BE473672A - - Google Patents
Info
- Publication number
- BE473672A BE473672A BE473672DA BE473672A BE 473672 A BE473672 A BE 473672A BE 473672D A BE473672D A BE 473672DA BE 473672 A BE473672 A BE 473672A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
- H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
- H03D3/06—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators
- H03D3/16—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of electromechanical resonators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Ac-Ac Conversion (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US589875A US2495776A (en) | 1945-04-23 | 1945-04-23 | Frequency-modulated transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE473672A true BE473672A (xx) |
Family
ID=24359912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE473672D BE473672A (xx) | 1945-04-23 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2495776A (xx) |
| BE (1) | BE473672A (xx) |
| CH (1) | CH269954A (xx) |
| ES (1) | ES176997A1 (xx) |
| FR (2) | FR939183A (xx) |
| GB (2) | GB606359A (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2724089A (en) * | 1949-12-09 | 1955-11-15 | Du Mont Allen B Lab Inc | Crystal discriminator |
| US2720591A (en) * | 1950-02-01 | 1955-10-11 | Arf Products | Frequency modulation transmitter |
| US2817820A (en) * | 1952-12-31 | 1957-12-24 | Raytheon Mfg Co | Frequency-modulated communication systems |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2296919A (en) * | 1940-07-17 | 1942-09-29 | Rca Corp | Direct-current insertion |
| US2312070A (en) * | 1940-12-07 | 1943-02-23 | Rca Corp | Frequency discriminator circuit |
| US2374735A (en) * | 1943-03-31 | 1945-05-01 | Rca Corp | Combined discriminator and carrier filter circuits |
-
0
- BE BE473672D patent/BE473672A/xx unknown
-
1945
- 1945-04-23 US US589875A patent/US2495776A/en not_active Expired - Lifetime
- 1945-12-28 GB GB35064/45A patent/GB606359A/en not_active Expired
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1946
- 1946-06-06 GB GB17266/46A patent/GB620591A/en not_active Expired
- 1946-06-07 FR FR939183D patent/FR939183A/fr not_active Expired
-
1947
- 1947-02-28 ES ES176997A patent/ES176997A1/es not_active Expired
- 1947-04-18 CH CH269954D patent/CH269954A/fr unknown
- 1947-08-05 FR FR57658D patent/FR57658E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR939183A (fr) | 1948-11-05 |
| GB620591A (en) | 1949-03-28 |
| GB606359A (en) | 1948-08-12 |
| FR57658E (fr) | 1953-05-04 |
| ES176997A1 (es) | 1947-04-16 |
| US2495776A (en) | 1950-01-31 |
| CH269954A (fr) | 1950-07-31 |