WO2001086753A1 - Mobile telephone with a flat antenna - Google Patents

Mobile telephone with a flat antenna Download PDF

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Publication number
WO2001086753A1
WO2001086753A1 PCT/DE2001/001563 DE0101563W WO0186753A1 WO 2001086753 A1 WO2001086753 A1 WO 2001086753A1 DE 0101563 W DE0101563 W DE 0101563W WO 0186753 A1 WO0186753 A1 WO 0186753A1
Authority
WO
WIPO (PCT)
Prior art keywords
flat antenna
antenna
housing
mobile telephone
mobile phone
Prior art date
Application number
PCT/DE2001/001563
Other languages
German (de)
French (fr)
Inventor
Jürgen HACKERT
Axel Schäfer
Original Assignee
Bolta-Werke Gmbh
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 Bolta-Werke Gmbh filed Critical Bolta-Werke Gmbh
Priority to AU73854/01A priority Critical patent/AU7385401A/en
Publication of WO2001086753A1 publication Critical patent/WO2001086753A1/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

Definitions

  • the invention relates to a mobile phone (cell phone) with a flat antenna provided in the housing of the cell phone.
  • Mobile phones are designed for either a single frequency band or for different frequency bands.
  • the so-called D network operates in the frequency range between 880 and 960 MHz and the so-called E network in the frequency range between 1710 and 1880 MHz.
  • Other cellular networks operate in other frequency ranges.
  • the flat antenna arranged on the inside of the rear wall of the cell phone housing has so far been realized in 2-component technology.
  • the areas corresponding to the flat antenna structure consist of a metallizable plastic.
  • the metallization of these surface areas is done by galvanic or chemical means.
  • the metal coating requires one
  • the invention has for its object to provide a mobile phone with a flat antenna that is simple and inexpensive to implement.
  • the flat antenna consists of an embossed metal foil.
  • an embossed flat antenna is simple and inexpensive to manufacture.
  • design changes to the flat antenna are comparatively simple because only the stamping die has to be modified accordingly.
  • the metal foil of the flat antenna can be embossed on an antenna substrate arranged in the mobile phone housing.
  • the respective antenna substrate can be, for example, a plate made of a plastic material.
  • the metal foil of the flat antenna is embossed on the inside of a housing shell of the mobile phone housing.
  • the flat antenna is embossed on an antenna substrate or on the inside of a housing shell of the mobile phone housing, care must of course be taken to ensure that the flat antenna is contacted with the electronic circuit of the mobile phone.
  • Metal foils as used according to the invention are described, for example, in patent applications 198 57 157, 199 32 597 and 199 37 843.
  • FIG. 1 shows a top view of a housing shell with a flat antenna
  • FIG. 2 shows a section along the section line II-II in Figure 1 through the housing shell and the flat antenna
  • FIG. 3 shows a flat antenna imprinted on an antenna substrate for a
  • FIGS. 1 and 2 show a housing shell 10 of a housing
  • a metal foil 14 with a structure or edge contour 18 forming a flat antenna 16 is stamped firmly.
  • the metal foil is, for example, a copper foil which can have a metal coating on its inner surface 20.
  • FIG. 3 shows, in a sectional illustration similar to FIG. 2, an antenna substrate 22 onto which a metal foil 14 with an edge contour 18 forming a flat antenna 16 is stamped firmly.
  • the metal foil 14 is embossed on the inside 12 of a housing shell 10 of a cell phone housing or on an antenna substrate 22 which is arranged in a cell phone housing, the result is a flat antenna which is simple and inexpensive to implement and whose design is comparatively simple if necessary is changeable.

Abstract

The invention relates to a mobile telephone, comprising a flat antenna (16) which is provided in the housing of said mobile telephone and which is economical to produce. Said flat antenna (16) consists of an embossed metal foil (14). Said metal foil can be embossed onto the inside (12) of a housing shell (10) of the mobile telephone device or onto an antenna substrate (22) located in the mobile telephone housing.

