GB941691A - Reflex klystron - Google Patents
Reflex klystronInfo
- Publication number
- GB941691A GB941691A GB23302/62A GB2330262A GB941691A GB 941691 A GB941691 A GB 941691A GB 23302/62 A GB23302/62 A GB 23302/62A GB 2330262 A GB2330262 A GB 2330262A GB 941691 A GB941691 A GB 941691A
- Authority
- GB
- United Kingdom
- Prior art keywords
- distance
- cathode
- portions
- emissive surface
- circular
- 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
- H01J25/22—Reflex klystrons, i.e. tubes having one or more resonators, with a single reflection of the electron stream, and in which the stream is modulated mainly by velocity in the modulator zone
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/04—Cathodes
Landscapes
- Microwave Tubes (AREA)
Abstract
941,691. Velocity-modulated beam tubes. C.S.F.-COMPAGNIE GENERALE DES TELEGRAPHIE SANS FIL. June 18, 1962 [June 21, 1961], No. 23302/62. Heading H1D. A reflex klystron includes a cathode having two portions of its emissive surface axially spaced by such a distance that the transit time of the electrons along said distance is substantially equal to half the period of the operating oscillation. In one form, Fig. 7, a central portion 10 of a circular cathode 11 is depressed a distance d. Alternatively, Fig. 9, the emissive surface is formed by three portions 12, 13, 14, the axial separation of portions 12, 14 being a distance d. In other embodiments, a semi-circular plate of thickness d is placed upon a circular support, sectors of a circle are symmetrically placed on a circular support so as to give alternate raised and lowered portions of the emissive surface, or the cathode is an inclined disc 14, Fig. 11. The axial distance d is arranged to be substantially equal, in millimeters, to 50(V 0 ) ¢/f, where V o is the anode voltage of the klystron in volts, and f is its operating frequency in Mc/s. It is stated that such a cathode minimizes the phenomenon of power hysteresis, that is, the power developed is not single-valued for a given reflector voltage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR865579A FR1300317A (en) | 1961-06-21 | 1961-06-21 | Reflex klystron cathode structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB941691A true GB941691A (en) | 1963-11-13 |
Family
ID=8757700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23302/62A Expired GB941691A (en) | 1961-06-21 | 1962-06-18 | Reflex klystron |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3273004A (en) |
| FR (1) | FR1300317A (en) |
| GB (1) | GB941691A (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604605A (en) * | 1942-01-29 | 1952-07-22 | Sperry Corp | High-frequency tube structure |
| FR937351A (en) * | 1946-12-13 | 1948-08-16 | Materiel Telephonique | Thermionic cathodes |
| US2518954A (en) * | 1948-02-12 | 1950-08-15 | Westinghouse Electric Corp | Electron discharge device |
| US2725499A (en) * | 1949-06-21 | 1955-11-29 | Bell Telephone Labor Inc | High frequency amplifying device |
-
1961
- 1961-06-21 FR FR865579A patent/FR1300317A/en not_active Expired
-
1962
- 1962-06-15 US US202802A patent/US3273004A/en not_active Expired - Lifetime
- 1962-06-18 GB GB23302/62A patent/GB941691A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3273004A (en) | 1966-09-13 |
| FR1300317A (en) | 1962-08-03 |
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