EP0851530A2 - Antenne in drahlosen Terminals - Google Patents

Antenne in drahlosen Terminals Download PDF

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Publication number
EP0851530A2
EP0851530A2 EP97309712A EP97309712A EP0851530A2 EP 0851530 A2 EP0851530 A2 EP 0851530A2 EP 97309712 A EP97309712 A EP 97309712A EP 97309712 A EP97309712 A EP 97309712A EP 0851530 A2 EP0851530 A2 EP 0851530A2
Authority
EP
European Patent Office
Prior art keywords
opening
wireless terminal
radio
antenna
conductive element
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Withdrawn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
EP97309712A
Other languages
English (en)
French (fr)
Other versions
EP0851530A3 (de
Inventor
Nedim Erkocevic
Fulps Vincentinus Vermeer
Cornelis Links
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.)
Nokia of America Corp
Original Assignee
Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of EP0851530A2 publication Critical patent/EP0851530A2/de
Publication of EP0851530A3 publication Critical patent/EP0851530A3/de
Withdrawn legal-status Critical Current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
    • H01Q1/24—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/526—Electromagnetic shields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/16—Folded slot antennas

Definitions

  • the present invention relates to telecommunications in general, and, more particularly, to antennas for wireless terminals.
  • a wireless terminal is a device that transmits and/or receives radio frequency signals.
  • wireless terminals include televisions, radios, cellular telephones, pagers, personal digital assistants and satellites.
  • wireless terminals Many devices that formerly relied on wireline connections for transmitting and/or receiving signals are now wireless terminals. For example, devices such as telephones, scanners, data entry devices and point-of-sale terminals now use wireless techniques to transmit and/or receive signals representing information to/from a host system.
  • a point-of-sale terminal can transmit to a host system a signal indicating that a particular item is being sold. If the host system comprises a database that tracks inventory, the database can be updated to reflect the sale of the item. In addition, the host system can transmit a signal back to the wireless terminal that represents processed information (for example, the price of, and any tax on, the item). The wireless terminal can use that information to perform additional functions, such as printing a receipt for the purchase of the item. To enable a wireless terminal to be capable of transmitting and/or receiving signals, it needs an antenna.
  • a wireless terminal's antenna can be either mounted externally or integrated into the wireless terminal itself. Mounting an antenna externally has several disadvantages. For example, an externally mounted antenna (especially one that employs a telescoping structure) can poke the eyes of the wireless terminal's user or the eyes of someone near the user. In addition, an externally mounted antenna can mar the aesthetics of the wireless terminal. And furthermore, the mechanical provisions needed to externally mount an antenna increases the cost of the wireless terminal.
  • an internal antenna is disadvantageous because of the need to extensively plan in advance the mechanical layout of the wireless terminal. For example, sufficient space must be reserved within the housing of the wireless terminal for the antenna. In addition, the design of the wireless terminal's electromagnetic shielding must consider the desired radiation pattern of the integrated antenna.
  • Embodiments of the present invention are capable of providing an antenna for a wireless terminal without many of the costs and restrictions associated with antennas in the prior art.
  • a conductive element in a wireless terminal can be used both as means of providing electrical protection to the electrical components within the wireless terminal and as component of an antenna for the wireless terminal.
  • One embodiment of the present invention comprises: a radio; a housing; a conductive element in said housing having an opening, wherein said conductive element provides electrical protection to said radio, and a transmission line for coupling signals between said radio and said opening.
  • FIG. 1 depicts an isometric drawing of the exterior of wireless terminal 100, with which embodiments of the present invention can be practiced.
  • FIG. 2 depicts an exploded isometric drawing of wireless terminal 100.
  • FIG. 3 depicts a side view drawing of the interior of side element 115.
  • FIG. 4 depicts an exploded isometric drawing of wireless terminal 400, which comprises a bent-slot antenna.
  • FIG. 5 depicts an exploded isometric drawing of wireless terminal 500, which comprises two bent-slot antennas.
  • FIG. 6 depicts an exploded isometric drawing of wireless terminal 600, which comprises a bent-slot antenna that is partially comprised of a conductive partition within housing 602.
  • FIG. 1 depicts an isometric drawing of the exterior of wireless terminal 100, with which embodiments of the present invention can be practiced.
  • Wireless terminal 100 advantageously comprises: housing 102, keypad 103, display area 106, a radio within housing 102 (not shown) and other associated electronics (not shown).
  • Keypad 103 can be used to enter information into wireless terminal 100 and display area 106 can be used to display information.
  • wireless terminal 100 can comprise other input and output elements, such as, for example, a laser scanner, a microphone, a speaker, etc.
  • Housing 102 advantageously comprises side element 115, which itself comprises opening 120.
  • a radio is defined as a device that prepares electromagnetic signals for transmission via an antenna and/or processes signals that have been received via an antenna. It will be clear to those skilled in the art that as used in this specification the term radio includes devices that are capable of processing voice, data, video and other multimedia signals.
  • FIG. 2 depicts an exploded isometric drawing of wireless terminal 100 with the portion of housing 102 containing keypad 103 and display 106 elevated above the remainder.
  • the interior wall of housing 102 advantageously comprises conductive element 200.
  • Conductive element 200 advantageously comprises a conductive coating that is applied to the interior walls of housing 102.
  • conductive element 200 can comprise a coating or spray of a conducting coating or paint as manufactured by W.L. Gore & Assoc. U.K. Ltd. or Chemitron Dev. Shinto Paint or as specified in electrical compliance handbooks.
  • conductive element 200 advantageously provides both: (1) electrical protection (e . g ., electromagnetic compatibility, interference shielding and/or electrostatic discharge protection), and (2) a component of an antenna for wireless terminal 100.
  • FIG. 3 depicts a side view drawing of the interior of side element 115, all of which is coated with conductive element 200 except for a portion, opening 210, that corresponds with opening 120 in side element 115 (as shown in FIG. 1).
  • opening 120 advantageously coincides with, and is at least as large as, opening 210.
  • Opening 120 and opening 210 are advantageously both in the shape of a rectangle of width W and length L .
  • opening 120 can be left "empty" or filled with ambient air
  • opening 120 can be filled with a dielectric material, such as ABS plastic. Dielectric materials can be used to keep outside contaminants from getting into housing 102 and can be used to make engineering trade-offs between the length required for the slot versus antenna efficiency in the design of the wireless terminal.
  • Opening 210 in conductive element 200 is excited so as to resonate at the frequency at which the wireless terminal is to operate, thereby forming an antenna.
  • the antenna is referred to as a slot antenna.
  • the characteristics of slot antennas are well known to those skilled in the art and are described in the following references, which are incorporated herein by reference: (1) Kai Fong Lee, Principles of Antenna Theory , pages 290-293, John Wiley & Sons, Chichester, 1984, ISBN 0471901679; and (2) Reference Data for Engineers: Radio, Electronics, Computer and Communications , chapter 32, 7 th ed., Howard W. Sams & Co., Inc., Indianapolis, Indiana, 1985.
  • opening 210 can be excited either by conductive or inductive coupling.
  • conductive coupling includes a transmission line (e.g ., a coaxial cable), which carries signals to be transmitted and received, that is mechanically attached ( e.g ., by soldering) to conductive element 200 near opening 210.
  • inductive coupling can be achieved by placing a short, open radio frequency (RF) line, which acts as a short monopole antenna, in proximity to opening 210 so as to induce RF coupling.
  • RF radio frequency
  • the surface area of conductive element 200 is advantageously large with respect to the area of opening 210.
  • the length L of opening 210 is advantageously between approximately 0.25 ⁇ and 0.5 ⁇ and the width W of opening 210 is advantageously 0.10 ⁇ or less.
  • the surface area of conductive element 200 is advantageously ⁇ 2 or larger.
  • ⁇ is approximately 12 centimeters
  • L is advantageously between approximately 3 to 6 centimeters
  • W is advantageously 1.2 centimeters or less
  • the total surface area of conductive element 200 is advantageously 144 square centimeters or greater.
