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WO1997036380A1 - Blindage pour un equipement radio - Google Patents

Blindage pour un equipement radio Download PDF

Info

Publication number
WO1997036380A1
WO1997036380A1 PCT/GB1997/000853 GB9700853W WO9736380A1 WO 1997036380 A1 WO1997036380 A1 WO 1997036380A1 GB 9700853 W GB9700853 W GB 9700853W WO 9736380 A1 WO9736380 A1 WO 9736380A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiation
shielding
radiation shielding
layer
absorptive
Prior art date
Application number
PCT/GB1997/000853
Other languages
English (en)
Inventor
Charles Robert Newport
Original Assignee
Euroconcept 2000 Limited
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
Priority claimed from GBGB9606321.9A external-priority patent/GB9606321D0/en
Priority claimed from GBGB9617117.8A external-priority patent/GB9617117D0/en
Application filed by Euroconcept 2000 Limited filed Critical Euroconcept 2000 Limited
Priority to AU21695/97A priority Critical patent/AU2169597A/en
Publication of WO1997036380A1 publication Critical patent/WO1997036380A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/38—Transceivers, 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
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/526—Electromagnetic shields

Definitions

  • the invention has arisen m relation to shielding high-frequency, typically micro-wave, radio equipment such as mobile telephone handsets.
  • Elements of our re-evaluation include appreciating that, in use, an external antenna of a mobile telephone handset is actually more remote from the user's head than the handset body as such; that the previously proposed external antennae shielding so reduces radiated signals as to detract unsatisfactorily from design criteria for operation of such handsets; that fully effective internal shielding is not as readily retro-fitted as some prior proposals appear to assert or assume; and that, in use, additional housing boxes, cases or pouches inevitably so increase bulk and reduce ease of operation of handsets as to counter basic structural and ergonomic design criteria, particularly as to lightness and compactness.
  • radiation shielding for such as mobile telephone handsets is limited to externally affixed laminated shielding material having an inner layer of radiation-absorptive nature and apertured in register with operating keys, buttons, pads, membrane, etc; and a layer of radiation-reflective material that extends over the inner layer and its aperturing but allows required operation by touch over said aperturing.
  • the inner radiation-absorptive layer will be thicker and/or less flexible/deformable than the radiation- reflective layer and/or opaque, hence its aperturing, which can extend to registration with d ⁇ splay(s) of the handset; and the radiation-reflective layer is preferably transparent, thus allowing sight of original marking (s) of operating keys etc. markings and/or display(s) .
  • an opaque radiation-reflective layer could be used if itself marked over said aperturing of the radiation- absorptive layer and operating keys etc. of the handset, whether with or without additional transparent material at w ⁇ ndow(s) registering with d ⁇ splay(s) . This latter possibility might appeal most to a handset manufacturer, perhaps preferably feasibly with appropriate radiation- absorptivity provision incorporated directly into the handset casing as such.
  • radiation shielding for such as a mobile telephone handset comprises radiation-reflective material that is applied over radiation-absorptive material, including over operating keys, buttons, pads, membrane, etc. and whether or not the absorptive material is additional to or incorporated in equipment casing provision.
  • the radiation-reflective layer may itself be of laminated form, for example an actually reflective inner or under layer and an outer covering or wear layer as may be desired or required.
  • Suitable radiation-reflective materials include flexible polymer plastics films with reflective properties for the radiation concerned, conveniently by way of thin metallic coating that need not obstruct optical transparency where that s desired or required, and can readily present desirable heat and electrical conductivity, advantageously as an area resistance in the range about 10 to 30 ohm/square.
  • Indium tin oxide is a preferred reflective coating satisfying such requirement at reasonable cost with particularly operationally satisfactory and aesthetically pleasing results, including as compared with alternatives such as silver or gold.
  • Suitable processes/techniques for metallising include physical vapour deposition (PVD) of evaporative or sputtering type and fit-net spraying of a liquid carrier medium.
  • PVD physical vapour deposition
  • Reflective coating of whatever effective nature, can be to one side only of the film, conveniently and advantageously its inner or under surface, typically after application thereto of colouration and/or graphics and/or printing to be visible through transparent said film; though such could use marking materials, such as mk(s) etc. that have relevantly reflective ingredients, normally metal (s), or even simply be transparent to radiation concerned, thus applicable over metallising if desired.
  • the outer surface is preferably suitably surface-treated or textured, typically coated or UV treated, so as to improve its appearance and/or tactile properties, e.g. to be less shiny and/or slippery to touch.
  • the flexible plastics film be as thm as will be serviceable, including regarding localised deformation (s) as required to operate keys etc. see further later regarding, but not to be taken as limited to retrofitting to existing models of mobile telephone hand ⁇ sets.
  • Suitable transparent plastics film includes readily available bi-axially oriented polyester, typically of about 150 microns thickness and tensile strength/elasticity consistent with an initial tear factor of about 60% to about 165%.
  • Other feasible plastics film materials include polyvinylchlo ⁇ de (PVC) .
  • Suitable radiation-absorptive materials include a host of polymerised synthetic resm (plastics), such as PVC, with various inclusions contributing to energy conversion and effective absorption of electro-magnetic radiation concerned, i.e. at frequencies of interest.
  • Inclusions include such as metals, metal oxides, femtes; carbon (say some form of graphite), boron, silicon, mica, ceramics; and rare earth elements, generally m particulate or powdrous, fibrous (usually chopped) or flake form combining to meet design requirements for absorption, typically including as to electrical conductivity in similar range to that above for metallisation of the reflective layer assuring desired radiation insertion loss preferably of the order of at least 45 decibels, relative to frequencies of radiation concerned.
  • absorptive materials are readily procurable from various specialists in the field, typically with a predominance of carbon m various particulate and/or fibrous and/or flake forms, perhaps preferably all such forms.
  • Energy conversion effects concerned include direct absorption generating heat, phase-shifting say to produce useful degrees of cancellation of incident radiation, at least localised generation of electric current flow(s) dissipating into the host material as heat if not taken off to ground.
  • a foamed or expanded plastics host material can be advantageous, typically of closed cell form with its cell s ⁇ ze(s) generally greater than about 0.001mm and less than about 0.01mm, or of open cell form with its pore s ⁇ ze(s) generally between about 0.01mm and about 0.1mm.
  • Typical thickness of a layer of the radiation absorptive material, i.e. the host material is from about 0.65mm to about 1.7mm, giving satisfactory bulk without undue mass.
  • Typical sizes for inclusions range from about 45 microns to about 150 microns for particles; of the order of 0.007mm, say about 0.005mm to about 0.010mm diameter and about 0.5mm to about 1mm length for chopped fibres; and of the order of 0.0025 micron, say about 0.0015 micron to about 0.004 micron, for flake, such as of colloidal graphite.
  • Absorptive layer material is of relatively high cost, and many mobile telephone hand-sets have main radiating components localised so that, strictly speaking, less than full coverage is required for its surface concerned by such absorptive layer, though can still benefit from coverage by the reflective layer, which m any event, is desirably substantially continuous over the whole of such surface.
  • the area that need not be so covered is m/about the region of the keys to be operated through the reflective layer, typically at aforesaid hollow stud-like deformations usually inwardly formed.
  • preferred embodiments hereof can have other than absorptive material underlying the reflective material at such areas, preferably of a resilient or cushioning nature and/or equivalent to the absorptive layer in such respects.
  • this other material can be of substantially matching thickness to that of the absorptive layer or at least conforming reasonably therewith but perhaps different for other reasons, such as generally minimising or optimising materials usage and/or consistency with requirements arising from protrusion of the operating keys and/or preferred deformation of the reflective layer related to operating the keys. In the latter case, or for use about display areas, this other material layer would, of course, be suitably apertured.
  • Most telephone hand-set surfaces concerned have convexity, at least at and adjacent corners made with sides, and use of these other materials can be highly advantageous in accommodating thereto, particularly as to overall appearance and installed presentation of the reflective layer and any outer protective layer.
  • Suitable materials include solid adhesive sheet or foam, usually acrylic and of thickness between about 25 microns and about 65 microns.
  • Such spacers can be transparent, or opaque and suitably marked (unless overlying reflective layer is marked) , say particular preferably die-cut from absorption layer material. It will be appreciated that integration of teaching hereof into actual manufacture of such as mobile telephone handsets extends naturally beyond adding a full lamination of absorptive and reflective layers, particularly to at least some of absorptive inclusions being made to at least the front of the casing as normally being a moulded article and then perhaps only requiring adding on of a reflective layer substantially as taught herein.
  • FIG. 1 and IA, B C show an outline sectional view as installed and outline plan views of absorptive, reflective and protective layers, respectively;
  • Figures 2A and B show plan views of wholly or partially absorptive and reflective layers having matching cut-outs and localised deformations individually for each key, respectively;
  • Figures 3A and B show similar views for variant cut ⁇ outs and localised deformations related to groups of keys;
  • Figures 4 is a scrap outline sectional view showing individual key spacers/inserts; and
  • Figures 5A and B show outline plan and exploded side views, respectively, for an opened flip cover type of mobile telephone hand-set.
  • a mobile telephone hand-set 10 has surface 10F for operating keys and display (neither shown) covering by multi-layer absorptive and reflective radiation shielding 11 embodying this invention.
  • the shielding 11 comprises radiation absorptive layer 13 next to the hand-set surface 10F and having apertures or cut-outs 13K and 13D m register with operating keys and display, respectively, of the hand-set 10; radiation reflective layer 15 next to the absorptive layer and shown carrying markings 15K in register with said operating key-related apertures or cut-outs 13K in the absorptive layer 13, to identify those keys, and with an aperture or cut-out 15D in register with said display- related aperture or cut out 13D; and outer protective transparent layer 17 shown continuous over the reflective layer 15.
  • the sectional view of Figure 1 is illustrative only, i.e.
  • the radiation absorptive layer 13 will be generally as discussed above, typically of sponge-like material with appropriate inclusions rendering it radiation absorptive, including appropriately electrically conductive.
  • the radiation reflective layer 15 will also be as generally discussed above, generally much thinner web or film typically metallised to render it radiation reflective, including appropriately electrically conductive.
  • the protective layer 17 may be thinner still, or even an appropriate coating for the reflective layer 15 for wear and/or contamination resistance. As will readily be appreciated, the reflective layer would not need to carry the markings 15K, nor have the cut ⁇ out 15D if it was transparent, including through its metallisation.
  • Assembly together of the absorptive and reflective layers 13 and 25 can be aided, perhaps particularly as to required or desired registration by one or more sets of cooperating formations, see, by way of example small aperture 13L in the absorptive layer 13 and indication at
  • the shielding may be a pre-laminated composite, preferably complete with an adhesive over part(s) if not all as is preferred of the available absorptive layer 13, say with a barrier or cover layer to be removed for fitting purposes.
  • Progressive application of some or all of the layers 13, 15 and 17 is not to be ruled out, even if less attractive and easy for user-application as a retro-fit product.
  • Adhesive between the protective layer 17 and the reflective layer 15 will, of course, be transparent, though that between the layers 13 and 15 need not be transparent unless the reflective layer 15 is transparent, nor need the adhesive on the other surface of the layer 13 be transparent.
  • a wide range of choice applies to adhesive, even as required or desired to be transparent, including acrylics.
  • Figures 2A, B show two-layer-only shielding, i.e. with the reflective layer 15 not needing any additional protective layer as discussed above, and as applies to illustration of all further embodiments.
  • radiation absorptive layer 23 has individual operating key and display-related apertures or cut-outs 23K and 23D, but also differences m that the absorptive layer is shown in two parts 23A, B and the radiation reflective layer 25 is transparent (thus needs no operating key-related markings) and further requires no additional protective.
  • Either of the two parts 23A, B may by omitted or replaced by non- absorptive layer material if radiation-producing components of the hand-set concerned are localised and concentrated at positions under the other part, as generally discussed above.
  • the layer 25 is shown (by shading) with deformations 25K and 25D out of its main generally flat planar form in registration with operating key- and display-related apertures or cut-outs 23K and 23D of the layer parts 23A, B.
  • the deformations 25K will be outwards and slightly but sufficiently larger for any thus- required accommodation of actual operating keys and their operation.
  • the deformation 25D may also be outwards, though it could (and perhaps even preferably) be inwards depending on thickness of the layer part 23A unless not present, and is shown in a greater outward deformation 25A representing matching to the layer part 23B being absent or of lesser thickness than the layer part 23A.
  • a modification of the layer part 23B say where the operating keys less spaced, could involve at least some of the apertures or cut-outs 23K being coalesced into row or column-like apertures or cut-outs, or even further into one or two more rectangle-like apertures or cut-outs. All of these differences and further differences as and when further noted are to be considered as individually applicable options, so far as makes sense.
  • FIG. 3A, B differs as to overall shapes of the layers and parts 33A, B and 35, and as to extensive coalescence aperturing 33K, and as to the deformations 35X, Y being larger to register with groups of the operating keys.
  • Figure 4 another variation is shown where part of apertures or cutouts 43K in the layer 43 (or layer part 43B) above operating keys 40K through associated hand ⁇ set wall 40 is occupied by spacers 49, usually of plastics material, say transparent to allow sight of the keys 40K, or opaque and marked corresponding to the keys (then feasibly of absorptive material) .
  • spacers 49 usually of plastics material, say transparent to allow sight of the keys 40K, or opaque and marked corresponding to the keys (then feasibly of absorptive material) .
  • This can improve immediacy of operation of the keys 40K through the reflective layer 45, which is shown unreformed over the keys 40K, though that is not necessarily so as combination of such deformation and
  • Figures 5A, B show application to hand-set 50 of so- called "flip" type shown with a much greater step between its display part 50A and its operating key part 50B to accommodate a hinged cover 50C for the latter, and ear ⁇ piece socket/microphone provisions 58E, M. Shielding hereof is indicated by way of two shielding parts 51A, B over the display and operating key parts 50A, B - see absorptive layer part 53A only, solid permanent adhesive layer 53B which will have apertures or keys at operating keys, underside metallised reflective layer parts 55A, B (shown plain and with key-related deformations, respectively), and semi-permanent adhesive at 54, 56 to each face of the absorptive layer 53A.
  • references with differing first digits represent similar or equivalent provision according to their second digits.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Laminated Bodies (AREA)

Abstract

Un combiné téléphonique (10) d'un poste mobile a une surface (10F) qui porte des touches de commande et un dispositif d'affichage, recouverts par un blindage multicouche (11), absorbant et réfléchissant les radiations. Le blindage (11) comprend : une couche (13) absorbant les radiations, jouxtant la surface (10F) du combiné et ayant des ouvertures correspondant aux touches de commande et à l'affichage; une couche (15) réfléchissant les radiations, jouxtant la couche absorbante (13); et une couche protectrice transparente externe (17), continue, recouvrant la couche réfléchissante (15).
PCT/GB1997/000853 1996-03-26 1997-03-26 Blindage pour un equipement radio WO1997036380A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU21695/97A AU2169597A (en) 1996-03-26 1997-03-26 Shielding radio equipment

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9606321.9A GB9606321D0 (en) 1996-03-26 1996-03-26 Microwave transmitter shield
GB9606321.9 1996-03-26
GBGB9617117.8A GB9617117D0 (en) 1996-08-15 1996-08-15 Shielding radio equipment
GB9617117.8 1996-08-15

Publications (1)

Publication Number Publication Date
WO1997036380A1 true WO1997036380A1 (fr) 1997-10-02

Family

ID=26308991

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/000853 WO1997036380A1 (fr) 1996-03-26 1997-03-26 Blindage pour un equipement radio

Country Status (2)

Country Link
AU (1) AU2169597A (fr)
WO (1) WO1997036380A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014972A1 (fr) * 1996-09-30 1998-04-09 Ericsson Inc. Ensemble clavier eclaire par l'arriere
WO1999065109A1 (fr) * 1998-06-09 1999-12-16 M.M.T. S.R.L. Dispositif de decharge d'un element absorbant le rayonnement electromagnetique produit par des organes electriques ou electroniques
EP0995232A1 (fr) * 1997-07-09 2000-04-26 Allgon AB Telephone portable dote d'un dispositif d'absorption des rayonnements
EP1098388A1 (fr) * 1999-11-03 2001-05-09 Magcom AS Appareil de communication radio portable comme téléphone mobile à écran de protection
EP1098389A1 (fr) * 1999-11-03 2001-05-09 Magcom AS Appareil de communication radio portable comme téléphone mobile à support de friction
GB2363003A (en) * 2000-03-11 2001-12-05 Alan Abraham Deal An anti-radiation shield
WO2003034537A1 (fr) * 2001-10-10 2003-04-24 Siemens Aktiengesellschaft Appareil radiotelephonique mobile comprenant un element de correction reduisant la valeur de das (debit d'absorption specifique)
EP1089606A3 (fr) * 1999-09-29 2003-08-20 Nokia Corporation Cadre d'affichage avec blindage de protection intégré contre les décharges electrostatiques ( ESD ) et construction d'un interface d'utilisateur
EP1220458A3 (fr) * 2000-12-27 2003-10-22 Sony Corporation Téléphone portable
EP1195843A3 (fr) * 2000-09-27 2003-11-05 Nokia Corporation Arrangement d'antenne dans une station mobile
DE10238967A1 (de) * 2002-06-04 2003-12-18 Curtis 1000 Europ Ag Mobiltelefon
WO2004015811A1 (fr) * 2002-08-09 2004-02-19 Giorgio Grasso Blindage pour telephones mobiles presentant un dispositif permettant de mesurer les rayonnements absorbes
WO2004075427A1 (fr) * 2003-02-18 2004-09-02 Carl, Heinz Telephones comportant une protection anti-rayonnement integree
WO2004100390A1 (fr) * 2003-05-09 2004-11-18 Koninklijke Philips Electronics N.V. Appareil pour le blindage d'un appareil de radiocommunications
EP1503448A1 (fr) * 2003-07-30 2005-02-02 Lg Electronics Inc. Blindage contre le rayonnement radioélectrique pour un radiotéléphone portatif
EP1526603A1 (fr) * 2003-10-23 2005-04-27 Ditta Egidio Broggi S.n.c. Ecran protéction pour minimiser le rayonnement de téléphone portable
WO2008067570A3 (fr) * 2006-12-01 2008-09-04 Nes No Elektro Smog Ag Dispositif de téléphone sans fil formant écran et procédé correspondant
EP1986267A1 (fr) * 2007-04-27 2008-10-29 Italdata Ingegneria Dell'Idea S.p.A. Dispositif électronique integré d'un système de positionnement
AT505941B1 (de) * 2007-12-03 2009-05-15 Franz Bergmueller Strahlenschutzeinrichtung für mobiltelefone
US8005519B2 (en) 2005-04-13 2011-08-23 Motorola Mobility, Inc. Capacitor assembly and communications device including the capacitor assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04220851A (ja) * 1990-12-21 1992-08-11 Mitsubishi Electric Corp コードレス電話装置
WO1994021054A1 (fr) * 1993-03-11 1994-09-15 Leslie Ronald Wilson Accessoire pour un dispositif de communication mobile
WO1995031048A1 (fr) * 1993-02-01 1995-11-16 Daniels John J Dispositif de blindage contre les rayonnements pour un dispositif de transmission radioelectrique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04220851A (ja) * 1990-12-21 1992-08-11 Mitsubishi Electric Corp コードレス電話装置
WO1995031048A1 (fr) * 1993-02-01 1995-11-16 Daniels John J Dispositif de blindage contre les rayonnements pour un dispositif de transmission radioelectrique
WO1994021054A1 (fr) * 1993-03-11 1994-09-15 Leslie Ronald Wilson Accessoire pour un dispositif de communication mobile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 570 (E - 1297) 10 December 1992 (1992-12-10) *

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014972A1 (fr) * 1996-09-30 1998-04-09 Ericsson Inc. Ensemble clavier eclaire par l'arriere
EP0995232A1 (fr) * 1997-07-09 2000-04-26 Allgon AB Telephone portable dote d'un dispositif d'absorption des rayonnements
WO1999065109A1 (fr) * 1998-06-09 1999-12-16 M.M.T. S.R.L. Dispositif de decharge d'un element absorbant le rayonnement electromagnetique produit par des organes electriques ou electroniques
US6728555B1 (en) 1999-09-29 2004-04-27 Nokia Mobile Phones, Ltd. Display frame with integrated ESD shield, and a user interface construction
EP1089606A3 (fr) * 1999-09-29 2003-08-20 Nokia Corporation Cadre d'affichage avec blindage de protection intégré contre les décharges electrostatiques ( ESD ) et construction d'un interface d'utilisateur
EP1098388A1 (fr) * 1999-11-03 2001-05-09 Magcom AS Appareil de communication radio portable comme téléphone mobile à écran de protection
EP1098389A1 (fr) * 1999-11-03 2001-05-09 Magcom AS Appareil de communication radio portable comme téléphone mobile à support de friction
GB2363003A (en) * 2000-03-11 2001-12-05 Alan Abraham Deal An anti-radiation shield
GB2363003B (en) * 2000-03-11 2004-10-13 Alan Abraham Deal Anti-radiation shields
EP1195843A3 (fr) * 2000-09-27 2003-11-05 Nokia Corporation Arrangement d'antenne dans une station mobile
US7054671B2 (en) 2000-09-27 2006-05-30 Nokia Mobile Phones, Ltd. Antenna arrangement in a mobile station
EP1220458A3 (fr) * 2000-12-27 2003-10-22 Sony Corporation Téléphone portable
US6785519B2 (en) 2000-12-27 2004-08-31 Sony Corporation Portable telephone
WO2003034537A1 (fr) * 2001-10-10 2003-04-24 Siemens Aktiengesellschaft Appareil radiotelephonique mobile comprenant un element de correction reduisant la valeur de das (debit d'absorption specifique)
DE10238967A1 (de) * 2002-06-04 2003-12-18 Curtis 1000 Europ Ag Mobiltelefon
WO2004015811A1 (fr) * 2002-08-09 2004-02-19 Giorgio Grasso Blindage pour telephones mobiles presentant un dispositif permettant de mesurer les rayonnements absorbes
WO2004075427A1 (fr) * 2003-02-18 2004-09-02 Carl, Heinz Telephones comportant une protection anti-rayonnement integree
WO2004100390A1 (fr) * 2003-05-09 2004-11-18 Koninklijke Philips Electronics N.V. Appareil pour le blindage d'un appareil de radiocommunications
EP1503448A1 (fr) * 2003-07-30 2005-02-02 Lg Electronics Inc. Blindage contre le rayonnement radioélectrique pour un radiotéléphone portatif
US7668575B2 (en) 2003-07-30 2010-02-23 Lg Electronics Inc. System and method for obtaining radiation characteristics of built-in antenna in mobile communication terminal
EP1526603A1 (fr) * 2003-10-23 2005-04-27 Ditta Egidio Broggi S.n.c. Ecran protéction pour minimiser le rayonnement de téléphone portable
US8005519B2 (en) 2005-04-13 2011-08-23 Motorola Mobility, Inc. Capacitor assembly and communications device including the capacitor assembly
WO2008067570A3 (fr) * 2006-12-01 2008-09-04 Nes No Elektro Smog Ag Dispositif de téléphone sans fil formant écran et procédé correspondant
EP1986267A1 (fr) * 2007-04-27 2008-10-29 Italdata Ingegneria Dell'Idea S.p.A. Dispositif électronique integré d'un système de positionnement
WO2008132144A1 (fr) * 2007-04-27 2008-11-06 Italdata Ingegneria Dell'idea S.P.A. Dispositif électronique, solidaire d'un système de positionnement
AT505941B1 (de) * 2007-12-03 2009-05-15 Franz Bergmueller Strahlenschutzeinrichtung für mobiltelefone

Also Published As

Publication number Publication date
AU2169597A (en) 1997-10-17

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