WO2000057511A1 - Multiband antenna - Google Patents

Multiband antenna Download PDF

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Publication number
WO2000057511A1
WO2000057511A1 PCT/DE2000/000679 DE0000679W WO0057511A1 WO 2000057511 A1 WO2000057511 A1 WO 2000057511A1 DE 0000679 W DE0000679 W DE 0000679W WO 0057511 A1 WO0057511 A1 WO 0057511A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
multiband antenna
resonance frequency
ground
integrable
Prior art date
Application number
PCT/DE2000/000679
Other languages
German (de)
French (fr)
Inventor
Michael Schreiber
Martin Weinberger
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to AU39558/00A priority Critical patent/AU3955800A/en
Priority to DE10080718T priority patent/DE10080718D2/en
Publication of WO2000057511A1 publication Critical patent/WO2000057511A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • 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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/35—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H01Q5/371—Branching current paths

Definitions

  • the present invention relates to a multiband antenna.
  • Previous radio-operated communication terminals are generally characterized by the fact that they have an antenna that cannot be integrated into the device. They have a more or less large stub at the top of the device, in which e.g. a helix antenna or a printed circuit board serving as an antenna.
  • this stub is rejected for design reasons.
  • the stub can also interfere with carrying the mobile phone in your pocket.
  • the dimensions of the devices are getting smaller and smaller, which is an additional problem for the antenna design, since the space available for the antenna is also limited.
  • the object of the present invention is to provide an antenna of the type mentioned at the outset which has no stub, can be integrated in the communication terminal housing and has the required dual-band capability.
  • the antenna mentioned at the outset consists of a metallic, essentially rectangular overall surface lying above a ground surface and connected to one or more supply and ground contacts, which has a long surface for radiating two independent frequencies has an outer path for a low resonance frequency and a roughly rectangular inner structure for a higher resonance frequency.
  • the antenna according to the invention can be easily integrated into a small communication terminal and is easy to manufacture.
  • the dual-band capability of the antenna according to the invention is achieved in that it is essentially a combination of a patch-inverted-F antenna (PIFA) for the GSM band ( ⁇ / 4 resonance) and a patch antenna for the PCN -Band ( ⁇ / 2 resonance).
  • PIFA patch-inverted-F antenna
  • the fact that the different bands use the same geometrical areas of the antenna means that the antenna requires very little space.
  • FIGS. 1 to 6 show different specific exemplary configurations of a multiband antenna that can be integrated according to the invention.
  • FIGS. 7 and 8 schematically show the basic design options of the multiband antenna according to the invention.
  • the structure of the antenna according to the invention will first be described with reference to FIG. 1.
  • the large area FI and the path P running along the outside of the circumference roughly represent the PIFA antenna for the GSM band. This, in order to be properly adapted, requires a ground contact M.
  • the same area FI and the notched rectangular area F2 located in the interior of the antenna approximately represent the patch antenna for the PCN band. An almost arbitrary shape of this area would be conceivable.
  • the triangular notch results in a lower resonance frequency.
  • the notch achieves a wider range than with a purely rectangular structure.
  • the two antenna areas can be tuned almost independently of one another by the outer path, i.e. the outer frame or the circumference of the antenna or the lower edge is lengthened or shortened, which leads to a displacement of the two bands or increases or decreases the inner surface, which only influences the PCN band.
  • Another way of influencing is to choose the connection location of the ground contact.
  • FIG. 2 shows a variant of the antenna of FIG. 1, which has its origin in the fact that it is generally favorable for the antenna properties if the leads are made via short wires. If the available contact point for the supply is unfavorable, the antenna shape can be adjusted accordingly.
  • FIGS. 3 to 6 show further possible antenna shapes.
  • the antenna need not be rectangular, but can also have curved shapes in order to be better integrated into an existing housing. It is also possible that the antenna is not made purely planar, but has areas with different heights and slopes.
  • the part responsible for the higher frequency can also have any other shape and can also be galvanically coupled at other points (for example on the right edge of the antenna, see FIG. 6, depending on the required resonance frequency).
  • the path running outside can also be made thicker or thinner. Furthermore, the path does not have to have a constant width, as can be clearly seen in FIG.
  • the structural dimension required for the electrical length of the PIF antenna (low frequency) can be rotated around the circumference as desired. This results in an imaginable structure division according to FIGS. 7 and 8, the position of the feed or ground contacts being arbitrary on the
  • Structural elements can be positioned (see in particular Figure 8).
  • the ground plane does not have to be planar either. It can also be structured or curved, so that it is possible to position the antenna, for example, via a screen cover.

