DE19526638A1 - Mobile telephone rod-aerial system - Google Patents

Mobile telephone rod-aerial system

Info

Publication number
DE19526638A1
DE19526638A1 DE1995126638 DE19526638A DE19526638A1 DE 19526638 A1 DE19526638 A1 DE 19526638A1 DE 1995126638 DE1995126638 DE 1995126638 DE 19526638 A DE19526638 A DE 19526638A DE 19526638 A1 DE19526638 A1 DE 19526638A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
antenna
rod
mobile telephone
aerial system
head
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Withdrawn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
DE1995126638
Other languages
German (de)
Inventor
Dieter Dipl Ing Nowatzky
Horst Dipl Ing Jaworek
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.)
Deutsche Telekom AG
Original Assignee
Deutsche Telekom 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

Links

Classifications

    • 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
    • H01Q1/245Supports; 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 means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827Portable transceivers
    • H04B1/3833Hand-held transceivers

Abstract

The rod-aerial system includes an aerial on the microphone side of the handset which is arranged so that it is pointing downwards, i.e on the underside of the handset. The spacing to the head and particularly to the eye is considerably increased in this arrangement under the microphone, so the radiation health hazard is considerably reduced in comparison with known equipment.

Description

Die Erfindung bezieht sich auf die Anordnung einer Stab antenne an einem Handfunktelefon. The invention relates to the arrangement of a rod antenna in a handheld radio telephone.

Unter Handfunktelefon sind nachfolgend sowohl Funksprechge räte in der Form eines Handapparates, eines sog. "Handy", als auch Handapparate schnurloser Telefone, die gleichartig aufgebaut sind, zu verstehen. Under mobile telephone handset are below both Funksprechge councils in the form of a handset, a so-called. "Handy", and handsets of cordless telephones that are similarly constructed to understand. Die Ausgangsleistungen von Handfunktelefonen betragen max. The output power of wireless hand-held phones amount to max. einige Watt, wobei oft digitale Modulation verwendet wird. often using digital modulation is used a few watts.

Derartige Stabantennen können auch als Teleskopantenne auf gebaut sein oder durch elektrische Mittel gegenüber einer λ/4-Antenne verkürzt sein. Such whip antennas can also be constructed as a telescopic antenna shortened or by electrical means to a λ / 4 antenna.

Bei allen bekannten Handfunktelefonen befindet sich die Antenne auf oder an der Oberseite, dh oberhalb der Hörmuschel. In all the known hand-held radio phones, the antenna is located on or at the top, ie, above the earpiece. Der Abstand zwischen Antenne und Kopf beträgt deshalb nur wenige Zentimeter. The distance between the antenna and head is therefore only a few centimeters.

In vielen Veröffentlichungen, wie von M. Dohlus ua: "Berechnung elektromagnetischer Felder in komplexen Modellen des menschlichen Körpers", von H. Singer ua: "Berechnung der Feldeinkopplung eines Handfunksprechgerätes in den menschlichen Körper", Kleinheubacher Berichte, Band 37, 1994 und in "Schutz vor elektromagnetischer Strahlung beim Mobilfunk", Veröffentlichungen der Strahlenschutzkom mission Band 22, Gustav Fischer Verlag, Stuttgart - Jena - New York, 1992, wird darauf hingewiesen, daß die Aussendung von Hochfrequenz so dicht am Kopf zu gesundheitlichen Schä den des Benutzers führen kann. In many publications, as described by M. Dohlus include: "Calculation of electromagnetic fields in complex models of the human body", by H. Singer, among others: "Measuring field coupling of a hand radio in the human body," Kleinheubacher reports, Volume 37, 1994 and in "protection against electromagnetic radiation in mobile communications," Publications of the Strahlenschutzkom mission Volume 22, Gustav Fischer Verlag, Stuttgart - Jena - New York, 1992, pointed out that the transmission of high frequency can be as tight lead at the top to health Schä the user ,

Besonders gefährdet ist das Auge als sehr empfindliches Organ. Particularly at risk the eye is a very sensitive organ. Im Nahbereich der Sendeantenne des Handfunktelefons treten sehr inhomogene lokale Energieabsorptionen auf, die im wesentlichen abhängen von der Ausgangsleistung, der Frequenz, der Betriebsart, dem Antennentyp sowie dem Abstand und der Position der Antenne, bezogen auf den Kopf. In the vicinity of the transmitting antenna of the handheld radio telephone very inhomogeneous local energy absorptions occur which depend essentially on the output power, the frequency, the mode, the antenna type and distance and the position of the antenna relative to the head.

