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1. WO2000044102 - IMPROVEMENTS IN OR RELATING TO DUPLEX FILTERING

Publication Number WO/2000/044102
Publication Date 27.07.2000
International Application No. PCT/GB1999/004291
International Filing Date 17.12.1999
Chapter 2 Demand Filed 14.07.2000
IPC
H04B 1/40 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, 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
40Circuits
H04B 1/52 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, 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
40Circuits
50using different frequencies for the two directions of communication
52Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
CPC
H04B 1/005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
005adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
H04B 1/406
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
38Transceivers, 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
40Circuits
403using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
406with more than one transmission mode, e.g. analog and digital modes
H04B 1/52
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
38Transceivers, 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
40Circuits
50using different frequencies for the two directions of communication
52Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
Applicants
  • ROKE MANOR RESEARCH LIMITED [GB/GB]; Old Salisbury Lane Romsey Hampshire SO51 0ZN, GB (AllExceptUS)
  • SMITH, Christopher, Nigel [GB/GB]; GB (UsOnly)
Inventors
  • SMITH, Christopher, Nigel; GB
Agents
  • ALLEN, Derek ; Siemens Shared Services Limited Siemens House Intellectual Property Dept. Oldbury Bracknell, Berkshire RG12 8FZ, GB
  • Allen Derek,; SIEMENS SHARED SERVICES LIMITED Intellectual Property Department Siemens House, Oldburry Braknell, Berkshire RG12 8FZ United Kingdom, GB
Priority Data
9901014.219.01.1999GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVEMENTS IN OR RELATING TO DUPLEX FILTERING
(FR) FILTRAGE DUPLEX AMELIORE
Abstract
(EN)
Described herein is an arrangement (100) for multi-standard duplex filtering for mobile terminals in a telecommunications system. The arrangement (100) comprises a substrate (40) on which a first array (60) of filter elements (62, 64, 66) and a second array (70) of filter elements (72, 74, 76) are formed. The filter elements (62, 64, 66, 72, 74, 76) have different frequency bands in accordance with mobile telecommunications standards. The first array (60) filters an incoming signal received from an antenna (30) and provides an output at port (50) in accordance with a matched frequency band of one of the standards. The second array (70) filters a signal to be transmitted applied to port (52) in accordance with a matched frequency band of one of the standards prior to transmission through antenna (30). The filter elements (62, 64, 66, 72, 74, 76) may comprise surface acoustic wave devices formed on a single substrate.
(FR)
L'invention concerne un dispositif (100) de filtrage duplex multistandard pour des postes téléphoniques mobiles dans un réseau de télécommunications. Ce dispositif (100) est composé d'un substrat (40) sur lequel sont placés un premier groupe (60) d'éléments filtrants (62, 64, 66) et un deuxième groupe d'éléments filtrants (72, 74, 76). Ces éléments filtrants (62, 64, 66, 72, 74, 76) possèdent différentes bandes de fréquence en fonction des normes de télécommunications mobiles. Le premier groupe (60) filtre un signal d'arrivée reçu depuis une antenne (30) et produit une sortie au niveau d'un accès (50) d'après une bande de fréquence correspondant à une des normes. Le deuxième groupe (70) filtre un signal à émettre appliqué à l'accès (52) d'après une bande de fréquence correspondant à une des normes préalablement à la transmission par l'intermédiaire de l'antenne (30). Les éléments filtrants (62, 64, 66, 72, 74, 76) peuvent comprendre des composants d'ondes acoustiques de surface situés sur un seul substrat.
Also published as
ININ/PCT/2001/986/CHE
Latest bibliographic data on file with the International Bureau