DE3462207D1 - Demodulator with automatic gain control circuit - Google Patents

Demodulator with automatic gain control circuit

Info

Publication number
DE3462207D1
DE3462207D1 DE8484102854T DE3462207T DE3462207D1 DE 3462207 D1 DE3462207 D1 DE 3462207D1 DE 8484102854 T DE8484102854 T DE 8484102854T DE 3462207 T DE3462207 T DE 3462207T DE 3462207 D1 DE3462207 D1 DE 3462207D1
Authority
DE
Germany
Prior art keywords
demodulator
control circuit
gain control
automatic gain
automatic
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
Application number
DE8484102854T
Other languages
English (en)
Inventor
Yasuharu Yoshida
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE3462207D1 publication Critical patent/DE3462207D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3809—Amplitude regulation arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DE8484102854T 1983-03-16 1984-03-15 Demodulator with automatic gain control circuit Expired DE3462207D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58043495A JPH063947B2 (ja) 1983-03-16 1983-03-16 自動利得制御回路

Publications (1)

Publication Number Publication Date
DE3462207D1 true DE3462207D1 (en) 1987-02-26

Family

ID=12665290

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484102854T Expired DE3462207D1 (en) 1983-03-16 1984-03-15 Demodulator with automatic gain control circuit

Country Status (6)

Country Link
US (1) US4574246A (de)
EP (1) EP0120416B1 (de)
JP (1) JPH063947B2 (de)
AU (1) AU556888B2 (de)
CA (1) CA1214834A (de)
DE (1) DE3462207D1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61112414A (ja) * 1984-11-06 1986-05-30 Nec Corp 自動レベル制御回路
US4703282A (en) * 1985-06-29 1987-10-27 Nec Corporation Digital demodulation system
CA1268828A (en) * 1986-02-08 1990-05-08 Yasuharu Yoshida Multilevel modulator capable of producing a composite modulated signal comprising a quadrature amplitude modulated component and a phase modulated component
JPS637024A (ja) * 1986-06-27 1988-01-12 Fujitsu Ltd 自動ドリフト制御回路
JPH0691481B2 (ja) * 1987-08-18 1994-11-14 日本電気株式会社 Ａｇｃ回路
EP0305603B1 (de) * 1987-09-03 1993-03-10 Koninklijke Philips Electronics N.V. Phasen- und Verstärkungsregelung für einen Empfänger mit zwei Zweigen
CA1278610C (en) * 1987-09-21 1991-01-02 Eisaku Sasaki Stepped square-qam demodulator utilizing all signal points to generate control signals
FR2627653B1 (fr) * 1988-02-18 1994-04-08 Alcatel Thomson Faisceaux Hertzi Procede d'asservissement de l'instant de regeneration dans une transmission numerique utilisant une modulation de porteuse selon deux axes en quadrature et dispositif de mise en oeuvre de ce procede
US4901332A (en) * 1988-10-27 1990-02-13 Unisys Corp. Noncoherent-coherent A.C. coupled base band AGC receiver
DE3911818A1 (de) * 1989-04-11 1990-10-25 Ant Nachrichtentech Verfahren und schaltungsanordnung zur pegelregelung eines diskriminators
US5233634A (en) * 1989-10-18 1993-08-03 Nokia Mobile Phones Ltd. Automatic gain control circuit in a radio telephone receiver
US5565932A (en) * 1994-11-08 1996-10-15 Zenith Electronics Corp. AGC system with pilot using digital data reference
JP3269933B2 (ja) * 1995-03-20 2002-04-02 富士通株式会社 キャリア再生回路
AUPN455695A0 (en) * 1995-08-01 1995-08-24 Canon Kabushiki Kaisha Qam spread spectrum demodulation system
US5729173A (en) * 1995-09-20 1998-03-17 Taisei Electric Incorporation Demodulation of quadrature amplitude modulation signals
CN1115032C (zh) * 1997-05-23 2003-07-16 皇家菲利浦电子有限公司 带可控放大器装置的接收机
DE19918385C2 (de) * 1999-04-22 2001-11-15 Siemens Ag Verfahren und Schaltungsanordnung zum Regeln des einem Analog/Digital-Wandler zugeführten Signalpegels
JP3594297B2 (ja) * 2000-11-08 2004-11-24 株式会社日立国際電気 データ再生方式およびデータ再生器
CN1729615A (zh) * 2002-12-19 2006-02-01 皇家飞利浦电子股份有限公司 具有振幅、共模和相位校正的混频器系统
US8306098B1 (en) * 2007-08-15 2012-11-06 Agilent Technologies, Inc. Method for error display of orthogonal signals

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646448A (en) * 1970-02-16 1972-02-29 Datamax Corp Quadrature injection control circuit
US4084137A (en) * 1976-08-24 1978-04-11 Communications Satellite Corporation Multidimensional code communication systems
US4270221A (en) * 1979-10-17 1981-05-26 Rca Corporation Phaselocked receiver with orderwire channel
JPS57131152A (en) * 1981-02-06 1982-08-13 Nec Corp Automatic gain controlling circuit
US4476585A (en) * 1982-01-25 1984-10-09 International Telephone And Telegraph Corporation Baseband demodulator for FM signals
JPS58137309A (ja) * 1982-02-10 1983-08-15 Nec Corp Ｆｍ復調器

Also Published As

Publication number Publication date
CA1214834A (en) 1986-12-02
JPS59169256A (ja) 1984-09-25
US4574246A (en) 1986-03-04
AU556888B2 (en) 1986-11-20
EP0120416A1 (de) 1984-10-03
EP0120416B1 (de) 1987-01-21
AU2564284A (en) 1984-09-20
JPH063947B2 (ja) 1994-01-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition