JPS5516531A - Circuit corrector of communication unit - Google Patents

Circuit corrector of communication unit

Info

Publication number
JPS5516531A
JPS5516531A JP8878678A JP8878678A JPS5516531A JP S5516531 A JPS5516531 A JP S5516531A JP 8878678 A JP8878678 A JP 8878678A JP 8878678 A JP8878678 A JP 8878678A JP S5516531 A JPS5516531 A JP S5516531A
Authority
JP
Japan
Prior art keywords
signal
frequency
omega1
variation
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.)
Pending
Application number
JP8878678A
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 JP8878678A priority Critical patent/JPS5516531A/en
Publication of JPS5516531A publication Critical patent/JPS5516531A/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

Abstract

PURPOSE:To remove influence of variation in phase by easily correcting the phase variation of a communication circuit by providing a conventional communication unit with a circuit corrector which can folow up even large phase variation. CONSTITUTION:Input signal (a) is modulated by modulator 1, whose output (b) is transmitted via communication circuit 2 being under the influency of phase variation, so that reception signal (c) will be inputted to circuit corrector 4. Carrier regenerator 41 extracts a carrier signal of omegac in angular frequency from this signal and 1st frequency converter 45 performs the frequency conversion of the output signal into a frequency band centering on omega1 by using a signal of (omega1-omegac) or (omega1+ omegac); and 2nd frequency converter 50 converts the frequency of the output signal by omega1, and 3rd frequency converter 54 performs frequency conversion by omega1, thereby correcting the variation in frequency and in phase caused on the communication circuit. Further, demodulator 3 demodulates received signal C to obtain output signal (d).
JP8878678A 1978-07-20 1978-07-20 Circuit corrector of communication unit Pending JPS5516531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8878678A JPS5516531A (en) 1978-07-20 1978-07-20 Circuit corrector of communication unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8878678A JPS5516531A (en) 1978-07-20 1978-07-20 Circuit corrector of communication unit

Publications (1)

Publication Number Publication Date
JPS5516531A true JPS5516531A (en) 1980-02-05

Family

ID=13952521

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8878678A Pending JPS5516531A (en) 1978-07-20 1978-07-20 Circuit corrector of communication unit

Country Status (1)

Country Link
JP (1) JPS5516531A (en)

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