JPS5687966A - Carrier wave pickup circuit - Google Patents
Carrier wave pickup circuitInfo
- 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
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.
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)
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 |
-
1979
- 1979-12-20 JP JP16467079A patent/JPS5687966A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6159580B2 (en) | 1986-12-17 |
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