NO992711L - Tobånds antennekopler for baerbar radiotelefon, saerlig mobiltelefon - Google Patents

Tobånds antennekopler for baerbar radiotelefon, saerlig mobiltelefon

Info

Publication number
NO992711L
NO992711L NO992711A NO992711A NO992711L NO 992711 L NO992711 L NO 992711L NO 992711 A NO992711 A NO 992711A NO 992711 A NO992711 A NO 992711A NO 992711 L NO992711 L NO 992711L
Authority
NO
Norway
Prior art keywords
antenna
portable
radio telephone
portable radio
antenna coupler
Prior art date
Application number
NO992711A
Other languages
English (en)
Other versions
NO992711D0 (no
Inventor
David Maldonado
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of NO992711D0 publication Critical patent/NO992711D0/no
Publication of NO992711L publication Critical patent/NO992711L/no

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
    • H01Q1/246Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • 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
    • 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
    • H01Q1/27Adaptation for use in or on movable bodies
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/27Adaptation for use in or on movable bodies
    • H01Q1/32Adaptation for use in or on road or rail vehicles
    • 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
    • H01Q5/10Resonant 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
    • H04B1/3877Arrangements for enabling portable transceivers to be used in a fixed position, e.g. cradles or boosters
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38Impedance-matching networks
    • H03H2007/386Multiple band impedance matching
    • 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
    • H04B1/06Receivers
    • H04B1/16Circuits
    • H04B1/18Input circuits, e.g. for coupling to an antenna or a transmission line
    • 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
    • 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
    • H04B1/40Circuits
    • H04B1/403Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Support Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Telephone Set Structure (AREA)

Abstract

Tobånds antennekopler (100) for bruk i en adapter for bærbar radiotelefon (200 ). Flere buede bånd av metall (204a-c) er anbrakt på en jordingsplate (102), hvor minst to av de flere buede bånd. (204a, 204b) av metall er elektrisk iso-lert fra jordingsplaten (102), slik at radiofrekvenssignalene (RF) koples til og fra antennen (204) på den bærbare radiotelefonen. De isolerte buede bånd-ene (204a, 204b) av metall kopler RF-signaler mellom antennen (204) på den bærbare telefon og første og andre til-pasningskretser (602, 604), konstruert for å tilpasse den bærbare radiotele-fonens antenne (204) til hvert av de respektive frekvensbåndene. En vender. (606) koplet til utgangen av tilpasn-ingskretsene (602, 604) velger aktuell tilpasningskretsutgang for tilkopling til en ekstern antenne (304).apteren omfatter også minst en jordingspinne (204a-c) montert på jordingsplaten. (102). Når den bærbare radiotelefon. (200) er koplet til antennekopleren. (100), oppnår jordingspinnen (206a-c) elektrisk kontakt med en jordingsrefer-anseforbindelse på den bærbare radiotelefonen (202a, 202b, 208).
NO992711A 1996-12-04 1999-06-03 Tobånds antennekopler for baerbar radiotelefon, saerlig mobiltelefon NO992711L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/760,024 US5852421A (en) 1996-04-02 1996-12-04 Dual-band antenna coupler for a portable radiotelephone
PCT/US1997/021600 WO1998025323A1 (en) 1996-12-04 1997-11-25 Dual-band antenna coupler for a portable radiotelephone

Publications (2)

Publication Number Publication Date
NO992711D0 NO992711D0 (no) 1999-06-03
NO992711L true NO992711L (no) 1999-08-02

Family

ID=25057826

Family Applications (1)

Application Number Title Priority Date Filing Date
NO992711A NO992711L (no) 1996-12-04 1999-06-03 Tobånds antennekopler for baerbar radiotelefon, saerlig mobiltelefon

Country Status (12)

Country Link
US (1) US5852421A (no)
EP (1) EP0941556A1 (no)
JP (1) JP2001505743A (no)
KR (1) KR20000069293A (no)
CN (1) CN1240055A (no)
AU (1) AU724641B2 (no)
BR (1) BR9713825A (no)
CA (1) CA2273091C (no)
IL (1) IL130011A (no)
NO (1) NO992711L (no)
RU (1) RU2208298C2 (no)
WO (1) WO1998025323A1 (no)

