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BR9909014A - Circuito demodulador e processo para sintonizar um circuito demodulador - Google Patents

Circuito demodulador e processo para sintonizar um circuito demodulador

Info

Publication number
BR9909014A
BR9909014A BR9909014-7A BR9909014A BR9909014A BR 9909014 A BR9909014 A BR 9909014A BR 9909014 A BR9909014 A BR 9909014A BR 9909014 A BR9909014 A BR 9909014A
Authority
BR
Brazil
Prior art keywords
demodulator circuit
drift
signal
tuning
frequency
Prior art date
Application number
BR9909014-7A
Other languages
English (en)
Inventor
Sven Mattisson
Jacobus 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 BR9909014A publication Critical patent/BR9909014A/pt

Links

Classifications

    • 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
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
    • H03D3/005—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

"CIRCUITO DEMODULADOR E PROCESSO PARA SINTONIZAR UM CIRCUITO DEMODULADOR". Um circuito demodulador para demodular um sinal de entrada modulado em frequência compreende dispositivo de filtro 10 e dispositivo detector 14 para receber um sinal de entrada modulado em frequência e para fornecer um sinal de saída demodulado, dispositivo sintonizador 19 para sintonizar as características de frequência do dispositivo de filtro e do dispositivo detector, e dispositivo estimador de desvio de CC 18 que é operável para estimar o desvio de CC do sinal de saída demodulado e produzir um sinal desviado que representa o desvio de CC estimado e para fornecer o sinal desviado ao dispositivo sintonizador. O dispositivo sintonizador é operável para sintonizar as características de frequência do dispositivo de filtro de dispositivo detector dependendo do sinal desviado.
BR9909014-7A 1998-03-24 1999-03-19 Circuito demodulador e processo para sintonizar um circuito demodulador BR9909014A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9806205A GB2335809B (en) 1998-03-24 1998-03-24 Demodulator circuits
PCT/EP1999/001848 WO1999049569A1 (en) 1998-03-24 1999-03-19 Demoludator circuits

Publications (1)

Publication Number Publication Date
BR9909014A true BR9909014A (pt) 2000-11-28

Family

ID=10829097

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9909014-7A BR9909014A (pt) 1998-03-24 1999-03-19 Circuito demodulador e processo para sintonizar um circuito demodulador

Country Status (9)

Country Link
US (1) US6104238A (pt)
EP (1) EP1066675A1 (pt)
JP (1) JP4329975B2 (pt)
CN (1) CN1294776A (pt)
AU (1) AU2934699A (pt)
BR (1) BR9909014A (pt)
EE (1) EE200000552A (pt)
GB (1) GB2335809B (pt)
WO (1) WO1999049569A1 (pt)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6931051B2 (en) * 2000-03-01 2005-08-16 Texas Instruments Incorporated Frequency hopping wireless communication system with filtered adaptive slicer
WO2002033920A1 (en) * 2000-10-16 2002-04-25 Telefonaktiebolaget Lm Ericsson (Publ) Dc-offset compensation
JP4321959B2 (ja) 2000-10-17 2009-08-26 Ｏｋｉセミコンダクタ株式会社 信号補償回路及び復調回路
GB2370928B (en) * 2001-01-09 2004-08-25 Ericsson Telefon Ab L M Radio receiver
JP4460182B2 (ja) 2001-03-14 2010-05-12 Ｏｋｉセミコンダクタ株式会社 信号補償回路及び復調回路
US6771720B1 (en) * 2001-03-30 2004-08-03 Skyworks Solutions, Inc. Amplification control scheme for a receiver
US6724247B2 (en) 2001-09-13 2004-04-20 Telefonaktiebolaget Lm Ericsson (Publ) FM demodulator having DC offset compensation
GB2380078B (en) * 2001-09-13 2005-01-19 Ericsson Telefon Ab L M FM demodulator having DC offset compensation
AU2003238488A1 (en) * 2002-02-01 2003-09-02 Koninklijke Philips Electronics N.V. Additive dc component detection included in an input burst signal
US9071417B2 (en) * 2002-02-12 2015-06-30 Broadcom Corporation Method and system for packet synchronization
US7599662B2 (en) * 2002-04-29 2009-10-06 Broadcom Corporation Method and system for frequency feedback adjustment in digital receivers
EP1376853B1 (en) * 2002-02-18 2009-01-21 Freescale Semiconductor, Inc. Apparatus and method for tuning a filter
US7046744B2 (en) * 2002-03-15 2006-05-16 Agency For Science, Technology And Research Method and apparatus for frequency offset estimation, and system utilizing same
JP3683550B2 (ja) * 2002-04-22 2005-08-17 シャープ株式会社 二値化回路、無線通信装置および二値化方法
JP3519075B2 (ja) 2002-06-13 2004-04-12 沖電気工業株式会社 再生データ信号生成装置
JP2004064196A (ja) 2002-07-25 2004-02-26 Renesas Technology Corp スライス回路
JP4307906B2 (ja) * 2003-05-22 2009-08-05 Ｏｋｉセミコンダクタ株式会社 復調回路および光受信回路
US7187291B2 (en) * 2004-02-05 2007-03-06 Tri-Tronics, Inc. Control system and method for remote launchers
US7319731B2 (en) * 2004-02-05 2008-01-15 Broadcom Corporation High precision continuous time gmC BPF tuning
US7826419B2 (en) 2006-04-27 2010-11-02 Motorola Mobility, Inc. Method and system to improve transmission and receipt of channel descriptors
CA2709655C (en) 2006-10-16 2016-04-05 Thx Ltd. Loudspeaker line array configurations and related sound processing
EP2056451A3 (en) 2007-10-16 2011-11-30 THX Ltd Efficient power amplifier
JP5670355B2 (ja) * 2009-02-25 2015-02-18 ティ エイチ エックス リミテッド 低損失増幅器
US9484860B2 (en) 2013-03-12 2016-11-01 Thx Ltd. Tracking power supply with increased boost capability

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336613A (en) * 1977-06-30 1982-06-22 Texas Instruments Incorporated Charge coupled device filters and modems incorporating such filters
DE3438286A1 (de) * 1984-10-16 1986-04-17 Hansen/Catito Elektronik, 1000 Berlin Verfahren und schaltungsanordnung zum umsetzen frequenzmodulierter signale ueber mindestens eine zwischenfrequenz in niederfrequenzsignale
DE3606250A1 (de) * 1986-02-24 1987-08-27 Hansen Elektronic & Co Verfahren und vorrichtung zum umsetzen frequenzmodulierter signale ueber mindestens eine zwischenfrequenz in niederfrequenzsignale
GB2214742A (en) * 1988-01-18 1989-09-06 Plessey Co Plc Noise-controlled frequency-modulation signal detector
US5053717A (en) * 1989-10-05 1991-10-01 Motorola, Inc. FSK demodulator
US5175749A (en) * 1991-01-25 1992-12-29 Motorola, Inc. Apparatus and method for dc offset correction in a receiver
US5663989A (en) * 1993-10-28 1997-09-02 Plessey Semiconductors Limited Control arrangements for digital radio receivers
GB2283871B (en) * 1993-10-28 1998-01-21 Plessey Semiconductors Ltd Control arrangements for digital radio receivers

Also Published As

Publication number Publication date
GB2335809A (en) 1999-09-29
JP2002508613A (ja) 2002-03-19
US6104238A (en) 2000-08-15
EP1066675A1 (en) 2001-01-10
GB9806205D0 (en) 1998-05-20
GB2335809B (en) 2001-09-12
EE200000552A (et) 2002-04-15
JP4329975B2 (ja) 2009-09-09
AU2934699A (en) 1999-10-18
CN1294776A (zh) 2001-05-09
WO1999049569A1 (en) 1999-09-30

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTA A 5O, 6O, 7O E 8O 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 8.6 PUBLICADO NA RPI 1911 DE 21/08/2007.