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GB635832A - Improvements in or relating to magnetrons - Google Patents

Improvements in or relating to magnetrons

Info

Publication number
GB635832A
GB635832A GB5435/47A GB543547A GB635832A GB 635832 A GB635832 A GB 635832A GB 5435/47 A GB5435/47 A GB 5435/47A GB 543547 A GB543547 A GB 543547A GB 635832 A GB635832 A GB 635832A
Authority
GB
United Kingdom
Prior art keywords
tuning
rings
cavities
cavity
spaces
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
GB5435/47A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International 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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB635832A publication Critical patent/GB635832A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/30—Angle modulation by means of transit-time tube
    • H03C3/32—Angle modulation by means of transit-time tube the tube being a magnetron

Landscapes

  • Microwave Tubes (AREA)

Abstract

635,832. Magnetrons. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Feb. 25, 1947, No. 5435. Convention date, Aug. 8, 1944. [Class 39 (i)] A cavity magnetron has tuning means longitudinally disposed in at least one of its resonant cavities and projecting into end spaces, and means in the end spaces for supporting the tuning means and retaining them against longitudinal displacement in the cavities. In Fig. 2 the tuning elements comprise bimetallic strips 26 rigidly supported in each cavity from rings 18 in the anode end spaces. Fig. 6 shows a cross-section of one of the cavities; the strip 26 is wrapped round an insulator 23 which is heated by a filament 22 connected to the rings 18. As the filament is heated or cooled, the strip 26 winds or unwinds and alters the resonant frequency of the cavity. In the modification shown in Fig. 7, the tuning is electronic and the tuning elements are thermionic filaments 22a, the emission of which can be controlled either by the current through them or by grids 30 supported from rings 18a in the anode end-spaces.
GB5435/47A 1944-08-08 1947-02-25 Improvements in or relating to magnetrons Expired GB635832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US548530A US2617079A (en) 1944-08-08 1944-08-08 Tunable magnetron

Publications (1)

Publication Number Publication Date
GB635832A true GB635832A (en) 1950-04-19

Family

ID=24189236

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5435/47A Expired GB635832A (en) 1944-08-08 1947-02-25 Improvements in or relating to magnetrons

Country Status (4)

Country Link
US (1) US2617079A (en)
BE (1) BE473432A (en)
FR (1) FR947152A (en)
GB (1) GB635832A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781476A (en) * 1944-11-16 1957-02-12 Rca Corp Magnetron
US2774914A (en) * 1951-02-19 1956-12-18 English Electric Valve Co Ltd Magnetrons
GB696089A (en) * 1951-02-28 1953-08-26 M O Valve Co Ltd Improvements in or relating to magnetron oscillators
GB1096591A (en) * 1964-12-31 1967-12-29 M O Valve Co Ltd Improvements in or relating to electric valves

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2079809A (en) * 1933-02-06 1937-05-11 Telefunken Gmbh Electron discharge tube
US2027521A (en) * 1933-06-24 1936-01-14 Rca Corp Oscillation generator
US2163157A (en) * 1937-07-22 1939-06-20 Bell Telephone Labor Inc Electron discharge apparatus
GB537491A (en) * 1939-12-22 1941-06-24 Standard Telephon & Radio Ag Improvements in or relating to high frequency electron discharge apparatus
GB537518A (en) * 1939-12-22 1941-06-25 Standard Telephones Cables Ltd Improvements in or relating to electron discharge apparatus of the velocity modulated type
US2241976A (en) * 1940-04-25 1941-05-13 Gen Electric High frequency apparatus
NL63088C (en) * 1940-10-24
US2356414A (en) * 1941-02-26 1944-08-22 Rca Corp Tunable resonant cavity device
US2443179A (en) * 1941-06-24 1948-06-15 Submarine Signal Co Electrical apparatus
US2408234A (en) * 1941-11-26 1946-09-24 Raytheon Mfg Co Tunable magnetron
US2414496A (en) * 1942-03-24 1947-01-21 Sperry Gyroscope Co Inc High-frequency tube structure
US2409038A (en) * 1942-12-31 1946-10-08 Rca Corp Magnetron and circuit therefor
US2408903A (en) * 1943-06-12 1946-10-08 Sylvania Electric Prod Ultra high frequency generator
US2408817A (en) * 1943-11-29 1946-10-08 Sperry Gyroscope Co Inc Electron discharge apparatus
US2480462A (en) * 1944-01-07 1949-08-30 Western Electric Co Tunable magnetron
US2411984A (en) * 1944-05-27 1946-12-03 Raytheon Mfg Co Electron discharge device of the magnetron type
US2498763A (en) * 1944-06-15 1950-02-28 Westinghouse Electric Corp Magnetron

Also Published As

Publication number Publication date
US2617079A (en) 1952-11-04
FR947152A (en) 1949-06-24
BE473432A (en)

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