GB2025717B - Demodulator - Google Patents

Demodulator

Info

Publication number
GB2025717B
GB2025717B GB7924913A GB7924913A GB2025717B GB 2025717 B GB2025717 B GB 2025717B GB 7924913 A GB7924913 A GB 7924913A GB 7924913 A GB7924913 A GB 7924913A GB 2025717 B GB2025717 B GB 2025717B
Authority
GB
United Kingdom
Prior art keywords
demodulator
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
GB7924913A
Other versions
GB2025717A (en
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.)
Societe Anonyme de Telecommunications SAT
Original Assignee
Societe Anonyme de Telecommunications SAT
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 Societe Anonyme de Telecommunications SAT filed Critical Societe Anonyme de Telecommunications SAT
Publication of GB2025717A publication Critical patent/GB2025717A/en
Application granted granted Critical
Publication of GB2025717B publication Critical patent/GB2025717B/en
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
    • H04L27/18—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
    • H04L27/2272—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals using phase locked loops

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB7924913A 1978-07-18 1979-07-17 Demodulator Expired GB2025717B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7821247A FR2431795A1 (en) 1978-07-18 1978-07-18 DIGITAL DEMODULATOR WITH PHASE LEVELS

Publications (2)

Publication Number Publication Date
GB2025717A GB2025717A (en) 1980-01-23
GB2025717B true GB2025717B (en) 1982-08-25

Family

ID=9210834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7924913A Expired GB2025717B (en) 1978-07-18 1979-07-17 Demodulator

Country Status (4)

Country Link
DE (1) DE2928734C3 (en)
FR (1) FR2431795A1 (en)
GB (1) GB2025717B (en)
IT (1) IT1122182B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518680A (en) * 1967-10-02 1970-06-30 North American Rockwell Carrier phase lock apparatus using correlation between received quadrature phase components
GB1553654A (en) * 1978-02-17 1979-09-26 Marconi Co Ltd Marconi co ltd

Also Published As

Publication number Publication date
FR2431795B1 (en) 1981-10-23
FR2431795A1 (en) 1980-02-15
DE2928734C3 (en) 1981-08-06
DE2928734A1 (en) 1980-01-31
IT7924359A0 (en) 1979-07-16
GB2025717A (en) 1980-01-23
IT1122182B (en) 1986-04-23
DE2928734B2 (en) 1980-12-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee