GB1078508A - Improvements in or relating to magnetrons - Google Patents

Improvements in or relating to magnetrons

Info

Publication number
GB1078508A
GB1078508A GB33991/65A GB3399165A GB1078508A GB 1078508 A GB1078508 A GB 1078508A GB 33991/65 A GB33991/65 A GB 33991/65A GB 3399165 A GB3399165 A GB 3399165A GB 1078508 A GB1078508 A GB 1078508A
Authority
GB
United Kingdom
Prior art keywords
rotor
teeth
strap
straps
projecting
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
GB33991/65A
Inventor
Brian Frederick Cooper
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 GB33991/65A priority Critical patent/GB1078508A/en
Priority to US566612A priority patent/US3441796A/en
Priority to CH1084966A priority patent/CH447399A/en
Priority to FR72113A priority patent/FR1498510A/en
Priority to DE19661541002 priority patent/DE1541002A1/en
Priority to NL6611176A priority patent/NL6611176A/xx
Publication of GB1078508A publication Critical patent/GB1078508A/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
    • 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
    • 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
    • H01J23/22—Connections between resonators, e.g. strapping for connecting resonators 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)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

1,078,508. Magnetrons. ENGLISH ELECTRIC VALVE CO. Ltd. March 11, 1966 [Aug. 9, 1965], No. 33991/65. Heading H1D. Each strap of a strapped magnetron includes a plurality of discrete surfaces, e.g. teeth, which co-operate to provide a plurality of inter-strap capacitances distributed along the strap lengths, a rotor having a plurality of discrete conductive parts being arranged such that, upon rotation, the parts in turn traverse the dielectric spaces of the capacitances, thereby permitting a high rate of cyclic frequency tuning. In one embodiment the straps (6, 8, Fig. 1, not shown), are connected to a pair of spaced discs (7, 9) lying in planes perpendicular to the magnetron axis, and having axially projecting teeth (10, 11), the rotor (12) lying between the two discs and having a corresponding set of teeth (13) projecting from each face. In another embodiment (Figs. 2, 3 and 4, not shown), the straps (17, 19) extend axially and have radially projecting teeth (10<SP>1</SP>, 11<SP>1</SP>), the end of a cylindrical rotor (112) having a circumferential array of axial slot apertures (13<SP>1</SP>) projecting between the two straps. The rotor may be rotated magnetically, and the opposite end of the anode block may be provided with a normal strap system.
GB33991/65A 1965-08-09 1965-08-09 Improvements in or relating to magnetrons Expired GB1078508A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB33991/65A GB1078508A (en) 1965-08-09 1965-08-09 Improvements in or relating to magnetrons
US566612A US3441796A (en) 1965-08-09 1966-07-20 Magnetrons having cyclically varying frequencies
CH1084966A CH447399A (en) 1965-08-09 1966-07-27 Magnetron with shunted cavities
FR72113A FR1498510A (en) 1965-08-09 1966-08-04 Twin connection magnetrons
DE19661541002 DE1541002A1 (en) 1965-08-09 1966-08-04 Magnetron with coupling lines
NL6611176A NL6611176A (en) 1965-08-09 1966-08-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33991/65A GB1078508A (en) 1965-08-09 1965-08-09 Improvements in or relating to magnetrons

Publications (1)

Publication Number Publication Date
GB1078508A true GB1078508A (en) 1967-08-09

Family

ID=10359989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33991/65A Expired GB1078508A (en) 1965-08-09 1965-08-09 Improvements in or relating to magnetrons

Country Status (6)

Country Link
US (1) US3441796A (en)
CH (1) CH447399A (en)
DE (1) DE1541002A1 (en)
FR (1) FR1498510A (en)
GB (1) GB1078508A (en)
NL (1) NL6611176A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192310A (en) * 1984-06-14 1988-01-06 Airtech Ltd Tunable RF cavity device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899715A (en) * 1972-06-22 1975-08-12 English Electric Valve Co Ltd Magnetron with rotatable tuning means
GB1485949A (en) * 1973-11-07 1977-09-14 Emi Varian Ltd Magnetrons
US3914644A (en) * 1974-04-18 1975-10-21 Varian Associates Rotary tuner for circular electric mode crossed field tube
US3904919A (en) * 1974-05-06 1975-09-09 Varian Associates Rotary tuner for a circular electric mode crossed field tube
SE399151B (en) * 1976-05-21 1978-01-30 Philips Svenska Ab VOTE MAGNETRON
GB1548038A (en) * 1976-09-16 1979-07-04 Emi Varian Ltd Spin tuned magnetrons
EP0018724B1 (en) * 1979-05-01 1981-10-07 Thorn Emi-Varian Limited Spin-tuned magnetron
US4555680A (en) * 1983-07-05 1985-11-26 M/A-Com, Inc. Magnetron tuned programmably using step motor
SE451356B (en) * 1983-08-05 1987-09-28 Philips Norden Ab DEVICE AT A TEMPORARY MAGNET

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542899A (en) * 1944-11-30 1951-02-20 Raytheon Mfg Co Cavity resonator electron discharge device
US2506955A (en) * 1945-05-14 1950-05-09 Bell Telephone Labor Inc Tunable high-frequency circuits
US2666165A (en) * 1946-01-03 1954-01-12 Hutchinson Franklin Tunable magnetron oscillator
FR1038195A (en) * 1951-06-07 1953-09-25 Csf Multi-Cavity Resonant Circuit Enhancements
NL138648C (en) * 1961-11-15
US3379925A (en) * 1962-12-24 1968-04-23 Raytheon Co Tunable magnetron having a capacitive transducer magnetically coupled to the tuning member
US3343031A (en) * 1963-12-21 1967-09-19 Philips Corp Tunable electronic tube
US3365609A (en) * 1964-09-01 1968-01-23 Philips Corp Transducer for use with variable frequency magnetrons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192310A (en) * 1984-06-14 1988-01-06 Airtech Ltd Tunable RF cavity device

Also Published As

Publication number Publication date
DE1541002A1 (en) 1969-07-24
US3441796A (en) 1969-04-29
NL6611176A (en) 1967-02-10
FR1498510A (en) 1967-10-20
CH447399A (en) 1967-11-30

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