GB633831A - Improvements in electron-discharge apparatus utilising electron-velocity modulation - Google Patents
Improvements in electron-discharge apparatus utilising electron-velocity modulationInfo
- Publication number
- GB633831A GB633831A GB24377/46A GB2437746A GB633831A GB 633831 A GB633831 A GB 633831A GB 24377/46 A GB24377/46 A GB 24377/46A GB 2437746 A GB2437746 A GB 2437746A GB 633831 A GB633831 A GB 633831A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electron
- resonator
- grids
- fundamental frequency
- velocity
- 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
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
- H01J25/12—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with pencil-like electron stream in the axis of the resonators
Landscapes
- Microwave Tubes (AREA)
- Particle Accelerators (AREA)
Abstract
633,831. Velocity-modulated tubes. SPERRY GYROSCOPE CO., Inc. Aug. 16, 1946, No. 24377. Convention date, Aug. 30, 1945. [Class 39 (i)] A velocity-modulation electron discharge device has a field-free drift space with a length such that the transit time is less than one cycle of the fundamental frequency, and a circuit tuned to a harmonic of the fundamental frequency and excited by the density modulated electron stream, the circuit energy being extracted at the harmonic frequency. The maximum amplitude of the input voltage is greater than the beam voltage and a proportion of the electrons in the stream are reversed in direction. As shown in Fig. 1, electrons from cathode 11 are accelerated by grid 12 and control electrode 15 and flow successively through buncher grids 13, 14 along the drift tube 16 and through the output grids 17, 18 to electrode 19 which has cooling fins. A cavity resonator 21 surrounds the tubular member 25 containing the electron streams and an extension 26 to the member 25 provides a fixed capacity loading reducing the necessary size of resonator 21, another tubular member 27 providing an additional lumped capacitance. The input terminal comprises a loop 31 and a coaxial line section 29, 30. The output resonator 32 is connected between grids 17, 18 and the output terminal 37 is also a loop and coaxial line. Resonator 32 is designed and adjusted to be resonant at the desired harmonic frequency. The theoretical optimum value for the length of the drift tube 16 is stated to be 2 - or 0.64 the distance travelled by the electron # in one cycle of the fundamental frequency.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US613557A US2466704A (en) | 1945-08-30 | 1945-08-30 | Frequency multiplier apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB633831A true GB633831A (en) | 1949-12-30 |
Family
ID=24457763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24377/46A Expired GB633831A (en) | 1945-08-30 | 1946-08-16 | Improvements in electron-discharge apparatus utilising electron-velocity modulation |
Country Status (3)
Country | Link |
---|---|
US (1) | US2466704A (en) |
FR (1) | FR933105A (en) |
GB (1) | GB633831A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2621304A (en) * | 1944-09-19 | 1952-12-09 | Int Standard Electric Corp | Vacuum tube with ultrahigh frequency |
US2680209A (en) * | 1950-05-12 | 1954-06-01 | Sperry Corp | High-frequency apparatus |
US2788497A (en) * | 1951-05-31 | 1957-04-09 | Westinghouse Electric Corp | Ridged waveguide matching device |
US2747129A (en) * | 1952-04-16 | 1956-05-22 | Ludwig J Mayer | Frequency multiplier |
US2807746A (en) * | 1954-02-23 | 1957-09-24 | Varian Associates | Electron tube apparatus |
US3383590A (en) * | 1965-04-23 | 1968-05-14 | Atomic Energy Commission Usa | Resonant cavity-type monitor for measuring the bunch length of a beam of charged particles in a particle accelerator |
US3488550A (en) * | 1967-07-11 | 1970-01-06 | Trw Inc | High power resonant cavity tube |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2244747A (en) * | 1938-05-24 | 1941-06-10 | Beard Of Trustees Of The Lelan | Thermionic vacuum tube and circuits |
NL62806C (en) * | 1940-05-17 | |||
US2278210A (en) * | 1940-07-05 | 1942-03-31 | Bell Telephone Labor Inc | Electron discharge device |
US2305883A (en) * | 1940-07-13 | 1942-12-22 | Int Standard Electric Corp | Frequency multiplier |
BE468391A (en) * | 1941-03-11 | |||
US2398829A (en) * | 1941-05-28 | 1946-04-23 | Rca Corp | Electron discharge device |
US2405611A (en) * | 1942-06-26 | 1946-08-13 | Bell Telephone Labor Inc | Electron beam amplifier |
-
1945
- 1945-08-30 US US613557A patent/US2466704A/en not_active Expired - Lifetime
-
1946
- 1946-08-16 GB GB24377/46A patent/GB633831A/en not_active Expired
- 1946-08-30 FR FR933105D patent/FR933105A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR933105A (en) | 1948-04-12 |
US2466704A (en) | 1949-04-12 |
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