EP1368856A1 - Appareil de radiocommunication pourvu d'un element de correction reduisant la valeur du sar - Google Patents

Appareil de radiocommunication pourvu d'un element de correction reduisant la valeur du sar

Info

Publication number
EP1368856A1
EP1368856A1 EP02719649A EP02719649A EP1368856A1 EP 1368856 A1 EP1368856 A1 EP 1368856A1 EP 02719649 A EP02719649 A EP 02719649A EP 02719649 A EP02719649 A EP 02719649A EP 1368856 A1 EP1368856 A1 EP 1368856A1
Authority
EP
European Patent Office
Prior art keywords
radio communication
communication device
circuit board
printed circuit
correction element
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.)
Ceased
Application number
EP02719649A
Other languages
German (de)
English (en)
Inventor
Stefan Huber
Markus Larkamp
Ortwin Schrage
Michael Schreiber
Martin Weinberger
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.)
BenQ Corp
Original Assignee
Siemens 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
Priority claimed from DE10110982A external-priority patent/DE10110982A1/de
Priority claimed from DE2002106415 external-priority patent/DE10206415A1/de
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1368856A1 publication Critical patent/EP1368856A1/fr
Ceased legal-status Critical Current

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
    • H01Q1/245—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
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • 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
    • H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use

Definitions

  • tissue volume areas - such as preferably to be largely avoided in the sensitive head of the respective user when using the radio communication device according to the invention (such as, for example, a mobile radio or cordless telephone).
  • the radio communication device such as, for example, a mobile radio or cordless telephone.
  • organic tissue in the head of the respective user is at least more evenly and / or less thermally stressed.
  • the originally existing, local distribution of the electrical current flow on the printed circuit board is changed by the correction element according to the invention in such a way that the current level is made more uniform and / or the current level maximum or the current level maxima at least in one less critical Device area to be moved. Only in this way can the actual electromagnetic field distribution in the close range of the respective radio communication device be set in a more controlled manner, and thus the head, in particular the inside of the head, of the respective user can be reliably and reliably protected against local heating peaks.
  • the electromagnetic radiation which actually becomes effective on the body of the respective user can thus be controlled in an advantageous manner in such a way that impermissibly high local maxima of electromagnetic radiation or of currents flowing through it in the body tissue are reduced in a more organism-friendly manner and / or are displaced into a less critical device area can.
  • Show it: 1 shows a schematic illustration of a mobile radio device as the first exemplary embodiment of a radio communication device according to the invention with an additional correction element that reduces the SAR value
  • FIG. 2 shows a schematic representation of a diagram of the current distribution over the total cross section of the mobile radio device according to FIG. 1, with and without an additional SAR.
  • FIGS. 3 and 4 each show a schematic representation of the local current distribution on the printed circuit board of the mobile radio device according to FIG. 1 without and with the additional, SAR value-reducing correction element,
  • FIG. 5 shows a schematic illustration of the current flow field on the printed circuit board of the mobile radio device according to FIG. 1 without an additional correction element that reduces the SAR value
  • FIGS. 8 with 16, each in a schematic representation, different variants of SAR value-reducing correction elements
  • FIG. 17 shows a schematic representation of an expedient housing shape for a mobile radio device according to one of FIGS Lowering the head area of the respective user further,
  • FIGS. 18 shows a schematic representation of the respective mobile radio device according to one of FIGS.
  • FIG. 19 schematically, in a spatial representation, different main components of a mobile radio device in the disassembled state, which has at least one current-conducting intermediate layer as part of its keypad mat in order to reduce the SAR value, and
  • FIG. 20 shows a schematic representation of the various main components of the keyboard mat according to the invention for the mobile radio device according to FIG. 19.