Families Citing this family (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1084973C (zh) * 1995-09-15 2002-05-15 西门子公司 具有多个频段的无线电装置
DE19732639C1 (de) * 1997-07-29 1999-01-28 Wavetek Gmbh Antennenkoppler zum Testen von Mobiltelefonen
US6057779A (en) * 1997-08-14 2000-05-02 Micron Technology, Inc. Method of controlling access to a movable container and to a compartment of a vehicle, and a secure cargo transportation system
US6134421A (en) * 1997-09-10 2000-10-17 Qualcomm Incorporated RF coupler for wireless telephone cradle
US6075976A (en) * 1997-09-12 2000-06-13 Lucent Technologies, Inc. Communication apparatus comprising two units and means for supporting one unit on the other
US5986608A (en) * 1998-04-02 1999-11-16 Lucent Technologies Inc. Antenna coupler for portable telephone
US5969681A (en) * 1998-06-05 1999-10-19 Ericsson Inc. Extended bandwidth dual-band patch antenna systems and associated methods of broadband operation
US6336036B1 (en) * 1998-07-08 2002-01-01 Ericsson Inc. Retractable dual-band tapped helical radiotelephone antennas
US6195052B1 (en) * 1999-02-10 2001-02-27 Motorola Electronics Sdn Bhd Radio communication device
US8636648B2 (en) 1999-03-01 2014-01-28 West View Research, Llc Endoscopic smart probe
US10973397B2 (en) 1999-03-01 2021-04-13 West View Research, Llc Computerized information collection and processing apparatus
JP3490017B2 (ja) 1999-03-18 2004-01-26 松下電器産業株式会社 無線端末装置
US8065155B1 (en) 1999-06-10 2011-11-22 Gazdzinski Robert F Adaptive advertising apparatus and methods
US6215446B1 (en) * 1999-07-23 2001-04-10 Centurion Wireless Technologies, Inc. Snap-in antenna
US7710273B2 (en) * 1999-09-02 2010-05-04 Round Rock Research, Llc Remote communication devices, radio frequency identification devices, wireless communication systems, wireless communication methods, radio frequency identification device communication methods, and methods of forming a remote communication device
US6496708B1 (en) * 1999-09-15 2002-12-17 Motorola, Inc. Radio frequency coupler apparatus suitable for use in a multi-band wireless communication device
US6430517B1 (en) * 1999-10-05 2002-08-06 Ericsson Inc. Circuits, user terminals, and methods for determining information associated with pin limited devices using excitations of different frequencies
US6292144B1 (en) 1999-10-15 2001-09-18 Northwestern University Elongate radiator conformal antenna for portable communication devices
GB2360393B (en) * 2000-03-16 2002-09-25 Motorola Israel Ltd Radio device having an antenna for use with an adaptor and a method and apparatus using the same
SE523526C2 (sv) 2000-07-07 2004-04-27 Smarteq Wireless Ab Adapterantenn avsedd att samverka elektromagnetiskt med en antenn inbyggd i en mobiltelefon
SE524825C2 (sv) * 2001-03-07 2004-10-12 Smarteq Wireless Ab Antennkopplingsanordning samverkande med en intern första antenn anordnad i en kommunikationsanordning
GB2374203A (en) * 2001-04-06 2002-10-09 Alexander Dodd Transmit / receive antenna system with higher receive gain
FR2824696A1 (fr) * 2001-05-10 2002-11-15 Koninkl Philips Electronics Nv Boitier de protection d'un appareil electronique, procede et outillage de fabrication d'un tel boitier
DE10129408A1 (de) * 2001-06-19 2003-01-02 Rohde & Schwarz Antennenkoppler
KR20030002452A (ko) * 2001-06-29 2003-01-09 엘지전자 주식회사 이동통신 단말기의 3 밴드 수신주파수 회로
US7366466B2 (en) * 2001-11-21 2008-04-29 Mineral Lassen Llc Wireless communication device interconnectivity
GB0209959D0 (en) * 2002-05-01 2002-06-05 Koninkl Philips Electronics Nv Improvements in or relating to wireless terminals
US7010325B1 (en) 2002-06-11 2006-03-07 Sprint Spectrum L.P. Wireless repeater with wireless telephone adapter
CN1759504A (zh) * 2003-03-25 2006-04-12 奥蒂通电缆有限公司沙因费尔德分公司 用于移动无线电终端的天线耦合器和固定器
DE10318296B3 (de) * 2003-04-23 2005-01-13 Audioton Kabelwerk Gmbh Fahrzeug-Mobilfunkhalterung
US20040263279A1 (en) * 2003-06-24 2004-12-30 Jocher Ronald W. Coupling device for facilitating communications between a physical line and a wireless terminal
US7427024B1 (en) 2003-12-17 2008-09-23 Gazdzinski Mark J Chattel management apparatus and methods
FI20055420A0 (fi) 2005-07-25 2005-07-25 Lk Products Oy Säädettävä monikaista antenni
FI119009B (fi) 2005-10-03 2008-06-13 Pulse Finland Oy Monikaistainen antennijärjestelmä
FI118782B (fi) 2005-10-14 2008-03-14 Pulse Finland Oy Säädettävä antenni
US8920343B2 (en) 2006-03-23 2014-12-30 Michael Edward Sabatino Apparatus for acquiring and processing of physiological auditory signals
US8618990B2 (en) 2011-04-13 2013-12-31 Pulse Finland Oy Wideband antenna and methods
FI20075269A0 (fi) 2007-04-19 2007-04-19 Pulse Finland Oy Menetelmä ja järjestely antennin sovittamiseksi
FI120427B (fi) 2007-08-30 2009-10-15 Pulse Finland Oy Säädettävä monikaista-antenni
US8457697B2 (en) * 2007-11-14 2013-06-04 Telefonaktiebolaget Lm Ericsson (Publ) Antenna switching arrangement
US8857191B2 (en) * 2008-10-08 2014-10-14 The Invention Science Fund I, Llc Hybrid propulsive engine including at least one independently rotatable propeller/fan
TWI376058B (en) * 2009-02-23 2012-11-01 Htc Corp An antenna with double groundings
CN101640949B (zh) * 2009-06-29 2012-07-25 惠州Tcl移动通信有限公司 多天线无线收发装置
JP5351647B2 (ja) * 2009-07-30 2013-11-27 株式会社エヌ・ティ・ティ・ドコモ 補助アンテナ結合器
FI20096134A0 (fi) 2009-11-03 2009-11-03 Pulse Finland Oy Säädettävä antenni
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 (fi) 2010-02-18 2011-08-19 Pulse Finland Oy Kuorisäteilijällä varustettu antenni
US9406998B2 (en) 2010-04-21 2016-08-02 Pulse Finland Oy Distributed multiband antenna and methods
DE102010026698A1 (de) * 2010-07-07 2012-01-12 Funkwerk Dabendorf Gmbh Anordnung zur drahtlosen Ankopplung eines Funkgerätes
US8228251B1 (en) 2010-08-23 2012-07-24 University Of Central Florida Research Foundation, Inc. Ultra-wideband, low profile antenna
US8559869B2 (en) 2011-09-21 2013-10-15 Daniel R. Ash, JR. Smart channel selective repeater
GB2484542B (en) 2010-10-15 2015-04-29 Microsoft Technology Licensing Llc LTE antenna pair for mimo/diversity operation in the LTE/GSM bands
FI20115072A0 (fi) 2011-01-25 2011-01-25 Pulse Finland Oy Moniresonanssiantenni, -antennimoduuli ja radiolaite
US9673507B2 (en) 2011-02-11 2017-06-06 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US8648752B2 (en) 2011-02-11 2014-02-11 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
TW201324941A (zh) * 2011-12-08 2013-06-16 Asustek Comp Inc 電子系統及其第二電子裝置
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
US10079428B2 (en) 2013-03-11 2018-09-18 Pulse Finland Oy Coupled antenna structure and methods
US9647338B2 (en) 2013-03-11 2017-05-09 Pulse Finland Oy Coupled antenna structure and methods
US9711863B2 (en) 2013-03-13 2017-07-18 Microsoft Technology Licensing, Llc Dual band WLAN coupled radiator antenna
US9431712B2 (en) 2013-05-22 2016-08-30 Wisconsin Alumni Research Foundation Electrically-small, low-profile, ultra-wideband antenna
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
US9337540B2 (en) 2014-06-04 2016-05-10 Wisconsin Alumni Research Foundation Ultra-wideband, low profile antenna
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
US9812757B2 (en) * 2014-12-10 2017-11-07 Skyworks Solutions, Inc. RF coupler having coupled line with adjustable length
US9906260B2 (en) 2015-07-30 2018-02-27 Pulse Finland Oy Sensor-based closed loop antenna swapping apparatus and methods
WO2018126247A2 (en) 2017-01-02 2018-07-05 Mojoose, Inc. Automatic signal strength indicator and automatic antenna switch

