EP0543645A1 - Antenne encastrée pour dispositifs de communication - Google Patents

Antenne encastrée pour dispositifs de communication Download PDF

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Publication number
EP0543645A1
EP0543645A1 EP92310537A EP92310537A EP0543645A1 EP 0543645 A1 EP0543645 A1 EP 0543645A1 EP 92310537 A EP92310537 A EP 92310537A EP 92310537 A EP92310537 A EP 92310537A EP 0543645 A1 EP0543645 A1 EP 0543645A1
Authority
EP
European Patent Office
Prior art keywords
antenna
display
radio
receiving
receiver
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.)
Withdrawn
Application number
EP92310537A
Other languages
German (de)
English (en)
Inventor
Robert L. Growney
Quirino Balzano
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of EP0543645A1 publication Critical patent/EP0543645A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; 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
    • H01Q1/243—Supports; 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 with built-in antennas

Definitions

  • This invention relates generally to antennas, for example to embedded antennas for communication devices.
  • Antennas for portable communication devices are either internal or external. In the latter, a dipole or a loop antenna is externally connected to the communication device via an antenna coupler providing a means for receiving radio frequency signals.
  • antennas are generally printed on a PC board or are placed in a housing in the form of conductive elements.
  • a conventional internal antenna is usually housed in a hollow space enveloped by a housing or casing of a communication device.
  • the use of internal antennas is cosmetically preferred over their external counterparts.
  • These antennas require additional housing volume. As the size of communication devices shrinks the allocation of additional volume to accommodate the antenna becomes less appealing. With external antennas being aesthetically unappealing and internal antennas demanding highly valuable interior radio space, a need exists for an antenna that overcomes the deficiencies of the prior art.
  • a radio communication device having a display terminal.
  • the display terminal includes a glass portion with an antenna located thereon.
  • the radio communication device also includes a receiver for receiving a radio communication signal. Radio communication signals are coupled to the receiver via the antenna.
  • the radio communication device includes a metal frame which operates as its antenna and secures the display terminal to the communication device.
  • glass extends to any transparent or semi-transparent material such as perspex or other plastics material suitable for liquid crystal displays, light emitting displays, flat cathode ray tube displays or other displays.
  • FIG. 1 shows a glass display terminal in accordance with the present invention.
  • FIG. 2 shows a glass display terminal having a metal frame in accordance with the present invention.
  • FIG. 3 is an isometric diagram of a communication device in accordance with the principles of the present invention.
  • FIG. 4 is a block diagram of a communication device in accordance with the principles of the present invention.
  • FIG. 5 shows a predicted radiation pattern of the antenna in accordance with the present invention.
  • a display 100 preferably Liquid Crystal Display (LCD) is shown in accordance with the principles of the present invention.
  • the display 100 includes a glass 102 which includes an active portion 104 where data can be written unto.
  • Connectors 106 are provided to couple the display 100 to other elements of the electronic device in which the display 100 is a part of.
  • Printed on the glass 102 in areas outside the active display area 104 are antennas 108 and 110.
  • Well known technologies including thick film may be used to print the antennas 108 and 110 on the glass 102.
  • the combination of antennas 108 and 110 provides for diversity in the reception of variably polarized waves. The former performs optimally in capturing vertically polarized electromagnetic waves.
  • antennas 108 and 110 can be incorporated in the display 100 individually or in combination. Radio frequency signals are received by the antennas 108 and 110 and fed into appropriate circuitries for further processing.
  • the housing of the electronic device comprising the display 100 normally includes an inner layer of metallic surface to provide shielding for the display 100. This shield which faces the back of the glass 102 can be used by the antennas 108 and 110 for additional gain. The coupling may be accomplished via feed through or clamp through techniques, well known in the art.
  • a display 200 is shown to include a printed circuit board 202 comprising a number of electronic components 208A-208D and a display 204.
  • the electronic components 208A-208D are preferably drivers and support circuitry's to drive the display 204.
  • a frame 206 being preferably metallic, is used to hold the display 204 to the printed circuit board 202.
  • Clamps 210A and 210B are used either alone or in conjunction with other clamps (not shown) to secure the glass 204 to the PC board 202.
  • the electrical connection between the glass 204 and the PC board 202 may be made via any available mullet-pin connectors or elastomers.
  • the frame 206 may be used as an antenna.
  • Radio frequency signals are received by the frame and coupled to the receiver circuitry for decoding.
  • the coupling of the frame 206 to the receiver circuit may be via spring loaded contacts that may be incorporated both on the frame and the receiver. Interruptions in the frame 206 may be made at strategic locations to provide the desired antenna performance at various frequencies.
  • an antenna structure is shown for use in communication devices having display terminals.
  • the preferred embodiment of the present invention takes advantage of the inactive glass areas.
  • Antennas 108 and 110 can be used to receive radio frequency signals without requiring additional space for separately coupled antennas.
  • a metal film may be printed, pasted, sputtered, or plated on the display 100 to form the antennas 108 and 110. The plating may be accomplished via sputtering and then photo defining the pattern on the glass 102.
  • the communication device 300 includes a display section 302, and a keyboard section 304.
  • the display section 302 includes the display 100 with its associated antennas 108 and 110. It can be seen how the flip top design is used to reduce the overall volume of the device 300. It is in line with this size reduction that the benefits of the present invention are observed. In this invention, the integrity of the device 300 as being a small hand held product can be kept without having to forfeit the ability to efficiently receive communication signals.
  • the communication device 300 includes a receiver 408 coupled to the antenna 206 via an antenna coupler 412.
  • a radio frequency signal available at the antenna 206 is coupled to the input of the receiver 408 via the antenna coupler 412.
  • the received radio frequency signal is recovered by the receiver 408 and coupled to the controller for appropriate presentation.
  • Data messages are decoded by the controller 404 and stored or displayed on the display 100.
  • Voice messages are coupled to the speaker 414 via the audio circuit block 410.
  • the audio circuit block 410 contains audio gating circuits which control the gating of audio to the speaker 414. The gating of the audio circuits is controlled by the controller 404.
  • Information entered at the keyboard are coupled to the controller 404 for appropriate processing.
  • the antenna 206 and the display 200 are not included as one block because they are operatively different. Although their mechanical attachment may imply their structure as being one, the electrical coupling is totally different and therefore one will not operationally interfere with the other.
  • FIG. 5 shows a predicted antenna pattern chart 502 in the vertical plane of the antenna of the present invention.
  • the pattern 502 is shown to be relatively symmetrical and substantially above horizon pattern.
  • a top view of the device 300 is shown along with the viewing direction shown by an arrow 504.
  • a loop antenna may be formed by having one of its portions printed on the glass 102 and the remainder of the loop formed around the internal wall of the display section 302. Other antennas may be entirely printed on the glass 102.
  • the actual antenna whether it is printed, plated, or framed is a function of the particular geometry of the device 300 and its operating frequency.
  • Size reduction in electronic devices has always been a major objective of designers. Recently great advances have been realized in reducing the size of electronic components which make the workings of these electronic devices. With these advances, reduction to the size of a credit card has been achieved in some communication devices.
  • the antennas 108, 110, and 206 as described by the principles of the present invention are ideal for such applications.
  • a significant benefit of the present invention is that it is no longer necessary to sacrifice the appearance of the communication device in order to achieve performance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Transceivers (AREA)
  • Details Of Aerials (AREA)
EP92310537A 1991-11-18 1992-11-18 Antenne encastrée pour dispositifs de communication Withdrawn EP0543645A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79408691A 1991-11-18 1991-11-18
US794086 1991-11-18

Publications (1)

Publication Number Publication Date
EP0543645A1 true EP0543645A1 (fr) 1993-05-26

Family

ID=25161662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92310537A Withdrawn EP0543645A1 (fr) 1991-11-18 1992-11-18 Antenne encastrée pour dispositifs de communication

Country Status (2)

