BE449061A - - Google Patents
Info
- Publication number
- BE449061A BE449061A BE449061DA BE449061A BE 449061 A BE449061 A BE 449061A BE 449061D A BE449061D A BE 449061DA BE 449061 A BE449061 A BE 449061A
- Authority
- BE
- Belgium
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
- H04L27/2276—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals using frequency multiplication or harmonic tracking
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL107394D DE762852C (de) | 1942-04-02 | 1942-04-02 | Schaltungsanordnung fuer Wechselstromtelegraphie, bei der eine Wechselspannung im Modulator mit Doppelstrom gesteuert wird und bei der auf der Empfangsseite die ankommende Frequenz verdoppelt und mit der verdoppelten Frequenz ein Generator von der Ursprungsfrequenz gesteuert wird |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE449061A true BE449061A (pt) | 1943-03-31 |
Family
ID=6538210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE449061D BE449061A (pt) | 1942-04-02 | 1943-02-04 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE449061A (pt) |
| CH (1) | CH235872A (pt) |
| DE (1) | DE762852C (pt) |
| FR (1) | FR891610A (pt) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1559642A (en) * | 1923-08-28 | 1925-11-03 | American Telephone & Telegraph | Signaling with phase reversals |
-
1942
- 1942-04-02 DE DEL107394D patent/DE762852C/de not_active Expired
- 1942-12-30 CH CH235872D patent/CH235872A/de unknown
-
1943
- 1943-02-04 BE BE449061D patent/BE449061A/xx unknown
- 1943-03-01 FR FR891610D patent/FR891610A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH235872A (de) | 1944-12-31 |
| DE762852C (de) | 1954-07-26 |
| FR891610A (fr) | 1944-03-13 |