WO1998010483A1 - Antenne bimodale pour un poste radiotelephonique mobile - Google Patents

Antenne bimodale pour un poste radiotelephonique mobile Download PDF

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Publication number
WO1998010483A1
WO1998010483A1 PCT/DE1997/001931 DE9701931W WO9810483A1 WO 1998010483 A1 WO1998010483 A1 WO 1998010483A1 DE 9701931 W DE9701931 W DE 9701931W WO 9810483 A1 WO9810483 A1 WO 9810483A1
Authority
WO
WIPO (PCT)
Prior art keywords
gsm
dect
mobile radio
antenna
dual
Prior art date
Application number
PCT/DE1997/001931
Other languages
German (de)
English (en)
Inventor
Gerhard Zeller
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1998010483A1 publication Critical patent/WO1998010483A1/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
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter
    • 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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • 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

Definitions

  • the invention relates to a dual-mode mobile radio device with a GSM radio device and a DECT radio device for wireless connection to a GSM and a DECT mobile radio system.
  • Digital data can be exchanged between the subscribers of a mobile radio network or mobile radio system.
  • the mobile radio system can be designed in accordance with the GSM standard (radio transmission system in accordance with the recommendations of the CEPT subcommittee Group Special Mobile or Global System for Mobile Communication, GSM) or in accordance with the DECT standard (Digital European Cordless Telecommunication, DECT).
  • GSM radio transmission system in accordance with the recommendations of the CEPT subcommittee Group Special Mobile or Global System for Mobile Communication, GSM
  • DECT Digital European Cordless Telecommunication, DECT
  • the exchanged digital data can be digitized voice signals, data for fax communication or more generally data for stationary or mobile data processing systems, such as personal computers or notebooks.
  • a so-called dual mode mobile radio device can have a GSM and a DECT system.
  • the radio traffic is currently carried out with a GSM mobile radio system in the frequency band from 890 to 950 MHz with a cell size from 1 to 30 km and with a DECT mobile radio system in the frequency band from 1880 to 1900 MHz with a cell size of up to 500 meters.
  • the small cell system of the DECT mobile radio system is preferably operated inside buildings.
  • a dual-mode mobile device two antennas with different lengths are installed.
  • the advantage of using two antennas is that there is little mutual interference between the two antenna connections.
  • the optimal antenna length can also be provided for each mobile radio system.
  • the invention is based on the object of specifying a dual-mode mobile radio device in which the costs and the space required for accommodating the antennas are reduced.
  • the mobile radio device allows a cheaper device design.
  • mutual field influence when using a single antenna is excluded.
  • FIGS. 2 and 3 show the radiation characteristics in the GSM and in the DECT mobile radio system.
  • FIG. 1 shows the circuit blocks of a dual-mode mobile radio MF necessary for understanding the invention.
  • the mobile radio device MF has a GSM system GS and a DECT system DS.
  • these two systems GS and DS are accommodated, for example, on two separate modules.
  • the GSM system GS has a GSM radio device GFE.
  • the DECT system DS has a DECT radio device DFE.
  • Further circuit blocks of a mobile radio device such as the logic circuit for signal processing and control of the mobile radio device MF, a user interface with a keyboard and a display device are of secondary importance for the invention and are not shown in the drawing.
  • the dual-mode mobile radio MF has a single antenna A.
  • the antenna A is arranged, for example, between the two modules for the GSM system GS and the DECT system DS.
  • the base point of antenna A is connected via two networks, a so-called duplexer, to the GSM radio device GFE and to the DECT radio device DFE.
  • the duplexer DP has a GSM adapter circuit GAS and a DECT blocking circuit DSS.
  • the GS radio device GFE is connected to the base point of the antenna A via these two networks.
  • the duplexer DP has a DECT adapter circuit DAS and a GSM blocking circuit GSS. Is over these two networks
  • DECT radio device DFE connected to the base of antenna A.
  • the antenna adaptation of the DECT output of antenna A i.e. the GSM blocking circuit DSS and the DECT adapter circuit DAS are arranged on the module of the DECT system DS.
  • Analogue are the antenna adaptation of the GSM output of antenna A, i.e. the DECT blocking circuit DSS and the GSM adapter circuit GAS are arranged on the module of the GSM system GS.
  • the antenna A has a length of ⁇ / 2 for the GSM system.
  • the radiation characteristic of the ⁇ / 2 antenna A for the GSM system GS is shown in FIG. 2.
  • the DECT system DS For the DECT system DS, this results in a length of ⁇ for the antenna A.
  • the radiation characteristic of the ⁇ antenna A in the DECT range is shown in FIG. 3. Since the DECT mobile radio system is mainly used in closed rooms, more reflections can be expected, which compensate for the unfavorable radiation characteristics of the ⁇ antenna A.
  • the length of the antenna A of the dual-mode mobile device MF is therefore optimized for the 900 MHz range of the GSM mobile radio system, with hardly any losses being incurred in the 1900 MHz range of the DECT mobile radio system due to the spatial reflections that occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