Country Link
EP (1) EP0543645A1 (fr)
JP (1) JPH05335826A (fr)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006338A1 (fr) * 1993-08-23 1995-03-02 Apple Computer, Inc. Antenne unipolaire repliee utilisable avec des dispositifs de transmission portatifs
GB2292482A (en) * 1994-08-18 1996-02-21 Plessey Semiconductors Ltd Antenna arrangement
WO1998012771A1 (fr) * 1996-09-18 1998-03-26 Research In Motion Limited Systeme d'antenne pour dispositif rf de transmission de donnees
EP0789473A3 (fr) * 1996-02-06 2001-02-28 Nokia Mobile Phones Ltd. Support pour afficheur à cristaux liquides
GB2357188A (en) * 1999-10-25 2001-06-13 Nec Corp Antenna for a mobile radio device
WO2002058187A1 (fr) * 2001-01-19 2002-07-25 Nortel Networks Limited Dispositif d'antenne perfectionne pour systemes de communication a entrees multiples et sorties multiples
EP1249888A2 (fr) * 2001-04-11 2002-10-16 Lg Electronics Inc. Antenne intégrée montée au niveau de l'écran dans un système électronique mobile et système électronique mobile comprenant celle-ci
EP1280227A2 (fr) * 2001-07-20 2003-01-29 Samsung Electronics Co., Ltd. Deux antennes capable de commander la caractéristique de rayonnement dans un terminal de communication mobile
KR100400563B1 (ko) * 2001-04-11 2003-10-08 엘지전자 주식회사 무선통신용 안테나 및 그 안테나를 갖는 이동 컴퓨터
US6664930B2 (en) 2001-04-12 2003-12-16 Research In Motion Limited Multiple-element antenna
US6781548B2 (en) 2000-04-05 2004-08-24 Research In Motion Limited Electrically connected multi-feed antenna system
US6791500B2 (en) 2002-12-12 2004-09-14 Research In Motion Limited Antenna with near-field radiation control
US6809692B2 (en) 2000-04-19 2004-10-26 Advanced Automotive Antennas, S.L. Advanced multilevel antenna for motor vehicles
US6812897B2 (en) 2002-12-17 2004-11-02 Research In Motion Limited Dual mode antenna system for radio transceiver
EP1487050A1 (fr) * 2003-06-13 2004-12-15 Delphi Technologies, Inc. Ecran d'appareil de divertissement avec antenne intégrée pour automobile
US6876320B2 (en) 2001-11-30 2005-04-05 Fractus, S.A. Anti-radar space-filling and/or multilevel chaff dispersers
US6891506B2 (en) 2002-06-21 2005-05-10 Research In Motion Limited Multiple-element antenna with parasitic coupler
US6980173B2 (en) 2003-07-24 2005-12-27 Research In Motion Limited Floating conductor pad for antenna performance stabilization and noise reduction
KR100548204B1 (ko) * 2002-11-19 2006-02-02 삼성전자주식회사 무선통신기기의 소형 평면안테나 장치 및 이를 이용한ｐｄａ
US7023387B2 (en) 2003-05-14 2006-04-04 Research In Motion Limited Antenna with multiple-band patch and slot structures
US7072690B2 (en) 2001-04-11 2006-07-04 Lg Electronics Inc. Multi-band antenna and notebook computer with built-in multi-band antenna
EP1686651A3 (fr) * 2005-01-31 2006-08-30 Fujitsu Component Limited Antenne et dispositif électronique
US7148846B2 (en) 2003-06-12 2006-12-12 Research In Motion Limited Multiple-element antenna with floating antenna element
US7245196B1 (en) 2000-01-19 2007-07-17 Fractus, S.A. Fractal and space-filling transmission lines, resonators, filters and passive network elements
US7369089B2 (en) 2004-05-13 2008-05-06 Research In Motion Limited Antenna with multiple-band patch and slot structures
WO2010144886A1 (fr) * 2009-06-12 2010-12-16 Qualcomm Incorporated Dispositifs et procédés s'appliquant à un ensemble d'affichage comprenant une antenne
US7920097B2 (en) 2001-10-16 2011-04-05 Fractus, S.A. Multiband antenna
US7932870B2 (en) 1999-10-26 2011-04-26 Fractus, S.A. Interlaced multiband antenna arrays
US8009111B2 (en) 1999-09-20 2011-08-30 Fractus, S.A. Multilevel antennae
NL2007283C2 (en) * 2010-08-27 2012-02-28 Apple Inc Antennas mounted under dielectric plates.
US8207893B2 (en) 2000-01-19 2012-06-26 Fractus, S.A. Space-filling miniature antennas
US8712233B2 (en) 2012-02-24 2014-04-29 Apple Inc. Electronic device assemblies
WO2014074394A1 (fr) * 2012-11-09 2014-05-15 Corning Incorporated Dispositif électronique comportant une couverture en verre aérienne
US8738103B2 (en) 2006-07-18 2014-05-27 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US9186828B2 (en) 2012-06-06 2015-11-17 Apple Inc. Methods for forming elongated antennas with plastic support structures for electronic devices
US9318793B2 (en) 2012-05-02 2016-04-19 Apple Inc. Corner bracket slot antennas
US9455489B2 (en) 2011-08-30 2016-09-27 Apple Inc. Cavity antennas
WO2016184154A1 (fr) * 2015-10-27 2016-11-24 中兴通讯股份有限公司 Dispositif électronique
US9755314B2 (en) 2001-10-16 2017-09-05 Fractus S.A. Loaded antenna

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002081975A (ja) * 2000-09-08 2002-03-22 Aichi Tokei Denki Co Ltd 無線検針用電子式水道メータ
EP1278155B1 (fr) 2001-07-19 2006-09-06 Matsushita Electric Industrial Co., Ltd. Dispositif à carte avec une antenne et connecté à un appareil electronique ou à un dispositif sans fil
JP3790249B2 (ja) 2004-01-13 2006-06-28 株式会社東芝 ループアンテナ及びループアンテナを備えた無線通信機
JP4271647B2 (ja) * 2004-11-01 2009-06-03 三菱電機株式会社 表示装置
JP2010056766A (ja) * 2008-08-27 2010-03-11 Alps Electric Co Ltd アンテナモジュール
JP6136141B2 (ja) * 2012-08-10 2017-05-31 日本精機株式会社 車両用表示装置

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US4727377A (en) * 1985-05-20 1988-02-23 Toyota Jidosha Kabushiki Kaisha Window antenna for a vehicle with dual feed points
EP0274592A1 (fr) * 1986-11-07 1988-07-20 Yagi Antenna Co., Ltd. Antenne plate
GB2217538A (en) * 1988-03-04 1989-10-25 Nec Corp Paging receiver having a display
EP0347151A2 (fr) * 1988-06-14 1989-12-20 Dowty Mining Electronic Systems Limited Panneaux d'annonces
US5048118A (en) * 1989-07-10 1991-09-10 Motorola, Inc. Combination dual loop antenna and bezel with detachable lens cap