Abstract

The antenna consists of a metallic, essentially rectangular surface which is arranged over a ground surface and is connected to one or more supply and ground contacts. Said rectangular surface has a long outer path for a low resonance frequency and a roughly rectangular inner structure for a higher resonance frequency so that it can emit two independent frequencies.

Description

Beschreibungdescription
Multiband-AntenneMultiband antenna
Die vorliegende Erfindung betrifft eine Multiband-Antenne.The present invention relates to a multiband antenna.
Bisherige funkbetriebene Kommunikationsendgeräte zeichnen sich im allgemeinen dadurch aus, daß sie über eine nicht in das Gerät integrierbare Antenne verfügen. Sie besitzen einen mehr oder weniger großen Stummel am oberen Ende des Gerätes, in welchem sich z.B. eine Helix-Antenne oder eine als Antenne dienende gedruckte Schaltungsplatine befindet.Previous radio-operated communication terminals are generally characterized by the fact that they have an antenna that cannot be integrated into the device. They have a more or less large stub at the top of the device, in which e.g. a helix antenna or a printed circuit board serving as an antenna.
Aus Designgründen wird dieser Stummel in vielen Fällen abge- lehnt. Ebenso kann der Stummel beim Tragen des Mobiltelefons in der Tasche stören.In many cases this stub is rejected for design reasons. The stub can also interfere with carrying the mobile phone in your pocket.
Gleichzeitig ist ein starker Trend zu funkbetriebenen Kommunikationsendgeräten festzustellen, die sowohl im GSM- als auch im PCN-Band betrieben werden können. Dazu muß die Antenne in beiden Bändern arbeiten können.At the same time, there is a strong trend towards radio-operated communication terminals that can be operated in both the GSM and PCN bands. For this, the antenna must be able to work in both bands.
Hinzu kommt, daß die Geräte in ihren Abmessungen immer kleiner werden, was ein zusätzliches Problem für das Antennen- design darstellt, da auch der verfügbare Platz für die Antenne eingeschränkt ist.In addition, the dimensions of the devices are getting smaller and smaller, which is an additional problem for the antenna design, since the space available for the antenna is also limited.
Aufgabe der vorliegenden Erfindung ist es, eine Antenne der eingangs genannten Art anzugeben, welche keinen Stummel auf- weist, im Kommunikationsendgerätegehäuse integrierbar ist und die geforderte Dualbandfähigkeit besitzt.The object of the present invention is to provide an antenna of the type mentioned at the outset which has no stub, can be integrated in the communication terminal housing and has the required dual-band capability.
Zur Lösung dieser Aufgabe besteht die eingangs genannte Antenne aus einer über einer Massefläche liegenden, mit einem oder mehreren Speise- und Massekontakten verbundenen metallischen im wesentlichen rechteckförmigen Gesamtfläche, welche zur Abstrahlung zweier unabhängiger Frequenzen einen langen ausseren Pfad für eine niedrige Resonanzfrequenz und eine grob rechteckige innere Struktur für eine höhere Resonanzfrequenz aufweist.To achieve this object, the antenna mentioned at the outset consists of a metallic, essentially rectangular overall surface lying above a ground surface and connected to one or more supply and ground contacts, which has a long surface for radiating two independent frequencies has an outer path for a low resonance frequency and a roughly rectangular inner structure for a higher resonance frequency.
