EP0986130A2 - Antenna for wireless communication terminal device - Google Patents

Antenna for wireless communication terminal device Download PDF

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Publication number
EP0986130A2
EP0986130A2 EP19990117720 EP99117720A EP0986130A2 EP 0986130 A2 EP0986130 A2 EP 0986130A2 EP 19990117720 EP19990117720 EP 19990117720 EP 99117720 A EP99117720 A EP 99117720A EP 0986130 A2 EP0986130 A2 EP 0986130A2
Authority
EP
Grant status
Application
Patent type
Prior art keywords
antenna
circuit board
layers
communication terminal
multilayer
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.)
Granted
Application number
EP19990117720
Other languages
German (de)
French (fr)
Other versions
EP0986130A3 (en )
EP0986130B1 (en )
Inventor
Stefan Huber
Martin Dr. Weinberger
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.)
BenQ Mobile GmbH and Co oHG
Original Assignee
Siemens AG
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

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC 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
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01BASIC ELECTRIC 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
    • H01Q1/243Supports; 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
    • HELECTRICITY
    • H01BASIC ELECTRIC 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
    • H01Q5/378Combination of fed elements with parasitic elements
    • H01Q5/385Two or more parasitic elements

Abstract

The antenna has its structure formed by a conducting track of any shape applied to a circuit board. A multilayer circuit board is used with a different antenna structure or some other electrical element on each layer. The multilayer circuit board can be in the form of one or more multilayer boards, whereby the individual circuit boards each have at least three layers. The individual antenna structures can be formed into a radiator and the individual layers can adopt any position with respect to each other.

Description

Die vorliegende Erfindung betrifft eine Antenne für funkbetriebene Kommunikationsendgeräte, bei welche die eigentliche Antennenstruktur von einer auf einer Leiterplatte befindlichen eine beliebige Form aufweisende Leiterplatte gebildet wird. The present invention relates to an antenna for radio-operated communication terminal, with which the actual antenna structure is formed by a plate located on a printed circuit having an arbitrary shape circuit board.

In Hinsicht auf die Entwicklung in der Mobilfunktechnologie werden Antennen benötigt, welche in der Lage sind mehrere Frequenzbänder gleichzeitig abzudecken. With regard to the development in the mobile technology antennas are needed which are able to cover multiple frequency bands simultaneously. Außerdem verlangt der Markt nach immer kleineren und billigeren Mobilfunkgeräten. Moreover, the market demands smaller and cheaper mobile devices. Deswegen sind Antennen gefordert, die einen geringen Platzbedarf haben, problemlos für eine Funktion in mehreren Frequenzbändern oder einem breitbandigen Frequenzbereich auslegbar und billig und reproduzierbar herstellbar sind. Therefore, antennas are required to have a small footprint, are interpretable and cheap for function in several frequency bands or a wide-band frequency range and in a reproducible manner without any problems.

Die bisherigen Konzepte, wie z. The previous concepts such. B. die Helix-Drahtantennen oder die Mikrostreifenleitungsantennen haben alle den Nachteil, daß sie entweder einen zu hohen Platzbedarf haben oder die Abstimmbarkeit bei einer Multiband-Funktion nicht ohne weiteres möglich ist. For example, the helix wire antennas or microstrip antennas all have the disadvantage that they either have too high a space or the tunability is not readily applied to a multi-band capability is possible.

Aufgabe der vorliegenden Erfindung ist es, eine Antenne der eingangs genannten Art anzugeben, die einen geringen Platzbedarf aufweist, für mehrere Frequenzbänder auslegbar ist und billig herstellbar ist. Object of the present invention is to provide an antenna of the type mentioned, which has a low space requirement, is interpretable for a plurality of frequency bands and is inexpensive to manufacture.

Diese Aufgabe wird für die eingangs genannte Antenne dadurch gelöst, daß eine mehrlagige Leiterplatte vorgesehen ist, wobei auf jeder Lage der mehrlagigen Leiterplatte eine unterschiedliche Antennenstruktur appliziert ist. This object is achieved for the aforementioned antenna characterized in that a multilayer printed circuit board is provided wherein a different antenna structure is applied on each layer of the multilayer circuit board.

Die erfindungsgemäße Antenne ist leicht und billig herstellbar, erfordert einen geringen Platzbedarf und ist problemlos für eine Funktion in mehreren Frequenzbändern oder in einem breitbandigen Frequenzbereich auslegbar. The antenna according to the invention is easy and cheap to produce, requires little space and is easily adaptable for operation in multiple frequency bands or a wide-band frequency range.

Weitere zweckmäßige Ausgestaltungen der erfindungsgemäßen Antenne ergeben sich aus den Unteransprüchen sowie aus einer nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnung. Further expedient embodiments of the antenna according to the invention will be apparent from the dependent claims and from a subsequent description of embodiments with reference to the drawing.

In der Zeichnung zeigen In the drawings

  • Figur 1 bis Figur 8 mögliche Ausgestaltungen der einzelnen Antennenstrukturen, 1 to FIG 8 possible designs of the individual antenna structures,
  • Figur 9A bis Figur 9D und Figur 10 den beispielhaften Aufbau einer mehrlagigen Antenne, und Figure 9A to Figure 9D and Figure 10 shows the exemplary structure of a multilayer antenna, and
  • Figuren 11A bis 11D und Figur 12 einen anderen beispielhaften Aufbau einer weiteren mehrlagigen Antenne. 11A to 11D and 12 shows another exemplary structure of still another multi-layered antenna.

Die einzelnen Antennenstrukturen entstehen durch unterschiedlich ausgebildete Leiterbahnen in den verschiedenen Lagen der mehrlagigen Leiterplatte. The individual antenna structures are formed by differently configured conductive tracks in the different layers of the multilayer printed circuit board. Dabei können die Antennenstrukturen, die in den Figuren 1 bis 8 beispielhaft gezeigte Formen, aber auch darüber hinausgehende Formen, annehmen. Thereby the antenna structures, which forms an example shown in the figures 1 to 8, but also beyond forms taken. Vorzugsweise hat die Leiterbahn die Form eines Mäanders, einer Schlangenlinie oder die Form eines Stabes. Preferably, the conductor path has the shape of a meander, a wavy line or the shape of a rod. Die Leiterbahnen können sich auch wie in den Figuren 5 und 6 gezeigt ist, verzweigen und an unterschiedlichen Punkten B bis N1, welche in einer Ebene liegen, enden. The conductor tracks may also be as shown in Figures 5 and 6 is shown at different points and branch B to N1, which lie in a plane end. Weiterhin ist es möglich, daß in einer Lage jeweils mehrere eine Antenne bildende Leiterbahn nebeneinander angeordnet sind. It is also possible that a plurality of an antenna-forming conductive track arranged side by side each in a single layer.

In den Figuren 9A bis 10 ist eine vierlagige Antenne gemäß der vorliegenden Erfindung dargestellt. In Figures 9A to 10, a four-layer antenna is illustrated in accordance with the present invention. In den Figuren 9A bis 9D sind die einzelnen Antennenstrukturen in den vier Lagen dargestellt. In Figures 9A to 9D, the individual antenna structures are shown in the four layers. Figur 10 zeigt einen schematischen Querschnitt durch diese vierlagige Antenne. Figure 10 shows a schematic cross section through this four-layer antenna. Es ist zu erkennen, daß sich zwei Lagen innerhalb der mehrlagigen Leiterplatte und zwei Lagen außerhalb der mehrlagigen Leiterplatte befinden. It can be seen that two layers within the multilayer printed circuit board and two layers outside the multilayer printed circuit board are located.

Es sollen an dieser Stelle noch einige allgemeine Bemerkungen zu der erfindungsgemäßen Antenne gemacht werden. There are some general observations can be made to the inventive antenna at this point. Die hier vorgestellte mehrlagige Multiband-Antenne besteht aus einer oder mehreren mehrlagigen Leiterplatten. The presented multi-layer multi-band antenna is composed of one or more multilayer circuit boards. Das Material, aus dem eine dieser Leiterplatten besteht, ist frei wählbar, sollte aber hochfrequenztauglich sein. The material that makes up one of these boards can be freely selected, but should be high frequency compatible. Es kann im besonderen Fall auch biegsames flexibles Material sein. It may also be pliable flexible material in the particular case. Auf jeder Lage kann eine Leiterbahn strukturiert sein, die einen Strahler oder ein anderes beliebiges elektrisches Element darstellt. On each layer a conductive track may be structured, which is a radiator or any other electrical element.

Die Antenne besteht aus mehr als zwei Lagen, also mindestens aus drei Lagen. The antenna consists of more than two layers, so at least three layers. Von diesen Lagen liegt mindestens eine innerhalb des Materials. Of these layers at least one is within the material. Die Lagen sind vorzugsweise, aber nicht zwingend, parallel zueinander. The layers are preferably, but not necessarily, parallel to each other. Sie können jede beliebige Position zueinander einnehmen. You can take any position to each other. Die Lagen können an jeder beliebigen Position der Leiterplatte liegen und jede beliebige auch unterschiedliche Dicke besitzen. The layers can be at any position of the circuit board and having any, different thickness. Es sind also auch Lagen auf den Stirnseiten und auf den Längsseiten möglich. even layers on the sides and on the long sides are therefore possible. Weiterhin sind auch schiefe Lagen möglich. Further, also inclined positions are possible.

Vorzugsweise besitzt nur eine Leiterbahn (ein Strahler) auf einer Lage einen Speisepunkt. Preferably, only one conductor track (a radiator) has a feeding point on a layer. Dieser Speisepunkt wird über ein Kontaktelement mit der HF-Baugruppe des Kommunikationsendgerätes verbundenn. This feed point is verbundenn via a contact element with the RF module of the communication terminal.

Alle anderen Strahler werden vorzugsweise durch Kopplung angeregt. All other lamps are preferably excited by coupling. Es können sich auch zwei oder mehrere Strahler auf einer Lage befinden. It can be on one layer, two or more emitters.

Es können sich aber auch eine oder mehrere direkte elektrische Verbindungen zwischen einem oder mehreren Strahlern auf verschiedenen Lagen mittels Durchkontaktierung oder Kontaktierung über eine Seitenfläche an jedem beliebigen Punkt hergestellt werden. However, it is also one or more direct electrical connections between one or more reflectors on different locations by means of via or contact a side surface at any point can be produced.

Ein derartiges Beispiel mit einer Durchkontaktierung ist in den Figuren 11A bis 11D und 12 gezeigt. Such an example with a via is shown in Figures 11A to 11D and 12. FIG. Hierbei handelt es sich um eine vierlagige Multibandantenne, deren Antennenstrukturen dem in den Figuren 9A bis 9D und Figur 10 gezeigtem Ausführungsbeispiel entsprechen. This is a four-layered multi-band antenna whose antenna structures correspond to those shown in Figures 9A-9D and Figure 10 embodiment. Zum Unterschied zu dem vorher beschriebenen Ausführungsbeispiel sind bei diesem Ausführungsbeispiel die in Figur 11A und Figur 11C gezeichneten Lagen mittels einer Durchkontaktierung, wie in Figur 12 zu erkennen ist, miteinander verbunden. In contrast to the previously described embodiment, in this embodiment, the drawing in Figure 11A and Figure 11C plies by means of a via, as can be seen in Figure 12, connected to each other.

Claims (10)

  1. Antenne für funkbetriebene Kommunikationsendgeräte, bei welcher die eigentliche Antennenstruktur von einer auf einer Leiterplatte befindlichen eine beliebige Form aufweisende Leiterbahn gebildet wird, dadurch gekennzeichnet, daß eine mehrlagige Leiterplatte vorgesehen ist, wobei auf jeder Lage der mehrlagigen Leiterplatte eine unterschiedliche Antennenstruktur oder ein sonstiges elektrisches Element appliziert ist. Antenna for radio-operated communications terminals, in which the actual antenna structure is formed from a on a circuit board located any shape having conductor track, characterized in that a multilayer printed circuit board is provided, applied to each layer of the multilayer printed circuit board, a different antenna structure, or other electric element is.
  2. Antenne nach Anspruch 1, dadurch gekennzeichnet, daß die mehrlagige Leiterplatte aus einer oder mehreren mehrlagigen Leiterplatten besteht, wobei die einzelne Leiterplatte mindestens drei Lagen aufweist. An antenna according to claim 1, characterized in that the multilayer printed circuit board consists of one or more multilayer circuit boards, said single circuit board comprises at least three layers.
  3. Antenne nach Anspruch 1 oder 2 , dadurch gekennzeichnet, daß die einzelnen Antennenstrukturen zur Ausbildung eines Strahlers geformt sind. An antenna according to claim 1 or 2, characterized in that the individual antenna structures are shaped to form a radiator.
  4. Antenne nach einem der Ansprüche 1 oder 3, dadurch gekennzeichnet, daß die einzelnen Lagen beliebige Positionen zueinander einnehmen. Antenna according to one of claims 1 or 3, characterized in that each take the individual layers arbitrary positions.
  5. Antenne nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die einzelnen die Antennenstruktur bildenden Leiterbahnen unterschiedliche Dicke aufweisen. Antenna according to one of claims 1 to 4, characterized in that the individual antenna structure forming conductive paths have different thickness.
  6. Antenne nach Anspruch 1 bis 5 ,dadurch gekennzeichnet, daß sich auf den einzelnen Lagen jeweils eine oder mehrere Leiterbahnen befinden. The antenna of claim 1 to 5, characterized in that there are on the individual layers in each case one or more conductor tracks.
  7. Antenne nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die einzelne Leiterbahnen an einem oder mehreren vorgegebenen Punkten beginnen und an einem oder mehreren vorgegebenen Punkten in derselben Ebene enden. Antenna according to one of the preceding claims, characterized in that the individual conductor tracks begin at one or more predetermined points and end at one or more predetermined points in the same plane.
  8. Antenne nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine oder mehrere der Antennenstrukturen einen Speisepunkt aufweisen, der über ein Kontaktelement mit der HF-Baugruppe des Kommunikationsendgerätes verbunden ist. Antenna according to one of the preceding claims, characterized in that one or more of the antenna structures have a feed point which is connected via a contact element with the RF module of the communication terminal.
  9. Antenne nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine oder mehrere direkte elektrische Verbindungen zwischen einer oder mehreren Antennenstrukturen auf verschiedenen Lagen vorgesehen sind. Antenna according to one of the preceding claims, characterized in that one or more direct electrical connections between one or more antenna structures are provided on different layers.
  10. Antenne nach einem der vorhergehenden Ansprüche , dadurch gekennzeichnet, daß die Antenne in der HF-Baugruppe des Kommunikationsendgerätes integriert ist. Antenna according to one of the preceding claims, characterized in that the antenna is integrated into the RF module of the communication terminal.
EP19990117720 1998-09-08 1999-09-08 Antenna for wireless communication terminal device Not-in-force EP0986130B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19841011 1998-09-08
DE19841011 1998-09-08

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EP0986130A2 true true EP0986130A2 (en) 2000-03-15
EP0986130A3 true EP0986130A3 (en) 2000-12-13
EP0986130B1 EP0986130B1 (en) 2004-08-04

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EP19990117720 Not-in-force EP0986130B1 (en) 1998-09-08 1999-09-08 Antenna for wireless communication terminal device

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EP (1) EP0986130B1 (en)
CN (1) CN1249546A (en)
DK (1) DK0986130T3 (en)
ES (1) ES2226252T3 (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1237224A1 (en) * 2001-02-14 2002-09-04 Siemens Aktiengesellschaft Antenna and method for fabricating same
EP1239539A2 (en) * 2001-03-02 2002-09-11 Nokia Corporation Antenna
WO2003026064A1 (en) * 2001-09-13 2003-03-27 Koninklijke Philips Electronics N.V. Wireless terminal
WO2003075398A1 (en) * 2002-03-01 2003-09-12 Ryhaenen Heikki Multifrequency antenna
WO2004057701A1 (en) * 2002-12-22 2004-07-08 Fractus S.A. Multi-band monopole antenna for a mobile communications device
WO2004082072A1 (en) * 2003-03-13 2004-09-23 Kathrein-Werke Kg Multirange antenna with terminal capacitance
EP1475859A1 (en) * 2003-05-07 2004-11-10 Agere Systems Inc. Dual-band antenna for a wireless local area network device
EP1250723B1 (en) * 1999-12-20 2005-03-30 Siemens Aktiengesellschaft Antenna for a communications terminal
US6963309B2 (en) 2001-01-24 2005-11-08 Telefonaktiebolaget Lm Ericsson (Publ) Multi-band antenna for use in a portable telecommunication apparatus
EP1609209A2 (en) * 2003-02-14 2005-12-28 Centurion Wireless Technologies, Inc. Broadband combination meanderline and patch antenna
EP1764862A1 (en) * 2003-05-07 2007-03-21 Agere Systems, Inc. Dual-band antenna for a wireless local area network device
US7423592B2 (en) 2004-01-30 2008-09-09 Fractus, S.A. Multi-band monopole antennas for mobile communications devices
EP2008340A1 (en) * 2006-03-31 2008-12-31 E.M.W. Antenna Co., Ltd Antenna with increased electrical length and wireless communication device including the same
WO2010029304A1 (en) * 2008-09-12 2010-03-18 The University Of Birmingham Multifunctional antenna
US7777689B2 (en) 2006-12-06 2010-08-17 Agere Systems Inc. USB device, an attached protective cover therefore including an antenna and a method of wirelessly transmitting data
US7940218B2 (en) 2001-03-02 2011-05-10 Nokia Corporation Multilayer PCB antenna
US8738103B2 (en) 2006-07-18 2014-05-27 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US9755314B2 (en) 2001-10-16 2017-09-05 Fractus S.A. Loaded antenna
US9761934B2 (en) 1999-09-20 2017-09-12 Fractus, S.A. Multilevel antennae
US9905940B2 (en) 1999-10-26 2018-02-27 Fractus, S.A. Interlaced multiband antenna arrays

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WO2001054225A1 (en) 2000-01-19 2001-07-26 Fractus, S.A. Space-filling miniature antennas
WO2001082410A1 (en) 2000-04-19 2001-11-01 Advanced Automotive Antennas, S.L. Multilevel advanced antenna for motor vehicles
EP1436858A1 (en) 2001-10-16 2004-07-14 Fractus, S.A. Multiband antenna
US6870505B2 (en) * 2002-07-01 2005-03-22 Integral Technologies, Inc. Multi-segmented planar antenna with built-in ground plane