L'invention concerne un poste radiotéléphonique mobile (MF) bimodal comprenant un dispositif radio GSM (GFE) et un dispositif radio DECT (DFE) pour la connexion sans fil sur des systèmes radiotéléphoniques mobiles dont les gammes de longueurs d'onde destinées au trafic radio diffèrent approximativement d'un facteur de deux. Selon l'invention, une seule antenne (A) est prévue pour les deux systèmes radiotéléphoniques mobiles, la longueur de l'antenne correspondant à la moitié de la longueur d'onde du système radiotéléphonique mobile GSM. L'antenne (A) est reliée au dispositif radio respectif (GFE, DFE) par l'intermédiaire d'un duplexeur.
PCT/DE1997/001931 1996-09-04 1997-09-03 Antenne bimodale pour un poste radiotelephonique mobile WO1998010483A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19635896 1996-09-04
DE19635896.5 1996-09-04

Publications (1)

Publication Number Publication Date
WO1998010483A1 true WO1998010483A1 (fr) 1998-03-12

Family

ID=7804616

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/001931 WO1998010483A1 (fr) 1996-09-04 1997-09-03 Antenne bimodale pour un poste radiotelephonique mobile

Country Status (1)

Country Link
WO (1) WO1998010483A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0829915A2 (fr) * 1996-09-11 1998-03-18 Lk-Products Oy Dispositif de filtrage d'antenne et appareil de communication radio à double mode

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4792939A (en) * 1986-01-24 1988-12-20 Hitachi Denshi Kabushiki Kaisha Duplex radio communication transceiver
GB2239355A (en) * 1989-12-22 1991-06-26 Yokowo Seisakusho Kk Antenna device shared by three kinds of waves
GB2271487A (en) * 1992-10-09 1994-04-13 Maxon Systems Inc Cordless telephone
US5406296A (en) * 1992-05-11 1995-04-11 Harada Kogyo Kabushiki Kaisha Three-wave antenna for vehicles
EP0719064A2 (fr) * 1994-12-23 1996-06-26 Nokia Mobile Phones Ltd. Appareil radiotéléphonique multimode

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4792939A (en) * 1986-01-24 1988-12-20 Hitachi Denshi Kabushiki Kaisha Duplex radio communication transceiver
GB2239355A (en) * 1989-12-22 1991-06-26 Yokowo Seisakusho Kk Antenna device shared by three kinds of waves
US5406296A (en) * 1992-05-11 1995-04-11 Harada Kogyo Kabushiki Kaisha Three-wave antenna for vehicles
GB2271487A (en) * 1992-10-09 1994-04-13 Maxon Systems Inc Cordless telephone
EP0719064A2 (fr) * 1994-12-23 1996-06-26 Nokia Mobile Phones Ltd. Appareil radiotéléphonique multimode

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JASIK,H.: "Antenna Engineering Handbook", 1975, MCGRAW-HILL, NEW YORK, US, XP002050957 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0829915A2 (fr) * 1996-09-11 1998-03-18 Lk-Products Oy Dispositif de filtrage d'antenne et appareil de communication radio à double mode
EP0829915A3 (fr) * 1996-09-11 2000-04-05 Lk-Products Oy Dispositif de filtrage d'antenne et appareil de communication radio à double mode
US6185434B1 (en) 1996-09-11 2001-02-06 Lk-Products Oy Antenna filtering arrangement for a dual mode radio communication device

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