  • Figure 1 shows a three-dimensional representation of a mobile radio device, in particular a mobile radio telephone or cordless telephone, as the first exemplary embodiment of a radio communication device MP1 according to the invention, which is shown broken down into three main components, specifically in the upper shell OS and the lower shell US of its housing GH, and in the printed circuit board LP housed therein.
  • the housing GH is thus formed in two parts in the present exemplary embodiment. It has an essentially flat, rectangular shape. Its extension in the longitudinal direction LE is preferably greater than its extension in the transverse direction QB, ie its broad side is selected.
  • PP cn p IQ O rt P 1 tr PO iQ tr ⁇ cn P cn Cfl P "rt H DJ.> P Hi cn P- PP PJ JPO 1 er P 1 N ⁇ P- P Hi ⁇ P 1 - - ' rt N rt ⁇ rt H cn P cn ⁇ ⁇ Pl P ⁇ tr ⁇ -in -J ⁇ cn ⁇ * P cn 3 OPPH P- J: see P • P- ⁇ cn s; DJ P- ⁇ -i PH cn ⁇
  • P PJ ⁇ ⁇ ⁇ P- ⁇ Hl H ⁇ P- ⁇ cn P ⁇ > 3 P 1 N rt cn D>: P o QO: P- P
  • P cn ⁇ P DJ ⁇ ⁇ H tr ⁇ ⁇ P 1-5 ⁇ P P- ⁇ ⁇ p L ⁇ cn H ⁇ 3 P PJ PJ V PJ ⁇ P ⁇ ⁇ ! d 3 rt P ⁇ P- P ⁇ tr tu ⁇ tr ⁇ ⁇ P cn C ⁇ P rt LP H H- ⁇ PP rt PL li OP J ⁇ ⁇ cn P- rt d P rt öd rt ⁇ ⁇ tr ⁇ ⁇ PH P- ⁇ rt rt rt LP P- P tx ⁇
  • P- P s ⁇ P- LP ⁇ p: tr PH ⁇ -i H rt PO ⁇ P 3 LP • H rt PPP 1 ⁇ p * d P- ⁇ ⁇ POH 21 ⁇ ⁇ 3 d P Cd Qa cn LP li P- ⁇ J-J ⁇ P cn ⁇ tu ⁇
  • a large number of precautionary measures are taken in practice in order to largely protect a user US when the mobile radio device MP1 in accordance with FIG. 18 is used as intended from potential health risks from the electromagnetic radiation energy emitted by the high-frequency module HB1 via the antenna AT.
  • Even if the total radiation exposure of the respective user is below the intended limit values through such measures, it remains open, however, in what way and with what local distribution possible secondary or residual radiation fields act on the organic tissue in the head area of the respective user.
  • SAR value specific absorption rate
  • SAR value is used in particular as a specific measurement criterion for which radiation exposure the respective user is actually exposed to (despite all precautionary measures).
  • the local thermal heating of individual tissue volume areas in the head of the user can be critical to the extent that field-absorbing shielding elements are often dimensioned and installed in an uncontrolled manner in mobile radio devices, so that electromagnetic energy is applied to local tissue volume areas in the head of the respective person through diffraction and / or resonance effects User can be focused in an undesirable manner or unwanted.
  • Such elements are then generally positioned in the housing facing the respective user in such a way that when using the respective mobile radio device they are closer to the head of the user than the antenna and can therefore have a greater impact on their influence on the electromagnetic radiation energy.
  • Such shielding elements in particular can lead to the unintended side effect of local heating of location P 1 P 1
  • P P DJ rf PJ P> P- tr P ⁇ DJ: td g ⁇ t I y o o P ⁇ 3 rt C ⁇ ⁇ P J DJ P rt ⁇ DJ P ⁇ ⁇
  • Cfl ⁇ C ⁇ PJ P- LQ P C ⁇ 00 ⁇ 21 ⁇ P 1 g ⁇ P- 3 P P- P J ⁇ P 3 LQ L ⁇ Cfl ⁇ P ⁇ ⁇ tr et et Td P P- ⁇ LQ 1 o et ⁇ P P- PT) P ⁇ ⁇ ! ⁇ LQ rt ⁇ P tr Hi ⁇ ⁇ J-- d P PJ: C ⁇ tr
  • the thermal heating of the tissue inside the head of the respective user can also be caused directly by the local power distribution EC1 on the main circuit board, since the respective mobile radio device MP1 is on the outside of the head of the respective user between their ear EA and cheek BA according to the figure 18 is applied so that electrical, capacitive and / or inductive contacting takes place and current can flow from the printed circuit board LP, if necessary, over the skin of the user and / or in his brain tissue.
  • At least one additional, Correction element reducing the SAR value is provided and designed in and / or on the housing such that the division of an electrical current possibly flowing on the printed circuit board is effected in a targeted manner from its one or more local maxima to the correction element.
  • the local distribution of the overall resulting electrical current on the printed circuit board and the additional element is considered to be uniform.
  • a less critical device area can be, for example, that of the respective mobile radio device that o co MM
  • P- P- p P ⁇ et 03 p- O: N ⁇ ⁇ tr iQ P ⁇ SV ⁇ ⁇ o ⁇ P 3 tr P P- P 1 rt 3 LQ P 01 [
  • flowing electrical current such as EC1 is probably causal for the thermal heating of organic tissue in the head area of the respective user.
  • Such an electrical current flows, in particular, on the printed circuit board LP along its longitudinal extension LE, if the transmitting / receiving antenna AT is designed as a ⁇ / 4 antenna and forms a radiation dipole together with the printed circuit board LP.
  • a current flow on the circuit board can also flow with other antenna types - but possibly with a different local distribution of maxima and minima.
  • an electrical current can flow on the printed circuit board in all cases in which the antenna is designed as an electrical opposite pole to the printed circuit board.
  • PIFA plane inverted F
  • the SAR value-reducing correction element is formed by an electrically conductive element KE1, which runs around the outer circumference of the upper housing shell OS in the edge zone along its four side edges on the outside of the upper shell OS. Its course is indicated by hatching. It covers both the edge zone area along the side edges of the rectangular upper side of the upper shell OS and the edge webs of the upper shell OS which are formed substantially perpendicular to the upper side of the upper shell OS in the direction of the lower shell US.
  • the correction element KE1 thus extends along a zone in the area of the four contiguous side edges of the upper shell OS, while the remaining areas of the upper and lower shell OS, US remain free.
  • the total edge width SB of this correction element KE1 is expediently chosen between 5 and 25% of the total cross-sectional width QB of the printed circuit board LP.
  • the electrically conductive element here is a single or multi-layer, electrically conductive film, coating or o c ⁇ tv> MP 1 P 1
  • P P rt P PJ P P P o ⁇ P- rt LQ K P, ⁇ P rt ⁇ P P P ⁇ P
  • P ⁇ P p- o DJ P 1 D>: P- ⁇ ⁇ LQ P tr X 03 DJ ⁇ P ⁇ PP p- PP rt LQ ⁇ P P-
  • ⁇ tr PJ tu p • -PP 1 3 Cd ⁇ et P P> P 1 PP 03 03 ⁇ P tr DJ P p- 3 P ⁇ P 1 X ⁇ X- SV DJ tr ⁇ > er ⁇ X- ⁇ d D> : rt et PXPP 3 PP ⁇ ⁇ o ⁇ ⁇ P rt P ⁇ ⁇ P- PP> ⁇ P 1 ⁇ -q PP J P "tr ⁇ o P ⁇ iX P ⁇ ⁇ PP P- P er P-
  • Cross bar ST is connected to the printed circuit board LP, which in the operating state of the printed circuit board LP projects upward from the top plane OS by approximately 90 ° relative to the plane of the board LP.
  • the correction element KE1 * thus lies essentially in a position plane parallel to the position plane of the printed circuit board LP and has a predeterminable height distance SPL from it.
  • the correction element is expediently positioned relative to the printed circuit board in such a way that it lies in a spatial area in, above and / or below the printed circuit board assembly area which is delimited by the side edges and the surface normals by these side edges.
  • the respective surface normal is perpendicular or orthogonal to the printed circuit board assembly surface. In this way, an undesired enlargement of the original area dimensions (length and width) of the circuit board is largely avoided.
  • a sufficient distribution of the current flow from the maximum MA of the originally given, local current distribution EC1 on the printed circuit board LP (as shown in FIG. 4) to the additional correction element is also still possible if the correction element KE1 from FIG. 1 has a second contact on the the first contact point COS1 opposite side of the circuit board LP is made.
  • a partial section or strip of the correction element is preferably provided in the area of those points on the printed circuit board LP at which an increase in the current level is desired in order to achieve the desired leveling of the current level across the cross section of the printed circuit board and correction element together, ie overall to be able to.
  • the circuit board has current mini a of its geometric current distribution.
  • P- et P- p PP 1 PPO ⁇ et tx N P- PP ⁇ P 01 ⁇ ⁇ * * tr rt P 1 er X ⁇ ⁇ rt ⁇ P Td DJ LQ p- Qa ⁇ PJ ⁇ Td Cfl P 3 ⁇ P - PPX LQ P ⁇ 3 DJ O P-
  • P 03 p P ⁇ P 1 X- 3 P p- ⁇ ! ⁇ ⁇ tx rt NP 3 OP 1 ⁇ P 3 P 03 ⁇ PP
  • P- O P- P ⁇ et ⁇ ⁇ ⁇ PJ tr P ⁇ ⁇ P- P ⁇ o ⁇ O ⁇ tr tx ⁇ PP p- ⁇ P ⁇ ⁇ - • o ⁇ rt LQ P- P DJ P ⁇ VPPP ⁇ 03 PPPPP tr PN ⁇ ⁇ P- ⁇ ⁇ P 3 Hi P tr PJ 3 P rt et ⁇ ⁇ DJ et cn DJ V 01 P ⁇ LQ ⁇ XP rt tr P ⁇ ⁇ rt 3
  • P ⁇ P- O PP 1 d Cfl P- P ⁇ P ⁇ ⁇ P P- tr ⁇ P- ⁇ P rt ⁇ p- P ⁇ ⁇ ⁇ LQ ⁇ P ⁇ ⁇ ⁇ 01 ⁇ LQ rt Hl et rt tr X ⁇ P rt PO 03 PP rt P ⁇ B * PP ⁇ ⁇ rt 3 ⁇ .
  • P 01 DJ PPP ⁇ P 1 P ⁇ P *, p ⁇ LQ p: ⁇ N SV P- P- rt d tr ⁇ tr P- ⁇ LQ P ⁇ J o J tr rt SV ⁇ PP Hi et P P- ⁇ P rt tr Cfl P o ⁇ P to ⁇ P ⁇ . rt n P 03 P- P- P- P- P- rt d tr ⁇ tr P- ⁇ LQ P ⁇ J o J tr rt SV ⁇ PP Hi et P P- ⁇ P rt tr Cfl P o ⁇ P to ⁇ P ⁇ . rt n P 03 P- P- P- P
  • Hi PPPP g 3 ⁇ o ⁇ ⁇ ⁇ 01 ⁇ PPP P- ⁇ ⁇ P 01 rt N ⁇
  • FIG. 14 finally shows a further variant of a correction element according to the invention.
  • a resistance film with a two-dimensional structure is introduced in the housing of the mobile radio device MP2 on the inside of the lower shell US.
  • Their electrical conductivity, shape or shape and / or other specific parameters are preferably selected such that they influence the predefined local current distribution on the printed circuit board according to the invention, viewed over the cross section.
  • FIG. 15 shows in a schematic representation that the correction element according to the invention can optionally also be formed by a foil KE9 printed with conductive structures. One or more discrete components can be applied to these.
  • the printed film KE9 contacts the mass of the printed circuit board LP via the contact point MV13.
  • a resonant antenna structure KE10 on the printed circuit board LP.
  • This resonant antenna structure is connected in FIG. 16 via a contact element CE to an impedance component IP for impedance matching.
  • Such a resonant antenna structure allows circuit board currents to be deflected in a targeted manner and their original field distribution to be changed in the desired manner.
  • the respective correction element according to the exemplary embodiments in FIGS. 1, 4, 9-16 is expediently positioned relative to the printed circuit board in such a way that it lies in a spatial area in, above and / or below the printed circuit board assembly surface, which is from the side edges and the surface normal is limited by these side edges.
  • the respective surface normal is perpendicular or orthogonal to the printed circuit board assembly surface.
  • the respective correction element is designed and attached to the printed circuit board in such a way that a current branch is effected from the original printed circuit board areas with higher current amplitude values to those areas of the printed circuit board with originally lower current amplitude values and overall, i.e.
  • a more homogeneous total current distribution than before without an additional correction element results.
  • correction element principle according to the invention shown by way of example with the aid of mobile radio devices according to FIGS. 1 and 18, can of course also be transferred to cordless telephones and other radio communication devices and used there accordingly.
  • the originally specified current or field distribution which is largely due to the electrical currents flowing on the printed circuit board, can thereby advantageously be reduced on or in the head of the user or distributed differently in a way that is more favorable to the organism, by expediently taking the following measures individually or in groups:
  • Modification of the electrical properties of the lower or upper shell by changing the conductivity of the magnetic properties or the capacitive properties, as well as any combination of these. This can be generated, for example, by introducing lossy or conductive, magnetic and / or dielectric particles, or mixtures thereof. Partial or complete coating of the outer skin with appropriate materials is also conceivable (see FIG. 9).
  • Multi-layer solutions to 1. to 5. may also be appropriate.
  • a substrate is also conceivable, which is constructed like a circuit board (PCD), which can be inserted and optionally contacted with parts of the device (see FIGS. 15, 16). 8. According to 7. with one or more additionally equipped discrete components on this substrate (see FIG. 15)
  • the housing of the respective mobile radio device e.g. Form MP1 of Figure 1 such that where the respective current maximum occurs, the distance DU to the support area on the head HE of the respective user is as large as possible.
  • this is achieved, for example, in that the housing of the mobile radio device MP1 has an inner surface that is convexly curved outward from the head HE and only bears with its two outer edges ABI, AB2) on the head HE of the respective user from FIG. 18.
  • the mobile radio device MP1 is forcibly kept at the greatest distance from the head of the user where the originally available current distribution on the printed circuit board has a maximum, namely in the central zone of the mobile radio device.
  • SAR value Specific Absorption Rate
  • the additional, current-carrying intermediate layer enables the SAR value of the respective radio communication device to be reduced in a simple manner, while at the same time the originally specified dimensions and the design of the respective radio communication device can be largely retained.
  • a further development of the invention relates to a keyboard mat with at least one current-conducting intermediate layer for reducing the SAR value of a radio communication device according to the invention.
  • FIG. 19 shows a mobile radio device MP1 with its main components in the disassembled state.
