GB623766A - Improvements in electron discharge devices and particularly magnetrons - Google Patents
Improvements in electron discharge devices and particularly magnetronsInfo
- Publication number
- GB623766A GB623766A GB33284/46A GB3328446A GB623766A GB 623766 A GB623766 A GB 623766A GB 33284/46 A GB33284/46 A GB 33284/46A GB 3328446 A GB3328446 A GB 3328446A GB 623766 A GB623766 A GB 623766A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guide
- anode
- wave
- recesses
- slot
- 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
- H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
- H01J25/52—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
- H01J25/58—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode having a number of resonators; having a composite resonator, e.g. a helix
- H01J25/587—Multi-cavity magnetrons
Abstract
623,766. Magnetrons. WESTERN ELECTRIC CO., Inc. Nov. 8, 1946, No. 33284. Convention date, Feb. 12. [Class 39 (i)] [Also in Group XL (b)] The anode of a cavity magnetron has a wave-guide leading to one of the cavities; the wave-guide is defined by a slot leading into the cavity and by recesses at the top and bottom of the anode block, the slot intersecting the recesses at right angles. Fig. 6 shows an exploded view of an anode. The main anode block 10 contains the resonant cavities 12 which may be alternately coupled by anode straps 15, 16. The block 10 is provided also with a slot 17 extending to one of the cavities and with a pair of recesses 18, one on each face, which extend to the central recesses 14 above and below the resonators. The blocks 19, 20 are sealed to 10, as by brazing, thus defining an H-section wave-guide, of which the recesses 18 form the limbs and the slot 17 the cross-piece, communicating with one of the resonant cavities. This wave-guide is a quarter wavelength long. Fig. 2 shows a cross-section of the complete magnetron; it can be seen that the H-section wave-guide leads into a rectangular wave-guide 53 which is hermetically sealed by a cup member 54 containing a circular window 55 of glass transparent to the frequencies used. A coupling flange 57 is provided for connection to an external wave-guide; the coupling 57 and the guide 53 are provided with opposed annular slots 60, 61 to form choke joints which minimize power losses at the junction. The hollow polepieces 27 of the magnet fit into the apertures in the anode blocks 19, 20. One of the polepieces is sealed by the exhaust tube 29 and the other carries the indirectly heated cathode which is shown in detail in Fig. 3. The cathode tube 30 may bo of nickel or molybdenum and has an emissive coating 34 ; it carries two magnetic collars 39 and is attached to the support 32 by a sleeve 33. The sleeve 33 and heat radiator 40 may be of copper coated with zirconium. The anode is provided with cooling pins 26 which fit into the slots 25 cut in the blocks 19, 10, 20 on three sides. Specification 586,430 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US647151A US2466922A (en) | 1946-02-12 | 1946-02-12 | Electron discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB623766A true GB623766A (en) | 1949-05-23 |
Family
ID=24595892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33284/46A Expired GB623766A (en) | 1946-02-12 | 1946-11-08 | Improvements in electron discharge devices and particularly magnetrons |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2466922A (en) |
| GB (1) | GB623766A (en) |
| NL (1) | NL66078C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2259605A (en) * | 1991-09-03 | 1993-03-17 | Burle Technologies | Magnetron with cooled pole piece |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2639404A (en) * | 1945-04-03 | 1953-05-19 | Us Sec War | Magnetron circuit |
| US2719240A (en) * | 1946-03-14 | 1955-09-27 | Laurence R Walker | Cathode structure |
| GB643655A (en) * | 1946-09-03 | 1950-09-27 | Amherst Felix Home Thomson | Improvements in or relating to magnetron electron discharge devices |
| US2579654A (en) * | 1947-06-04 | 1951-12-25 | Raytheon Mfg Co | Electron-discharge device for microwave amplification |
| US2524001A (en) * | 1948-05-19 | 1950-09-26 | Raytheon Mfg Co | Compressed cathode support structure |
| US2532215A (en) * | 1948-05-26 | 1950-11-28 | Raytheon Mfg Co | Cathode structure |
| US2501354A (en) * | 1948-08-20 | 1950-03-21 | Sylvania Electric Prod | Cathode |
| GB668141A (en) * | 1950-08-17 | 1952-03-12 | British Thomson Houston Co Ltd | Improvements relating to magnetrons |
| US2727180A (en) * | 1950-09-20 | 1955-12-13 | Westinghouse Electric Corp | Microwave reactance tube |
| BE521168A (en) * | 1950-12-18 | |||
| BE510398A (en) * | 1951-04-05 | |||
| BE510664A (en) * | 1951-04-14 | |||
| US2915670A (en) * | 1954-07-22 | 1959-12-01 | Varian Associates | Klystron amplifier |
| US2909701A (en) * | 1955-07-06 | 1959-10-20 | Westinghouse Electric Corp | Cathode heater system for electron discharge device |
| US2887615A (en) * | 1956-01-16 | 1959-05-19 | M O Valve Co Ltd | Magnetrons |
| NL298752A (en) * | 1962-10-19 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2404086A (en) * | 1942-10-07 | 1946-07-16 | Westinghouse Electric Corp | Coupling device |
| US2416899A (en) * | 1943-09-24 | 1947-03-04 | Raytheon Mfg Co | Electronic discharge device of the magnetron type |
| FR962864A (en) * | 1944-02-14 | 1950-06-22 |
-
0
- NL NL66078D patent/NL66078C/xx active
-
1946
- 1946-02-12 US US647151A patent/US2466922A/en not_active Expired - Lifetime
- 1946-11-08 GB GB33284/46A patent/GB623766A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2259605A (en) * | 1991-09-03 | 1993-03-17 | Burle Technologies | Magnetron with cooled pole piece |
| GB2259605B (en) * | 1991-09-03 | 1995-04-19 | Burle Technologies | Magnetron with cooled pole piece |
Also Published As
| Publication number | Publication date |
|---|---|
| NL66078C (en) | |
| US2466922A (en) | 1949-04-12 |
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