GB937863A - Parametric amplifier - Google Patents
Parametric amplifierInfo
- Publication number
- GB937863A GB937863A GB5474/59A GB547459A GB937863A GB 937863 A GB937863 A GB 937863A GB 5474/59 A GB5474/59 A GB 5474/59A GB 547459 A GB547459 A GB 547459A GB 937863 A GB937863 A GB 937863A
- Authority
- GB
- United Kingdom
- Prior art keywords
- helix
- replaced
- oscillator
- wave
- helices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
Landscapes
- Microwave Amplifiers (AREA)
- Microwave Tubes (AREA)
Abstract
937,863. Space charge wave tubes. MULLARD Ltd. Feb. 17, 1960 [Feb. 17, 1959], No. 5474/59. Class 39 (1). A parametric amplifier comprises a first helix B, Fig. 2, to velocity modulate the beam, a second helix C operating as a signal amplifying device and a third helix D which operates as an oscillator and is back-coupled to the first device B to generate the pumping action. A further helix A may be provided to extract noise from the beam by stripping it from the fast wave. Helix D may operate as a backward-wave oscillator or replaced by a klystron oscillator, and helix B may be replaced by a resonant cavity. Helices A, B operative under Kompfner dip conditions. The coupling line L may be a waveguide or a coaxial line and may be outside or inside the tube. Two or more of helices A, B, C, D may be a single helix divided by electromagnetic wave barriers e.g. a tungsten wire choke formed as part of the helix, or a few turns of the helix are coated with lossy material containing carbon. Matched terminating resistances RA, RB, RC, RD may be replaced by coating the ends of the helix with carbon. Helix A may be replaced by a cylindrical resistive wall.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL135895D NL135895C (en) | 1959-02-17 | ||
| NL248481D NL248481A (en) | 1959-02-17 | ||
| GB5474/59A GB937863A (en) | 1959-02-17 | 1959-02-17 | Parametric amplifier |
| CH161860A CH389038A (en) | 1959-02-17 | 1960-02-13 | Signal amplification device with an electron beam tube |
| DEN17888A DE1117780B (en) | 1959-02-17 | 1960-02-15 | Electron beam tubes based on the parametric principle for amplifying electrical signals of very high frequency |
| BE587674A BE587674A (en) | 1959-02-17 | 1960-02-16 | Amplifier device equipped with an electron beam tube |
| AT118260A AT216574B (en) | 1959-02-17 | 1960-02-16 | Signal amplification device as well as electron bundle tube used for this purpose |
| FR818737A FR1248808A (en) | 1959-02-17 | 1960-02-17 | Electron beam tube and amplifying device equipped with such a tube |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5474/59A GB937863A (en) | 1959-02-17 | 1959-02-17 | Parametric amplifier |
| GB547460A GB934149A (en) | 1959-02-17 | 1960-02-04 | Improvements in or relating to excavating and/or loading machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB937863A true GB937863A (en) | 1963-09-25 |
Family
ID=26239912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5474/59A Expired GB937863A (en) | 1959-02-17 | 1959-02-17 | Parametric amplifier |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT216574B (en) |
| CH (1) | CH389038A (en) |
| DE (1) | DE1117780B (en) |
| FR (1) | FR1248808A (en) |
| GB (1) | GB937863A (en) |
| NL (2) | NL248481A (en) |
-
0
- NL NL135895D patent/NL135895C/xx active
- NL NL248481D patent/NL248481A/xx unknown
-
1959
- 1959-02-17 GB GB5474/59A patent/GB937863A/en not_active Expired
-
1960
- 1960-02-13 CH CH161860A patent/CH389038A/en unknown
- 1960-02-15 DE DEN17888A patent/DE1117780B/en active Pending
- 1960-02-16 AT AT118260A patent/AT216574B/en active
- 1960-02-17 FR FR818737A patent/FR1248808A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL135895C (en) | |
| DE1117780B (en) | 1961-11-23 |
| NL248481A (en) | |
| AT216574B (en) | 1961-08-10 |
| CH389038A (en) | 1965-03-15 |
| FR1248808A (en) | 1960-12-23 |
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