GB710929A - Improvements in or relating to travelling wave tubes - Google Patents
Improvements in or relating to travelling wave tubesInfo
- Publication number
- GB710929A GB710929A GB26081/52A GB2608152A GB710929A GB 710929 A GB710929 A GB 710929A GB 26081/52 A GB26081/52 A GB 26081/52A GB 2608152 A GB2608152 A GB 2608152A GB 710929 A GB710929 A GB 710929A
- Authority
- GB
- United Kingdom
- Prior art keywords
- collector
- cup
- disc
- gun
- tubes
- 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
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/06—Electron or ion guns
- H01J23/065—Electron or ion guns producing a solid cylindrical beam
-
- 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
- H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field
- H01J25/38—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field the forward travelling wave being utilised
Landscapes
- Microwave Tubes (AREA)
Abstract
710,929. Travelling-wave tubes. WESTERN ELECTRIC CO., Inc. Oct. 17, 1952 [Nov. 1, 1951], No. 26081/52. Class 39(1) A travelling-wave tube comprises a gun and collector each surrounded by separate magnetic housings 11, 12, aligning sleeves 13, 40 supported by the housings and carrying hollow tubes 54, and a helix 52 carried by support rods 53 extending between hollow tubes 54. In the form shown, the envelope comprises ceramic tube 10, preferably of steatite, sealed to cups 11, 12 of magnetic material preferably that known under the R.T.M. " Kovar ", which house and shield the gun and collector assemblies, by the method described in Specification 702,437. A solenoid surrounds tube 10 and has pole pieces surrounding cups 11, 12; the solenoid may be replaced by permanent magnets. Gun anode 16 is held in aperture 14 in cup 11 by means of aligning sleeve 13 and cup-shaped member 17; members 16, 17 may be integral. Indirectly heated cathode 19 having a spherical or spheroidal surface carries beam forming electrode 21 by wires or struts 26. 23 is a heat shield, and electrode 21 has apertures 25 to facilitate evacuation. The gun electrodes are maintained in position coaxially and radially by spring 28 and insulating rings 30, 31, 32. The heater leads may be sealed through an insulating disc sealed in turn through a U-sectioned expansion joint to cup 11. The seals between the leads and disc and expansion member and disc are made by an intermediate glaze which completely covers the external surfaces of the disc. A getter is connected across the heater leads. Aligning sleeve 40 is supported and insulated from cup 12 by disc 41 coated with insulating glaze 43 so that the helix and collector can carry different D.C. potentials. Alternatively they may have the same D.C. potentials as one another and as gun anode 16 in which case sleeve 40 is mounted directly in cup 12. Disc 41 has apertures 42 to facilitate evacuation, and is held in position by insulating ring 44 held by spring fingers 46 of cylinder 45. Hollow cup-shaped collector 47 is carried directly from the envelope and has an aperture at its base carrying a sealed off exhaust tube, Fig. 1 (not shown). The helix 52 is carried by ceramic rods 53 sealed by a glaze to metal tubes 54 which are held at their free ends in aligning sleeves 13, 40. In one method of assembly, tungsten and molybdenum wires are wound side by side on a molybdenum mandrel and the ends of the wires are secured to tungsten tubes 54. The assembly is placed in an alumina jig and three rods 53 glazed to. the helix and to tubes 54, after which the molybdenum parts are removed by etching. Loss material is applied to rods 53. Since cups 11, 12 are of magnetic material the magnetic field does not extend to the gun, except to a small degree through the central aperture, thereby facilitating focusing, or to the collector structure so that the beam expands before striking the inner sides of the collector. The latter feature reduces the escape of secondaries from the collector structure. The input and output guides contact cups 11, 12, helix 53 being coupled directly at the input end (via 54, 13, 11) and capacitatively at the output end (via 40, 41, 43, 12).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US254364A US2790105A (en) | 1951-11-01 | 1951-11-01 | Traveling wave tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB710929A true GB710929A (en) | 1954-06-23 |
Family
ID=22964010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26081/52A Expired GB710929A (en) | 1951-11-01 | 1952-10-17 | Improvements in or relating to travelling wave tubes |
Country Status (2)
Country | Link |
---|---|
US (1) | US2790105A (en) |
GB (1) | GB710929A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1209662B (en) * | 1955-05-12 | 1966-01-27 | Telefunken Patent | Constructive structure of a Lauffeld spiral tube |
DE1291837B (en) * | 1958-05-15 | 1969-04-03 | Varian Associates | Supply of high-frequency energy in an elongated transit time amplifier tube |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE532534A (en) * | 1953-03-26 | |||
US2936394A (en) * | 1955-07-18 | 1960-05-10 | Hughes Aircraft Co | Electron gun |
BE565904A (en) * | 1957-03-11 | |||
JP3780826B2 (en) * | 2000-07-07 | 2006-05-31 | 松下電器産業株式会社 | Electron gun for cathode ray tube |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB378681A (en) * | 1930-09-24 | 1932-08-18 | Ulrich Wolfgang Doering | Improvements in or relating to cathode ray tubes, especially for television purposes |
GB461450A (en) * | 1935-11-13 | 1937-02-17 | Gen Electric Co Ltd | Improvements in or relating to electric discharge devices |
FR954564A (en) * | 1946-10-22 | 1950-01-03 | ||
NL135247C (en) * | 1946-10-22 | |||
FR946147A (en) * | 1947-04-21 | 1949-05-24 | Cherifienne D Outil Et De Mate | Further development of dryer oven rollers |
US2632130A (en) * | 1947-11-28 | 1953-03-17 | Joseph F Hull | High current density beam tube |
US2611102A (en) * | 1948-11-13 | 1952-09-16 | Sylvania Electric Prod | Traveling wave tube |
NL89376C (en) * | 1950-06-17 | |||
US2619611A (en) * | 1951-05-29 | 1952-11-25 | Eitel Mccullough Inc | Electron tube apparatus |
-
1951
- 1951-11-01 US US254364A patent/US2790105A/en not_active Expired - Lifetime
-
1952
- 1952-10-17 GB GB26081/52A patent/GB710929A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1209662B (en) * | 1955-05-12 | 1966-01-27 | Telefunken Patent | Constructive structure of a Lauffeld spiral tube |
DE1291837B (en) * | 1958-05-15 | 1969-04-03 | Varian Associates | Supply of high-frequency energy in an elongated transit time amplifier tube |
Also Published As
Publication number | Publication date |
---|---|
US2790105A (en) | 1957-04-23 |
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