Description

Mobiltelefon mit einer FlachantenneMobile phone with a flat antenna
Die Erfindung betrifft ein Mobiltelefon (Handy) mit einer im Gehäuse des Mobiltelefons vorgesehenen Flachantenne.The invention relates to a mobile phone (cell phone) with a flat antenna provided in the housing of the cell phone.
Mobiltelefone sind entweder für ein einziges Frequenzband oder für verschieden Frequenzbänder vorgesehen. Beispielsweise arbeitet das sogenannte D-Netz im Frequenzbereich zwischen 880 und 960 MHz und das sogenannte E-Netz im Frequenzbereich zwischen 1710 und 1880 MHz. Andere Mobilfunknetze arbeiten in anderen Frequenzbereichen.Mobile phones are designed for either a single frequency band or for different frequency bands. For example, the so-called D network operates in the frequency range between 880 and 960 MHz and the so-called E network in the frequency range between 1710 and 1880 MHz. Other cellular networks operate in other frequency ranges.
Mobiltelefone mit einer Stabantenne besitzen eine gleichmäßigeCell phones with a rod antenna have a uniform one
Abstrahlungscharakteristik der Stabantenne. Ein beträchtlicher Energieanteil wird vom Körper bzw. insbesondere vom Kopf des Handy-Benutzers absorbiert. Dieser Anteil liegt bei größenordnungsmäßig 38 % der eingespeisten Leistung. Ca. 12 % der eingespeisten Leistung werden von der Hand des Handy-Benutzers absorbiert. Da weder Leitungsverluste noch dielektrische Verluste auftreten, werden folglich ca. 50 % der eingestrahlten Leistung absorbiert bzw. ca. 50 % der in eine solche Stabantenne eines Mobiltelefones eingespeisten Leistung tatsächlich abgestrahlt.Radiation characteristics of the rod antenna. A considerable amount of energy is absorbed by the body or, in particular, the head of the cell phone user. This share is of the order of 38% of the input power. Approximately 12% of the power fed in is absorbed by the hand of the mobile phone user. Since neither line losses nor dielectric losses occur, approximately 50% of the radiated power is consequently absorbed or approximately 50% of the power fed into such a rod antenna of a mobile telephone is actually radiated.
Der Einfluß elektromagnetischer Wellen auf den Kopf eines Handy-Benutzers ist bislang nicht geklärt bzw. umstritten, eine Verbesserung der Antennencharakteristik führt jedoch zu einer geringeren Belastung des Kopfes eines Handy-Benutzers bei einer gleichzeitigen Verbesserung der Übertragungsqualität, weil bei gleicher elektrischer Energie die Sendequalität des entsprechenden Handy's verbessert wird. Zu diesem Zwecke, d.h. zur Verbesserung der Antennencharakteristik bezüglich einer Reduktion der Belastung des Kopfes des Handy-Benutzers bei gleichzeitiger Verbesserung der Übertragungsqualität sind Flachantennen bekannt, die an der Innenseite der Rückwand des Handy-Gehäuses angeordnet sind. Derartige Flachantennen ergeben eine Reduktion der im Kopf des Handy-Benutzers absorbierten Leistung von den oben genannten größenordnungsmäßig 38 % auf ca. 7 %. Die in der Hand des Handy-Benutzers absorbierte Leistung erhöht sich jedoch von den genannten ca. 12 % auf größenordnungsmäßig 23 %. Bei solchen Flachantennen werden also ca. 70 % der elektrischen Leistung tatsächlich abgestrahlt.The influence of electromagnetic waves on the head of a cell phone user has not yet been clarified or controversial, but an improvement in the antenna characteristics leads to less stress on the head of a cell phone user and a simultaneous improvement in the transmission quality because, with the same electrical energy, the transmission quality of the corresponding cell phone ' s is improved. For this purpose, ie to improve the antenna characteristics with regard to a reduction in the load on the head of the cell phone user while improving the transmission quality, flat antennas are known which are arranged on the inside of the rear wall of the cell phone housing. Such flat antennas result in a reduction in the power absorbed in the head of the mobile phone user from the above-mentioned order of magnitude 38% to approx. 7%. However, the power absorbed in the hand of the mobile phone user increases from the approx. 12% mentioned to an order of magnitude of 23%. With such flat antennas, approximately 70% of the electrical power is actually radiated.
Bei den bekannten Mobiltelefonen wird die an der Innenseite der Rückwand des Handy-Gehäuses angeordnete Flachantenne bislang in 2-K-Technik realisiert. Die der Flachantennenstruktur entsprechenden Bereiche bestehen aus einem metallisierbaren Kunststoff. Die Metallisierung dieser Flächenbereiche geschieht auf galvanischem oder chemischem Wege. Die Metallbeschichtung bedingt einenIn the known cell phones, the flat antenna arranged on the inside of the rear wall of the cell phone housing has so far been realized in 2-component technology. The areas corresponding to the flat antenna structure consist of a metallizable plastic. The metallization of these surface areas is done by galvanic or chemical means. The metal coating requires one
Herstellungsaufwand, der sich auf die Herstellungskosten entsprechend auswirkt. Ein weiterer Mangel solchermaßen in 2-K-Technik hergestellter Flachantennen besteht darin, daß Designänderungen der Flachantenne kaum bzw. nur mit erheblichem Aufwand möglich sind.Manufacturing expenses that affect manufacturing costs accordingly. Another shortcoming of flat antennas manufactured in this way in 2-component technology is that design changes to the flat antenna are hardly possible or only with considerable effort.
Der Erfindung liegt die Aufgabe zugrunde, ein Mobiltelefon mit einer Flachantenne zu schaffen, die einfach und preisgünstig realisierbar ist.The invention has for its object to provide a mobile phone with a flat antenna that is simple and inexpensive to implement.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 , d.h. dadurch gelöst, daß die Flachantenne aus einer geprägten Metallfolie besteht. Eine solche geprägte Flachantenne ist einfach und preisgünstig herstellbar. Ein weiterer Vorteil einer solchen Flachantenne besteht darin, daß Designänderungen der Flachantenne vergleichsweise einfach möglich sind, weil nur der Prägestempel entsprechend modifiziert werden muß. Erfindungsgemäß kann die Metallfolie der Flachantenne auf ein im Mobiltelefon- Gehäuse angeordnetes Antennensubstrat geprägt sein. Eine derartige Ausbildung weist den Vorteil auf, daß die auf das Antennensubstrat geprägte Flachantenne bei verschiedenen Mobiltelefonen problemlos zur Anwendung gelangen kann. Bei dem jeweiligen Antennensubstrat kann es sich beispielsweise um ein Plättchen aus einem Kunststoffmaterial handeln.This object is achieved by the features of claim 1, that is, in that the flat antenna consists of an embossed metal foil. Such an embossed flat antenna is simple and inexpensive to manufacture. Another advantage of such a flat antenna is that design changes to the flat antenna are comparatively simple because only the stamping die has to be modified accordingly. According to the invention, the metal foil of the flat antenna can be embossed on an antenna substrate arranged in the mobile phone housing. Such a design has the advantage that the flat antenna embossed on the antenna substrate can be used without problems in various mobile telephones. The respective antenna substrate can be, for example, a plate made of a plastic material.
Eine andere Möglichkeit besteht darin, daß die Metallfolie der Flachantenne auf die Innenseite einer Gehäuseschale des Mobiltelefon-Gehäuses geprägt ist.Another possibility is that the metal foil of the flat antenna is embossed on the inside of a housing shell of the mobile phone housing.
Unabhängig davon, ob die Flachantenne auf ein Antennensubstrat oder auf die Innenseite einer Gehäuseschale des Mobiltelefon-Gehäuses geprägt ist, ist selbstverständlich dafür Sorge zu tragen, daß die Flachantenne mit der elektronischen Schaltung des Mobiltelefones kontaktiert ist.Regardless of whether the flat antenna is embossed on an antenna substrate or on the inside of a housing shell of the mobile phone housing, care must of course be taken to ensure that the flat antenna is contacted with the electronic circuit of the mobile phone.
Metallfolien, wie sie erfindungsgemäß zur Anwendung gelangen, sind beispielsweise in den Patentanmeldungen 198 57 157, 199 32 597 und 199 37 843 beschrieben.Metal foils as used according to the invention are described, for example, in patent applications 198 57 157, 199 32 597 and 199 37 843.
Weitere Einzelheiten, Merkmale und Vorteile ergeben sich aus der nachfolgenden Beschreibung von in der Zeichnung dargestellten Ausbildungen einer Flachantenne für ein Mobiltelefon (Handy). Es zeigen:Further details, features and advantages result from the following description of designs of a flat antenna for a mobile phone (cell phone) shown in the drawing. Show it:
Figur 1 eine Gehäuseschale mit einer Flachantenne in einer Draufsicht,FIG. 1 shows a top view of a housing shell with a flat antenna,
Figur 2 einen Schnitt entlang der Schnittlinie ll-ll in Figur 1 durch die Gehäuseschale und die Flachantenne, und2 shows a section along the section line II-II in Figure 1 through the housing shell and the flat antenna, and
Figur 3 eine auf ein Antennensubstrat aufgeprägte Flachantenne für einFIG. 3 shows a flat antenna imprinted on an antenna substrate for a
Mobiltelefon (Handy). Die Figuren 1 und 2 zeigen eine Gehäuseschale 10 eines Gehäuses einesMobile phone (cell phone). Figures 1 and 2 show a housing shell 10 of a housing
Mobiltelefones (Handy). Auf die Innenseite 12 der Gehäuseschale 10, die aus einem geeigneten Kunststoff material besteht, ist eine Metallfolie 14 mit einer eine Flachantenne 16 bildenden Strukturierung bzw. Randkontur 18 festhaftend aufgeprägt. Bei der Metallfolie handelt es sich beispielsweise um eine Kupferfolie, die auf ihrer Innenfläche 20 eine Metallbeschichtung aufweisen kann.Mobile phones. On the inside 12 of the housing shell 10, which consists of a suitable plastic material, a metal foil 14 with a structure or edge contour 18 forming a flat antenna 16 is stamped firmly. The metal foil is, for example, a copper foil which can have a metal coating on its inner surface 20.
Figur 3 zeigt in einer der Figur 2 ähnlichen Schnittdarstellung ein Antennensubstrat 22, auf das eine Metallfolie 14 mit einer eine Flachantenne 16 bildenden Randkontur 18 festhaftend aufgeprägt ist.FIG. 3 shows, in a sectional illustration similar to FIG. 2, an antenna substrate 22 onto which a metal foil 14 with an edge contour 18 forming a flat antenna 16 is stamped firmly.
Unabhängig davon, ob die Metallfolie 14 auf die Innenseite 12 einer Gehäuseschale 10 eines Mobiltelefon-Gehäuses oder auf ein Antennensubstrat 22 geprägt wird, das in einem Mobiltelefon-Gehäuse angeordnet wird, ergibt sich eine einfach und preisgünstig realisierbare Flachantenne, deren Design im Bedarfsfall vergleichsweise einfach veränderbar ist. Regardless of whether the metal foil 14 is embossed on the inside 12 of a housing shell 10 of a cell phone housing or on an antenna substrate 22 which is arranged in a cell phone housing, the result is a flat antenna which is simple and inexpensive to implement and whose design is comparatively simple if necessary is changeable.

