BE572781A - - Google Patents
Info
- Publication number
- BE572781A BE572781A BE572781DA BE572781A BE 572781 A BE572781 A BE 572781A BE 572781D A BE572781D A BE 572781DA BE 572781 A BE572781 A BE 572781A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
- H01J25/49—Tubes using the parametric principle, e.g. for parametric amplification
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US698854A US2974252A (en) | 1957-11-25 | 1957-11-25 | Low noise amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE572781A true BE572781A (US07981874-20110719-C00117.png) |
Family
ID=24806927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE572781D BE572781A (US07981874-20110719-C00117.png) | 1957-11-25 |
Country Status (5)
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3258706A (en) * | 1966-06-28 | Noise reduction in slow beam waves by parametric cooling | ||
| US3090925A (en) * | 1958-09-17 | 1963-05-21 | Zenith Radio Corp | Parametric amplifier |
| US3087119A (en) * | 1959-11-19 | 1963-04-23 | Bell Telephone Labor Inc | Noise reduction system for parametric amplifiers |
| US3096485A (en) * | 1960-01-04 | 1963-07-02 | Rca Corp | Diode traveling wave parametric amplifier |
| US3138765A (en) * | 1960-02-01 | 1964-06-23 | Bell Telephone Labor Inc | Triode parametric amplifier |
| US3213383A (en) * | 1960-03-14 | 1965-10-19 | Philips Corp | Parametric amplifier with its own backward wave oscillator supplying pump frequency |
| US3060341A (en) * | 1960-04-08 | 1962-10-23 | Bell Telephone Labor Inc | Traveling wave tube |
| NL265095A (US07981874-20110719-C00117.png) * | 1960-07-04 | |||
| NL281685A (US07981874-20110719-C00117.png) * | 1961-08-02 | |||
| GB9016017D0 (en) * | 1990-07-20 | 1990-09-05 | Eev Ltd | Amplifying arrangements |
| US5162747A (en) * | 1991-02-19 | 1992-11-10 | Hughes Aircraft Company | Velocity modulation microwave amplifier with multiple band interaction structures |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE434657A (US07981874-20110719-C00117.png) * | 1937-07-14 | |||
| US2272165A (en) * | 1938-03-01 | 1942-02-03 | Univ Leland Stanford Junior | High frequency electrical apparatus |
| US2455269A (en) * | 1942-11-17 | 1948-11-30 | Bell Telephone Labor Inc | Velocity variation apparatus |
| BE481272A (US07981874-20110719-C00117.png) * | 1945-12-17 | |||
| US2494721A (en) * | 1947-06-18 | 1950-01-17 | Bell Telephone Labor Inc | Electron velocity variation device with noise reducing resonator |
| US2579480A (en) * | 1947-08-26 | 1951-12-25 | Sperry Corp | Ultrahigh-frequency electron discharge apparatus |
| US2511120A (en) * | 1948-06-12 | 1950-06-13 | Bell Telephone Labor Inc | Balanced electronic translating system |
| US2720610A (en) * | 1950-07-27 | 1955-10-11 | Kazan Benjamin | Noise reducing travelling-wave tube |
| US2767259A (en) * | 1952-10-01 | 1956-10-16 | Rca Corp | Noise compensation in electron beam devices |
| US2726291A (en) * | 1953-12-07 | 1955-12-06 | Bell Telephone Labor Inc | Traveling wave tube |
| US2805333A (en) * | 1955-07-26 | 1957-09-03 | Sylvania Electric Prod | Traveling wave tube mixer |
-
0
- NL NL113950D patent/NL113950C/xx active
- BE BE572781D patent/BE572781A/xx unknown
- NL NL232220D patent/NL232220A/xx unknown
-
1957
- 1957-11-25 US US698854A patent/US2974252A/en not_active Expired - Lifetime
-
1958
- 1958-11-03 GB GB35156/58A patent/GB832172A/en not_active Expired
- 1958-11-04 FR FR1213157D patent/FR1213157A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1213157A (fr) | 1960-03-29 |
| GB832172A (en) | 1960-04-06 |
| NL113950C (US07981874-20110719-C00117.png) | |
| NL232220A (US07981874-20110719-C00117.png) | |
| US2974252A (en) | 1961-03-07 |