Cited By (105)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6054955A (en) * 1993-08-23 2000-04-25 Apple Computer, Inc. Folded monopole antenna for use with portable communications devices
WO1995006338A1 (fr) * 1993-08-23 1995-03-02 Apple Computer, Inc. Antenne unipolaire repliee utilisable avec des dispositifs de transmission portatifs
GB2292482A (en) * 1994-08-18 1996-02-21 Plessey Semiconductors Ltd Antenna arrangement
EP0701296A1 (fr) * 1994-08-18 1996-03-13 Plessey Semiconductors Limited Antenne à fente
US5677698A (en) * 1994-08-18 1997-10-14 Plessey Semiconductors Limited Slot antenna arrangement for portable personal computers
EP0789473A3 (fr) * 1996-02-06 2001-02-28 Nokia Mobile Phones Ltd. Support pour afficheur à cristaux liquides
AU713890B2 (en) * 1996-09-18 1999-12-16 Blackberry Limited Antenna system for an RF data communications device
WO1998012771A1 (fr) * 1996-09-18 1998-03-26 Research In Motion Limited Systeme d'antenne pour dispositif rf de transmission de donnees
US8009111B2 (en) 1999-09-20 2011-08-30 Fractus, S.A. Multilevel antennae
US8154463B2 (en) 1999-09-20 2012-04-10 Fractus, S.A. Multilevel antennae
US8330659B2 (en) 1999-09-20 2012-12-11 Fractus, S.A. Multilevel antennae
US9240632B2 (en) 1999-09-20 2016-01-19 Fractus, S.A. Multilevel antennae
US8976069B2 (en) 1999-09-20 2015-03-10 Fractus, S.A. Multilevel antennae
US10056682B2 (en) 1999-09-20 2018-08-21 Fractus, S.A. Multilevel antennae
US8941541B2 (en) 1999-09-20 2015-01-27 Fractus, S.A. Multilevel antennae
US9054421B2 (en) 1999-09-20 2015-06-09 Fractus, S.A. Multilevel antennae
US8154462B2 (en) 1999-09-20 2012-04-10 Fractus, S.A. Multilevel antennae
US9761934B2 (en) 1999-09-20 2017-09-12 Fractus, S.A. Multilevel antennae
US9000985B2 (en) 1999-09-20 2015-04-07 Fractus, S.A. Multilevel antennae
US9362617B2 (en) 1999-09-20 2016-06-07 Fractus, S.A. Multilevel antennae
GB2357188A (en) * 1999-10-25 2001-06-13 Nec Corp Antenna for a mobile radio device
US6813481B1 (en) 1999-10-25 2004-11-02 Nec Corporation Mobile radio machine
GB2357188B (en) * 1999-10-25 2001-12-12 Nec Corp Moblie radio unit
US7932870B2 (en) 1999-10-26 2011-04-26 Fractus, S.A. Interlaced multiband antenna arrays
US8896493B2 (en) 1999-10-26 2014-11-25 Fractus, S.A. Interlaced multiband antenna arrays
US8228256B2 (en) 1999-10-26 2012-07-24 Fractus, S.A. Interlaced multiband antenna arrays
US9905940B2 (en) 1999-10-26 2018-02-27 Fractus, S.A. Interlaced multiband antenna arrays
US8207893B2 (en) 2000-01-19 2012-06-26 Fractus, S.A. Space-filling miniature antennas
US7245196B1 (en) 2000-01-19 2007-07-17 Fractus, S.A. Fractal and space-filling transmission lines, resonators, filters and passive network elements
US9331382B2 (en) 2000-01-19 2016-05-03 Fractus, S.A. Space-filling miniature antennas
US8212726B2 (en) 2000-01-19 2012-07-03 Fractus, Sa Space-filling miniature antennas
US10355346B2 (en) 2000-01-19 2019-07-16 Fractus, S.A. Space-filling miniature antennas
US8610627B2 (en) 2000-01-19 2013-12-17 Fractus, S.A. Space-filling miniature antennas
US8558741B2 (en) 2000-01-19 2013-10-15 Fractus, S.A. Space-filling miniature antennas
US8471772B2 (en) 2000-01-19 2013-06-25 Fractus, S.A. Space-filling miniature antennas
US7538641B2 (en) 2000-01-19 2009-05-26 Fractus, S.A. Fractal and space-filling transmission lines, resonators, filters and passive network elements
US6781548B2 (en) 2000-04-05 2004-08-24 Research In Motion Limited Electrically connected multi-feed antenna system
US6809692B2 (en) 2000-04-19 2004-10-26 Advanced Automotive Antennas, S.L. Advanced multilevel antenna for motor vehicles
EP1657779A3 (fr) * 2001-01-19 2006-07-05 Nortel Networks Limited Dispositif d'antenne perfectionne pour systemes de communication a entrees multiples et sorties multiples
EP1657779A2 (fr) * 2001-01-19 2006-05-17 Nortel Networks Limited Dispositif d'antenne perfectionné pour systèmes de communication à entrées multiples et sorties multiples
