EP0603081A1 - Tragbares Funktelefon mit einer Anordnung zum Schützen von Benützern gegen Strahlung - Google Patents

Tragbares Funktelefon mit einer Anordnung zum Schützen von Benützern gegen Strahlung Download PDF

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Publication number
EP0603081A1
EP0603081A1 EP93403087A EP93403087A EP0603081A1 EP 0603081 A1 EP0603081 A1 EP 0603081A1 EP 93403087 A EP93403087 A EP 93403087A EP 93403087 A EP93403087 A EP 93403087A EP 0603081 A1 EP0603081 A1 EP 0603081A1
Authority
EP
European Patent Office
Prior art keywords
transmitter
user
radiation
screen
radiating system
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Withdrawn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
EP93403087A
Other languages
English (en)
French (fr)
Inventor
Christophe Grangeat
Francois Moisson-Franckhauser
Michel Maignan
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.)
Alcatel Lucent NV
Original Assignee
Alcatel NV
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 Alcatel NV filed Critical Alcatel NV
Publication of EP0603081A1 publication Critical patent/EP0603081A1/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Withdrawn legal-status Critical Current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
    • H01Q1/245—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 means for shaping the antenna pattern, e.g. in order to protect user against rf exposure

Definitions

  • the present invention relates to portable or portable radio transmitters and more particularly to radiotelephones.
  • radiotelephones The range of these radiotelephones is limited in particular by the power that they can radiate. This is why it has been envisaged to give this power relatively high values. These values are such that a potentially harmful physiological effect could be caused in the body of a user who would absorb a large fraction of radiofrequency radiation having such a power. Various provisions have been proposed to limit this fraction in order to protect the user.
  • Patent Abstracts of Japan, vol. 8, N) 206 (E-267) 1643, September 20, 1984, JP-A-59 92 629 (HITACHI SEISAKUSHO) and EP-A-508 299 (SIEMENS AKTIENGESELLSCHAFT) provide for an enhancement of the radiating part of the antenna 'a radiotelephone, this in order to move this radiating part away from the head of the user. Such an increase increases the total height of the device and / or complicates its mechanical structure.
  • This figure represents a view of both a radiotelephone produced according to this invention and of a user of this radiotelephone.
  • this radiotelephone is shown at 4 in a typical service position relative to user 2.
  • this transmitter further comprises a screen 6 having an inner face 6A and an outer face 6B.
  • the arrangement of this screen is such that it is interposed between at least one high-emission zone of the radiating system 16 and the part of the body to be protected 8 and that it then has its inner and outer faces facing this high emission zone and this part of the body, respectively.
  • This screen comprises an absorbent structure 6C capable of converting into heat a majority of the energy of an electromagnetic radiation which passes through it and which has said emission frequency.
  • This structure can include a stack of differentiated layers whose electrical permittivity ⁇ , magnetic permeability ⁇ and electrical resistivity ⁇ are chosen to ensure optimal absorption of the emitted radiation.
  • a structure of this kind is known under the brand ECCOSORB SF from the Belgian firm GRACE N.V.
  • the screen 6 further comprises an electrically good conductive layer 6D on the side of its outer face 6B, the absorbent structure 6C being located on the side of its inner face 6A.
  • Layer 6D is a flat or curved metal sheet.
  • This transmitter further comprises a distance maintaining means 18 capable of maintaining a safety distance between the radiating system 16 and the body of the user 2.
  • This distance maintaining means is advantageously constituted by a cover 18. It maintains non only a safety distance such as 33 between the radiating system 16 and the body of the user when the transmitter 4 is in its operating position but also a safety distance such as 34 and 35, when, for example inadvertently, this transmitter 4 is placed out of its operating position in contact with this body. It also maintains such a distance 34 or 35 between the radiating system 16 and the body of other people who come into contact with the transmitter this, in cooperation with the other elements of the transmitter, in an omnidirectional manner.
  • These safety distances are typically between 5 and 10 mm if the average power of the transmitter is close to 0.5 watts. They seem more generally to be between 3 and 100 mm.
  • the distance maintaining means when the distance maintaining means is constituted by a cover 18, it surrounds the radiating system 16 and can also advantageously contain the screen 6. It has, with respect to said radiation, an absorption efficiency at least reduced compared to the absorption efficiency of the screen 6 and preferably substantially zero so as not to unnecessarily weaken the radiation emitted when the transmitter is in its operating position.
  • the modulation system comprises a control panel 12 for controlling the emission of a radiation constituting a switching signal capable of establishing a radio link between this transmitter 4 and a correspondent 22 selected by this switching signal. It also includes a microphone 14 for modulating radiation 20 constituting a transmission signal and carrying information to this correspondent.
  • the service position shown of such a radiotelephone places the microphone 14 and the speaker 30 within reach of the mouth 32 and an ear 36 of the user 2, respectively.
  • the user's head 8 then constitutes the part of his body to be protected.
  • Another service position can place the radiotelephone in a pocket or hung on the user's belt.
  • the transmission frequency is between 100 MHz and 100 GHz.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
  • Telephone Set Structure (AREA)
EP93403087A 1992-12-17 1993-12-17 Tragbares Funktelefon mit einer Anordnung zum Schützen von Benützern gegen Strahlung Withdrawn EP0603081A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9215267A FR2699773A1 (fr) 1992-12-17 1992-12-17 Emetteur radio portable.
FR9215267 1992-12-17

Publications (1)

Publication Number Publication Date
EP0603081A1 true EP0603081A1 (de) 1994-06-22

Family

ID=9436745

Family Applications (2)

Application Number Title Priority Date Filing Date
EP93403087A Withdrawn EP0603081A1 (de) 1992-12-17 1993-12-17 Tragbares Funktelefon mit einer Anordnung zum Schützen von Benützern gegen Strahlung
EP93403088A Expired - Lifetime EP0603082B1 (de) 1992-12-17 1993-12-17 Tragbares Funktelefon mit einer Anordnung zum Schützen von Benützern gegen Strahlung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP93403088A Expired - Lifetime EP0603082B1 (de) 1992-12-17 1993-12-17 Tragbares Funktelefon mit einer Anordnung zum Schützen von Benützern gegen Strahlung

Country Status (4)

Country Link
US (1) US5493704A (de)
EP (2) EP0603081A1 (de)
DE (1) DE69328283T2 (de)
FR (1) FR2699773A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997033340A1 (en) * 1996-03-04 1997-09-12 Moteco Ab A device for reducing the output of an antenna
US5854970A (en) * 1996-10-08 1998-12-29 Nokia Mobile Phones Limited Accessory RF unit for hand-held wireless telephone systems
DE19815322A1 (de) * 1998-04-06 1999-10-07 Kreitmair Steck Wolfgang Reflektorantenne für analoge und digitale mobile Telefone (GSM, DECT, UMTS etc.)
WO2000049678A1 (fr) * 1999-02-19 2000-08-24 Jury Alexeevich Gromakov Radiotelephone comportant une protection pour l'utilisateur contre les rayonnements electromagnetiques, et variantes
DE10134848C1 (de) * 2001-07-17 2002-12-12 Siemens Ag Mobilfunkgerät mit reduziertem SAR-Wert
WO2003034537A1 (de) * 2001-10-10 2003-04-24 Siemens Aktiengesellschaft Mobilfunkgerät mit einem den sar-wert reduzierenden korrekturelement

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1892895A (en) * 1994-03-08 1995-09-25 Hagenuk Telecom Gmbh Hand-held transmitting and/or receiving apparatus
DE9410296U1 (de) * 1994-06-24 1995-07-20 Siemens AG, 80333 München Handfunkgerät
KR960043337A (ko) * 1995-05-24 1996-12-23 김광호 반사판이 부착된 휴대용 무선기기 안테나
GB2302474B (en) * 1995-10-27 1997-06-11 Leslie Ronald Wilson Improvements in or relating to a shielding device
SE508365C2 (sv) 1996-11-04 1998-09-28 Ericsson Telefon Ab L M Radiotelefon med hög antenneffektivitet
JPH1131909A (ja) * 1997-05-14 1999-02-02 Murata Mfg Co Ltd 移動体通信機
US6314275B1 (en) * 1997-08-19 2001-11-06 Telit Mobile Terminals, S.P.A. Hand-held transmitting and/or receiving apparatus
GB2330979A (en) * 1997-10-28 1999-05-05 Radio Design Limited A radiation shield for a mobile telephone
JPH11234162A (ja) * 1998-02-09 1999-08-27 Nec Corp 携帯型通信装置
GB2359195A (en) * 2000-02-14 2001-08-15 Orange Personal Comm Serv Ltd Mounting a shielded antenna unit inside a building
GB2363003B (en) * 2000-03-11 2004-10-13 Alan Abraham Deal Anti-radiation shields
FR2809274B1 (fr) * 2000-05-17 2002-10-11 Sagem Telephone mobile perfectionne et procede de parametrage du telephone
JP2002026627A (ja) * 2000-07-05 2002-01-25 Sony Corp アンテナ装置及び携帯型無線端末
FI20002123A (fi) * 2000-09-27 2002-03-28 Nokia Mobile Phones Ltd Matkaviestimen antennijärjestely
JP4106866B2 (ja) * 2000-12-12 2008-06-25 日本電気株式会社 携帯電話機及び携帯電話機のデータ通信制御方法
JP3642029B2 (ja) * 2001-02-06 2005-04-27 日本電気株式会社 携帯電話機
US20040198264A1 (en) * 2002-08-22 2004-10-07 Ben Saur Telephone radiation shielding devices
US7205953B2 (en) * 2003-09-12 2007-04-17 Symbol Technologies, Inc. Directional antenna array
US7423606B2 (en) * 2004-09-30 2008-09-09 Symbol Technologies, Inc. Multi-frequency RFID apparatus and methods of reading RFID tags
US7554496B2 (en) 2007-04-10 2009-06-30 Research In Motion Limited Mobile wireless communications device including a ground patch providing specific absorption rate (SAR) reduction and related methods
EP1981119B1 (de) * 2007-04-10 2019-12-18 BlackBerry Limited Mobile drahtlose Kommunikationsvorrichtung mit Erdungs-Patch zur Reduzierung der spezifischen Absoprtionsrate und damit zusammenhängende Verfahren
US8150484B2 (en) * 2007-09-11 2012-04-03 Nokia Corporation Protective housings for wireless transmission apparatus and associated methods

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5992629A (ja) * 1982-11-19 1984-05-28 Hitachi Ltd 携帯無線電話装置
EP0203709A1 (de) * 1985-04-26 1986-12-03 BRITISH TELECOMMUNICATIONS public limited company Mikrowellensignaldämpfung
EP0346125A2 (de) * 1988-06-08 1989-12-13 Nec Corporation Integrierte Mikrowellenvorrichtung für einen Rundfunksatellitenempfänger
US4980694A (en) * 1989-04-14 1990-12-25 Goldstar Products Company, Limited Portable communication apparatus with folded-slot edge-congruent antenna
JPH04220851A (ja) * 1990-12-21 1992-08-11 Mitsubishi Electric Corp コードレス電話装置
EP0508299A1 (de) * 1991-04-10 1992-10-14 Siemens Aktiengesellschaft Funksprechgerät mit zugehöriger Geräteantenne

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740794A (en) * 1986-01-03 1988-04-26 Motorola, Inc. Connectorless antenna coupler
JPH0254630A (ja) * 1988-08-19 1990-02-23 Nippon Telegr & Teleph Corp <Ntt> 携帯無線機
US5335366A (en) * 1993-02-01 1994-08-02 Daniels John J Radiation shielding apparatus for a radio transmitting device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5992629A (ja) * 1982-11-19 1984-05-28 Hitachi Ltd 携帯無線電話装置
EP0203709A1 (de) * 1985-04-26 1986-12-03 BRITISH TELECOMMUNICATIONS public limited company Mikrowellensignaldämpfung
EP0346125A2 (de) * 1988-06-08 1989-12-13 Nec Corporation Integrierte Mikrowellenvorrichtung für einen Rundfunksatellitenempfänger
US4980694A (en) * 1989-04-14 1990-12-25 Goldstar Products Company, Limited Portable communication apparatus with folded-slot edge-congruent antenna
JPH04220851A (ja) * 1990-12-21 1992-08-11 Mitsubishi Electric Corp コードレス電話装置
EP0508299A1 (de) * 1991-04-10 1992-10-14 Siemens Aktiengesellschaft Funksprechgerät mit zugehöriger Geräteantenne

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 16, no. 570 (E - 1297) 10 December 1992 (1992-12-10) *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 206 (E - 267)<1643> 20 September 1984 (1984-09-20) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997033340A1 (en) * 1996-03-04 1997-09-12 Moteco Ab A device for reducing the output of an antenna
US5854970A (en) * 1996-10-08 1998-12-29 Nokia Mobile Phones Limited Accessory RF unit for hand-held wireless telephone systems
DE19815322A1 (de) * 1998-04-06 1999-10-07 Kreitmair Steck Wolfgang Reflektorantenne für analoge und digitale mobile Telefone (GSM, DECT, UMTS etc.)
WO2000049678A1 (fr) * 1999-02-19 2000-08-24 Jury Alexeevich Gromakov Radiotelephone comportant une protection pour l'utilisateur contre les rayonnements electromagnetiques, et variantes
DE10134848C1 (de) * 2001-07-17 2002-12-12 Siemens Ag Mobilfunkgerät mit reduziertem SAR-Wert
WO2003034537A1 (de) * 2001-10-10 2003-04-24 Siemens Aktiengesellschaft Mobilfunkgerät mit einem den sar-wert reduzierenden korrekturelement
DE10149941A1 (de) * 2001-10-10 2003-04-30 Siemens Ag Mobilfunkgerät mit einem den SAR-Wert reduzierenden Korrekturelement

Also Published As

Publication number Publication date
US5493704A (en) 1996-02-20
EP0603082B1 (de) 2000-04-05
DE69328283D1 (de) 2000-05-11
FR2699773A1 (fr) 1994-06-24
DE69328283T2 (de) 2000-11-30
EP0603082A1 (de) 1994-06-22

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