Claims

Ansprüche Expectations
1. Mobiltelefon (Handy) mit einer im Gehäuse des Mobiltelefones vorgesehenen Flachantenne (16), dadurch gekennzeic net, daß die Flachantenne (16) aus einer geprägten Metallfolie (14) besteht.1. Mobile phone (cell phone) with a flat antenna (16) provided in the housing of the cell phone, characterized in that the flat antenna (16) consists of an embossed metal foil (14).
2. Mobiltelefon nach Anspruch 1 , dadurch gekennzeichnet, daß die Metallfolie (14) der Flachantenne (16) auf ein im Mobiltelefon-Gehäuse angeordnetes Antennensubstrat (22) geprägt ist.2. Mobile phone according to claim 1, characterized in that the metal foil (14) of the flat antenna (16) is embossed on an antenna substrate (22) arranged in the mobile phone housing.
3. Mobiltelefon nach Anspruch 1 , dadurch gekennzeichnet, daß die Metallfolie (14) der Flachantenne (16) auf die Innenseite (12) einer3. Mobile phone according to claim 1, characterized in that the metal foil (14) of the flat antenna (16) on the inside (12)
Gehäuseschale (10) des Mobiltelefon-Gehäuses geprägt ist. Housing shell (10) of the mobile phone housing is stamped.
PCT/DE2001/001563 2000-05-05 2001-04-24 Mobile telephone with a flat antenna WO2001086753A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU73854/01A AU7385401A (en) 2000-05-05 2001-04-24 Mobile telephone with a flat antenna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000121880 DE10021880A1 (en) 2000-05-05 2000-05-05 Mobile phone has in-built flat antenna with embossed metal foil
DE10021880.6 2000-05-05

Publications (1)

Publication Number Publication Date
WO2001086753A1 true WO2001086753A1 (en) 2001-11-15

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DE (1) DE10021880A1 (en)
WO (1) WO2001086753A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8941541B2 (en) 1999-09-20 2015-01-27 Fractus, S.A. Multilevel antennae
US9099773B2 (en) 2006-07-18 2015-08-04 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US9331382B2 (en) 2000-01-19 2016-05-03 Fractus, S.A. Space-filling miniature antennas

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI116333B (en) 2003-09-11 2005-10-31 Lk Products Oy A method for mounting a radiator in a radio apparatus and a radio apparatus

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US4123756A (en) * 1976-09-24 1978-10-31 Nippon Electric Co., Ltd. Built-in miniature radio antenna
WO1999043041A1 (en) * 1998-02-20 1999-08-26 Qualcomm Incorporated Substrate antenna incorporating an element preventing the coupling of energy between antenna and conductors
WO1999056345A1 (en) * 1998-04-24 1999-11-04 Intenna Technology Ab Multiple band antenna device

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
US4123756A (en) * 1976-09-24 1978-10-31 Nippon Electric Co., Ltd. Built-in miniature radio antenna
WO1999043041A1 (en) * 1998-02-20 1999-08-26 Qualcomm Incorporated Substrate antenna incorporating an element preventing the coupling of energy between antenna and conductors
WO1999056345A1 (en) * 1998-04-24 1999-11-04 Intenna Technology Ab Multiple band antenna device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10056682B2 (en) 1999-09-20 2018-08-21 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
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
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
US9761934B2 (en) 1999-09-20 2017-09-12 Fractus, S.A. Multilevel antennae
US9331382B2 (en) 2000-01-19 2016-05-03 Fractus, S.A. Space-filling miniature antennas
US10355346B2 (en) 2000-01-19 2019-07-16 Fractus, S.A. Space-filling miniature antennas
US9099773B2 (en) 2006-07-18 2015-08-04 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
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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Publication number Publication date
DE10021880A1 (en) 2001-11-08
AU7385401A (en) 2001-11-20

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