JPS5516530A - Circuit corrector of communication unit - Google Patents

Circuit corrector of communication unit

Info

Publication number
JPS5516530A
JPS5516530A JP8878578A JP8878578A JPS5516530A JP S5516530 A JPS5516530 A JP S5516530A JP 8878578 A JP8878578 A JP 8878578A JP 8878578 A JP8878578 A JP 8878578A JP S5516530 A JPS5516530 A JP S5516530A
Authority
JP
Japan
Prior art keywords
frequency
signal
omega1
variation
communication unit
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.)
Pending
Application number
JP8878578A
Other languages
Japanese (ja)
Inventor
Teruo Aoki
Takehiko Tachiki
Kazuhiro Chiba
Shigenori Kino
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8878578A priority Critical patent/JPS5516530A/en
Publication of JPS5516530A publication Critical patent/JPS5516530A/en
Pending 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
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/066—Carrier recovery circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To make it possible to correct easily the variation in phase of a communication circuit by equipping a conventional communication unit with a circuit corrector which has a carrier regenerator and 1st to 3rd frequency converters. CONSTITUTION:Carrier regenerator 41 extract a carrier signal of omegac in angular frequency from signal (c) received at the reception side of a communication circuit and 1st frequency converter 45 converts the frequency of the output signal of carrier regenerator 41 into a freqfency band centering angular frequency omega1 by using a signal of omega1-omegac or omega1+omegac in angular frequency. The 2nd frequency converter 51 performs frequency conversion of received signal (c) only by an angular frequency of omega1, and 3rd frequency converter 54 converts the frequency of the output signal of 2nd frequency converter 51 only by the frequency of the output signal of 1st frequency converter 45. Consequently, variation in phase and variation in frequency generated on the communication circuit can both be corrected and the communication unit can be obtained which is free from variation in phase.
JP8878578A 1978-07-20 1978-07-20 Circuit corrector of communication unit Pending JPS5516530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8878578A JPS5516530A (en) 1978-07-20 1978-07-20 Circuit corrector of communication unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8878578A JPS5516530A (en) 1978-07-20 1978-07-20 Circuit corrector of communication unit

Publications (1)

Publication Number Publication Date
JPS5516530A true JPS5516530A (en) 1980-02-05

Family

ID=13952494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8878578A Pending JPS5516530A (en) 1978-07-20 1978-07-20 Circuit corrector of communication unit

Country Status (1)

Country Link
JP (1) JPS5516530A (en)

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