BE457989A - - Google Patents
Info
- Publication number
- BE457989A BE457989A BE457989DA BE457989A BE 457989 A BE457989 A BE 457989A BE 457989D A BE457989D A BE 457989DA BE 457989 A BE457989 A BE 457989A
- Authority
- BE
- Belgium
Links
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
- H03D7/14—Balanced arrangements
-
- 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
- H03D7/14—Balanced arrangements
- H03D7/1408—Balanced arrangements with diodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
- H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
- H04B15/06—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder by local oscillators of receivers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2582726X | 1943-03-27 | ||
| NL620271X | 1943-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE457989A true BE457989A (pt) | 1945-06-27 |
Family
ID=32232801
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE455016D BE455016A (pt) | 1943-03-27 | 1944-03-25 | |
| BE457989D BE457989A (pt) | 1943-03-27 | 1944-12-27 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE455016D BE455016A (pt) | 1943-03-27 | 1944-03-25 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2582726A (pt) |
| BE (2) | BE455016A (pt) |
| FR (2) | FR903030A (pt) |
| GB (1) | GB620271A (pt) |
| NL (1) | NL65632C (pt) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2712062A (en) * | 1949-04-12 | 1955-06-28 | Rca Corp | Converter circuits |
| US2835873A (en) * | 1954-12-27 | 1958-05-20 | Collins Radio Co | Filter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1980158A (en) * | 1931-05-01 | 1934-11-06 | Rca Corp | Oscillatory circuit |
| US2106776A (en) * | 1935-02-23 | 1938-02-01 | Rca Corp | Receiving system |
| NL58874C (pt) * | 1938-01-29 | |||
| US2326801A (en) * | 1938-09-22 | 1943-08-17 | George E Pray | High frequency tubes and circuits |
| US2307074A (en) * | 1938-09-22 | 1943-01-05 | George E Pray | Modulating circuit for high frequencies |
| US2382693A (en) * | 1940-02-24 | 1945-08-14 | Dallenbach Walter | Oscillator-modulator circuit |
| US2260844A (en) * | 1940-03-12 | 1941-10-28 | Gen Electric | Ultra high frequency converter |
| BE445613A (pt) * | 1941-05-19 | |||
| US2479537A (en) * | 1942-12-30 | 1949-08-16 | Gen Electric | Detector-oscillator circuit for ultra high frequency receivers |
-
1943
- 1943-03-27 NL NL110553A patent/NL65632C/nl active
-
1944
- 1944-03-24 FR FR903030D patent/FR903030A/fr not_active Expired
- 1944-03-25 BE BE455016D patent/BE455016A/fr unknown
- 1944-12-27 BE BE457989D patent/BE457989A/fr unknown
-
1946
- 1946-02-11 FR FR54440D patent/FR54440E/fr not_active Expired
- 1946-07-02 US US680930A patent/US2582726A/en not_active Expired - Lifetime
-
1947
- 1947-01-14 GB GB1260/47A patent/GB620271A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR903030A (fr) | 1945-09-21 |
| NL65632C (pt) | 1950-05-15 |
| FR54440E (fr) | 1950-05-02 |
| US2582726A (en) | 1952-01-15 |
| BE455016A (pt) | 1944-04-29 |
| GB620271A (en) | 1949-03-22 |