WO2002058187A1 (fr) * 2001-01-19 2002-07-25 Nortel Networks Limited Dispositif d'antenne perfectionne pour systemes de communication a entrees multiples et sorties multiples
EP1764860A1 (fr) * 2001-04-11 2007-03-21 LG Electronics Inc. Antenne intégrée montée au niveau de l'écran dans un système électronique mobile et système électronique mobile comprenant celle-ci
US7072690B2 (en) 2001-04-11 2006-07-04 Lg Electronics Inc. Multi-band antenna and notebook computer with built-in multi-band antenna
US6957085B2 (en) 2001-04-11 2005-10-18 Lg Electronics Inc Internal display-mounted antenna for mobile electronic equipment and mobile electronic equipment incorporating same
EP1249888A3 (fr) * 2001-04-11 2004-01-07 Lg Electronics Inc. Antenne intégrée montée au niveau de l'écran dans un système électronique mobile et système électronique mobile comprenant celle-ci
KR100400563B1 (ko) * 2001-04-11 2003-10-08 엘지전자 주식회사 무선통신용 안테나 및 그 안테나를 갖는 이동 컴퓨터
EP1249888A2 (fr) * 2001-04-11 2002-10-16 Lg Electronics Inc. Antenne intégrée montée au niveau de l'écran dans un système électronique mobile et système électronique mobile comprenant celle-ci
US6950071B2 (en) 2001-04-12 2005-09-27 Research In Motion Limited Multiple-element antenna
US6664930B2 (en) 2001-04-12 2003-12-16 Research In Motion Limited Multiple-element antenna
EP1280227A2 (fr) * 2001-07-20 2003-01-29 Samsung Electronics Co., Ltd. Deux antennes capable de commander la caractéristique de rayonnement dans un terminal de communication mobile
EP1280227A3 (fr) * 2001-07-20 2003-03-19 Samsung Electronics Co., Ltd. Deux antennes capable de commander la caractéristique de rayonnement dans un terminal de communication mobile
US6707431B2 (en) 2001-07-20 2004-03-16 Samsung Electronics Co., Ltd. Dual antenna capable of controlling radiation characteristics in a mobile communication terminal
US7920097B2 (en) 2001-10-16 2011-04-05 Fractus, S.A. Multiband antenna
US8723742B2 (en) 2001-10-16 2014-05-13 Fractus, S.A. Multiband antenna
US9755314B2 (en) 2001-10-16 2017-09-05 Fractus S.A. Loaded antenna
US6876320B2 (en) 2001-11-30 2005-04-05 Fractus, S.A. Anti-radar space-filling and/or multilevel chaff dispersers
US7183984B2 (en) 2002-06-21 2007-02-27 Research In Motion Limited Multiple-element antenna with parasitic coupler
US6891506B2 (en) 2002-06-21 2005-05-10 Research In Motion Limited Multiple-element antenna with parasitic coupler
KR100548204B1 (ko) * 2002-11-19 2006-02-02 삼성전자주식회사 무선통신기기의 소형 평면안테나 장치 및 이를 이용한ｐｄａ
US8339323B2 (en) 2002-12-12 2012-12-25 Research In Motion Limited Antenna with near-field radiation control
US8525743B2 (en) 2002-12-12 2013-09-03 Blackberry Limited Antenna with near-field radiation control
US7541991B2 (en) 2002-12-12 2009-06-02 Research In Motion Limited Antenna with near-field radiation control
US8223078B2 (en) 2002-12-12 2012-07-17 Research In Motion Limited Antenna with near-field radiation control
US7961154B2 (en) 2002-12-12 2011-06-14 Research In Motion Limited Antenna with near-field radiation control
US7253775B2 (en) 2002-12-12 2007-08-07 Research In Motion Limited Antenna with near-field radiation control
US6791500B2 (en) 2002-12-12 2004-09-14 Research In Motion Limited Antenna with near-field radiation control
US8125397B2 (en) 2002-12-12 2012-02-28 Research In Motion Limited Antenna with near-field radiation control
US6812897B2 (en) 2002-12-17 2004-11-02 Research In Motion Limited Dual mode antenna system for radio transceiver
US7023387B2 (en) 2003-05-14 2006-04-04 Research In Motion Limited Antenna with multiple-band patch and slot structures
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US7148846B2 (en) 2003-06-12 2006-12-12 Research In Motion Limited Multiple-element antenna with floating antenna element
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