Die Betriebsart der Geräte ist systembedingt vorgegeben. The operating mode of the equipment is system-related predefined. Die speziellen Expositionsbedingungen können daher in erster Linie durch den Antennentyp und die Positionierung der Antennen am Handfunktelefon beeinflußt werden. The specific exposure conditions can therefore be influenced primarily by the antenna type and the positioning of the antennas at the mobile telephone handset. Es sind beispielsweise im ITG-Fachbericht 128, Dresden 1994, auf den Seiten 315 bis 320 von Hombach ua über den Einfluß der Antennenform eines Handfunkgerätes auf das Antennen diagramm und die Exposition des Nutzers, und auf den Seiten 321 bis 324 von Heberlin ua über die Theoretische und experimentelle Charakterisierung einer Antenne für ein digitales Handfunktelefon Berichte veröffentlicht. There are, for example, in ITG-Fachbericht 128, Dresden, 1994, on pages 315-320 of Hombach, inter alia, on the influence of the antenna the shape of a hand-held radio unit to the antenna diagram and the exposure of the user, and on pages 321 to 324 of Heberlin inter alia, the theoretical and experimental characterization of an antenna for a digital mobile telephone reports published.

Einige Hersteller ordnen daher die Antenne seitlich an der Oberseite an, um den Abstand zum Kopf auf etwa 2 bis 3 cm zu vergrößern. Some manufacturers therefore arrange the antenna side at the top to to to about 2 to 3 cm to increase the distance to the head. Eine weitere Abstandsvergrößerung um weitere 2 bis 3 cm tritt ein, wenn Hörer und Mikrofon an einer und die Antenne an der anderen Schmalseite des Handfunktelefons angeordnet sind. A further increase in distance by a further 2 to 3 cm occurs when earpiece and microphone at one and the antenna are disposed on the other narrow side of the hand-held radiotelephone. Diese Abstände sind jedoch nur dann vor handen, wenn das Handfunktelefon "korrekt" gehalten wird. However, these distances are only given handen when the mobile telephone is held "correct." Eine Berührung des Kopfes durch die Antenne kann im prak tischen Betrieb nicht ausgeschlossen werden. A contact of the head by the antenna can not be excluded in the spectrum of practical operation. Auch schräge Anordnung und Richtwirkungen wurden deshalb bereits vorgeschlagen. Even oblique arrangement and directional effects have therefore been proposed.

Aufgabe der Erfindung ist die wesentliche Verringerung der gesundheitsschädigenden Belastung des Kopfes mit elektro magnetischen Wellen bei nur geringer Beeinträchtigung der Ausbreitungsbedingungen. The object of the invention is the substantial reduction of the harmful exposure of the head with electromagnetic waves with only slight impairment of the propagation conditions.

Zur Lösung dieser Aufgabe wird vorgeschlagen, die Antenne an der Unterseite des Handfunktelefons anzuordnen. To achieve this object it is proposed to arrange the antenna at the bottom of the hand-held radiotelephone.

Die Erfindung wird nachstehend an einem Ausführungsbeispiel näher erläutert. The invention is explained in more detail below using an exemplary embodiment. In der zugehörigen Zeichnung zeigen die In the accompanying drawings show the

Fig. 1 eine übliche bekannte Anordnung, die Fig. 1 is a typical prior art arrangement, the

Fig. 2 eine verbesserte bekannte Anordnung und die Fig. 2 shows a known arrangement, and the improved

Fig. 3 eine Anordnung nach der Erfindung. Fig. 3 shows an arrangement according to the invention.

Der Abstand zum Kopf und insbesondere zum Auge wird durch die Anordnung unterhalb des Mikrofons erheblich vergrößert, so daß gesundheitliche Beeinträchtigungen im Vergleich zum bekannten Stand der Technik wesentlich verringert werden. The distance to the head and in particular to the eye is significantly increased by the arrangement below the microphone, so that adverse health effects compared to the known prior art are substantially reduced. Geringfügige Verringerungen der Reichweite durch eventuelle Körperabschattungen spielen nur eine untergeordnete Rolle. Slight reductions in coverage by possible Körperabschattungen play only a minor role.

Es ist zwar bekannt, sog. drahtlose Mikrofone mit abwärts weisenden Antennen zu versehen, doch ist diese Anordnung nicht wegen der Belastung des menschlichen Körpers durch elektromagnetische Wellen gewählt worden. Although it is known, so-called. To provide wireless microphones with downwardly facing antennas, but this arrangement has not been selected by electromagnetic waves because of the load of the human body.

Das drahtlose Mikrofon enthält keinen Hörer und wird deshalb auch nicht in unmittelbarer Nähe des Kopfes betrieben. The wireless microphone does not contain a receiver and is therefore not used in the immediate vicinity of the head. Es läßt sich mit der, ursprünglich längeren, unten angebrachten Antenne besser handhaben. It can be better handled with the originally longer, bottom-mounted antenna. Außerdem würde eine nach oben reichende Antenne im Bild des Darstellers optisch stören. In addition, a reaching upwards antenna in the image of the performer would interfere optically.

