ATE264022T1 - Frequenznachlaufschleife und verfahren zum frquenznachlaufen - Google Patents

Frequenznachlaufschleife und verfahren zum frquenznachlaufen

Info

Publication number
ATE264022T1
ATE264022T1 AT00916884T AT00916884T ATE264022T1 AT E264022 T1 ATE264022 T1 AT E264022T1 AT 00916884 T AT00916884 T AT 00916884T AT 00916884 T AT00916884 T AT 00916884T AT E264022 T1 ATE264022 T1 AT E264022T1
Authority
AT
Austria
Prior art keywords
frequency tracking
frequency
tracking loop
frequency offset
mixer
Prior art date
Application number
AT00916884T
Other languages
English (en)
Inventor
Andrew John Aftelak
Original Assignee
Motorola Ltd
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 Motorola Ltd filed Critical Motorola Ltd
Application granted granted Critical
Publication of ATE264022T1 publication Critical patent/ATE264022T1/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
    • H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
AT00916884T 1999-02-26 2000-02-25 Frequenznachlaufschleife und verfahren zum frquenznachlaufen ATE264022T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9904437A GB2347286B (en) 1999-02-26 1999-02-26 Frequency tracking loop and method of frequency tracking
PCT/EP2000/001734 WO2000051237A1 (en) 1999-02-26 2000-02-25 Frequency tracking loop and method of frequency tracking

Publications (1)

Publication Number Publication Date
ATE264022T1 true ATE264022T1 (de) 2004-04-15

Family

ID=10848551

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00916884T ATE264022T1 (de) 1999-02-26 2000-02-25 Frequenznachlaufschleife und verfahren zum frquenznachlaufen

Country Status (8)

Country Link
US (1) US7027535B1 (de)
EP (1) EP1157464B1 (de)
AT (1) ATE264022T1 (de)
AU (1) AU763428B2 (de)
DE (1) DE60009678T2 (de)
DK (1) DK1157464T3 (de)
GB (1) GB2347286B (de)
WO (1) WO2000051237A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10040222A1 (de) * 2000-08-17 2002-02-28 Marconi Comm Gmbh Verfahren zum Betreiben eines Nachrichten-Empfängers
DE60125506T2 (de) * 2001-02-26 2007-10-04 Juniper Networks, Inc., Sunnyvale Schätzung eines Frequenzversatzes, zur Anwendung bei kurzen Datenbursts
US7580390B2 (en) * 2001-11-26 2009-08-25 Qualcomm Incorporated Reducing handover frequency error
KR100653181B1 (ko) * 2005-12-07 2006-12-05 한국전자통신연구원 주파수 옵셋 보상 기능을 가지는 넌­코히런트 동기직접변환 수신 장치
US8731074B2 (en) * 2008-09-17 2014-05-20 Harris Corporation Communications device using measured frequency offset over time to adjust phase and frequency tracking
US9680485B2 (en) * 2012-06-28 2017-06-13 Intel Deutschland Gmbh Automatic frequency control
US9191953B2 (en) 2012-09-21 2015-11-17 Qualcomm Incorporated Frequency tracking loops in wireless network
TWI477081B (zh) * 2012-11-30 2015-03-11 Univ Nat Taiwan 頻率追蹤電路及其方法
CN110445735B (zh) * 2019-07-24 2022-04-01 南京理工大学 基于信号回溯的突发短数据载波同步方法

Family Cites Families (20)

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Publication number Priority date Publication date Assignee Title
FR2336005A1 (fr) * 1975-12-18 1977-07-15 Ibm France Filtre numerique auto-adaptatif
NO790496L (no) * 1978-02-27 1979-08-28 Schlumberger Technology Corp Fremgangsmaate og apparat for demodulering av signaler i et system for logging under boring
US4243941A (en) * 1978-12-07 1981-01-06 Motorola, Inc. Digital signal receiver having a dual bandwidth tracking loop
US4348772A (en) * 1979-11-26 1982-09-07 Bell Telephone Laboratories, Incorporated Frequency stabilization circuit for a local oscillator
JPS5793704A (en) * 1980-12-03 1982-06-10 Alps Electric Co Ltd Fm demodulation circuit
US4506233A (en) * 1982-06-28 1985-03-19 General Electric Company Bandwidth control circuit for a phase locked loop
DE3579591D1 (de) * 1984-11-22 1990-10-11 Devon County Council Daten-modulator-demodulatorsystem.
EP0211995B1 (de) * 1985-08-28 1989-11-15 International Business Machines Corporation Verfahren und Vorrichtung, um die Anwesenheit eines Festfolgesignals in einem Modem-Empfänger festzustellen
US4691176A (en) * 1986-03-17 1987-09-01 General Electric Company Adaptive carrier tracking circuit
DE4001592A1 (de) * 1989-10-25 1991-05-02 Philips Patentverwaltung Empfaenger fuer digitales uebertragungssystem
US5331299A (en) * 1990-02-23 1994-07-19 Massachusetts Institute Of Technology Adaptive tracking notch filter system
US5631587A (en) * 1994-05-03 1997-05-20 Pericom Semiconductor Corporation Frequency synthesizer with adaptive loop bandwidth
US5513221A (en) * 1994-05-19 1996-04-30 Hughes Aircraft Company Doppler bandwidth dependent estimation of a communications channel
US5822373A (en) * 1995-08-17 1998-10-13 Pittway Corporation Method and apparatus for optimization of wireless communications
US5894592A (en) * 1997-04-17 1999-04-13 Motorala, Inc. Wideband frequency synthesizer for direct conversion transceiver
US6226336B1 (en) * 1998-02-20 2001-05-01 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for detecting a frequency synchronization signal
US6476681B1 (en) * 1998-08-11 2002-11-05 Denso International America, Inc. Adjustable bandwidth phase locked loop with fast settling time
KR100310294B1 (ko) * 1998-08-26 2001-11-15 오길록 결정-지향반송파복원장치
US6324228B1 (en) * 1998-12-30 2001-11-27 International Business Machines Corporation Method and apparatus for robust frequency tracking in strong channel interference using carrier signal relative strength and frequency error
US20010055348A1 (en) * 2000-03-31 2001-12-27 Anderson Christopher L. Sequential quadrant demodulation of digitally modulated radio signals

Also Published As

Publication number Publication date
DE60009678D1 (de) 2004-05-13
EP1157464A1 (de) 2001-11-28
DE60009678T2 (de) 2004-08-19
GB2347286A (en) 2000-08-30
US7027535B1 (en) 2006-04-11
AU3807500A (en) 2000-09-14
AU763428B2 (en) 2003-07-24
GB9904437D0 (en) 1999-04-21
WO2000051237A1 (en) 2000-08-31
DK1157464T3 (da) 2004-08-02
GB2347286B (en) 2001-04-18
EP1157464B1 (de) 2004-04-07

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Legal Events

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