GB739302A - Improvements in and relating to magnetrons - Google Patents

Improvements in and relating to magnetrons

Info

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
Application number
GB20363/53A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB739302A publication Critical patent/GB739302A/en
Expired legal-status Critical Current

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.
GB20363/53A 1952-07-25 1953-07-22 Improvements in and relating to magnetrons Expired GB739302A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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

Similar Documents

Publication Publication Date Title
US2428888A (en) High-frequency electric discharge device
KR900001495B1 (en) Magnetron
GB739302A (en) Improvements in and relating to magnetrons
GB736944A (en) Improvements in or relating to travelling wave tubes
GB627343A (en) Improvements in and relating to electron discharge devices of the magnetron type
GB640255A (en) Improvements in magnetron electron-discharge devices
GB650575A (en) Improvements in and relating to magnetrons
GB641086A (en) Improvements in or relating to magnetrons
GB654585A (en) Improvements in and relating to ultra high frequency electric discharge devices of the magnetron type
GB653750A (en) Improvements in or relating to magnetrons
GB564988A (en) Improvements in switches for high-frequency electrical oscillations
GB718089A (en) Improvements in or relating to magnetrons
GB799983A (en) Improvements in and relating to magnetrons
GB604400A (en) Improvements in or relating to electron tube for ultra-short electromagnetic oscillations
US2549499A (en) Tunable cavity resonator
GB762023A (en) Improvements in or relating to electron tubes of the crossed-fields type
US2774914A (en) Magnetrons
GB671469A (en) Amplitude modulation of magnetron
GB763073A (en) Improvements in and relating to high frequency diode magnetrons
US2837695A (en) Magnetrons
GB724268A (en) Improvements in or relating to multi-cavity anode structures for magnetrons
GB642931A (en) Improvements in and relating to magnetrons
GB678370A (en) Improvements in or relating to magnetron oscillators
SU105235A1 (en) Method for detecting defective insulators
GB617251A (en) Improvements in and relating to high-frequency magnetrons