BR9908440A - Método e equipamento para converter para recepção sinais transmitidos usando-se uma pluralidade de formatos de modulação para uma faixa de freguência intermediária comum - Google Patents

Método e equipamento para converter para recepção sinais transmitidos usando-se uma pluralidade de formatos de modulação para uma faixa de freguência intermediária comum

Info

Publication number
BR9908440A
BR9908440A BR9908440-6A BR9908440A BR9908440A BR 9908440 A BR9908440 A BR 9908440A BR 9908440 A BR9908440 A BR 9908440A BR 9908440 A BR9908440 A BR 9908440A
Authority
BR
Brazil
Prior art keywords
frequency range
reception
common intermediate
intermediate frequency
frequency
Prior art date
Application number
BR9908440-6A
Other languages
English (en)
Inventor
Steven C Ciccarelli
Saed G Younis
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR9908440A publication Critical patent/BR9908440A/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
    • H04B1/06—Receivers
    • H04B1/16—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
    • 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
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transceivers (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

Patente de Invenção: MéTODO E EQUIPAMENTO PARA CONVERTER PARA RECEPçãO SINAIS TRANSMITIDOS USANDO-SE UMA PLURALIDADE DE FORMATOS DE MODULAçãO PARA UMA FAIXA DE FREQuêNCIA INTERMEDIáRIA COMUM. Um receptor (2) que converte para recepção sinais de alimentação modulados pelo uso de um primeiro, segundo, terceiro e quarto formatos de modulação para uma faixa intermediária comum de freq³ências. Os primeiro e segundo formatos de modulação são transmitidos para o receptor em uma primeira faixa de freq³ências, o terceiro formato de modulação é transmitido para o receptor em uma segunda faixa de freq³ências e o quarto formato de modulação é transmitido para o receptor em uma terceira faixa de freq³ências. Os sinais de alimentação são providos a um primeiro, segundo e terceiro filtros de seleção de banda (10, 12, 14) que selecionam respectivamente primeira, segunda e terceira faixas de freq³ências. Um primeiro conversor para recepção (20) é acoplado a uma saída do primeiro filtro de seleção de banda e converte para recepção sinais a partir da primeira faixa de freq³ências para a faixa intermediária comum de freq³ências. Um segundo conversor para recepção (24) é seletivamente acoplado por meio de um comutador (16) a uma saída do segundo filtro de seleção de banda (12) ou a uma saída do terceiro filtro de seleção de banda (14) e converte para recepção sinais a partir da segunda faixa de freq³ências ou da terceira faixa de freq³ências para a faixa intermediária comum de freq³ências. O segundo conversor para recepção possui uma entrada ou alimentação acoplada a um circuito de duplicação de freq³ências (26). Circuitos de comutação (28) acoplam seletivamente um dentre um primeiro sinal oscilante (30) proveniente de um oscilador controlado por voltagem (VCO - Voltage Controlled Oscilator) (34) possuindo uma faixa de freq³ências VCO, ou um segundo sinal oscilante (32) a uma segunda freq³ência que se encontra fora da faixa de freq³ência VCO para uma alimentação do primeiro conversor para recepção (20) e uma alimentação do circuito de duplicação de freq³ência (26).
BR9908440-6A 1998-03-02 1999-03-02 Método e equipamento para converter para recepção sinais transmitidos usando-se uma pluralidade de formatos de modulação para uma faixa de freguência intermediária comum BR9908440A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US7652098P 1998-03-02 1998-03-02
US09/259,242 US6359940B1 (en) 1998-03-02 1999-02-26 Method and apparatus for downconverting signals transmitted using a plurality of modulation formats to a common intermediate frequency range
PCT/US1999/004545 WO1999045654A1 (en) 1998-03-02 1999-03-02 Method and apparatus for downconverting signals transmitted using a plurality of modulation formats to a common intermediate frequency range

Publications (1)

Publication Number Publication Date
BR9908440A true BR9908440A (pt) 2000-12-05

Family

ID=26758203

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9908440-6A BR9908440A (pt) 1998-03-02 1999-03-02 Método e equipamento para converter para recepção sinais transmitidos usando-se uma pluralidade de formatos de modulação para uma faixa de freguência intermediária comum

Country Status (14)

Country Link
US (1) US6359940B1 (pt)
EP (1) EP1060572B1 (pt)
JP (2) JP4354637B2 (pt)
KR (1) KR100581453B1 (pt)
CN (2) CN100377498C (pt)
AU (1) AU769051B2 (pt)
BR (1) BR9908440A (pt)
CA (1) CA2321582C (pt)
DE (1) DE69929680T2 (pt)
ES (1) ES2260904T3 (pt)
HK (2) HK1033718A1 (pt)
IL (1) IL138019A (pt)
RU (1) RU2003133453A (pt)
WO (1) WO1999045654A1 (pt)

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Also Published As

Publication number Publication date
ES2260904T3 (es) 2006-11-01
KR20010041539A (ko) 2001-05-25
CN1521952A (zh) 2004-08-18
CN100377498C (zh) 2008-03-26
AU769051B2 (en) 2004-01-15
CA2321582C (en) 2009-11-17
EP1060572A1 (en) 2000-12-20
HK1068470A1 (en) 2005-04-29
IL138019A (en) 2005-11-20
JP2009260978A (ja) 2009-11-05
US6359940B1 (en) 2002-03-19
HK1033718A1 (en) 2001-09-14
JP2002506314A (ja) 2002-02-26
CN1292172A (zh) 2001-04-18
AU3065699A (en) 1999-09-20
CA2321582A1 (en) 1999-09-10
JP4354637B2 (ja) 2009-10-28
KR100581453B1 (ko) 2006-05-23
IL138019A0 (en) 2001-10-31
DE69929680T2 (de) 2006-11-02
RU2003133453A (ru) 2005-04-20
WO1999045654A1 (en) 1999-09-10
CN1158784C (zh) 2004-07-21
EP1060572B1 (en) 2006-02-01
DE69929680D1 (de) 2006-04-13

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

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B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.