KR890009066A - Automatic Frequency Control in Quadra-phase Frequency and Phase Demodulation Systems - Google Patents
Automatic Frequency Control in Quadra-phase Frequency and Phase Demodulation Systems Download PDFInfo
- Publication number
- KR890009066A KR890009066A KR1019870013618A KR870013618A KR890009066A KR 890009066 A KR890009066 A KR 890009066A KR 1019870013618 A KR1019870013618 A KR 1019870013618A KR 870013618 A KR870013618 A KR 870013618A KR 890009066 A KR890009066 A KR 890009066A
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- KR
- South Korea
- Prior art keywords
- frequency
- component
- phase
- signal
- quadra
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
내용 없음No content
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명의 시스템도.2 is a system diagram of the present invention.
제3도는 제2도에서 위상 변화시의 각부파형도.3 is an angle waveform of phase change in FIG. 2;
제4도는 신호처리부(400)내의 주파수 또는 위상변조신호의 복조흐름도.4 is a demodulation flow diagram of a frequency or phase modulated signal in the signal processor 400.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019870013618A KR900004407B1 (en) | 1987-11-30 | 1987-11-30 | Auto frequency control method in frequency and phase demodulation system by quadri-phase |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019870013618A KR900004407B1 (en) | 1987-11-30 | 1987-11-30 | Auto frequency control method in frequency and phase demodulation system by quadri-phase |
Publications (2)
Publication Number | Publication Date |
---|---|
KR890009066A true KR890009066A (en) | 1989-07-13 |
KR900004407B1 KR900004407B1 (en) | 1990-06-25 |
Family
ID=19266514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019870013618A KR900004407B1 (en) | 1987-11-30 | 1987-11-30 | Auto frequency control method in frequency and phase demodulation system by quadri-phase |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR900004407B1 (en) |
-
1987
- 1987-11-30 KR KR1019870013618A patent/KR900004407B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR900004407B1 (en) | 1990-06-25 |
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Payment date: 20070509 Year of fee payment: 18 |
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