GB631339A - Improvements in magnetrons - Google Patents

Improvements in magnetrons

Info

Publication number
GB631339A
GB631339A GB3073/47A GB307347A GB631339A GB 631339 A GB631339 A GB 631339A GB 3073/47 A GB3073/47 A GB 3073/47A GB 307347 A GB307347 A GB 307347A GB 631339 A GB631339 A GB 631339A
Authority
GB
United Kingdom
Prior art keywords
envelope
anode
discs
disc
sealed
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
GB3073/47A
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 GB631339A publication Critical patent/GB631339A/en
Expired legal-status Critical Current

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
    • H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/18—Resonators
    • H01J23/20—Cavity resonators; Adjustment or tuning thereof
    • H01J23/213—Simultaneous tuning of more than one resonator, e.g. resonant cavities of a magnetron
    • 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

Landscapes

  • Microwave Tubes (AREA)

Abstract

631,339. Magnetrons. BRITISH THOMSON - HOUSTON CO., Ltd. Jan. 31, 1947, No. 3073. Convention date, May 12, 1945. [Class 39 (i)] [Also in Group XL (b)] In a magnetron having tuning discs at each end of the anode structure and an output loop in one of the openings in the anode, the tuning discs are shaped to increase the coupling to the output as the frequency is increased. The Figures show a magnetron with a copper envelope 1 which has radial vanes 5 which define the anode cavities. Alternate cavities are joined together by anode straps 7, 8 and there is an output loop 18 in one of them. Tuning discs 10, 11 may be moved up and down from outside the envelope by the screw cap 18 and bellows 15. The disc 10 is provided with a paddle-like extension 19 and the disc 11 has an opening 20 aligned with the coupling loop 18. A depending flange 21 surrounding the opening 20 and an extension 22 on the lower face of the disc 11 may also be provided, the extension 22 conforming to the space between the vanes. The paddle 19 and opening 20, together with members 21, 22 serve to alter the output coupling as the frequency is altered. The discs are connected to the metal envelope by flexible leads 23. The cathode 6 is supported bv tube 24 sealed to sleeve 25 which is sealed to a glass sleeve 26 supported from an upstanding sleeve 27 formed on the envelope. The heater lead 29 runs through the centre of tube 24 and is supported by insulator 30 and sealed at the end through a body of glass 31. Specification 644,852 is referred to.
GB3073/47A 1944-12-02 1947-01-31 Improvements in magnetrons Expired GB631339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US566288A US2424496A (en) 1944-12-02 1944-12-02 Tunable magnetron of the resonator type

Publications (1)

Publication Number Publication Date
GB631339A true GB631339A (en) 1949-11-01

Family

ID=24262266

Family Applications (2)

Application Number Title Priority Date Filing Date
GB32492/45A Expired GB644852A (en) 1944-12-02 1945-11-30 Improvements in and relating to electric discharge devices
GB3073/47A Expired GB631339A (en) 1944-12-02 1947-01-31 Improvements in magnetrons

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB32492/45A Expired GB644852A (en) 1944-12-02 1945-11-30 Improvements in and relating to electric discharge devices

Country Status (4)

Country Link
US (1) US2424496A (en)
BE (1) BE480796A (en)
FR (2) FR57878E (en)
GB (2) GB644852A (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB612415A (en) * 1944-03-29 1948-11-12 Marconi Wireless Telegraph Co Magnetron electron discharge devices
US2498763A (en) * 1944-06-15 1950-02-28 Westinghouse Electric Corp Magnetron
US2527699A (en) * 1944-10-10 1950-10-31 Dwain B Bowen Tunable oscillator
US2478534A (en) * 1944-12-13 1949-08-09 Raytheon Mfg Co Electron discharge device of the cavity resonator type
US2501196A (en) * 1945-03-20 1950-03-21 Raytheon Mfg Co Electron discharge device
US2477317A (en) * 1945-03-21 1949-07-26 Raytheon Mfg Co Electron discharge device
US2624862A (en) * 1945-05-09 1953-01-06 Everhart Edgar Tunable strapped magnetron
US2482541A (en) * 1945-05-12 1949-09-20 Gen Electric High-frequency electrical apparatus
US2506955A (en) * 1945-05-14 1950-05-09 Bell Telephone Labor Inc Tunable high-frequency circuits
US2481171A (en) * 1945-08-20 1949-09-06 Raytheon Mfg Co Electron discharge device
US2554272A (en) * 1945-10-31 1951-05-22 Westinghouse Electric Corp Split anode magnetron with tuning ring
US2666165A (en) * 1946-01-03 1954-01-12 Hutchinson Franklin Tunable magnetron oscillator
US2606307A (en) * 1946-01-29 1952-08-05 Marshall C Pease Tunable magnetron
US2624865A (en) * 1946-03-01 1953-01-06 Nathan P Nichols Plug-in magnetron and mount therefor
US2719240A (en) * 1946-03-14 1955-09-27 Laurence R Walker Cathode structure
US2644106A (en) * 1946-04-30 1953-06-30 Us Sec War Tuning and strapping mechanism for magnetrons
US2529950A (en) * 1946-05-10 1950-11-14 Raytheon Mfg Co Tunable electron discharge device
NL80745C (en) * 1946-05-13
FR963882A (en) * 1947-04-03 1950-07-24
US2509265A (en) * 1947-08-13 1950-05-30 Rca Corp Tunable cavity resonator magnetron
US2621311A (en) * 1947-12-26 1952-12-09 Raytheon Mfg Co Mechanical movement
US2644139A (en) * 1947-12-27 1953-06-30 Westinghouse Electric Corp Multifrequency tau-r box
US2720628A (en) * 1950-09-05 1955-10-11 Beverly D Kumpfer Tunable cavity resonator
FR1082808A (en) * 1950-12-28 1955-01-03 Int Standard Electric Corp Tuning device for magnetron
US2934675A (en) * 1955-11-10 1960-04-26 Carlton G Lehr Magnetron tuning
FR2212634B1 (en) * 1972-12-29 1976-10-29 Thomson Csf
GB9002593D0 (en) * 1990-02-06 1990-10-17 Eev Ltd Magnetrons

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2167201A (en) * 1935-06-28 1939-07-25 Pintsch Julius Kg Electron tube
US2115521A (en) * 1936-04-30 1938-04-26 Telefunken Gmbh Magnetron
US2252118A (en) * 1936-06-18 1941-08-12 Pintsch Julius Kg Electron tube
US2270777A (en) * 1939-04-06 1942-01-20 Telefunken Gmbh Ultra short wave electron discharge device system
US2408234A (en) * 1941-11-26 1946-09-24 Raytheon Mfg Co Tunable magnetron
US2408235A (en) * 1941-12-31 1946-09-24 Raytheon Mfg Co High efficiency magnetron
US2408237A (en) * 1942-03-06 1946-09-24 Raytheon Mfg Co Tunable magnetron
US2408238A (en) * 1943-06-07 1946-09-24 Raytheon Mfg Co Space discharge device

Also Published As

Publication number Publication date
FR955107A (en) 1950-01-10
US2424496A (en) 1947-07-22
GB644852A (en) 1950-10-18
BE480796A (en)
FR57878E (en) 1953-09-18

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