BR9808039A - Receptor, misturador de quadratura de saìda dupla, processo para conversão descendente de sinais de informação de rádio, transmissor, estações móvel e base, sistema de comunicação de múltiplos transportadores,e, transceptor de múltiplos transportadores integrados. - Google Patents

Receptor, misturador de quadratura de saìda dupla, processo para conversão descendente de sinais de informação de rádio, transmissor, estações móvel e base, sistema de comunicação de múltiplos transportadores,e, transceptor de múltiplos transportadores integrados.

Info

Publication number
BR9808039A
BR9808039A BR9808039-3A BR9808039A BR9808039A BR 9808039 A BR9808039 A BR 9808039A BR 9808039 A BR9808039 A BR 9808039A BR 9808039 A BR9808039 A BR 9808039A
Authority
BR
Brazil
Prior art keywords
signal
carrier
produce
converted
quadrature
Prior art date
Application number
BR9808039-3A
Other languages
English (en)
Inventor
Jacobus Cornelis Haartsen
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 BR9808039A publication Critical patent/BR9808039A/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
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Transceivers (AREA)

Abstract

"RECEPTOR, MISTURADOR DE QUADRATURA DE SAìDA DUPLA, PROCESSO PARA CONVERSãO DESCENDENTE DE SINAIS DE INFORMAçãO DE RáDIO, TRANSMISSOR, ESTAçõES MóVEL E BASE, SISTEMA DE COMUNICAçãO DE MúLTIPLOS TRANSPORTADORES, E, TRANSCEPTOR DE MúLTIPLOS TRANSPORTADORES INTEGRADOS". Um sistema de rádio de múltiplos transportadores no qual pares de subtransportadores são posicionados na freq³ência de forma que cada subtransportador em um par seja a imagem do outro subtransportador no par. Pela criação de cada subtransportador à imagem do outro subtransportador, o sistema de rádio da presente invenção permite uma implementação de transceptor de IF baixo integrada. Em um modalidade ilustrativa, um transceptor de múltiplos transportadores inclui um receptor integrado compreendendo um primeiro misturador para misturar um sinal de entrada com um sinal de oscilador local para produzir um sinal convertido descendentemente em fase. Adicionalmente, um primeiro alternador de fase alterna a fase do sinal de oscilador local para produzir um sinal de oscilador local de quadratura, e um segundo misturador mistura o sinal de entrada com o sinal de oscilador local de quadratura para produzir um sinal convertido descendentemente de quadratura. Depois disso, um segundo alternador de fase alterna a fase, ou gira, o sinal convertido descendentemente de quadratura para produzir um sinal convertido descendentemente de quadratura girado. Um somador soma o sinal convertido descendentemente em fase o sinal convertido descendentemente de quadratura girado para produzir um sinal de saída de detecção de banda superior, e um substrator subtrai o sinal convertido descendentemente de quadratura girado do sinal convertido descendentemente em fase para produzir um sinal de saída de detecção de banda inferior. O transceptor de múltiplos transportadores ilustrativos também inclui um transmissor integrado compatível para a geração de sinais múltiplos transportadores adequados.
BR9808039-3A 1997-03-21 1998-03-20 Receptor, misturador de quadratura de saìda dupla, processo para conversão descendente de sinais de informação de rádio, transmissor, estações móvel e base, sistema de comunicação de múltiplos transportadores,e, transceptor de múltiplos transportadores integrados. BR9808039A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/821,443 US6081697A (en) 1997-03-21 1997-03-21 Multi-carrier radio system and radio transceiver implementation
PCT/SE1998/000521 WO1998043364A1 (en) 1997-03-21 1998-03-20 A multi-carrier radio system and radio transceiver implementation

Publications (1)

Publication Number Publication Date
BR9808039A true BR9808039A (pt) 2000-03-08

Family

ID=25233431

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9808039-3A BR9808039A (pt) 1997-03-21 1998-03-20 Receptor, misturador de quadratura de saìda dupla, processo para conversão descendente de sinais de informação de rádio, transmissor, estações móvel e base, sistema de comunicação de múltiplos transportadores,e, transceptor de múltiplos transportadores integrados.

Country Status (11)

Country Link
US (1) US6081697A (pt)
EP (1) EP0968570B1 (pt)
CN (1) CN1192494C (pt)
AU (1) AU6531098A (pt)
BR (1) BR9808039A (pt)
DE (1) DE69835200D1 (pt)
EE (1) EE9900437A (pt)
HK (1) HK1028500A1 (pt)
MY (1) MY120727A (pt)
SA (1) SA98190031A (pt)
WO (1) WO1998043364A1 (pt)

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Also Published As

Publication number Publication date
MY120727A (en) 2005-11-30
SA98190031A (ar) 2005-12-03
EE9900437A (et) 2000-04-17
US6081697A (en) 2000-06-27
EP0968570B1 (en) 2006-07-12
DE69835200D1 (de) 2006-08-24
WO1998043364A1 (en) 1998-10-01
AU6531098A (en) 1998-10-20
HK1028500A1 (en) 2001-02-16
CN1257623A (zh) 2000-06-21
CN1192494C (zh) 2005-03-09
EP0968570A1 (en) 2000-01-05

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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 9A E 10A ANUIDADES.

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 PUBLICADO NA RPI 1971 DE 14/10/2008.