Beim zweckmäßigen Gebrauch des bekannten Handfunktelefons nach Fig. 1 oder 2 liegt der Hörer immer dicht am Kopf an, wo eine enge Kopplung einer dort angebrachten Antenne mit dem Kopf wie mit einem Absorber für elektromagnetische Wellen unvermeidbar ist. When the intended purpose of the known hand-held radio telephone according to Fig. 1 or 2 of the handset is always close to the head, where a tight coupling of an attached antenna there is unavoidable with the head as a electromagnetic wave absorber.

Wesentlicher Effekt der Erfindung ist, daß bei gleicher Gebrauchsweise entsprechend der Fig. 3 die Antenne in den freien Raum vor dem Hals weist, wo die Kopplung mit absor bierenden Organen und die Gesundheitsgefährdung bei den üb licherweise verwendeten Hochfrequenzleistungen vergleichs weise gering ist. The essential effect of the invention that with the same manner of use, the antenna into free space in front of the neck according to Fig. 3, where the coupling with sublingually beer organs and health hazard in the üb SHORT- used high frequency powers as comparatively low.

Claims (1)

  1. Anordnung einer Stabantenne an einem Handfunktelefon, dadurch gekennzeichnet, daß die Antenne mikrofonseitig abwärtsweisend angebracht ist. Arrangement of a rod antenna in a handheld radio telephone, characterized in that the antenna is mounted microphone side facing downwards.
DE1995126638 1995-07-21 1995-07-21 Mobile telephone rod-aerial system Withdrawn DE19526638A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995126638 DE19526638A1 (en) 1995-07-21 1995-07-21 Mobile telephone rod-aerial system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995126638 DE19526638A1 (en) 1995-07-21 1995-07-21 Mobile telephone rod-aerial system

Publications (1)

Publication Number Publication Date
DE19526638A1 true true DE19526638A1 (en) 1997-01-23

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ID=7767412

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995126638 Withdrawn DE19526638A1 (en) 1995-07-21 1995-07-21 Mobile telephone rod-aerial system

Country Status (1)

Country Link
DE (1) DE19526638A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701839A1 (en) * 1997-01-21 1998-07-23 Christoph Sonntag Radiation exposure reduction arrangement for mobile telephone

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508567A2 (en) * 1991-02-12 1992-10-14 AT&T WIRELESS COMMUNICATIONS PRODUCTS LTD. Improvements in and relating to antennae for a portable telephone equipment
DE4221121C1 (en) * 1992-06-26 1993-10-21 Siemens Ag Hand-held mobile communications radio - uses electric motor for automatic alignment of antenna with reception station to maintain transmission strength
DE9400948U1 (en) * 1994-01-20 1994-03-10 Frey Elmar mobile phone
DE9404083U1 (en) * 1993-03-24 1994-05-19 Peiker Andreas operating with radio transmission telephone handset
WO1994025999A1 (en) * 1993-05-03 1994-11-10 Motorola Inc. Antenna for an electronic apparatus
US5404390A (en) * 1992-12-18 1995-04-04 Nec Corporation Portable telephone set
DE4422644A1 (en) * 1993-11-09 1995-05-11 Kern Ralf M Mobile telephone
EP0661825A1 (en) * 1993-12-28 1995-07-05 Nec Corporation Portable radio apparatus with rotating antenna
DE4407426A1 (en) * 1994-03-05 1995-09-07 Philips Patentverwaltung Hand-held radio set with special antenna arrangement

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508567A2 (en) * 1991-02-12 1992-10-14 AT&T WIRELESS COMMUNICATIONS PRODUCTS LTD. Improvements in and relating to antennae for a portable telephone equipment
DE4221121C1 (en) * 1992-06-26 1993-10-21 Siemens Ag Hand-held mobile communications radio - uses electric motor for automatic alignment of antenna with reception station to maintain transmission strength
US5404390A (en) * 1992-12-18 1995-04-04 Nec Corporation Portable telephone set
DE9404083U1 (en) * 1993-03-24 1994-05-19 Peiker Andreas operating with radio transmission telephone handset
WO1994025999A1 (en) * 1993-05-03 1994-11-10 Motorola Inc. Antenna for an electronic apparatus
DE4422644A1 (en) * 1993-11-09 1995-05-11 Kern Ralf M Mobile telephone
EP0661825A1 (en) * 1993-12-28 1995-07-05 Nec Corporation Portable radio apparatus with rotating antenna
DE9400948U1 (en) * 1994-01-20 1994-03-10 Frey Elmar mobile phone
DE4407426A1 (en) * 1994-03-05 1995-09-07 Philips Patentverwaltung Hand-held radio set with special antenna arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701839A1 (en) * 1997-01-21 1998-07-23 Christoph Sonntag Radiation exposure reduction arrangement for mobile telephone

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee