GB1061715A - Electron-emitting cathode assemblies - Google Patents

Electron-emitting cathode assemblies

Info

Publication number
GB1061715A
GB1061715A GB25074/66A GB2507466A GB1061715A GB 1061715 A GB1061715 A GB 1061715A GB 25074/66 A GB25074/66 A GB 25074/66A GB 2507466 A GB2507466 A GB 2507466A GB 1061715 A GB1061715 A GB 1061715A
Authority
GB
United Kingdom
Prior art keywords
electron
cathode assemblies
emitting cathode
cathode
ceramic
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
GB25074/66A
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.)
SFD LAB Inc
Original Assignee
SFD LAB Inc
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
Priority claimed from US221796A external-priority patent/US3223876A/en
Application filed by SFD LAB Inc filed Critical SFD LAB Inc
Publication of GB1061715A publication Critical patent/GB1061715A/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
    • H01J25/55—Coaxial cavity magnetrons
    • 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
    • H01J23/04—Cathodes
    • H01J23/05—Cathodes having a cylindrical emissive surface, e.g. cathodes for magnetrons
    • 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
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy

Landscapes

  • Microwave Tubes (AREA)
  • Lasers (AREA)

Abstract

1,061,715. Cathode heater supporting. S-F-D LABORATORIES Inc. Aug. 9, 1963 [Sept. 6, 1962], No. 25074/66. Divided out of 1,061,711. Heading H5H. [Also in Division H1] A helical bare filament heater 63 is supported within the body 9 of a magnetron indirectlyheated annular cathode by means of longitudinal insulator, e.g. alumina ceramic, blocks or, as shown, ceramic-coated wires 65.
GB25074/66A 1962-08-10 1963-08-09 Electron-emitting cathode assemblies Expired GB1061715A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR1372678T
US216228A US3289035A (en) 1962-08-10 1962-08-10 Reverse magnetron having means to suppress undersired modes
US219702A US3255377A (en) 1962-08-10 1962-08-27 Reverse magnetron with cathode support structure
US221796A US3223876A (en) 1962-09-06 1962-09-06 Cathode heater assembly for use in strong d.c. magnetic fields

Publications (1)

Publication Number Publication Date
GB1061715A true GB1061715A (en) 1967-03-15

Family

ID=27447047

Family Applications (3)

Application Number Title Priority Date Filing Date
GB25073/66A Expired GB1061714A (en) 1962-08-10 1963-08-09 Magnetrons
GB31643/63A Expired GB1061711A (en) 1962-08-10 1963-08-09
GB25074/66A Expired GB1061715A (en) 1962-08-10 1963-08-09 Electron-emitting cathode assemblies

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB25073/66A Expired GB1061714A (en) 1962-08-10 1963-08-09 Magnetrons
GB31643/63A Expired GB1061711A (en) 1962-08-10 1963-08-09

Country Status (2)

Country Link
US (2) US3289035A (en)
GB (3) GB1061714A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414761A (en) * 1965-09-16 1968-12-03 S F D Lab Dither tuner for a coaxial magnetron
US3458754A (en) * 1966-05-03 1969-07-29 Gen Electric Inverted cross field device having an arcuately segmented cathode
US3441792A (en) * 1966-07-08 1969-04-29 Sfd Lab Inc Reverse magnetron having a tie ring stiffening structure for its cathode support fingers
US3473072A (en) * 1967-03-01 1969-10-14 Nikolai Dmitrievich Ivano Mount for electric vacuum devices
US3805318A (en) * 1969-08-08 1974-04-23 R Marquette Brush cleaning device
US4620170A (en) * 1984-12-19 1986-10-28 Varian Associates, Inc. Means for liquid cooling a microwave window
US8446096B1 (en) * 2009-10-02 2013-05-21 The United States Of America As Represented By The Secretary Of The Navy Terahertz (THz) reverse micromagnetron

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2335818A (en) * 1942-09-29 1943-11-30 Rca Corp Cathode assembly
US2482495A (en) * 1943-11-27 1949-09-20 Westinghouse Electric Corp Magnetron
NL141660B (en) * 1947-07-31 Ventron Corp PROCESS FOR PREPARING A SENSITIVE REDOX SYSTEM.
GB691139A (en) * 1951-01-08 1953-05-06 English Electric Valve Co Ltd Improvements in or relating to magnetron oscillators
GB727742A (en) * 1951-06-07 1955-04-06 Csf Improvements in or relating to resonant cavity magnetrons
CH309019A (en) * 1952-12-30 1955-08-15 Patelhold Patentverwertung Tuning device for single-circuit magnetron.
US2951182A (en) * 1957-11-25 1960-08-30 Bell Telephone Labor Inc Magnetron
US3062982A (en) * 1959-12-31 1962-11-06 Gen Electric Electrode assembly support

Also Published As

Publication number Publication date
GB1061714A (en) 1967-03-15
US3255377A (en) 1966-06-07
US3289035A (en) 1966-11-29
GB1061711A (en) 1967-03-15

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