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349405A (en) * 1964-07-22 1967-10-24 Bel Tronics Corp Antenna mounting article
US3337280A (en) * 1965-10-23 1967-08-22 Gen Electric Television receiver cabinet including device for isolating antenna
DE2821070A1 (de) * 1978-05-13 1979-11-22 Hagenuk Neufeldt Kuhnke Gmbh Verfahren zum koppeln von zwei sendern auf eine antenne, insbesondere zur erzeugung von unabhaengigen seitenband- sendungen
US5343214A (en) * 1983-09-23 1994-08-30 The Allen Telecom Group, Inc. Cellular mobile communications antenna
US4654669A (en) * 1983-12-20 1987-03-31 Bsh Electronics, Ltd. Electrical signal separating device for window antenna having isolating and matching circuitry
US5158483A (en) * 1988-01-11 1992-10-27 Motorola, Inc. Antenna connector and concealed test jack
US5168282A (en) * 1989-06-22 1992-12-01 Texas Instruments Deutschland Gmbh Antenna resonant circuit
EP0522806B1 (en) * 1991-07-08 1996-11-20 Nippon Telegraph And Telephone Corporation Retractable antenna system
US5304998A (en) * 1992-05-13 1994-04-19 Hazeltine Corporation Dual-mode communication antenna
US5493702A (en) * 1993-04-05 1996-02-20 Crowley; Robert J. Antenna transmission coupling arrangement
WO1995013668A1 (en) * 1993-11-09 1995-05-18 Motorola Inc. Electronic antenna switching system
GB2296406B (en) * 1994-12-15 1998-10-14 Nokia Mobile Phones Ltd Radio telephone
JPH08172377A (ja) * 1994-12-19 1996-07-02 Mitsubishi Electric Corp アンテナ切換回路
US5557287A (en) * 1995-03-06 1996-09-17 Motorola, Inc. Self-latching antenna field coupler
US5652599A (en) * 1995-09-11 1997-07-29 Qualcomm Incorporated Dual-band antenna system
US5710984A (en) * 1995-10-20 1998-01-20 Sharp Microelectronics Technology, Inc. Radio transceiver with impedance matched test port

Also Published As

Publication number Publication date
RU2208298C2 (ru) 2003-07-10
KR20000069293A (ko) 2000-11-25
AU724641B2 (en) 2000-09-28
BR9713825A (pt) 2000-03-14
CA2273091A1 (en) 1998-06-11
AU5457298A (en) 1998-06-29
JP2001505743A (ja) 2001-04-24
WO1998025323A1 (en) 1998-06-11
CA2273091C (en) 2004-06-29
IL130011A (en) 2003-02-12
US5852421A (en) 1998-12-22
CN1240055A (zh) 1999-12-29
NO992711D0 (no) 1999-06-03
EP0941556A1 (en) 1999-09-15
IL130011A0 (en) 2000-02-29

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