GB650575A - Improvements in and relating to magnetrons - Google Patents

Improvements in and relating to magnetrons

Info

Publication number
GB650575A
GB650575A GB5481/48A GB548148A GB650575A GB 650575 A GB650575 A GB 650575A GB 5481/48 A GB5481/48 A GB 5481/48A GB 548148 A GB548148 A GB 548148A GB 650575 A GB650575 A GB 650575A
Authority
GB
United Kingdom
Prior art keywords
magnetron
anode
output
cavities
block
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
GB5481/48A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB650575A publication Critical patent/GB650575A/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
    • H01J25/58—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

650,575. Magnetrons. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 24,1948, No. 5481. Convention date, June 4, 1946. [Class 39 (i)] A magnetron comprising an anode, a cathode and means for forming a cylindrical rotating space charge, has a plurality of resonant cavities with openings juxtaposed to an end surface of the space charge, formed in an auxiliary electrode or resonator member so that the high-frequency field and that of the anode may be independently adjusted. As shown, Fig. 3, a cylindrical anode 25 surrounds a central cathode 28, and adjacent each end is a block 23, 24 having radially extending slot-andhole resonant cavities. 35. The cavities in the block 23 are angularly displaced relatively to the cavities 35 in the block 24. The output load may be taken from both blocks 23, 24 by coupling loops 33, 34, or one loop may be used for the output, and the other may be free of load to act as a stabilizer for the operating frequency. Where the magnetron is used as an amplifier one loop may be used as an input and the other as an output. The cavity blocks form part of the magnetic circuit. In another embodiment the cavity blocks have radial rectangular cavity slots 65, Fig. 5, and alternate sector portions such as 66 or 68 are interconnected by straps 67, 69 located in a recess 70. The inner conductor of an input or output transmission line is connected to a hole 77 provided in one of the sectors. The lead to the central anode is hollow for the circulation of a cooling fluid. The resonant cavities may be formed by radially extending vanes and may be distributed asymmetrically about the central axis of the magnetron. The magnetron may be operated as a reactance device. Specifications 423,897, 424,746, [both in Group XXII], and 635,479 are referred to.
GB5481/48A 1946-06-04 1948-02-24 Improvements in and relating to magnetrons Expired GB650575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US674194A US2485401A (en) 1946-06-04 1946-06-04 Magnetron

Publications (1)

Publication Number Publication Date
GB650575A true GB650575A (en) 1951-02-28

Family

ID=24705673

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5481/48A Expired GB650575A (en) 1946-06-04 1948-02-24 Improvements in and relating to magnetrons

Country Status (2)

Country Link
US (1) US2485401A (en)
GB (1) GB650575A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483243A (en) * 1945-06-23
US2685046A (en) * 1949-11-01 1954-07-27 Rca Corp Magnetron
US2648800A (en) * 1949-12-02 1953-08-11 Collins Radio Co Double parallel plane magnetron
CH294489A (en) * 1950-03-20 1953-11-15 Csf Ultra-shortwave electron tube.
US2713653A (en) * 1951-01-18 1955-07-19 Elmer D Mcarthur High frequency magnetron
FR1088137A (en) * 1952-12-08 1955-03-03 Telefunken Gmbh Magnetron
NL100378C (en) * 1953-04-24
US3312859A (en) * 1962-09-10 1967-04-04 Gen Electric Crossed field transverse wave amplifier comprising transmission line
US3304463A (en) * 1962-09-10 1967-02-14 Gen Electric Crossed-field amplifier defining a transmission line
FR1391037A (en) * 1964-01-15 1965-03-05 Lignes Telegraph Telephon Improved method of making anode structures of magnetrons and magnetrons resulting therefrom

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2128237A (en) * 1934-12-24 1938-08-30 Pintsch Julius Kg Vacuum discharge tube
US2163157A (en) * 1937-07-22 1939-06-20 Bell Telephone Labor Inc Electron discharge apparatus
GB509102A (en) * 1937-10-08 1939-07-11 Electricitatsgesellschaft Sani Improvements in vacuum electric discharge apparatus
US2270777A (en) * 1939-04-06 1942-01-20 Telefunken Gmbh Ultra short wave electron discharge device system
US2412824A (en) * 1942-06-22 1946-12-17 Gen Electric Magnetron
US2411953A (en) * 1944-01-10 1946-12-03 Raytheon Mfg Co Electron discharge device of the magnetron type

Also Published As

Publication number Publication date
US2485401A (en) 1949-10-18

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