  • a printed circuit board LP is accommodated in its housing and has appropriate assemblies and / or components for the generation, processing and evaluation of radio signals to be transmitted and / or received. These have been omitted from FIG. 19 for the sake of drawing simplicity.
  • Of the housing only its upper shell OS is shown in FIG. 19, while rend the lower shell has also been omitted for the sake of clarity.
  • the upper and lower shell form a suitably shaped chamber for the printed circuit board LP in the assembled state in order to be able to hold the printed circuit board securely.
  • Conductor tracks and / or components of this printed circuit board LP are assigned to the keys of a keyboard mat TA, with which tactile, mechanical inputs
  • the keyboard unit TA has a carrier film TF on which a keyboard unit TM with a plurality of key elements is applied.
  • the carrier film TF is preferably designed as a flat carrier layer. It has an outer contour which preferably corresponds to the outer contour of the printed circuit board LP.
  • the carrier film TF is formed essentially over the entire area in the area of the keyboard mat TM, while it has a suitable, in particular rectangular, recess in the area of the display or the display device of the mobile radio device MP1.
  • a current-conducting intermediate layer ZL is now provided between the carrier film TF and the keyboard unit TM.
  • This intermediate layer ZL forms a kind of closed loop or a closed ring in the area of the four edge sides of the carrier film TF.
  • the intermediate layer ZL thus forms a frame which lies above the printed circuit board LP with a height spacing and is congruent with its border.
  • the current-carrying intermediate layer ZL is mechanically and electrically coupled in the region of that end face of the printed circuit board LP to its ground contact MP via a contacting bridge MK (see FIG. 19).
  • P- LP p 01 01 N 01 P 3 P ⁇ P txi P- ⁇ P LQ 3 rt- O P Q P P H P P ⁇ ⁇ tr ⁇ tx ⁇ X ⁇ Td P- P P P tx P P rt P ⁇ ⁇ ⁇ rt P ⁇ ⁇ N P P ⁇
  • P ⁇ P P- et ⁇ 3 PH p P- PPP p: ⁇ P rt ⁇ rt o ⁇ p: d P- ⁇ tr P ⁇ P- ⁇ ⁇ P- p- ⁇ 01 ⁇ 0 g 01 ⁇ ⁇ LQ tr VP ⁇ ⁇ 01 ⁇ tr tr PP cn
  • N P- 1 PPP LQ PO P > P ⁇ -> p: ⁇ rt I LP P 1 o P- P LQ ⁇ P 01 ⁇ 3 tr P ⁇ tr
  • the additional current-conducting intermediate layer for SAR reduction can be integrated into any type of keyboard mat, as it corresponds to the product-specific requirements:
  • Each element of a keyboard mat (e.g. also silicone mat, metal foil, spacer film, adhesive film, etc.) can be the carrier of the current-carrying intermediate layer;
  • the current-carrying intermediate layer can be varied in material (current-carrying) and production (e.g. vapor-deposited or punched, glued, galvanized, laminated, etc.);
  • the design of the current-carrying intermediate layer taking into account the device design with regard to contour and geometry (e.g. flat, ring-shaped closed or open, branched, etc.) and / or its thickness can be adapted depending on the shape and shape of the circuit board;
  • connection of the current-carrying intermediate layer can be adapted in terms of design, number and position and can be implemented as an integrated or additional contact element;
  • the contact partner can be varied as long as it is connected to the mass of the circuit board.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Support Of Aerials (AREA)
  • Transceivers (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Aerials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention concerne un appareil de radiocommunication qui comprend au moins un élément de correction (KE1) supplémentaire, réduisant la valeur du SAR, lequel est monté dans et/ou sur le boîtier (GH) de telle sorte que la répartition d'un courant électrique (EC1) qui s'écoule éventuellement sur la plaque de circuits imprimés (LP) et qui présente un maximum ou plusieurs maxima (MA) locaux, se fait à distance de l'élément de correction (KE1). Lors de l'utilisation d'un appareil radiotéléphonique mobile (MP1), il s'établit ainsi une homogénéisation et/ou un décalage en ce qui concerne la répartition locale du courant électrique total (EC1<*>).
EP02719649A 2001-03-07 2002-02-28 Appareil de radiocommunication pourvu d'un element de correction reduisant la valeur du sar Ceased EP1368856A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10110982 2001-03-07
DE10110982A DE10110982A1 (de) 2001-03-07 2001-03-07 Mobilfunkgerät mit einem SAR-Werk-reduzierenden Korrekturelement
DE10206415 2002-02-15
DE2002106415 DE10206415A1 (de) 2002-02-15 2002-02-15 Funkkommunikationsgerät sowie Tastaturmatte mit stromleitender Zwischenlage zur SAR-Wert-Reduzierung
PCT/DE2002/000735 WO2002071534A1 (fr) 2001-03-07 2002-02-28 Appareil de radiocommunication pourvu d'un element de correction reduisant la valeur du sar

Publications (1)

Publication Number Publication Date
EP1368856A1 true EP1368856A1 (fr) 2003-12-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02719649A Ceased EP1368856A1 (fr) 2001-03-07 2002-02-28 Appareil de radiocommunication pourvu d'un element de correction reduisant la valeur du sar

Country Status (5)

Country Link
US (1) US20040046701A1 (fr)
EP (1) EP1368856A1 (fr)
JP (1) JP2004524747A (fr)
CN (1) CN1507674A (fr)
WO (1) WO2002071534A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8344962B2 (en) 2008-11-20 2013-01-01 Nokia Corporation Apparatus, method and computer program for wireless communication

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149941A1 (de) * 2001-10-10 2003-04-30 Siemens Ag Mobilfunkgerät mit einem den SAR-Wert reduzierenden Korrekturelement
KR20040020218A (ko) * 2002-08-30 2004-03-09 주식회사 어필텔레콤 Ｓａｒ이 개선된 휴대폰
DE10248756A1 (de) 2002-09-12 2004-03-18 Siemens Ag Funkkommunikationsgerät mit reduziertem SAR-Wert
JP3956823B2 (ja) * 2002-10-07 2007-08-08 株式会社日本自動車部品総合研究所 アンテナの実装方法、アンテナの実装構造、およびモニタ装置
DE10251465A1 (de) * 2002-11-05 2004-05-19 Siemens Ag Verfahren zum Sendeleistungsabgleich bei einem mobilen Kommunikationsendgerät und Kommunikationsendgerät zur Durchführung des Verfahrens
US6798168B1 (en) * 2003-04-23 2004-09-28 Motorola, Inc. Battery with reduced specific absorption rate properties
US7280856B2 (en) 2003-05-24 2007-10-09 Samsung Electronics Co., Ltd. Portable terminal having tuner for changing radiation pattern
FR2864709B1 (fr) * 2003-12-30 2006-03-10 Sagem Procede de diminution du sar d'un telephone mobile et telephone mobile qui comprend des moyens pour abaisser le sar
DE102004032211A1 (de) * 2004-07-02 2006-01-19 Siemens Ag Funkkommunikationsgerät mit mindestens einem SAR-Wert-reduzierenden Korrekturelement
US7859467B2 (en) 2004-09-28 2010-12-28 Panasonic Corporation Radio machine antenna device and portable radio machine
FR2878680B1 (fr) * 2004-12-01 2007-03-02 Sagem Terminal de communication mobile
JP4966662B2 (ja) * 2005-04-13 2012-07-04 パナソニック株式会社 携帯無線機
US7526326B2 (en) * 2005-05-13 2009-04-28 Sony Ericsson Mobile Communications Ab Handheld wireless communicators with reduced free-space, near-field emissions
US7362275B2 (en) * 2006-02-14 2008-04-22 Palm, Inc. Internal antenna and motherboard architecture
KR100758633B1 (ko) * 2006-06-20 2007-09-14 삼성전자주식회사 돔 스위치 조립체 및 그를 이용한 이동 통신 단말기
EP1895617A1 (fr) * 2006-08-29 2008-03-05 Research In Motion Limited Dispositif de communication mobile sans fil avec un élément électroconducteur flottant, et méthode corréspondante
US7812770B2 (en) 2006-08-29 2010-10-12 Research In Motion Limited Mobile wireless communications device including an electrically conductive, electrically floating element and related methods
