DK110491A - Fremgangsmaade og apparat til digital automatisk frekvenskontrol (afc) i forbindelse med rene sinusboelger - Google Patents

Fremgangsmaade og apparat til digital automatisk frekvenskontrol (afc) i forbindelse med rene sinusboelger Download PDF

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Publication number
DK110491A
DK110491A DK110491A DK110491A DK110491A DK 110491 A DK110491 A DK 110491A DK 110491 A DK110491 A DK 110491A DK 110491 A DK110491 A DK 110491A DK 110491 A DK110491 A DK 110491A
Authority
DK
Denmark
Prior art keywords
frequency
sine wave
differences
pure sine
afc
Prior art date
Application number
DK110491A
Other languages
English (en)
Other versions
DK110491D0 (da
Inventor
David E Borth
James Frank M Kepler
Original Assignee
Motorola Inc
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 Inc filed Critical Motorola Inc
Publication of DK110491D0 publication Critical patent/DK110491D0/da
Publication of DK110491A publication Critical patent/DK110491A/da

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Classifications

    • 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
    • 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
    • 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
    • H03L7/087—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop
    • 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
    • H03J7/026—Means preventing a wrong working of the automatic frequency correction in case of fading or bad signal/noise ratio

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)
  • Dc-Dc Converters (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Superheterodyne Receivers (AREA)
DK110491A 1988-12-16 1991-06-11 Fremgangsmaade og apparat til digital automatisk frekvenskontrol (afc) i forbindelse med rene sinusboelger DK110491A (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/285,147 US4910470A (en) 1988-12-16 1988-12-16 Digital automatic frequency control of pure sine waves
PCT/US1989/005778 WO1990007233A1 (en) 1988-12-16 1989-12-14 Digital automatic frequency control on pure sine waves

Publications (2)

Publication Number Publication Date
DK110491D0 DK110491D0 (da) 1991-06-11
DK110491A true DK110491A (da) 1991-06-11

Family

ID=23092938

Family Applications (1)

Application Number Title Priority Date Filing Date
DK110491A DK110491A (da) 1988-12-16 1991-06-11 Fremgangsmaade og apparat til digital automatisk frekvenskontrol (afc) i forbindelse med rene sinusboelger

Country Status (17)

Country Link
US (1) US4910470A (da)
EP (1) EP0373517B1 (da)
JP (1) JP2992338B2 (da)
KR (1) KR940003196B1 (da)
AT (1) ATE158908T1 (da)
CA (1) CA2003688C (da)
DD (1) DD292789A5 (da)
DE (1) DE68928362T2 (da)
DK (1) DK110491A (da)
ES (1) ES2107410T3 (da)
GR (1) GR3024917T3 (da)
IE (1) IE80652B1 (da)
IL (1) IL92361A0 (da)
MX (1) MX166718B (da)
MY (1) MY104494A (da)
PT (1) PT92600B (da)
WO (1) WO1990007233A1 (da)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285200A (en) * 1990-11-29 1994-02-08 Kabushiki Kaisha Toshiba Portable electronic device and a method for processing data therefore
AUPN174495A0 (en) 1995-03-15 1995-04-06 Ketharanathan, Vettivetpillai Surgical prostheses
KR100193837B1 (ko) * 1996-08-24 1999-06-15 윤종용 시분할다윈접속 디지탈 이동통신 시스템의 주파수 교정 버스트 검출방법
JPH10224184A (ja) * 1997-02-12 1998-08-21 Nec Corp ディジタルａｆｃ回路
DE69829456T2 (de) 1998-01-15 2005-07-28 Motorola Semiconducteurs S.A. Vorrichtung und Verfahren zur Identifizierung eines Frequenzbursts
US6304620B1 (en) * 1998-03-20 2001-10-16 Philips Electronics North America Corproation Sign-cross product automatic frequency control loop
US6282500B1 (en) * 1998-09-09 2001-08-28 Qualcomm Inc. Accumulated phase measurement using open-loop phase estimation
AU2002227989A1 (en) * 2000-11-24 2002-06-03 Nokia Corporation Component measures
KR100423059B1 (ko) * 2001-12-27 2004-03-12 엘지이노텍 주식회사 광대역 수신기의 ａｆｃ 장치 및 방법
JP3732214B1 (ja) 2005-02-16 2006-01-05 三菱電機株式会社 周波数差検出装置及び方法、周波数判別装置及び方法、並びに周波数合成装置及び方法
JP5691186B2 (ja) * 2010-02-10 2015-04-01 アイコム株式会社 自動周波数制御装置および無線通信機
US8638889B2 (en) * 2010-10-28 2014-01-28 Broadcom Corporation Method and apparatus to improve acquisition of a quadrature amplitude modulated (QAM) signal having a frequency offset
US10785074B1 (en) 2020-04-29 2020-09-22 Hong Kong Applied Science and Technology Research Institute Company, Limited Cross-product detection method for a narrowband signal under a wide range of carrier frequency offset (CFO) using multiple frequency bins

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403355A (en) * 1966-01-12 1968-09-24 Fujitsu Ltd Phase control circuit
US4318055A (en) * 1979-08-27 1982-03-02 Westinghouse Electric Corp. Digitally controlled phase lock distillator system
GB2149244B (en) * 1983-10-29 1987-01-21 Standard Telephones Cables Ltd Digital demodulator arrangement for quadrature signals
NL8303819A (nl) * 1983-11-07 1985-06-03 Philips Nv Gesampelde costas lus.
US4814719A (en) * 1987-12-14 1989-03-21 Ford Aerospace & Communications Corporation Unsymmetrical QPSK demodulator

Also Published As

Publication number Publication date
KR940003196B1 (ko) 1994-04-15
PT92600A (pt) 1990-06-29
DE68928362D1 (de) 1997-11-06
MY104494A (en) 1994-04-30
DK110491D0 (da) 1991-06-11
US4910470A (en) 1990-03-20
IL92361A0 (en) 1990-07-26
ATE158908T1 (de) 1997-10-15
MX166718B (es) 1993-01-29
JPH04503441A (ja) 1992-06-18
DD292789A5 (de) 1991-08-08
GR3024917T3 (en) 1998-01-30
ES2107410T3 (es) 1997-12-01
IE894026L (en) 1990-06-16
EP0373517A3 (en) 1990-08-16
JP2992338B2 (ja) 1999-12-20
PT92600B (pt) 1998-05-29
CA2003688C (en) 1993-10-05
DE68928362T2 (de) 1998-03-19
EP0373517B1 (en) 1997-10-01
EP0373517A2 (en) 1990-06-20
CA2003688A1 (en) 1990-06-16
IE80652B1 (en) 1998-11-04
WO1990007233A1 (en) 1990-06-28
KR910700568A (ko) 1991-03-15

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment