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DE69834477D1 - Automatische frequenzregelungsschaltung - Google Patents

Automatische frequenzregelungsschaltung

Info

Publication number
DE69834477D1
DE69834477D1 DE69834477T DE69834477T DE69834477D1 DE 69834477 D1 DE69834477 D1 DE 69834477D1 DE 69834477 T DE69834477 T DE 69834477T DE 69834477 T DE69834477 T DE 69834477T DE 69834477 D1 DE69834477 D1 DE 69834477D1
Authority
DE
Germany
Prior art keywords
control circuit
frequency control
automatic frequency
automatic
circuit
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69834477T
Other languages
English (en)
Other versions
DE69834477T2 (de
Inventor
Akihiro Horii
Kenichi Shiraishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kenwood KK
Original Assignee
Kenwood KK
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 Kenwood KK filed Critical Kenwood KK
Publication of DE69834477D1 publication Critical patent/DE69834477D1/de
Application granted granted Critical
Publication of DE69834477T2 publication Critical patent/DE69834477T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (AREA)
DE69834477T 1997-01-30 1998-01-29 Automatische frequenzregelungsschaltung Expired - Fee Related DE69834477T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2981197A JPH10215149A (ja) 1997-01-30 1997-01-30 自動周波数制御回路
JP2981197 1997-01-30
PCT/JP1998/000354 WO1998034347A1 (en) 1997-01-30 1998-01-29 Automatic frequency control circuit

Publications (2)

Publication Number Publication Date
DE69834477D1 true DE69834477D1 (de) 2006-06-14
DE69834477T2 DE69834477T2 (de) 2006-11-02

Family

ID=12286413

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69834477T Expired - Fee Related DE69834477T2 (de) 1997-01-30 1998-01-29 Automatische frequenzregelungsschaltung

Country Status (4)

Country Link
EP (1) EP0956644B1 (de)
JP (1) JPH10215149A (de)
DE (1) DE69834477T2 (de)
WO (1) WO1998034347A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3080601B2 (ja) * 1997-06-06 2000-08-28 株式会社ケンウッド 搬送波再生回路
CN1227807C (zh) * 1999-12-23 2005-11-16 皇家菲利浦电子有限公司 镜频干扰抑制
JP3738766B2 (ja) 2003-02-25 2006-01-25 ソニー株式会社 通信装置
JP3804618B2 (ja) 2003-02-25 2006-08-02 ソニー株式会社 通信装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281412A (en) * 1979-07-05 1981-07-28 Cincinnati Electronics Corporation Method of and apparatus for transmitting and recovering offset QPSK modulated data
US4833416A (en) * 1988-03-30 1989-05-23 Motorola, Inc. QPSK/BPSK demodulator
US5289506A (en) * 1990-02-05 1994-02-22 Sharp Kabushiki Kaisha Automatic frequency control circuit
JPH0738023B2 (ja) * 1990-02-13 1995-04-26 パイオニア株式会社 Ｇｐｓ受信機の衛星電波捕捉方法
JPH08213881A (ja) * 1995-02-02 1996-08-20 Fujitsu Ltd 周波数制御回路

Also Published As

Publication number Publication date
EP0956644B1 (de) 2006-05-10
DE69834477T2 (de) 2006-11-02
JPH10215149A (ja) 1998-08-11
WO1998034347A1 (en) 1998-08-06
EP0956644A1 (de) 1999-11-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee