland Oy Multi-band antenna and methods for long term evolution wireless system
US9450291B2 (en) 2011-07-25 2016-09-20 Pulse Finland Oy Multiband slot loop antenna apparatus and methods
US9123990B2 (en) 2011-10-07 2015-09-01 Pulse Finland Oy Multi-feed antenna apparatus and methods
US9531058B2 (en) 2011-12-20 2016-12-27 Pulse Finland Oy Loosely-coupled radio antenna apparatus and methods
US9484619B2 (en) 2011-12-21 2016-11-01 Pulse Finland Oy Switchable diversity antenna apparatus and methods
US8988296B2 (en) 2012-04-04 2015-03-24 Pulse Finland Oy Compact polarized antenna and methods
US9979078B2 (en) 2012-10-25 2018-05-22 Pulse Finland Oy Modular cell antenna apparatus and methods
US10069209B2 (en) 2012-11-06 2018-09-04 Pulse Finland Oy Capacitively coupled antenna apparatus and methods
US9647338B2 (en) 2013-03-11 2017-05-09 Pulse Finland Oy Coupled antenna structure and methods
US10079428B2 (en) 2013-03-11 2018-09-18 Pulse Finland Oy Coupled antenna structure and methods
US9634383B2 (en) 2013-06-26 2017-04-25 Pulse Finland Oy Galvanically separated non-interacting antenna sector apparatus and methods
US9680212B2 (en) 2013-11-20 2017-06-13 Pulse Finland Oy Capacitive grounding methods and apparatus for mobile devices
US9590308B2 (en) 2013-12-03 2017-03-07 Pulse Electronics, Inc. Reduced surface area antenna apparatus and mobile communications devices incorporating the same
US9350081B2 (en) 2014-01-14 2016-05-24 Pulse Finland Oy Switchable multi-radiator high band antenna apparatus
JP6212405B2 (ja) * 2014-02-19 2017-10-11 シャープ株式会社 無線機
US9973228B2 (en) 2014-08-26 2018-05-15 Pulse Finland Oy Antenna apparatus with an integrated proximity sensor and methods
US9948002B2 (en) 2014-08-26 2018-04-17 Pulse Finland Oy Antenna apparatus with an integrated proximity sensor and methods
US9722308B2 (en) 2014-08-28 2017-08-01 Pulse Finland Oy Low passive intermodulation distributed antenna system for multiple-input multiple-output systems and methods of use
US9553360B1 (en) * 2015-07-20 2017-01-24 Getac Technology Corporation Helix antenna device
US9906260B2 (en) 2015-07-30 2018-02-27 Pulse Finland Oy Sensor-based closed loop antenna swapping apparatus and methods
US10230159B2 (en) 2015-11-20 2019-03-12 Shure Acquisition Holdings, Inc. Helical antenna for wireless microphone and method for the same
US10230153B2 (en) 2016-06-20 2019-03-12 Shure Acquisition Holdings, Inc. Secondary antenna for wireless microphone

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050701B (en) * 1979-05-08 1983-08-03 Secr Defence Radio antennae structures
US4442438A (en) * 1982-03-29 1984-04-10 Motorola, Inc. Helical antenna structure capable of resonating at two different frequencies
GB2206243A (en) * 1987-06-24 1988-12-29 Panorama Antennas Ltd Dual-frequency helical antenna
GB2271670B (en) * 1992-10-14 1996-10-16 Nokia Mobile Phones Uk Wideband antenna arrangement
GB2296603B (en) * 1994-12-23 1999-02-17 Nokia Mobile Phones Ltd Retractable top load antenna
JPH11505387A (ja) * 1995-05-19 1999-05-18 モテコ アーベー アンテナアセンブリ
SE509638C2 (sv) * 1996-06-15 1999-02-15 Allgon Ab Meanderantennanordning

Also Published As

Publication number Publication date
FI970297A (sv) 1998-07-25
EP0855759A3 (en) 2000-06-14
JPH10224139A (ja) 1998-08-21
CA2226430A1 (en) 1998-07-24
FI970297A0 (sv) 1997-01-24
EP0855759B1 (en) 2008-07-02
DE69839659D1 (de) 2008-08-14
US6140973A (en) 2000-10-31
EP0855759A2 (en) 1998-07-29
AU5182098A (en) 1998-07-30

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