JP4807512B2 (ja) * 2006-10-17 2011-11-02 博久 矢埜 電磁波緩和携帯電話
CN101617438B (zh) * 2007-02-28 2013-07-31 诺基亚公司 辐射模式控制
WO2008152180A1 (fr) * 2007-06-14 2008-12-18 Elektrobit Wireless Communications Oy Structure d'antenne interne de téléphone portable
US9172134B2 (en) 2008-11-06 2015-10-27 Antenna79, Inc. Protective cover for a wireless device
US8214003B2 (en) 2009-03-13 2012-07-03 Pong Research Corporation RF radiation redirection away from portable communication device user
CN101867384B (zh) 2010-04-12 2015-04-01 中兴通讯股份有限公司 一种降低吸收率峰值的无线终端及其实现方法
US9293827B2 (en) 2010-05-10 2016-03-22 Samsung Electronics Co., Ltd. Communication terminal and antenna apparatus thereof
US9886066B2 (en) 2010-07-02 2018-02-06 BlackBerrry Limited Mobile wireless communications device including a keyboard assembly for reducing SAR and related methods
US20120068934A1 (en) * 2010-09-17 2012-03-22 Microsoft Corporation Interactive keyboard with viewable display
CN102419633B (zh) * 2010-09-27 2014-01-08 光宝电子(广州)有限公司 具有天线功能的键盘结构
CN102419781B (zh) * 2010-09-28 2014-03-19 英业达股份有限公司 导电衬垫的铺设方法
US8285350B2 (en) * 2010-10-08 2012-10-09 Research In Motion Limited Mobile wireless communications device including spaced apart elongate members for reducing SAR and related methods
CN102123186A (zh) * 2011-01-28 2011-07-13 惠州硕贝德无线科技股份有限公司 一种解决手机天线的电磁兼容性方法
DE102011004622B4 (de) 2011-02-23 2013-04-18 Ident Technology Ag Kapazitive Sensoreinrichtung und Funkgerät mit kapazitiver Sensoreinrichtung sowie Verfahren zum Einstellen einer Sendeleistung eines Funkgerätes
KR101801186B1 (ko) * 2011-02-25 2017-11-24 엘지전자 주식회사 이동 단말기
US8624788B2 (en) * 2011-04-27 2014-01-07 Blackberry Limited Antenna assembly utilizing metal-dielectric resonant structures for specific absorption rate compliance
US9838060B2 (en) 2011-11-02 2017-12-05 Antenna79, Inc. Protective cover for a wireless device
CN102509878B (zh) * 2011-12-07 2014-08-20 鸿富锦精密工业（深圳）有限公司 具有提高天线性能结构的电子装置
US8902109B2 (en) * 2012-02-05 2014-12-02 Auden Techno Corp. Communication device
JP5684167B2 (ja) 2012-02-11 2015-03-11 レノボ・シンガポール・プライベート・リミテッド 無線端末装置のアンテナ・システム
CN104253309B (zh) * 2013-06-26 2018-08-17 中山市云创知识产权服务有限公司 无线通信装置
CN105375943B (zh) * 2014-08-29 2018-01-26 启碁科技股份有限公司 射频装置及无线通信装置
CN108075232A (zh) * 2016-11-17 2018-05-25 佳邦科技股份有限公司 金属通讯装置的天线结构
JP2019205131A (ja) * 2018-05-25 2019-11-28 シャープ株式会社 制御装置、電子機器、及び制御方法
CN110323573A (zh) * 2019-05-14 2019-10-11 惠州Tcl移动通信有限公司 天线组件和通信装置
US11996614B2 (en) * 2021-08-17 2024-05-28 Meta Platforms Technologies, Llc Apparatus and method for improving specific absorption rate (SAR) using metallic sheets as reflectors