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Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9761934B2 (en) 1999-09-20 2017-09-12 Fractus, S.A. Multilevel antennae
US10056682B2 (en) 1999-09-20 2018-08-21 Fractus, S.A. Multilevel antennae
US9905940B2 (en) 1999-10-26 2018-02-27 Fractus, S.A. Interlaced multiband antenna arrays
EP1250723B1 (en) * 1999-12-20 2005-03-30 Siemens Aktiengesellschaft Antenna for a communications terminal
US6963309B2 (en) 2001-01-24 2005-11-08 Telefonaktiebolaget Lm Ericsson (Publ) Multi-band antenna for use in a portable telecommunication apparatus
DE10108859A1 (en) * 2001-02-14 2003-05-22 Siemens Ag Antenna and processes for their preparation
EP1237224A1 (en) * 2001-02-14 2002-09-04 Siemens Aktiengesellschaft Antenna and method for fabricating same
EP1239539A2 (en) * 2001-03-02 2002-09-11 Nokia Corporation Antenna
US7439919B2 (en) 2001-03-02 2008-10-21 Nokia Corporation Multilayer PCB antenna
EP1239539A3 (en) * 2001-03-02 2003-11-05 Nokia Corporation Antenna
US7940218B2 (en) 2001-03-02 2011-05-10 Nokia Corporation Multilayer PCB antenna
WO2003026064A1 (en) * 2001-09-13 2003-03-27 Koninklijke Philips Electronics N.V. Wireless terminal
US6909911B2 (en) 2001-09-13 2005-06-21 Koninklijke Philips Electronics N.V. Wireless terminal
US9755314B2 (en) 2001-10-16 2017-09-05 Fractus S.A. Loaded antenna
WO2003075398A1 (en) * 2002-03-01 2003-09-12 Ryhaenen Heikki Multifrequency antenna
WO2004057701A1 (en) * 2002-12-22 2004-07-08 Fractus S.A. Multi-band monopole antenna for a mobile communications device
US7411556B2 (en) 2002-12-22 2008-08-12 Fractus, S.A. Multi-band monopole antenna for a mobile communications device
US7675470B2 (en) 2002-12-22 2010-03-09 Fractus, S.A. Multi-band monopole antenna for a mobile communications device
US7403164B2 (en) 2002-12-22 2008-07-22 Fractus, S.A. Multi-band monopole antenna for a mobile communications device
KR101284128B1 (en) * 2003-02-14 2013-07-10 센츄리온 와이어리스 테크놀러지스 인코퍼레이티드 Broadband combination meanderline and patch antenna
EP1609209A2 (en) * 2003-02-14 2005-12-28 Centurion Wireless Technologies, Inc. Broadband combination meanderline and patch antenna
EP1609209A4 (en) * 2003-02-14 2006-04-12 Centurion Wireless Tech Inc Broadband combination meanderline and patch antenna
WO2004082072A1 (en) * 2003-03-13 2004-09-23 Kathrein-Werke Kg Multirange antenna with terminal capacitance
US7358902B2 (en) 2003-05-07 2008-04-15 Agere Systems Inc. Dual-band antenna for a wireless local area network device
EP1475859A1 (en) * 2003-05-07 2004-11-10 Agere Systems Inc. Dual-band antenna for a wireless local area network device
EP1764862A1 (en) * 2003-05-07 2007-03-21 Agere Systems, Inc. Dual-band antenna for a wireless local area network device
US7057560B2 (en) * 2003-05-07 2006-06-06 Agere Systems Inc. Dual-band antenna for a wireless local area network device
US7423592B2 (en) 2004-01-30 2008-09-09 Fractus, S.A. Multi-band monopole antennas for mobile communications devices
EP2008340A4 (en) * 2006-03-31 2009-05-27 Emw Antenna Co Ltd Antenna with increased electrical length and wireless communication device including the same
EP2008340A1 (en) * 2006-03-31 2008-12-31 E.M.W. Antenna Co., Ltd Antenna with increased electrical length and wireless communication device including the same
US8738103B2 (en) 2006-07-18 2014-05-27 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US9899727B2 (en) 2006-07-18 2018-02-20 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US7777689B2 (en) 2006-12-06 2010-08-17 Agere Systems Inc. USB device, an attached protective cover therefore including an antenna and a method of wirelessly transmitting data
WO2010029304A1 (en) * 2008-09-12 2010-03-18 The University Of Birmingham Multifunctional antenna

Also Published As

Publication number Publication date Type
CN1249546A (en) 2000-04-05 application
EP0986130A3 (en) 2000-12-13 application
DK986130T3 (en) grant
EP0986130B1 (en) 2004-08-04 grant
ES2226252T3 (en) 2005-03-16 grant
DK0986130T3 (en) 2004-09-06 grant

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