EP0588365A1 - Radio-émetteur-récepteur, portable à faible irradiation électromagnétique de l'utilisateur - Google Patents
Radio-émetteur-récepteur, portable à faible irradiation électromagnétique de l'utilisateur Download PDFInfo
- Publication number
- EP0588365A1 EP0588365A1 EP93115026A EP93115026A EP0588365A1 EP 0588365 A1 EP0588365 A1 EP 0588365A1 EP 93115026 A EP93115026 A EP 93115026A EP 93115026 A EP93115026 A EP 93115026A EP 0588365 A1 EP0588365 A1 EP 0588365A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handset
- antenna
- user
- irradiation
- portable transceiver
- 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
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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 a portable transceiver apparatus, in particular to a radiomobile telephone set, with low irradiation of the user comprising a handset and an antenna applied to said handset.
- FIGs. 1 and 2 there are illustrated schematically in a side view two of such sets nowadays extensively used on the market, in particular in Fig. 1 the Motorola 8800X model and in Fig. 2 the 9800X one; however the schematic side view of Fig. 1 is the view of all portable transceiver apparatuses.
- Such apparatuses basically comprise a handset AC and an antenna AA applied to the handset.
- Located inside said handset generally are a loudspeaker AL, a microphone AM, a control panel AK and the circuitry for operating the apparatus.
- the antenna AA of a radiomobile telephone set and, more in general, of a portable transceiver apparatus is placed in the upper portion of the handset AC.
- the solution according to the present invention to limit the irradiation of the user's head by a portable transceiver apparatus consists in placing antenna AA on handset AC in a suitable position so as to be far away from the user's head; this different positioning affects doubly the limitation of irradiation: first of all the increase in distance reduces, as well known, the power per unit area, secondly since the radiation pattern of an antenna is anything but uniform in all directions, a suitable positioning of the antenna may have the effect that the directions of less radiation are turned toward the user's head.
- a radiation pattern RD of the assembly formed by handset AC and antenna AA in accordance with the present invention represented in overlap to an apparatus and to its user's head U, obtained by placing antenna AA on the back of housing AC and by orienting it in a direction perpendicular to the handset itself.
- the contribution to the radiation pattern due to handset AC is negligible or can be easily made negligible by screening the handset itself.
- FIG. 3 and 4 show the schematic side elevational views of two different embodiments of the present invention which implement such choice.
- a further possibility consists in placing antenna AA in such a position that the handset AC acts as an electromagnetic shield: an example of such positioning has been already shown with relation to Fig. 9; antenna AA has its intrinsic radiation pattern; by placing in its neighbourhood any kind of object, particularly a metallic one, the global radiation pattern is changed and choosing suitably the shape of handset AC and the distribution of its metallic masses a reduction of the irradiation in direction of the user can be obtained. If, by acting upon such parameters, the desired effect is not obtained, or anyway not in a satisfactory manner, there is still the possibility of adding further elements which act as a more effective electromagnetic shield; such additional elements can be either passive metallic elements or active elements, e.g. structures realized through microstrips.
- Figs. 5 and 6 show the schematic side views of two different embodiments of the present invention which implement this solution: in both cases antenna AA is arranged vertically if the apparatus is not active and horizontally when the apparatus is active; in the embodiment of Fig. 5, the handset AC can easily act as an electromagnetic shield.
- Figs. 7 and 8 show the schematic side views of two different embodiments of the present invention which implement such a solution: in both cases leg TL is represented in a completely drawn out solution, as usual when the apparatus is active; when, on the contrary, the apparatus is not active, the leg TL is hidden inside the handset AC; in the embodiment illustrated in Fig. 8, the leg TL is further mounted on a joint OJ to improve the orientation of the radiation pattern and/or to cause handset AC act as an electromagnetic shield.
- telescopic leg TL In order to prevent telescopic leg TL from radiating itself, there is a first possibility of inserting inside it means for transferring signals from antenna AA to handset AC and viceversa from handset AC to antenna AA; such means can be constituted e.g. by a coaxial cable.
- a second possibility is to place inside the leg TL another telescopic leg having a diameter smaller than the first one so that both telescopic legs form by themselves a coaxial cable capable of realizing the above-mentioned signal transfers.
