GB739302A - Improvements in and relating to magnetrons - Google Patents
Improvements in and relating to magnetronsInfo
- Publication number
- GB739302A GB739302A GB20363/53A GB2036353A GB739302A GB 739302 A GB739302 A GB 739302A GB 20363/53 A GB20363/53 A GB 20363/53A GB 2036353 A GB2036353 A GB 2036353A GB 739302 A GB739302 A GB 739302A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- neutral
- anode
- radius
- facing
- 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
- H01J25/54—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 only one cavity or other resonator, e.g. neutrode tubes
-
- 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
Landscapes
- Microwave Tubes (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
739,302. Magnetrons. GENERAL ELECTRIC CO. July 22, 1953 [July 25, 1952], No. 20363/53. Class 39 (1). In a magnetron with number of active resonant anode segments facing one part of the cathode and a neutral anode segment connected to a point of zero high frequency voltage facing circumferentially another part of the cathode, the ratio of cathode radius to anode radius is higher for the region of the space charge chamber defined by the active segments and lower for the region defined by the neutral segment. Space charge bunches are debunched in the neutral region and formed afresh in the active region. In a magnetron, Fig. 1, with anode segments 5 connected to a one and a half turn spiral loop 4 terminating a transmission line 2, 3 as described in Specification 655,041, and with a neutral anode segment 6 as described in Specification 657,487, the cathode comprises a non-emissive portion 8 of greater radius facing the anode segments 5, and an emissive portion 7 of lower radius facing the neutral electrode 6. Adjacent anode segments are connected to different turns of the loop. The cathode portions 7 and 8 need not be separate as shown, and may comprise a single member of oval or eggshaped cross-section having an internal heater, Fig. 3 (not shown). The cathode may comprise two contacting cylinders of larger and smaller diameters. In another modification, Fig. 4, the cathode 26 has a circular cross-section, but the neutral electrode 28 has a portion 29 of relatively large radius. The portion 29 may be a plane surface.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US300927A US2820923A (en) | 1952-07-25 | 1952-07-25 | Magnetron |
Publications (1)
Publication Number | Publication Date |
---|---|
GB739302A true GB739302A (en) | 1955-10-26 |
Family
ID=23161193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20363/53A Expired GB739302A (en) | 1952-07-25 | 1953-07-22 | Improvements in and relating to magnetrons |
Country Status (6)
Country | Link |
---|---|
US (1) | US2820923A (en) |
BE (1) | BE521710A (en) |
DE (1) | DE1007441B (en) |
FR (1) | FR1084418A (en) |
GB (1) | GB739302A (en) |
NL (1) | NL180102B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3015750A (en) * | 1959-10-01 | 1962-01-02 | Raytheon Co | Traveling wave electron discharge devices |
US3134047A (en) * | 1960-11-17 | 1964-05-19 | Gen Electric | Neutrode crossed field voltage tuned oscillator |
US3491291A (en) * | 1966-06-27 | 1970-01-20 | Beloit Iron Works | Resonant loop single conductor surface wave device |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1565416A (en) * | 1921-02-14 | 1925-12-15 | Westinghouse Electric & Mfg Co | Electron-tube oscillator |
US1889595A (en) * | 1929-10-08 | 1932-11-29 | Gen Electric | Electron discharge apparatus |
US2217745A (en) * | 1934-03-20 | 1940-10-15 | Rca Corp | Ultra high frequency oscillation circuits |
GB485073A (en) * | 1936-08-17 | 1938-05-13 | Telefunken Gmbh | Improvements in or relating to magnetrons |
US2198334A (en) * | 1937-06-09 | 1940-04-23 | Telefunken Gmbh | Electron discharge device |
US2227078A (en) * | 1937-11-11 | 1940-12-31 | Telefunken Gmbh | Heterodyne receiver for ultrashort waves |
GB582489A (en) * | 1941-12-31 | 1946-11-19 | Cossor Ltd A C | Improvements relating to magnetron electric discharge devices |
NL67113C (en) * | 1944-11-17 | |||
GB671319A (en) * | 1946-05-17 | 1952-04-30 | Mi O Valve Co Ltd | Improvements in apparatus for amplifying electrical oscillations of high frequency |
US2617968A (en) * | 1946-09-28 | 1952-11-11 | Csf | Magnetron tube |
FR999345A (en) * | 1946-11-20 | 1952-01-29 | ||
NL88043C (en) * | 1947-01-09 | |||
FR976786A (en) * | 1948-10-18 | 1951-03-22 | Csf | Electronic optical system for cathodes of electron beam tubes |
-
0
- BE BE521710D patent/BE521710A/xx unknown
- NL NLAANVRAGE8101011,A patent/NL180102B/en unknown
-
1952
- 1952-07-25 US US300927A patent/US2820923A/en not_active Expired - Lifetime
-
1953
- 1953-07-22 GB GB20363/53A patent/GB739302A/en not_active Expired
- 1953-07-24 FR FR1084418D patent/FR1084418A/en not_active Expired
- 1953-07-25 DE DEG12317A patent/DE1007441B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
NL180102B (en) | |
US2820923A (en) | 1958-01-21 |
FR1084418A (en) | 1955-01-19 |
BE521710A (en) | |
DE1007441B (en) | 1957-05-02 |
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