BRPI0407725A - método, desmodulador e receptor para processar um sinal de rádio de am - Google Patents

método, desmodulador e receptor para processar um sinal de rádio de am

Info

Publication number
BRPI0407725A
BRPI0407725A BRPI0407725-3A BRPI0407725A BRPI0407725A BR PI0407725 A BRPI0407725 A BR PI0407725A BR PI0407725 A BRPI0407725 A BR PI0407725A BR PI0407725 A BRPI0407725 A BR PI0407725A
Authority
BR
Brazil
Prior art keywords
signal
demodulated
processing
radio signal
demodulator
Prior art date
Application number
BRPI0407725-3A
Other languages
English (en)
Inventor
Brian William Kroeger
Original Assignee
Ibiquity Digital Corp
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 Ibiquity Digital Corp filed Critical Ibiquity Digital Corp
Publication of BRPI0407725A publication Critical patent/BRPI0407725A/pt
Publication of BRPI0407725B1 publication Critical patent/BRPI0407725B1/pt

Links

Classifications

    • 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
    • H03D1/2245—Homodyne or synchrodyne circuits using two quadrature channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/02—Details
    • H03D1/04—Modifications of demodulators to reduce interference by undesired signals
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

"MéTODO, DESMODULADOR E RECEPTOR PARA PROCESSAR UM SINAL DE RáDIO DE AM". Um método para processar um sinal de rádio de AM inclui a etapa de receber um sinal de rádio de AM incluindo uma porção de banda lateral superior e uma porção de banda lateral inferior, desmodular a porção de banda lateral superior e a porção de banda lateral inferior para produzir um sinal de banda lateral superior desmodulado e um sinal de banda lateral inferior desmodulado, ponderar o sinal de banda lateral superior desmodulado e o sinal de banda lateral inferior desmodulado em resposta à potência de ruído para produzir um sinal de banda lateral superior desmodulado ponderado e um sinal de banda lateral inferior desmodulado ponderado, e combinar o sinal de banda lateral superior desmodulado ponderado e o sinal de banda lateral inferior desmodulado ponderado para produzir um sinal de saída. Desmoduladores que processam sinais de rádio de AM de acordo com o método, e receptores incorporando os desmoduladores, também são incluídos.
BRPI0407725A 2003-02-24 2004-01-29 método e desmodulador para processar um sinal de rádio de am BRPI0407725B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/373,484 US7127008B2 (en) 2003-02-24 2003-02-24 Coherent AM demodulator using a weighted LSB/USB sum for interference mitigation
PCT/US2004/002549 WO2004077667A2 (en) 2003-02-24 2004-01-29 Coherent am demodulator using a weighted lsb/usb sum for interference mitigation

Publications (2)

Publication Number Publication Date
BRPI0407725A true BRPI0407725A (pt) 2006-02-14
BRPI0407725B1 BRPI0407725B1 (pt) 2017-03-28

Family

ID=32868723

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0407725A BRPI0407725B1 (pt) 2003-02-24 2004-01-29 método e desmodulador para processar um sinal de rádio de am

Country Status (16)

Country Link
US (1) US7127008B2 (pt)
EP (1) EP1597820B1 (pt)
JP (1) JP4440255B2 (pt)
KR (1) KR101016876B1 (pt)
CN (1) CN1754308B (pt)
AR (1) AR043262A1 (pt)
AT (1) ATE368325T1 (pt)
AU (1) AU2004214862B2 (pt)
BR (1) BRPI0407725B1 (pt)
CA (1) CA2516767C (pt)
CL (1) CL2004000295A1 (pt)
DE (1) DE602004007770T2 (pt)
MX (1) MXPA05008260A (pt)
RU (1) RU2342772C2 (pt)
TW (1) TWI324001B (pt)
WO (1) WO2004077667A2 (pt)

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Also Published As

Publication number Publication date
US7127008B2 (en) 2006-10-24
RU2005129716A (ru) 2006-01-27
CN1754308B (zh) 2010-05-12
DE602004007770D1 (de) 2007-09-06
CL2004000295A1 (es) 2005-05-20
AR043262A1 (es) 2005-07-20
ATE368325T1 (de) 2007-08-15
EP1597820A4 (en) 2006-05-31
KR101016876B1 (ko) 2011-02-22
RU2342772C2 (ru) 2008-12-27
AU2004214862A1 (en) 2004-09-10
EP1597820A2 (en) 2005-11-23
JP2006518966A (ja) 2006-08-17
CA2516767C (en) 2012-05-22
KR20050105234A (ko) 2005-11-03
CN1754308A (zh) 2006-03-29
CA2516767A1 (en) 2004-09-10
DE602004007770T2 (de) 2008-04-30
US20040165680A1 (en) 2004-08-26
EP1597820B1 (en) 2007-07-25
MXPA05008260A (es) 2005-09-20
TW200428832A (en) 2004-12-16
WO2004077667A2 (en) 2004-09-10
BRPI0407725B1 (pt) 2017-03-28
TWI324001B (en) 2010-04-21
JP4440255B2 (ja) 2010-03-24
AU2004214862B2 (en) 2009-05-07
WO2004077667A3 (en) 2004-12-29

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Legal Events

Date Code Title Description
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 21A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2812 DE 26-11-2024 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.