  • FIG. 4 depicts an isometric drawing of an alternative embodiment of the present invention in which the openings in the housing and the conductive element are instead "bent” or “wrapped” around a corner of housing 402 of wireless terminal 400.
  • This provides a more omnidirectional radiation pattern than does embodiments of the present invention that have planar openings.
  • this embodiment is known as a "bent-slot" antenna.
  • the reference A. Kumoyama et al., UHF Bent-Slot Antenna System for Portable Equipment - I, IEEE Trans. On Vehicular Tech. , vol. VT-36, No. 2, pp. 78-85, Can 1987 provides background on bent-slot antennas and is incorporated by reference.
  • FIG. 5 depicts an isometric drawing of yet another embodiment of the present invention that comprises two bent-slot antennas in adjacent corners so as to provide antenna diversity.
  • Such antenna diversity can be used to increase link reliability for a given operating range or to increase the transmission range for a given level of link reliability.
  • FIG. 6 depicts an exploded isometric drawing of another embodiment of the present invention. Again, for pedagogical reasons, the radio and most of the associated components of wireless terminal 600 are not shown so that the placement of the certain components are more clearly visible.
  • the inside of housing 620 is divided into two compartments by a conductive partition, such as printed circuit board 630: the first compartment includes opening 655, and the second compartment does not.
  • the conductive partition can comprise a sheet of metal or other conductor, or a printed circuit board that comprises a conductive plane.
  • the interior wall of housing 620 within the first compartment advantageously comprises conductive element 611.
  • the interior walls of housing 620 within the second compartment do not comprise conductive element 611.
  • opening 655 in one wall of housing 620 forms a portion of a bent-slot antenna.
  • Another portion of the bent-slot antenna is formed by opening 650 in printed circuit board 630.
  • Printed circuit board 630 advantageously comprises a conductive element, such as a layer of metal, and is positioned so that the conductive element of printed circuit board 630 is electrically and mechanically connected to conductive element 611 within the first compartment, thereby forming a larger conducting element.
  • a electrical and mechanical connection can be made by sliding printed circuit board 630 into recessed grooves of housing 620 (not shown).
  • the size of printed circuit board 630 is 0.25 ⁇ or larger by 0.25 ⁇ or larger.
  • printed circuit board 630 comprises opening 650.
  • the vertices of opening 650 and opening 655 advantageously abut, thereby forming a single, continuous larger opening, suitable for excitation as a bent-slot antenna with the length and width of the slot chosen as explained above.
  • An advantage of this embodiment is that it is typically easier, mechanically, to connect a transmission line (i.e ., a path for carrying signals from the radio to excite the antenna to resonance and vice versa) to printed circuit board 630 than to a conductive coating.
  • a transmission line i.e ., a path for carrying signals from the radio to excite the antenna to resonance and vice versa
  • a stripline on printed circuit board 630 can be used as a conductive coupling to opening 650 and opening 655.
  • This embodiment of the invention is particularly advantageous for use with wireless terminals such as laser scan bar code readers and infrared low speed data link couplings.
  • printed circuit board 630 is typically positioned behind window 680 in housing 620 through which the laser scans or through which wireless terminal 660 establishes an infrared communications link.
  • window 680 forms a portion of the wireless terminal which is not shielded and through which signals can propagate from the bent-slot antenna.
  • materials e.g ., pieces of gold or copper
  • suitable for conducting electrical signals can be used in place of printed circuit board 630.
  • the opening need not be in the shape of a slot, e.g ., opening 210 can be a zigzag pattern or in a v shaped pattern or can bend around more than one edge of the wireless terminal.
  • the length of the opening is advantageously chosen in relation to the size of the conducting element and the operating frequency of the wireless terminal.
  • Embodiments of the present invention can also incorporate multiple antennas thereby providing antenna diversity.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Waveguide Aerials (AREA)
  • Transceivers (AREA)
EP97309712A 1996-12-28 1997-12-02 Antenne in drahlosen Terminals Withdrawn EP0851530A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78197096A 1996-12-28 1996-12-28
US781970 1996-12-28