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471493A (en) * 1982-12-16 1984-09-11 Gte Automatic Electric Inc. Wireless telephone extension unit with self-contained dipole antenna
GB9102935D0 (en) * 1991-02-12 1991-03-27 Shaye Communications Ltd Improvements in and relating to antennae
US5561436A (en) * 1994-07-21 1996-10-01 Motorola, Inc. Method and apparatus for multi-position antenna
US5541609A (en) * 1995-03-08 1996-07-30 Virginia Polytechnic Institute And State University Reduced operator emission exposure antennas for safer hand-held radios and cellular telephones
FI962091A0 (fi) * 1996-05-17 1996-05-17 Heikki Ryhaenen Foerfarande och anordning foer lokal avlaegsning och begraensning av ett radiofrekvent straolningsfelt
US6031503A (en) * 1997-02-20 2000-02-29 Raytheon Company Polarization diverse antenna for portable communication devices
EP0929115A1 (fr) * 1998-01-09 1999-07-14 Nokia Mobile Phones Ltd. Antenne pour un appareil de communication mobile
US6429818B1 (en) * 1998-01-16 2002-08-06 Tyco Electronics Logistics Ag Single or dual band parasitic antenna assembly
SE9801381D0 (sv) * 1998-04-20 1998-04-20 Allgon Ab Ground extension arrangement for coupling to ground means in an antenna system, and an antenna system and a mobile radio device having such ground arrangement
IL125674A (en) * 1998-08-05 2004-08-31 David Zilberberg Compact mobile telephone for reducing radiation effect
EP1067627B1 (fr) * 1999-07-09 2009-06-24 IPCom GmbH & Co. KG Appareil de radiocommunication à deux bandes
US6509882B2 (en) * 1999-12-14 2003-01-21 Tyco Electronics Logistics Ag Low SAR broadband antenna assembly
US6567047B2 (en) * 2000-05-25 2003-05-20 Tyco Electronics Logistics Ag Multi-band in-series antenna assembly
US6515630B2 (en) * 2000-06-09 2003-02-04 Tyco Electronics Logistics Ag Slot wedge antenna assembly
US6934515B2 (en) * 2000-06-27 2005-08-23 Wireless Avionics Ltd. Electromagnetic radiation alerting device for use with a cellular telephone
US6810275B2 (en) * 2000-12-20 2004-10-26 Motorola, Inc. Hand-held communication device with vertically oriented antenna

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO02071534A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8344962B2 (en) 2008-11-20 2013-01-01 Nokia Corporation Apparatus, method and computer program for wireless communication

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US20040046701A1 (en) 2004-03-11

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