GB703172A - Improvements in or relating to magnetrons - Google Patents

Improvements in or relating to magnetrons

Info

Publication number
GB703172A
GB703172A GB855/51A GB85551A GB703172A GB 703172 A GB703172 A GB 703172A GB 855/51 A GB855/51 A GB 855/51A GB 85551 A GB85551 A GB 85551A GB 703172 A GB703172 A GB 703172A
Authority
GB
United Kingdom
Prior art keywords
cathode
sheath
piece
pole
magnetic
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
GB855/51A
Inventor
Frederick Charles Thompson
Maurice Esterson
Arthur James Young
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve 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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Priority to ES0201318A priority Critical patent/ES201318A1/en
Publication of GB703172A publication Critical patent/GB703172A/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
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/10—Magnet systems for directing or deflecting the discharge along a desired path, e.g. a spiral path
    • 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)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

703,172. Magnetrons. ENGLISH ELECTRIC VALVE CO., Ltd. Oct. 29, 1951 [Jan. 11, 1951], No. 855/51. Class 39(1) A packaged magnetron (i.e. a magnetron in which part of the envelope is of ferromagnetic material) wherein the cathode structure includes a cathode support member mounted within a hole in a pole piece is characterized in that the support member is mounted in a sheath (separate from the pole-piece) of magnetic material at cathode potential and arranged to have good thermal insulation with respect to the cathode. In Fig. 3 the cathode 1 is attached to a support tube 7 which is fitted within a sheath 8 of magnetic material which is insulated from the polepiece 6a and is at cathode potential. The sheath 8 may be undercut at 81 so that it is thermally insulated from the cathode by a long conducting path and does not get sufficiently hot to be capable of thermionic emission; the material of the sheath should be such that it remains magnetic at the operating temperature. The lower pole-piece 6b may be provided with a sheath 8a to preserve the symmetry of the magnetic field.
GB855/51A 1951-01-11 1951-01-11 Improvements in or relating to magnetrons Expired GB703172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0201318A ES201318A1 (en) 1951-01-11 1952-01-08 Improvements in magnetrones (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB307460X 1951-01-11
GB291051X 1951-10-29

Publications (1)

Publication Number Publication Date
GB703172A true GB703172A (en) 1954-01-27

Family

ID=26259749

Family Applications (2)

Application Number Title Priority Date Filing Date
GB854/51A Expired GB706848A (en) 1951-01-11 1951-01-11 Improvements in or relating to magnetrons
GB855/51A Expired GB703172A (en) 1951-01-11 1951-01-11 Improvements in or relating to magnetrons

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB854/51A Expired GB706848A (en) 1951-01-11 1951-01-11 Improvements in or relating to magnetrons

Country Status (4)

Country Link
US (2) US2716711A (en)
CH (1) CH307460A (en)
FR (2) FR1047143A (en)
GB (2) GB706848A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846618A (en) * 1953-01-26 1958-08-05 Litton Industries Inc Magnetron
NL89999C (en) * 1955-01-03
DE1086815B (en) * 1956-01-23 1960-08-11 Licentia Gmbh Cooling system for membrane anode tube
US2899604A (en) * 1956-03-28 1959-08-11 Magnetrons

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB509102A (en) * 1937-10-08 1939-07-11 Electricitatsgesellschaft Sani Improvements in vacuum electric discharge apparatus
USRE22389E (en) * 1940-07-13 1943-11-02 Electron beam concentrating
US2406276A (en) * 1942-11-13 1946-08-20 Gen Electric Electric discharge device
US2419172A (en) * 1943-11-19 1947-04-15 Rca Corp Electron discharge device having coupled coaxial line resonators
US2452077A (en) * 1944-01-19 1948-10-26 Raytheon Mfg Co Electric discharge device
US2463524A (en) * 1945-03-10 1949-03-08 Raytheon Mfg Co Electron discharge device
US2497436A (en) * 1947-04-26 1950-02-14 Raytheon Mfg Co Electron discharge device
US2553425A (en) * 1948-03-13 1951-05-15 Raytheon Mfg Co Electron discharge device of the magnetron type

Also Published As

Publication number Publication date
GB706848A (en) 1954-04-07
US2716711A (en) 1955-08-30
FR1047586A (en) 1953-12-15
US2727185A (en) 1955-12-13
CH307460A (en) 1955-05-31
FR1047143A (en) 1953-12-11

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