Publications (2)

Publication Number Publication Date
EP0851530A2 true EP0851530A2 (de) 1998-07-01
EP0851530A3 EP0851530A3 (de) 2000-07-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97309712A Withdrawn EP0851530A3 (de) 1996-12-28 1997-12-02 Antenne in drahlosen Terminals

Country Status (3)

Country Link
EP (1) EP0851530A3 (de)
JP (1) JPH10200439A (de)
KR (1) KR19980064768A (de)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2344201A (en) * 1998-11-27 2000-05-31 Caradon Friedland Limited Apparatus for door entry control and/or door entry request indication
WO2000062432A1 (en) * 1999-04-14 2000-10-19 Ericsson, Inc. Personal communication terminal with a slot antenna
WO2003052867A1 (en) 2001-12-18 2003-06-26 Nokia Corporation Monopole slot antenna
EP1418642A2 (de) * 2002-11-06 2004-05-12 Sony Ericsson Mobile Communications Japan, Inc. Gerät zur drahtlosen Kommunikation
EP1560291A1 (de) * 2003-09-09 2005-08-03 Sony Corporation Drahtloses Kommunikationsgerät mit einer Schlitzantenne
GB2434697A (en) * 2006-01-31 2007-08-01 Motorola Inc RF communication device with a casing slot antenna
EP1858112A1 (de) * 2006-05-19 2007-11-21 AMC Centurion AB Metallgehäuse mit schlitzantennen für Funk-Kommunikationsgerät
US7391378B2 (en) 2003-01-15 2008-06-24 Filtronic Lk Oy Antenna element for a radio device
EP2109185A1 (de) 2008-04-11 2009-10-14 Apple Inc. Hybridantennen für elektronische Geräte
US7864123B2 (en) 2007-08-28 2011-01-04 Apple Inc. Hybrid slot antennas for handheld electronic devices
US8094079B2 (en) 2007-01-04 2012-01-10 Apple Inc. Handheld electronic devices with isolated antennas
US8207897B2 (en) 2008-12-18 2012-06-26 Motorola Mobility, Inc. Radio device and slot antenna which facilitates operation of a user interface element
WO2012159618A1 (de) * 2011-05-24 2012-11-29 Harting Electric Gmbh & Co. Kg Rfid-transponder mit abgebogener schlitzantenne
US8350761B2 (en) 2007-01-04 2013-01-08 Apple Inc. Antennas for handheld electronic devices
FR2980309A1 (fr) * 2011-09-19 2013-03-22 Commissariat Energie Atomique Systeme d'antennes integrable dans un terminal portable, notamment utilisable pour la reception de la television numerique terrestre.
US20130257662A1 (en) * 2012-03-29 2013-10-03 Samsung Electronics Co. Ltd. Antenna device of mobile terminal
CN104009284A (zh) * 2014-05-08 2014-08-27 昆山联滔电子有限公司 耦合天线
US9450291B2 (en) 2011-07-25 2016-09-20 Pulse Finland Oy Multiband slot loop antenna apparatus and methods
US9509054B2 (en) 2012-04-04 2016-11-29 Pulse Finland Oy Compact polarized antenna and methods
US9634383B2 (en) 2013-06-26 2017-04-25 Pulse Finland Oy Galvanically separated non-interacting antenna sector apparatus and methods
US9647338B2 (en) 2013-03-11 2017-05-09 Pulse Finland Oy Coupled antenna structure and methods
US9673507B2 (en) 2011-02-11 2017-06-06 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US9680212B2 (en) 2013-11-20 2017-06-13 Pulse Finland Oy Capacitive grounding methods and apparatus for mobile devices
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
US9735461B2 (en) 2013-09-27 2017-08-15 Thomson Licensing Antenna assembly for electronic device
US9761951B2 (en) 2009-11-03 2017-09-12 Pulse Finland Oy Adjustable antenna apparatus and methods
US9906260B2 (en) 2015-07-30 2018-02-27 Pulse Finland Oy Sensor-based closed loop antenna swapping apparatus and methods
US9917346B2 (en) 2011-02-11 2018-03-13 Pulse Finland Oy Chassis-excited antenna apparatus and methods
EP3293824A1 (de) * 2016-09-09 2018-03-14 Thomson Licensing Drahtloskommunikationsvorrichtung mit hohlraumantenne mit einem gebogenen patch oder schlitz
US9948002B2 (en) 2014-08-26 2018-04-17 Pulse Finland Oy Antenna apparatus with an integrated proximity sensor and methods
US9973228B2 (en) 2014-08-26 2018-05-15 Pulse Finland Oy Antenna apparatus with an integrated proximity sensor 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

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KR19990038147A (ko) * 1997-11-03 1999-06-05 전주범 내장식 안테나를 구비한 휴대폰
JP2003318622A (ja) * 2002-02-25 2003-11-07 Tdk Corp アンテナ装置およびそれを用いた電子装置
KR100491884B1 (ko) * 2002-07-16 2005-05-30 엘지전자 주식회사 이동통신 단말기의 주파수 선택 표면 페인티드 안테나
FI20055420A0 (fi) 2005-07-25 2005-07-25 Lk Products Oy Säädettävä monikaista antenni
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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
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
FI20115072A0 (fi) 2011-01-25 2011-01-25 Pulse Finland Oy Moniresonanssiantenni, -antennimoduuli ja radiolaite
US8866689B2 (en) 2011-07-07 2014-10-21 Pulse Finland Oy Multi-band antenna and methods for long term evolution wireless system
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
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
JP6971163B2 (ja) * 2018-02-13 2021-11-24 株式会社ヨコオ アンテナ装置

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Cited By (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2344201A (en) * 1998-11-27 2000-05-31 Caradon Friedland Limited Apparatus for door entry control and/or door entry request indication
WO2000062432A1 (en) * 1999-04-14 2000-10-19 Ericsson, Inc. Personal communication terminal with a slot antenna
US6282433B1 (en) 1999-04-14 2001-08-28 Ericsson Inc. Personal communication terminal with a slot antenna
GB2363294A (en) * 1999-04-14 2001-12-12 Ericsson Inc Personal communication terminal with a slot antenna
US7327324B2 (en) 2001-12-18 2008-02-05 Nokia Corporation Monopole slot antenna
WO2003052867A1 (en) 2001-12-18 2003-06-26 Nokia Corporation Monopole slot antenna
EP1418642A2 (de) * 2002-11-06 2004-05-12 Sony Ericsson Mobile Communications Japan, Inc. Gerät zur drahtlosen Kommunikation
EP1418642A3 (de) * 2002-11-06 2004-06-16 Sony Ericsson Mobile Communications Japan, Inc. Gerät zur drahtlosen Kommunikation
US7389129B2 (en) 2002-11-06 2008-06-17 Sony Ericsson Mobile Communications Japan, Inc. Wireless communication apparatus
US7391378B2 (en) 2003-01-15 2008-06-24 Filtronic Lk Oy Antenna element for a radio device
EP1560291A1 (de) * 2003-09-09 2005-08-03 Sony Corporation Drahtloses Kommunikationsgerät mit einer Schlitzantenne
US7161548B2 (en) 2003-09-09 2007-01-09 Sony Corporation Wireless communication apparatus
GB2434697A (en) * 2006-01-31 2007-08-01 Motorola Inc RF communication device with a casing slot antenna
GB2434697B (en) * 2006-01-31 2008-07-02 Motorola Inc RF communication device and method of operation of the device
EP1858112A1 (de) * 2006-05-19 2007-11-21 AMC Centurion AB Metallgehäuse mit schlitzantennen für Funk-Kommunikationsgerät
WO2007136321A1 (en) * 2006-05-19 2007-11-29 Laird Technologies Ab A metal cover for a radio communication device
CN101366147B (zh) * 2006-05-19 2012-10-03 莱尔德技术股份有限公司 用于无线电通信设备的金属壳
US8350761B2 (en) 2007-01-04 2013-01-08 Apple Inc. Antennas for handheld electronic devices
US8094079B2 (en) 2007-01-04 2012-01-10 Apple Inc. Handheld electronic devices with isolated antennas
US8907850B2 (en) 2007-01-04 2014-12-09 Apple Inc. Handheld electronic devices with isolated antennas
US8872708B2 (en) 2007-01-04 2014-10-28 Apple Inc. Antennas for handheld electronic devices
US7864123B2 (en) 2007-08-28 2011-01-04 Apple Inc. Hybrid slot antennas for handheld electronic devices
US8410986B2 (en) 2008-04-11 2013-04-02 Apple Inc. Hybrid antennas for electronic devices
US8106836B2 (en) 2008-04-11 2012-01-31 Apple Inc. Hybrid antennas for electronic devices
WO2009126423A1 (en) * 2008-04-11 2009-10-15 Apple Inc. Hybrid antennas for electronic devices
US8994597B2 (en) 2008-04-11 2015-03-31 Apple Inc. Hybrid antennas for electronic devices
EP2109185A1 (de) 2008-04-11 2009-10-14 Apple Inc. Hybridantennen für elektronische Geräte
US8207897B2 (en) 2008-12-18 2012-06-26 Motorola Mobility, Inc. Radio device and slot antenna which facilitates operation of a user interface element
US9761951B2 (en) 2009-11-03 2017-09-12 Pulse Finland Oy Adjustable antenna apparatus and methods
US9673507B2 (en) 2011-02-11 2017-06-06 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US9917346B2 (en) 2011-02-11 2018-03-13 Pulse Finland Oy Chassis-excited antenna apparatus and methods
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EP3293824A1 (de) * 2016-09-09 2018-03-14 Thomson Licensing Drahtloskommunikationsvorrichtung mit hohlraumantenne mit einem gebogenen patch oder schlitz
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JPH10200439A (ja) 1998-07-31
KR19980064768A (ko) 1998-10-07
EP0851530A3 (de) 2000-07-26

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