BE525820A - - Google Patents
Info
- Publication number
- BE525820A BE525820A BE525820DA BE525820A BE 525820 A BE525820 A BE 525820A BE 525820D A BE525820D A BE 525820DA BE 525820 A BE525820 A BE 525820A
- Authority
- BE
- Belgium
Links
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
- H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
- H03B5/26—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator frequency-determining element being part of bridge circuit in closed ring around which signal is transmitted; frequency-determining element being connected via a bridge circuit to such a closed ring, e.g. Wien-Bridge oscillator, parallel-T oscillator
- H03B5/28—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator frequency-determining element being part of bridge circuit in closed ring around which signal is transmitted; frequency-determining element being connected via a bridge circuit to such a closed ring, e.g. Wien-Bridge oscillator, parallel-T oscillator active element in amplifier being vacuum tube
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/12—Modulator circuits; Transmitter circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Transmitters (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL175377 | 1953-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE525820A true BE525820A (US20030204162A1-20031030-M00001.png) |
Family
ID=32464668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE525820D BE525820A (US20030204162A1-20031030-M00001.png) | 1953-01-19 |
Country Status (7)
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2944226A (en) * | 1954-11-10 | 1960-07-05 | Lockheed Aircraft Corp | Frequency modulation signal generator |
| US3002159A (en) * | 1957-12-30 | 1961-09-26 | Daystrom Inc | Oscillator |
| US2962670A (en) * | 1958-05-02 | 1960-11-29 | Electronic Eng Co | Modulatable transistor oscillator |
| US2978653A (en) * | 1958-10-08 | 1961-04-04 | Daystrom Inc | Frequency modulated dual feedback phase shift oscillator |
| US3023377A (en) * | 1958-12-29 | 1962-02-27 | Electro Mechanical Res Inc | Frequency modulation systems |
| BE664565A (US20030204162A1-20031030-M00001.png) * | 1964-05-28 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2268872A (en) * | 1939-07-11 | 1942-01-06 | Hewlett Packard Co | Variable frequency oscillation generator |
| US2321269A (en) * | 1941-11-21 | 1943-06-08 | Rca Corp | Frequency modulation |
| US2451858A (en) * | 1945-01-26 | 1948-10-19 | Gen Electric | Controlled frequency oscillator |
| GB617139A (en) * | 1946-09-20 | 1949-02-01 | Standard Tetephones And Cables | Improvements in or relating to arrangements for modulating the frequency of an electric carrier wave |
| BE486292A (US20030204162A1-20031030-M00001.png) * | 1947-02-20 | |||
| FR966138A (US20030204162A1-20031030-M00001.png) * | 1947-05-10 | 1950-09-30 | ||
| US2496148A (en) * | 1948-09-29 | 1950-01-31 | Melpar Inc | Frequency modulator and time division multiplex system |
| DE851359C (de) * | 1951-03-14 | 1952-10-02 | Siemens Ag | Schaltungsanordnung zur Steuerung der Schwingungsfrequenz eines rueckgekoppelten Schwingungserzeugers, insbesondere fuer die Frequenzumtastung bei Wechselstromtelegraphie |
-
0
- BE BE525820D patent/BE525820A/xx unknown
- NL NL86726D patent/NL86726C/xx active
-
1954
- 1954-01-15 GB GB1261/54A patent/GB754216A/en not_active Expired
- 1954-01-15 US US404252A patent/US2814020A/en not_active Expired - Lifetime
- 1954-01-16 ES ES0213186A patent/ES213186A1/es not_active Expired
- 1954-01-17 DE DEN8314A patent/DE971380C/de not_active Expired
- 1954-01-18 FR FR1096918D patent/FR1096918A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES213186A1 (es) | 1954-04-01 |
| US2814020A (en) | 1957-11-19 |
| FR1096918A (fr) | 1955-06-28 |
| DE971380C (de) | 1959-01-22 |
| GB754216A (en) | 1956-08-08 |
| NL86726C (US20030204162A1-20031030-M00001.png) |