- these different elements can be then combined in several ways to give rise to an apparatus with low irradiation of the user in accordance with the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI922147A IT1255603B (it) | 1992-09-18 | 1992-09-18 | Apparecchio ricetrasmettitore portatile, in particolare apparecchio telefonico radiomobile, a bassa irradiazione dell'utente. |
ITMI922147 | 1992-09-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0588365A1 true EP0588365A1 (fr) | 1994-03-23 |
Family
ID=11363965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93115026A Ceased EP0588365A1 (fr) | 1992-09-18 | 1993-09-17 | Radio-émetteur-récepteur, portable à faible irradiation électromagnétique de l'utilisateur |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0588365A1 (fr) |
IT (1) | IT1255603B (fr) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994021053A1 (fr) * | 1993-03-12 | 1994-09-15 | Dickie Robert G | Dispositif d'antenne pour telephones cellulaires portables |
EP0675562A1 (fr) * | 1994-03-30 | 1995-10-04 | Deutsche Telekom AG | Antenne pour appareil à main pour communication mobile muni de moyens pour protéger l'utilisateur contre le rayonnement |
EP0689297A1 (fr) * | 1994-06-24 | 1995-12-27 | Siemens Aktiengesellschaft | Radio émetteur-récepteur portable |
WO1997023015A1 (fr) * | 1995-12-16 | 1997-06-26 | Eckhard Mutterer | Antenne telescopique pour telephone mobile |
EP0806809A1 (fr) * | 1995-01-28 | 1997-11-12 | Lei Wang | Dispositif portatif de telecommunication a appareil a antenne assurant la protection contre les rayonnements |
WO1997049191A1 (fr) * | 1996-06-18 | 1997-12-24 | Peter Stephen Ireland | Telephone cellulaire comportant moins de dangers dus a des champs electromagnetiques |
GB2319416A (en) * | 1993-07-23 | 1998-05-20 | Nec Corp | Mobile telephone with an aerial which projects away from a user's head to reduce interaction |
GB2280322B (en) * | 1993-07-23 | 1998-08-05 | Nec Corp | Portable radio apparatus |
US6005525A (en) * | 1997-04-11 | 1999-12-21 | Nokia Mobile Phones Limited | Antenna arrangement for small-sized radio communication devices |
GB2339361A (en) * | 1999-11-09 | 2000-01-19 | Weston James L | Mobile telephone handset has antenna adjacent mouthpiece |
EP0997978A1 (fr) * | 1998-10-27 | 2000-05-03 | Robert Bosch Gmbh | Diagrammes de rayonnement pour communication mobile |
GB2350482A (en) * | 1999-05-27 | 2000-11-29 | Hugh Henry Andrew Pincherle | Mobile 'phone with antenna pointing away from user's head |
GB2358103A (en) * | 2000-01-06 | 2001-07-11 | Reza Djali | Radio telephone has antenna at lower end of handset |
WO2001054439A1 (fr) * | 2000-01-24 | 2001-07-26 | Jungjin Lee | Telephone portable dont l'antenne est montee dans le fond du combine |
GB2358759A (en) * | 1999-11-05 | 2001-08-01 | Matsushita Electric Ind Co Ltd | Folding mobile telephone has slanting, extendible antenna |
GB2366476A (en) * | 2000-09-05 | 2002-03-06 | Diran Hoonanian | A safer mobile phone |
EP1271687A1 (fr) * | 2000-12-28 | 2003-01-02 | Mitsubishi Denki Kabushiki Kaisha | Dispositif terminal |
US7031762B2 (en) | 2000-12-28 | 2006-04-18 | Mitsubishi Denki Kabushiki Kaisha | Mobile terminal including first and second housings and an antenna |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0214806A2 (fr) * | 1985-08-29 | 1987-03-18 | Nec Corporation | Radio portable |
EP0339629A2 (fr) * | 1988-04-27 | 1989-11-02 | Motorola, Inc. | Antenne interne à large bande |
FR2679086A1 (fr) * | 1991-07-11 | 1993-01-15 | Matra Communication | Appareil d'emission et de reception a antenne. |
EP0532960A1 (fr) * | 1991-09-06 | 1993-03-24 | Siemens Aktiengesellschaft | Radioémetteur-récepteur portable et compact avec une antenne-fouet escamotable ou rabattable |
-
1992
- 1992-09-18 IT ITMI922147A patent/IT1255603B/it active IP Right Grant
-
1993
- 1993-09-17 EP EP93115026A patent/EP0588365A1/fr not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0214806A2 (fr) * | 1985-08-29 | 1987-03-18 | Nec Corporation | Radio portable |
EP0339629A2 (fr) * | 1988-04-27 | 1989-11-02 | Motorola, Inc. | Antenne interne à large bande |
FR2679086A1 (fr) * | 1991-07-11 | 1993-01-15 | Matra Communication | Appareil d'emission et de reception a antenne. |
EP0532960A1 (fr) * | 1991-09-06 | 1993-03-24 | Siemens Aktiengesellschaft | Radioémetteur-récepteur portable et compact avec une antenne-fouet escamotable ou rabattable |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994021053A1 (fr) * | 1993-03-12 | 1994-09-15 | Dickie Robert G | Dispositif d'antenne pour telephones cellulaires portables |
GB2319416B (en) * | 1993-07-23 | 1998-08-05 | Nec Corp | Portable radio apparatus |
GB2319416A (en) * | 1993-07-23 | 1998-05-20 | Nec Corp | Mobile telephone with an aerial which projects away from a user's head to reduce interaction |
GB2280322B (en) * | 1993-07-23 | 1998-08-05 | Nec Corp | Portable radio apparatus |
EP0675562A1 (fr) * | 1994-03-30 | 1995-10-04 | Deutsche Telekom AG | Antenne pour appareil à main pour communication mobile muni de moyens pour protéger l'utilisateur contre le rayonnement |
EP0689297A1 (fr) * | 1994-06-24 | 1995-12-27 | Siemens Aktiengesellschaft | Radio émetteur-récepteur portable |
US5940039A (en) * | 1995-01-28 | 1999-08-17 | Wang; Lei A. | Hand-held communication equipment with a radiation shielding antenna apparatus |
EP0806809A4 (fr) * | 1995-01-28 | 1998-04-22 | Lei Wang | Dispositif portatif de telecommunication a appareil a antenne assurant la protection contre les rayonnements |
EP0806809A1 (fr) * | 1995-01-28 | 1997-11-12 | Lei Wang | Dispositif portatif de telecommunication a appareil a antenne assurant la protection contre les rayonnements |
WO1997023015A1 (fr) * | 1995-12-16 | 1997-06-26 | Eckhard Mutterer | Antenne telescopique pour telephone mobile |
WO1997049191A1 (fr) * | 1996-06-18 | 1997-12-24 | Peter Stephen Ireland | Telephone cellulaire comportant moins de dangers dus a des champs electromagnetiques |
US6005525A (en) * | 1997-04-11 | 1999-12-21 | Nokia Mobile Phones Limited | Antenna arrangement for small-sized radio communication devices |
EP0997978A1 (fr) * | 1998-10-27 | 2000-05-03 | Robert Bosch Gmbh | Diagrammes de rayonnement pour communication mobile |
GB2350482A (en) * | 1999-05-27 | 2000-11-29 | Hugh Henry Andrew Pincherle | Mobile 'phone with antenna pointing away from user's head |
GB2358759A (en) * | 1999-11-05 | 2001-08-01 | Matsushita Electric Ind Co Ltd | Folding mobile telephone has slanting, extendible antenna |
US6721420B1 (en) | 1999-11-05 | 2004-04-13 | Matsushita Electric Industrial Co., Ltd. | Folding portable telephone apparatus |
GB2358759B (en) * | 1999-11-05 | 2003-10-01 | Matsushita Electric Ind Co Ltd | Folding portable telephone apparatus |
GB2339361A (en) * | 1999-11-09 | 2000-01-19 | Weston James L | Mobile telephone handset has antenna adjacent mouthpiece |
GB2358103A (en) * | 2000-01-06 | 2001-07-11 | Reza Djali | Radio telephone has antenna at lower end of handset |
WO2001054439A1 (fr) * | 2000-01-24 | 2001-07-26 | Jungjin Lee | Telephone portable dont l'antenne est montee dans le fond du combine |
GB2366476A (en) * | 2000-09-05 | 2002-03-06 | Diran Hoonanian | A safer mobile phone |
EP1271687A1 (fr) * | 2000-12-28 | 2003-01-02 | Mitsubishi Denki Kabushiki Kaisha | Dispositif terminal |
EP1271687A4 (fr) * | 2000-12-28 | 2003-07-23 | Mitsubishi Electric Corp | Dispositif terminal |
EP1443590A2 (fr) * | 2000-12-28 | 2004-08-04 | Mitsubishi Denki Kabushiki Kaisha | Terminal téléphonique mobile et pliable à antenne interne |
EP1443590A3 (fr) * | 2000-12-28 | 2005-05-04 | Mitsubishi Denki Kabushiki Kaisha | Terminal téléphonique mobile et pliable à antenne interne |
US7031762B2 (en) | 2000-12-28 | 2006-04-18 | Mitsubishi Denki Kabushiki Kaisha | Mobile terminal including first and second housings and an antenna |
US7225003B2 (en) | 2000-12-28 | 2007-05-29 | Mitsubishi Denki Kabushiki Kaisha | Mobile terminal including first and second housings and an antenna |
Also Published As
Publication number | Publication date |
---|---|
ITMI922147A1 (it) | 1994-03-18 |
ITMI922147A0 (it) | 1992-09-18 |
IT1255603B (it) | 1995-11-09 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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Effective date: 19940428 |
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Effective date: 19970702 |
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Free format text: ORIGINAL CODE: EPIDOS AGRA |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
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18R | Application refused |
Effective date: 20010225 |