NL228818A - - Google Patents
Info
- Publication number
- NL228818A NL228818A NL228818DA NL228818A NL 228818 A NL228818 A NL 228818A NL 228818D A NL228818D A NL 228818DA NL 228818 A NL228818 A NL 228818A
- Authority
- NL
- Netherlands
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 |
|---|---|---|---|
| US666812A US2972081A (en) | 1957-06-20 | 1957-06-20 | Low noise amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL228818A true NL228818A (xx) |
Family
ID=24675594
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL102786D NL102786C (xx) | 1957-06-20 | ||
| NL228818D NL228818A (xx) | 1957-06-20 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL102786D NL102786C (xx) | 1957-06-20 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2972081A (xx) |
| BE (1) | BE568727A (xx) |
| DE (1) | DE1127497B (xx) |
| FR (1) | FR1208555A (xx) |
| GB (1) | GB857652A (xx) |
| NL (2) | NL228818A (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3090925A (en) * | 1958-09-17 | 1963-05-21 | Zenith Radio Corp | Parametric amplifier |
| US4931695A (en) * | 1988-06-02 | 1990-06-05 | Litton Systems, Inc. | High performance extended interaction output circuit |
| 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 (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2455269A (en) * | 1942-11-17 | 1948-11-30 | Bell Telephone Labor Inc | Velocity variation apparatus |
| US2579480A (en) * | 1947-08-26 | 1951-12-25 | Sperry Corp | Ultrahigh-frequency electron discharge apparatus |
| FR972679A (fr) * | 1948-09-01 | 1951-02-01 | Csf | Système amplificateur à faible bruit pour ondes ultra courtes |
| US2595698A (en) * | 1949-05-10 | 1952-05-06 | Rca Corp | Electron discharge device and associated circuit |
| US2767259A (en) * | 1952-10-01 | 1956-10-16 | Rca Corp | Noise compensation in electron beam devices |
| US2794936A (en) * | 1952-12-24 | 1957-06-04 | Csf | Space-charge wave tubes |
| US2879439A (en) * | 1958-01-28 | 1959-03-24 | Charles H Townes | Production of electromagnetic energy |
-
0
- NL NL102786D patent/NL102786C/xx active
- BE BE568727D patent/BE568727A/xx unknown
- NL NL228818D patent/NL228818A/xx unknown
-
1957
- 1957-06-20 US US666812A patent/US2972081A/en not_active Expired - Lifetime
-
1958
- 1958-05-28 DE DEW23406A patent/DE1127497B/de active Pending
- 1958-06-17 GB GB19390/58A patent/GB857652A/en not_active Expired
- 1958-06-20 FR FR1208555D patent/FR1208555A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2972081A (en) | 1961-02-14 |
| NL102786C (xx) | |
| BE568727A (xx) | |
| FR1208555A (fr) | 1960-02-24 |
| DE1127497B (de) | 1962-04-12 |
| GB857652A (en) | 1961-01-04 |