Die erfmdungsgemaße Antenne ist ohne große Probleme selbst in einem kleinen Kommunikationsendgerat integrierbar und sie ist einfach herzustellen. Die Dualbandfahigkeit erreicht die erfmdungsgemaße Antenne dadurch, daß es sich bei ihr im wesentlichen um eine Kombination aus einer Patch-Inverted-F- Antenne (PIFA) für das GSM-Band (λ/4-Resonanz) und einer Patch-Antenne für das PCN-Band (λ/2-Resonanz) handelt. Dadurch, daß die verschiedenen Bander zum Teil gleiche geometrische Bereiche der Antenne benutzen, ergibt sich ein sehr geringer Platzbedarf für die Antenne.The antenna according to the invention can be easily integrated into a small communication terminal and is easy to manufacture. The dual-band capability of the antenna according to the invention is achieved in that it is essentially a combination of a patch-inverted-F antenna (PIFA) for the GSM band (λ / 4 resonance) and a patch antenna for the PCN -Band (λ / 2 resonance). The fact that the different bands use the same geometrical areas of the antenna means that the antenna requires very little space.
Weitere wesentliche Weiterbildungen der erfmdungsgemaßen Antenne ergeben sich aus den Unteranspruchen sowie der nachfolgenden Beschreibung von Ausfuhrungsbeispielen der erfmdungs- gemaßen Antenne.Further essential developments of the antenna according to the invention result from the subclaims and the following description of exemplary embodiments of the antenna according to the invention.
Nachfolgend soll die Erfindung anhand mehrerer Ausfuhrungs- beispiele naher beschrieben werden.The invention will be described in more detail below with the aid of several exemplary embodiments.
Die Figuren 1 bis 6 zeigen unterschiedliche konkrete bei- spielhafte Ausgestaltungen einer erfmdungsgemaßen integrierbaren Multiband-Antenne.FIGS. 1 to 6 show different specific exemplary configurations of a multiband antenna that can be integrated according to the invention.
Die Figuren 7 und 8 zeigen schematisch prinzipielle Aufbau- moglichkeiten der erf dungsgemaßen Multiband-Antenne.FIGS. 7 and 8 schematically show the basic design options of the multiband antenna according to the invention.
Der Aufbau der erfmdungsgemaßen Antenne soll zunächst anhand von Figur 1 beschrieben werden. Die große Flache FI und der außen am Umfang entlangfuhrende Pfad P stellen grob die PIFA- Antenne für das GSM-Band dar. Dieses benotigt, um richtig an- gepaßt zu sein, einen Massekontakt M. Die gleiche Fläche FI und die im Innenbereich der Antenne liegende eingekerbte rechteckförmige Fläche F2 stellen näherungsweise die Patch-Antenne für das PCN-Band dar. Denkbar wäre eine nahezu beliebige Form dieser Fläche. Durch die dreieckige Einkerbung ergibt sich allerdings eine niedrigere Resonanzfrequenz. Außerdem wird durch die Einkerbung eine größere Bandbreite als bei einer rein rechteckigen Struktur erreicht.The structure of the antenna according to the invention will first be described with reference to FIG. 1. The large area FI and the path P running along the outside of the circumference roughly represent the PIFA antenna for the GSM band. This, in order to be properly adapted, requires a ground contact M. The same area FI and the notched rectangular area F2 located in the interior of the antenna approximately represent the patch antenna for the PCN band. An almost arbitrary shape of this area would be conceivable. However, the triangular notch results in a lower resonance frequency. In addition, the notch achieves a wider range than with a purely rectangular structure.
Die beiden Antennenbereiche lassen sich nahezu unabhängig voneinander abstimmen, indem man den äußeren Pfad, d.h. den Außenrahmen bzw. den Umfang der Antenne oder die untere Kante verlängert oder verkürzt, was zu einer Verschiebung der beiden Bänder führt bzw. die Innenfläche vergrößert oder ver- kleinert, was lediglich zu einer Beeinflussung des PCN-Bandes führt. Eine weitere Möglichkeit der Beeinflussung besteht in der Wahl des Anschlußortes des Massekontaktes.The two antenna areas can be tuned almost independently of one another by the outer path, i.e. the outer frame or the circumference of the antenna or the lower edge is lengthened or shortened, which leads to a displacement of the two bands or increases or decreases the inner surface, which only influences the PCN band. Another way of influencing is to choose the connection location of the ground contact.
Figur 2 zeigt eine Variante der Antenne von Figur 1, welche ihren Ursprung darin hat, daß es im allgemeinen günstig für die Antenneneigenschaften ist, wenn die Zuleitungen über kurze Drähte erfolgen. Falls nun die verfügbare Kontaktstelle für die Speisung ungünstig liegt, läßt sich die Antennenform entsprechend anpassen.FIG. 2 shows a variant of the antenna of FIG. 1, which has its origin in the fact that it is generally favorable for the antenna properties if the leads are made via short wires. If the available contact point for the supply is unfavorable, the antenna shape can be adjusted accordingly.
Weitere mögliche Antennenformen zeigen die Figuren 3 bis 6. Selbstverständlich muß die Antenne nicht rechteckig sein, sondern kann auch geschwungene Formen aufweisen, um besser in ein bestehendes Gehäuse integriert zu werden. Ebenso ist es möglich, daß die Antenne nicht rein planar ausgeführt wird, sondern Bereiche mit unterschiedlichen Höhen und Steigungen aufweist.FIGS. 3 to 6 show further possible antenna shapes. Of course, the antenna need not be rectangular, but can also have curved shapes in order to be better integrated into an existing housing. It is also possible that the antenna is not made purely planar, but has areas with different heights and slopes.
Der für die höhere Frequenz zuständige Teil kann auch belie- bige andere Formen haben und auch an anderen Stellen galvanisch gekoppelt sein (z.B. an der rechten Kante der Antenne, siehe Figur 6, je nach geforderter Resonanzfrequenz) . Der außen verlaufende Pfad kann auch dicker oder dünner ausgestaltet sein. Weiterhin muß der Pfad nicht eine konstante Breite aufweisen, wie in Figur 6 gut erkennbar ist.The part responsible for the higher frequency can also have any other shape and can also be galvanically coupled at other points (for example on the right edge of the antenna, see FIG. 6, depending on the required resonance frequency). The path running outside can also be made thicker or thinner. Furthermore, the path does not have to have a constant width, as can be clearly seen in FIG.
Die für die elektrische Länge der PIF-Antenne (niedrige Frequenz) nötige Strukturabmessung kann beliebig um den Umfang herum verdreht sein. Es ergibt sich dadurch eine vorstellbare Strukturaufteilung entsprechend den Figuren 7 und 8, wobei die Lage der Speise- bzw. Massekontakte beliebig auf denThe structural dimension required for the electrical length of the PIF antenna (low frequency) can be rotated around the circumference as desired. This results in an imaginable structure division according to FIGS. 7 and 8, the position of the feed or ground contacts being arbitrary on the
Strukturelementen positioniert sein kann (siehe insbesondere Figur 8) .Structural elements can be positioned (see in particular Figure 8).
Abschließend wäre noch festzustellen, daß auch die Masseflä- ehe nicht planar sein muß. Sie kann auch strukturiert oder gewölbt sein, so daß es möglich ist, die Antenne beispielsweise über einen Schirmdeckel zu positionieren. Finally, it should be noted that the ground plane does not have to be planar either. It can also be structured or curved, so that it is possible to position the antenna, for example, via a screen cover.

