EP1006605A1 - Tragbares Gerät - Google Patents

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Publication number
EP1006605A1
EP1006605A1 EP99124720A EP99124720A EP1006605A1 EP 1006605 A1 EP1006605 A1 EP 1006605A1 EP 99124720 A EP99124720 A EP 99124720A EP 99124720 A EP99124720 A EP 99124720A EP 1006605 A1 EP1006605 A1 EP 1006605A1
Authority
EP
European Patent Office
Prior art keywords
antenna
telephone
radiation
patch
shield
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.)
Granted
Application number
EP99124720A
Other languages
English (en)
French (fr)
Other versions
EP1006605B1 (de
Inventor
Niels Jorgen Jensen
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.)
Ipcom GmbH and Co KG
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1006605A1 publication Critical patent/EP1006605A1/de
Application granted granted Critical
Publication of EP1006605B1 publication Critical patent/EP1006605B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • H01Q1/243—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 built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic

Definitions

  • the invention relates to a hand-held apparatus comprising antenna means for emitting a radio signal, and to such an apparatus comprising a shield which consists of an insulating material and surrounds some of the electronic components of the apparatus, and which is metallized on the side facing away from the components as well as on the side facing the components in order to shield radio frequency signals.
  • the invention moreover relates to a holder for a hand-held apparatus, provided with a patch antenna, for emitting radio signals, and to a method of transferring radio signals between such an apparatus and a radio installation fixedly mounted in a vehicle.
  • the portable transmitter and receiver units are usually provided with antennas which have an omnidirectional radiation diagram, as this gives the greatest possible probability that a connection is established to the mobile telephone concerned at a given time, thereby facilitating the system planning of the system operators.
  • antennas which have an omnidirectional radiation diagram, as this gives the greatest possible probability that a connection is established to the mobile telephone concerned at a given time, thereby facilitating the system planning of the system operators.
  • the users of the mobile telephones wish that the system has a coverage as good as possible.
  • the omnidirectional radiation diagram has the drawback that the telephone will usually be arranged in such a manner with respect to a user's head that the head is present precisely where the electrical field from the antenna of the telephone is strongest. This means that a certain power loss will occur, as part of the radiation energy dissipates in the head, and also involves the risk that precisely this energy dissipation may constitute a health hazard. Because of the possible health hazard in particular, it is therefore desired that the radiation should be directed away from the user's head.
  • the radiation is mainly directed away from the user's head, the transmission/reception conditions of the telephone will moreover be impaired, unless a base station is present precisely in this direction. Therefore, the solution is useful only in areas where the base stations are located so close to each other that there will always be a sufficiently close base station in the direction concerned.
  • US 5 530 919 e.g., describes an apparatus which has a built-in directional antenna and a rod antenna.
  • the directional antenna is used as a transmitter antenna and the rod antenna as a receiver antenna.
  • This apparatus too, therefore relies on the presence of a base station in the direction in which the directional antenna is oriented, as the apparatus can only transmit in this direction.
  • the rod antenna enables reception from all directions.
  • EP 214 806 describes an apparatus with a built-in directional antenna and a rod antenna. Both antennas are used here as receiver antennas in order to obtain receiver diversity, while only the rod antenna is used as a transmitter antenna. Thus, this apparatus does not avoid radiation into the user's head.
  • an object of the invention is to provide a solution which, under poor transmission/reception conditions, is capable of transmitting and receiving with a quality which corresponds to the normal mobile telephones having omnidirectional radiation characteristic, while exposing the user's head to the least possible radiation risk.
  • the hand-held apparatus for emitting a radio signal comprises at least two transmitter antennas which have different radiation characteristics.
  • one transmitter antenna as stated in claim 2
  • the other has a directional radiation characteristic.
  • the antenna having omnidirectional radiation characteristic is then used only when it is necessary owing to the transmission/reception conditions.
  • the antenna having omnidirectional radiation characteristic is a telescoping antenna, while the antenna having directional radiation characteristic is a patch antenna.
  • the telescoping antenna may be adapted to be connected only when it is extended fully or partly, as stated in claim 4. Hereby, it is the user himself who decides whether the transmission/reception conditions are so poor that it is necessary to connect the telescoping antenna.
  • the apparatus may comprise means for connecting and disconnecting the telescoping antenna in response to a received signal. This may take place e.g. in that a base station, when it is difficult for it to receive the signal emitted from the apparatus, requests the apparatus to connect the telescoping antenna.
  • the apparatus comprises means for measuring the field strength of a signal received on the patch antenna, and that the telescoping antenna is adapted to be connected only when said field strength is below a specific value, the received signal level being then used as an indicator of whether the transmitted signals are sufficiently strong in a direction toward the base station. This is possible since the apparatus normally transmits to and receives from one and the same base station.
  • US 5 530 919 discloses an apparatus which has an incorporated antenna and a shield which is disposed between the antenna and the user's head. However, they are two separate components which therefore still take up some space. Accordingly, a further object of the invention is to provide an apparatus having a built-in patch antenna which takes up less space than in the known devices.
  • the apparatus comprises a shield which surrounds some of the electronic components of the apparatus and consists of an insulating material metallized on the side facing away from the components as well as on the side facing the components, in that at least part of the metallization facing away from the components constitutes a patch antenna which is adapted to transmit and/or receive said radio signals.
  • devices of this type will be provided with a shield against radio frequency signals. It will usually be a metallized plastics shield which is metallized on both sides for reasons of production, so that in fact it is a double shield.
  • the inner side of the shield can still serve the function of a shield against radio frequency signals, as stated in claim 8, while constituting the ground plane associated with the patch antenna.
  • the desired radiation diagram is achieved in that the patch antenna, like in claim 9, is disposed on the side of the apparatus which, when used by a person, faces away from the person. For a mobile telephone, this will be the rear side of the telephone.
  • the directional effect is achieved because the other metal parts and printed circuit boards of the telephone perform a shielding effect toward the person.
  • a holder for such an apparatus is provided with a patch antenna which is adapted to cooperate with the corresponding patch antenna on an apparatus placed in a holder, it is ensured that the radio frequency signals can be transferred wirelessly between the two patch antennas, thereby avoiding the use of coaxial connectors.
  • the holder comprises means for ensuring a specific position of the two patch antennas with respect to each other when an apparatus is placed in the holder, the best possible transfer of signals is obtained between the two patch antennas, as these will be positioned in the same manner with respect to each other each time.
  • the invention relates to a method of transferring radio signals between a hand-held apparatus and a radio installation fixedly mounted in a vehicle, comprising transferring the signals between two patch antennas which are placed in the apparatus and a holder therefor, respectively.
  • a printed circuit board 1 mounts a plurality of electronic components 2, and owing to incident and emanating radiation of radio frequency signals the components are surrounded by a shield 3, which typically consists of a plastics material 4 provided with a metallization 5, 6 on both sides.
  • a shield 3 typically consists of a plastics material 4 provided with a metallization 5, 6 on both sides.
  • Metallization on one of the sides will normally be sufficient to perform the shielding function; but, generally, the shield will be metallized on both sides for reasons of production. This means that the metallization on the outer side may be used for other purposes.
  • Fig. 2 It is shown in fig. 2 how this may be utilized for a patch antenna according to the invention.
  • the metallization 6 is still present on the inner side of the plastics material 4, while the metallization 5 from fig. 1 on the areas 7 and 8 is removed.
  • the metallization constitutes a patch antenna 9 on the central part of the outer side.
  • This patch antenna inter alia because of the shielding metallization 6, will particularly radiate radio frequency signals in a direction away from the plastics material 4 and thereby away from the components 2.
  • the printed circuit board 1 itself and the other metal parts of the telephone will provide a further shielding effect in the opposite direction.
  • FIG 3 shows that when the shield 4 with the patch antenna 9 is placed on the rear side 10 of a telephone 11, a radiation diagram is obtained where the radiation 12 is directed away from the person 13 who uses the telephone. It will be seen that the telephone 11 is also provided with a rod antenna 14 which, in this situation, is not connected and therefore does not emit radio signals.
  • the rod antenna 14 may be arranged as a telescoping antenna which is connected only when it is extended. In that case, it has an omnidirectional radiation diagram, which means that when it is extended, the telephone 11, generally speaking, emits (and receives) radio signals equally well in all directions, and thus also in the direction of the person 13. The idea is thus that in areas having sufficient radio coverage, the radiation 12 from the patch antenna 9 will be sufficient to ensure connection, as there will usually be a sufficiently close base station in the direction of the radiation 12. The telescoping antenna 14 may thus be retracted and thereby be disconnected. Then, the person 13 will not be exposed to the strong radiation from the telephone. This corresponds to the situation shown in fig. 3.
  • the antenna 14 may then be extended and thereby connected so that the telephone 11 has the omnidirectional radiation diagram with the radiation 15.
  • the person 13 is exposed to radiation in the same manner as in ordinary mobile telephones which are just provided with an omnidirectional antenna; but, as mentioned, this will just be the case where the radio coverage is not very good.
  • the radio coverage in urban areas will usually be sufficient for the situation in fig. 3 to be used, thereby avoiding exposing the person to the incident radiation, while outside the urban areas it will typically be necessary to supplement with the telescoping antenna and the associated incident radiation of radio energy. For the great majority of subscribers, the radiation to which they are exposed will thus be reduced considerably.
  • Fig. 5 shows a block diagram for an alternative embodiment.
  • the signal to and from the antenna 4 is here connected to the transmitting/receiving circuit 16 of the telephone via a switch 17.
  • a detecting circuit 18 can measure the field strength of a signal received on the patch antenna 9 and control the switch 17 in response thereto. If the field strength is above a predetermined threshold value, the connection between the antenna 14 and the transmitting/receiving circuit is disconnected, while, correspondingly, this connection is established when the field strength of the received signal is below this threshold value.
  • the antenna 14 is connected only when the signal received on the patch antenna 9 is too low to ensure a good connection.
  • the antenna 14 is a telescoping antenna, the full effect of this principle is achieved only if the antenna is extended, of course.
  • a special signal may be transmitted from the base station to the telephone if the signal received therefrom is too weak, and the detecting circuit 18 may then be adapted to receive this signal and control the switch 17 in response thereto.
  • the signal received on the base station that decides whether it is necessary to connect the omnidirectional antenna 14.
  • the coaxial cables may be replaced by two patch antennas arranged opposite to each other, as will be seen in fig. 6.
  • the holder 20, also called cradle, of the telephone is provided with a patch antenna 19 whose size corresponds to the size of the patch antenna 9 in the telephone, and which is arranged so that it will be right opposite it when the telephone is placed in the holder.
  • the patch antenna 19 is connected to the external antenna by means of the cable 21.
  • the holder 20 may moreover be provided with e.g. guide rails capable of ensuring that a telephone is always placed in the holder such that the two patch antennas are right opposite each other and at a well-defined distance from each other.
  • the radio frequency signals are thus transferred wirelessly between the two patch antennas. This means that the coaxial connectors may be saved, while obtaining a solution which is not subjected to wear, as is the case with the coaxial connectors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Set Structure (AREA)
  • Waveguide Aerials (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP99124720.6A 1996-07-05 1997-07-04 Tragbares Gerät Expired - Lifetime EP1006605B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK74296A DK176625B1 (da) 1996-07-05 1996-07-05 Håndbåret apparat med antennemidler til udsendelse af et radiosignal
DK74296 1996-07-05
EP97929142A EP0916166B1 (de) 1996-07-05 1997-07-04 Tragbares gerät mit antenne zum aussenden eines funksignals

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP97929142A Division EP0916166B1 (de) 1996-07-05 1997-07-04 Tragbares gerät mit antenne zum aussenden eines funksignals
EP97929142.4 Division 1998-01-15

Publications (2)

Publication Number Publication Date
EP1006605A1 true EP1006605A1 (de) 2000-06-07
EP1006605B1 EP1006605B1 (de) 2013-05-29

Family

ID=8097018

Family Applications (3)

Application Number Title Priority Date Filing Date
EP97929142A Expired - Lifetime EP0916166B1 (de) 1996-07-05 1997-07-04 Tragbares gerät mit antenne zum aussenden eines funksignals
EP99124720.6A Expired - Lifetime EP1006605B1 (de) 1996-07-05 1997-07-04 Tragbares Gerät
EP99124721A Withdrawn EP1006606A1 (de) 1996-07-05 1997-07-04 Halter und Verfahren zur Übertragung von Signalen zwischen dem Halter und einem Gerät

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP97929142A Expired - Lifetime EP0916166B1 (de) 1996-07-05 1997-07-04 Tragbares gerät mit antenne zum aussenden eines funksignals

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP99124721A Withdrawn EP1006606A1 (de) 1996-07-05 1997-07-04 Halter und Verfahren zur Übertragung von Signalen zwischen dem Halter und einem Gerät

Country Status (5)

Country Link
EP (3) EP0916166B1 (de)
AU (1) AU3336397A (de)
DE (1) DE69713103T2 (de)
DK (1) DK176625B1 (de)
WO (1) WO1998001919A2 (de)

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KR20020021492A (ko) * 2000-09-15 2002-03-21 윤종용 이동통신 단말기에서 무선신호 경로 제어방법
KR20030010261A (ko) * 2001-07-26 2003-02-05 에스케이 텔레콤주식회사 루프 안테나를 갖는 휴대폰
EP1307949A1 (de) * 2000-08-11 2003-05-07 Siemens Aktiengesellschaft Antennenanordnung eines mobilen kommunikationsendgerätes, insbesondere eines mobiltelefons
FR2837339A1 (fr) * 2002-03-15 2003-09-19 France Telecom Terminal portable de telecommunication
WO2005011053A1 (en) 2003-07-24 2005-02-03 Lk Products Oy Antenna arrangement for connecting an external device to a radio device
KR100493073B1 (ko) * 2002-12-06 2005-06-02 삼성전자주식회사 휴대용 무선 단말기의 안테나 장치
KR100498936B1 (ko) * 2002-11-15 2005-07-04 삼성전자주식회사 휴대용 무선 단말기의 다이버시티 안테나 장치
KR100705883B1 (ko) * 2000-03-03 2007-04-10 콸콤 인코포레이티드 휴대용 무선 통신 장치를 위한 하이브리드 안테나 시스템
EP2615685A3 (de) * 2012-01-16 2014-09-03 Samsung Electronics Co., Ltd Kommunikationssystem mit Antenne
US9673507B2 (en) 2011-02-11 2017-06-06 Pulse Finland Oy Chassis-excited antenna apparatus and methods
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FI20055420A0 (fi) 2005-07-25 2005-07-25 Lk Products Oy Säädettävä monikaista antenni
FI119009B (fi) 2005-10-03 2008-06-13 Pulse Finland Oy Monikaistainen antennijärjestelmä
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EP2534759B1 (de) 2010-02-13 2013-11-13 Peiker acustic GmbH & Co. KG Anordnung zur ankopplung eines mobiltelefons an eine externe antenne
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US9722308B2 (en) 2014-08-28 2017-08-01 Pulse Finland Oy Low passive intermodulation distributed antenna system for multiple-input multiple-output systems and methods of use
US9634709B2 (en) 2014-09-04 2017-04-25 Apple Inc. Removable electronic device case with supplemental antenna element
US9654164B2 (en) 2015-04-14 2017-05-16 Apple Inc. Removable electronic device case with supplemental wireless circuitry
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Cited By (13)

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KR100705883B1 (ko) * 2000-03-03 2007-04-10 콸콤 인코포레이티드 휴대용 무선 통신 장치를 위한 하이브리드 안테나 시스템
EP1307949A1 (de) * 2000-08-11 2003-05-07 Siemens Aktiengesellschaft Antennenanordnung eines mobilen kommunikationsendgerätes, insbesondere eines mobiltelefons
KR20020021492A (ko) * 2000-09-15 2002-03-21 윤종용 이동통신 단말기에서 무선신호 경로 제어방법
KR20030010261A (ko) * 2001-07-26 2003-02-05 에스케이 텔레콤주식회사 루프 안테나를 갖는 휴대폰
FR2837339A1 (fr) * 2002-03-15 2003-09-19 France Telecom Terminal portable de telecommunication
KR100498936B1 (ko) * 2002-11-15 2005-07-04 삼성전자주식회사 휴대용 무선 단말기의 다이버시티 안테나 장치
KR100493073B1 (ko) * 2002-12-06 2005-06-02 삼성전자주식회사 휴대용 무선 단말기의 안테나 장치
WO2005011053A1 (en) 2003-07-24 2005-02-03 Lk Products Oy Antenna arrangement for connecting an external device to a radio device
US7405702B2 (en) 2003-07-24 2008-07-29 Pulse Finland Oy Antenna arrangement for connecting an external device to a radio device
US9673507B2 (en) 2011-02-11 2017-06-06 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US9917346B2 (en) 2011-02-11 2018-03-13 Pulse Finland Oy Chassis-excited antenna apparatus and methods
EP2615685A3 (de) * 2012-01-16 2014-09-03 Samsung Electronics Co., Ltd Kommunikationssystem mit Antenne
US9531062B2 (en) 2012-01-16 2016-12-27 Samsung Electronics Co., Ltd. Communication system

Also Published As

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WO1998001919A2 (en) 1998-01-15
DK74296A (da) 1998-01-06
EP1006606A1 (de) 2000-06-07
DK176625B1 (da) 2008-12-01
WO1998001919A3 (en) 1998-03-05
AU3336397A (en) 1998-02-02
EP0916166A2 (de) 1999-05-19
DE69713103T2 (de) 2003-02-27
DE69713103D1 (de) 2002-07-11
EP1006605B1 (de) 2013-05-29
EP0916166B1 (de) 2002-06-05

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