BR9812708A - Conversor descendente para converter um sinal modulado de alta frequencia em um sinal de baixa frequência, conversor ascendente para converter um sinal de baixa frequência em um sinal de alta frequencia modulado, equipamentos para reconstruir um sinal de baixa frequência , e para gerar um sinal de alta frequência de um sinal compósito modulado, e, em processos para converter descendentemente um sinal de alta frequência modulado para um sinal de baixa frequência, para converter ascendentemente um sinal de baixa frequência para um sinal de alta frequência, para reconstruir um sinal de baixa frequência de um sinal compósito, e para gerar um sinal de alta frequência de um sinal compósito - Google Patents

Conversor descendente para converter um sinal modulado de alta frequencia em um sinal de baixa frequência, conversor ascendente para converter um sinal de baixa frequência em um sinal de alta frequencia modulado, equipamentos para reconstruir um sinal de baixa frequência , e para gerar um sinal de alta frequência de um sinal compósito modulado, e, em processos para converter descendentemente um sinal de alta frequência modulado para um sinal de baixa frequência, para converter ascendentemente um sinal de baixa frequência para um sinal de alta frequência, para reconstruir um sinal de baixa frequência de um sinal compósito, e para gerar um sinal de alta frequência de um sinal compósito

Info

Publication number
BR9812708A
BR9812708A BR9812708-0A BR9812708A BR9812708A BR 9812708 A BR9812708 A BR 9812708A BR 9812708 A BR9812708 A BR 9812708A BR 9812708 A BR9812708 A BR 9812708A
Authority
BR
Brazil
Prior art keywords
frequency signal
signal
high frequency
low frequency
convert
Prior art date
Application number
BR9812708-0A
Other languages
English (en)
Portuguese (pt)
Inventor
Thorsten Schier
Svante Signell
Original Assignee
Ericsson Telefon Ab L M
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 Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR9812708A publication Critical patent/BR9812708A/pt

Links

Classifications

    • 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
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/24—Homodyne or synchrodyne circuits for demodulation of signals wherein one sideband or the carrier has been wholly or partially suppressed
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0054—Digital filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0066—Mixing
    • H03D2200/0072—Mixing by complex multiplication
    • 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
    • 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
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
  • Amplitude Modulation (AREA)
  • Analogue/Digital Conversion (AREA)
BR9812708-0A 1997-10-03 1998-09-28 Conversor descendente para converter um sinal modulado de alta frequencia em um sinal de baixa frequência, conversor ascendente para converter um sinal de baixa frequência em um sinal de alta frequencia modulado, equipamentos para reconstruir um sinal de baixa frequência , e para gerar um sinal de alta frequência de um sinal compósito modulado, e, em processos para converter descendentemente um sinal de alta frequência modulado para um sinal de baixa frequência, para converter ascendentemente um sinal de baixa frequência para um sinal de alta frequência, para reconstruir um sinal de baixa frequência de um sinal compósito, e para gerar um sinal de alta frequência de um sinal compósito BR9812708A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703617A SE514795C2 (sv) 1997-10-03 1997-10-03 Anordning och förfarande för upp- och nedkonvertering
PCT/SE1998/001726 WO1999018657A2 (en) 1997-10-03 1998-09-28 Down/up-conversion apparatus and method

Publications (1)

Publication Number Publication Date
BR9812708A true BR9812708A (pt) 2000-11-28

Family

ID=20408503

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9812708-0A BR9812708A (pt) 1997-10-03 1998-09-28 Conversor descendente para converter um sinal modulado de alta frequencia em um sinal de baixa frequência, conversor ascendente para converter um sinal de baixa frequência em um sinal de alta frequencia modulado, equipamentos para reconstruir um sinal de baixa frequência , e para gerar um sinal de alta frequência de um sinal compósito modulado, e, em processos para converter descendentemente um sinal de alta frequência modulado para um sinal de baixa frequência, para converter ascendentemente um sinal de baixa frequência para um sinal de alta frequência, para reconstruir um sinal de baixa frequência de um sinal compósito, e para gerar um sinal de alta frequência de um sinal compósito

Country Status (10)

Country Link
US (1) US6611569B1 (enExample)
EP (1) EP1057253B1 (enExample)
JP (1) JP2001519611A (enExample)
CN (1) CN1171379C (enExample)
AU (1) AU9370298A (enExample)
BR (1) BR9812708A (enExample)
CA (1) CA2305134C (enExample)
DE (1) DE69838230T2 (enExample)
SE (1) SE514795C2 (enExample)
WO (1) WO1999018657A2 (enExample)

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Also Published As

Publication number Publication date
CA2305134C (en) 2005-01-25
DE69838230T2 (de) 2008-05-08
US6611569B1 (en) 2003-08-26
CN1273707A (zh) 2000-11-15
EP1057253A2 (en) 2000-12-06
JP2001519611A (ja) 2001-10-23
WO1999018657A3 (en) 1999-06-24
AU9370298A (en) 1999-04-27
SE9703617D0 (sv) 1997-10-03
DE69838230D1 (de) 2007-09-20
SE514795C2 (sv) 2001-04-23
CA2305134A1 (en) 1999-04-15
WO1999018657A2 (en) 1999-04-15
CN1171379C (zh) 2004-10-13
EP1057253B1 (en) 2007-08-08
SE9703617L (sv) 1999-04-04

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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]

Free format text: REFERENTE A 11A E 12A ANUIDADE(S).

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 2077 DE 26/10/2010.