JPS5687966A - Carrier wave pickup circuit - Google Patents

Carrier wave pickup circuit

Info

Publication number
JPS5687966A
JPS5687966A JP16467079A JP16467079A JPS5687966A JP S5687966 A JPS5687966 A JP S5687966A JP 16467079 A JP16467079 A JP 16467079A JP 16467079 A JP16467079 A JP 16467079A JP S5687966 A JPS5687966 A JP S5687966A
Authority
JP
Japan
Prior art keywords
switching
pass filters
band pass
band
burst
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.)
Granted
Application number
JP16467079A
Other languages
Japanese (ja)
Other versions
JPS6159580B2 (en
Inventor
Isao Nakazawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16467079A priority Critical patent/JPS5687966A/en
Publication of JPS5687966A publication Critical patent/JPS5687966A/en
Publication of JPS6159580B2 publication Critical patent/JPS6159580B2/ja
Granted 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
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To reduce an occurrence of phase jitter at switching of a filter for pickup of a carrier, by switching continuously two band filters with fixed band width. CONSTITUTION:Carrier burst input is given to two band pass filters 14, 15 having the same characteristics through dividing it into two at the brancher 11. Band pass filters 14, 15 have a fixed band to continuously switch the burst input with a burst switching controller 13, allowing to alternately supply it to the band pass filters 14 and 15. The carrier burst through the band pass filters 14 and 15 is fed to a synthesizer 16 and output as a continuous signal. Thus, the phase jitter at switching is made small and mechanical filters can be used.
JP16467079A 1979-12-20 1979-12-20 Carrier wave pickup circuit Granted JPS5687966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16467079A JPS5687966A (en) 1979-12-20 1979-12-20 Carrier wave pickup circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16467079A JPS5687966A (en) 1979-12-20 1979-12-20 Carrier wave pickup circuit

Publications (2)

Publication Number Publication Date
JPS5687966A true JPS5687966A (en) 1981-07-17
JPS6159580B2 JPS6159580B2 (en) 1986-12-17

Family

ID=15797589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16467079A Granted JPS5687966A (en) 1979-12-20 1979-12-20 Carrier wave pickup circuit

Country Status (1)

Country Link
JP (1) JPS5687966A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS637688U (en) * 1986-07-02 1988-01-19
JPH04118313U (en) * 1991-04-03 1992-10-22 デンカポリマー株式会社 packaging containers

Also Published As

Publication number Publication date
JPS6159580B2 (en) 1986-12-17

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