BR9814662A - Aparelho de transmissão e recepção de rádio, radiotelefone celular de complexidade reduzida, e, aparelho de radiotelefone celular de modo duplo - Google Patents

Aparelho de transmissão e recepção de rádio, radiotelefone celular de complexidade reduzida, e, aparelho de radiotelefone celular de modo duplo

Info

Publication number
BR9814662A
BR9814662A BR9814662-9A BR9814662A BR9814662A BR 9814662 A BR9814662 A BR 9814662A BR 9814662 A BR9814662 A BR 9814662A BR 9814662 A BR9814662 A BR 9814662A
Authority
BR
Brazil
Prior art keywords
radiotelephone
radio transmission
reduced complexity
reception apparatus
dual mode
Prior art date
Application number
BR9814662-9A
Other languages
English (en)
Inventor
Charles Gore
Rodney A Dolman
Paul W Dent
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Publication of BR9814662A publication Critical patent/BR9814662A/pt

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
    • 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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/0057—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • 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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • 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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/006—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
    • 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
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/405—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels

Abstract

"APARELHO DE TRANSMISSãO E RECEPçãO DE RáDIO, RADIOTELEFONE CELULAR DE COMPLEXIDADE REDUZIDA, E, APARELHO DE RADIOTELEFONE CELULAR DE MODO DUPLO" Radiotelefone móvel tendo uma arquitetura simplificada, incluindo um número reduzido de circuitos integrados e um número reduzido de conexões de FR. Um telefone móvel de modo duplo, banda dupla, pode ser construído usando tanto um oscilador de referência de cristal único ou de dois cristais, de modo que taxas de símbolos alternativas, espaçamentos de canais ou espaçamento duplex de transmissão/recepção podem ser obtidos.
BR9814662-9A 1997-11-19 1998-11-03 Aparelho de transmissão e recepção de rádio, radiotelefone celular de complexidade reduzida, e, aparelho de radiotelefone celular de modo duplo BR9814662A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/974,227 US6308048B1 (en) 1997-11-19 1997-11-19 Simplified reference frequency distribution in a mobile phone
PCT/US1998/023214 WO1999026336A1 (en) 1997-11-19 1998-11-03 Simplified reference frequency distribution in a mobile phone

Publications (1)

Publication Number Publication Date
BR9814662A true BR9814662A (pt) 2000-10-03

Family

ID=25521767

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9814662-9A BR9814662A (pt) 1997-11-19 1998-11-03 Aparelho de transmissão e recepção de rádio, radiotelefone celular de complexidade reduzida, e, aparelho de radiotelefone celular de modo duplo

Country Status (11)

Country Link
US (4) US6308048B1 (pt)
EP (1) EP1032972B1 (pt)
JP (1) JP4242559B2 (pt)
KR (2) KR100579680B1 (pt)
CN (1) CN1206804C (pt)
AU (1) AU752021B2 (pt)
BR (1) BR9814662A (pt)
EE (1) EE200000296A (pt)
HK (1) HK1035447A1 (pt)
MY (1) MY120169A (pt)
WO (1) WO1999026336A1 (pt)

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US6125268A (en) 2000-09-26
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EP1032972A1 (en) 2000-09-06
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