GB660986A - Improvements in or relating to magnetrons - Google Patents

Improvements in or relating to magnetrons

Info

Publication number
GB660986A
GB660986A GB5957/48A GB595748A GB660986A GB 660986 A GB660986 A GB 660986A GB 5957/48 A GB5957/48 A GB 5957/48A GB 595748 A GB595748 A GB 595748A GB 660986 A GB660986 A GB 660986A
Authority
GB
United Kingdom
Prior art keywords
magnetron
magnetrons
magnetic field
providing
make
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
GB5957/48A
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.)
US Department of Commerce
Original Assignee
US Department of Commerce
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 US Department of Commerce filed Critical US Department of Commerce
Publication of GB660986A publication Critical patent/GB660986A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/042—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant with reactance tube
    • 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

Abstract

660,986. Magnetrons. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948 [Aug. 8, 1945], No. 5957/48. Drawings to Specification. Class 39 (i). [Also in Group XL (c)] A reactance controlled oscillator comprises a first multi-cavity magnetron, a second multicavity magnetron, means for inter-coupling the magnetrons, means for providing a magnetic field and anode voltage such as to make the first magnetron oscillate, and means for providing an anode voltage for the second magnetron below " cut-off " voltage and a magnetic field adapted to make the second magnetron act as a reactance influencing the frequency of oscillation of the first magnetron. The two magnetrons are preferably tightly coupled, as n# by a concentric line having a length -, and the 2 load is preferably loosely coupled to the first magnetron. The magnetic field of the second magnetron should be between 3B 0 /2 and 3B 0 and 10,700 is preferably 2B 0 , where B 0 = 10,700/# and # is the operating wavelength in centimetres.
GB5957/48A 1945-08-08 1948-02-27 Improvements in or relating to magnetrons Expired GB660986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US609651A US2472200A (en) 1945-08-08 1945-08-08 Variable frequency magnetron circuit

Publications (1)

Publication Number Publication Date
GB660986A true GB660986A (en) 1951-11-14

Family

ID=24441712

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5957/48A Expired GB660986A (en) 1945-08-08 1948-02-27 Improvements in or relating to magnetrons

Country Status (2)

Country Link
US (1) US2472200A (en)
GB (1) GB660986A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527770A (en) * 1945-10-10 1950-10-31 William V Smith Magnetron pilot cavity resonator
US2658148A (en) * 1946-02-18 1953-11-03 John E Evans Generator coupling circuit
US2602156A (en) * 1947-06-28 1952-07-01 Rca Corp Modulated microwave generator
US2667580A (en) * 1949-10-20 1954-01-26 Charles V Litton Magnetron with valence electrode
GB731127A (en) * 1952-07-18 1955-06-01 Ericsson Telefon Ab L M Improvements in or relating to electronic switching devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241976A (en) * 1940-04-25 1941-05-13 Gen Electric High frequency apparatus
US2408236A (en) * 1941-12-17 1946-09-24 Raytheon Mfg Co Magnetron casing
US2404212A (en) * 1942-12-24 1946-07-16 Gen Electric Magnetron
US2412372A (en) * 1943-10-26 1946-12-10 Rca Corp Magnetron

Also Published As

Publication number Publication date
US2472200A (en) 1949-06-07

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