Claims

Patentansprüche claims
1. Integrierbare Multiband-Antenne, bestehend aus einer über einer Massefläche liegenden, mit einem oder mehreren Spei- se- und Massekontakten verbundenen metallischen im wesentlichen rechteckförmigen Gesamtfläche, welche zur Abstrah- lung zweier unabhängiger Frequenzen einen langen äußeren Pfad für eine niedrige Resonanzfrequenz und eine grob rechteckige innere Struktur für eine höhere Resonanzfre- quenz aufweist.1. Integrable multiband antenna, consisting of a metallic, essentially rectangular overall surface lying above a ground surface and connected to one or more feed and ground contacts, which has a long outer path for a low resonance frequency and a radiation for radiation of two independent frequencies has a roughly rectangular inner structure for a higher resonance frequency.
2. Integrierbare Multiband-Antenne nach Anspruch 1, dadurch gekennzeichnet, daß die Höhe der metallischen Gesamtfläche über der Massefläche variieren kann.2. Integrable multiband antenna according to claim 1, characterized in that the height of the total metallic surface can vary above the ground surface.
Integrierbare Multiband-Antenne nach Anspruch 1, , dadurch gekennzeichnet , daß der Pfad (P, FI) und die innere Struktur (F2) unabhängig voneinander abstimmbar sind. Integrable multiband antenna according to Claim 1, characterized in that the path (P, FI) and the inner structure (F2) can be tuned independently of one another.
PCT/DE2000/000679 1999-03-24 2000-03-03 Multiband antenna WO2000057511A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU39558/00A AU3955800A (en) 1999-03-24 2000-03-03 Multiband antenna
DE10080718T DE10080718D2 (en) 1999-03-24 2000-03-03 Multiband antenna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19913372.7 1999-03-24
DE19913372 1999-03-24

Publications (1)

Publication Number Publication Date
WO2000057511A1 true WO2000057511A1 (en) 2000-09-28

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PCT/DE2000/000679 WO2000057511A1 (en) 1999-03-24 2000-03-03 Multiband antenna

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AU (1) AU3955800A (en)
DE (1) DE10080718D2 (en)
WO (1) WO2000057511A1 (en)

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WO2001080355A1 (en) * 2000-04-18 2001-10-25 Telefonaktiebolaget Lm Ericsson (Publ) A multi-band antenna for use in a portable telecommunication apparatus
US7486242B2 (en) 2002-06-25 2009-02-03 Fractus, S.A. Multiband antenna for handheld terminal
US7999743B2 (en) 2003-01-24 2011-08-16 Hewlett-Packard Development Company, L.P. Multiband antenna array for mobile radio equipment
US8738103B2 (en) 2006-07-18 2014-05-27 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US8941541B2 (en) 1999-09-20 2015-01-27 Fractus, S.A. Multilevel antennae

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Cited By (20)

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Publication number Priority date Publication date Assignee Title
US9054421B2 (en) 1999-09-20 2015-06-09 Fractus, S.A. Multilevel antennae
US8941541B2 (en) 1999-09-20 2015-01-27 Fractus, S.A. Multilevel antennae
US8976069B2 (en) 1999-09-20 2015-03-10 Fractus, S.A. Multilevel antennae
US9000985B2 (en) 1999-09-20 2015-04-07 Fractus, S.A. Multilevel antennae
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
US9240632B2 (en) 1999-09-20 2016-01-19 Fractus, S.A. Multilevel antennae
US9362617B2 (en) 1999-09-20 2016-06-07 Fractus, S.A. Multilevel antennae
US6504511B2 (en) 2000-04-18 2003-01-07 Telefonaktiebolaget Lm Ericsson (Publ) Multi-band antenna for use in a portable telecommunications apparatus
WO2001080355A1 (en) * 2000-04-18 2001-10-25 Telefonaktiebolaget Lm Ericsson (Publ) A multi-band antenna for use in a portable telecommunication apparatus
US7486242B2 (en) 2002-06-25 2009-02-03 Fractus, S.A. Multiband antenna for handheld terminal
US7903037B2 (en) 2002-06-25 2011-03-08 Fractus, S.A. Multiband antenna for handheld terminal
US7999743B2 (en) 2003-01-24 2011-08-16 Hewlett-Packard Development Company, L.P. Multiband antenna array for mobile radio equipment
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
US9099773B2 (en) 2006-07-18 2015-08-04 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US10644380B2 (en) 2006-07-18 2020-05-05 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US11031677B2 (en) 2006-07-18 2021-06-08 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US11349200B2 (en) 2006-07-18 2022-05-31 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US11735810B2 (en) 2006-07-18 2023-08-22 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices

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DE10080718D2 (en) 2002-02-28

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