GB644852A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB644852A
GB644852A GB32492/45A GB3249245A GB644852A GB 644852 A GB644852 A GB 644852A GB 32492/45 A GB32492/45 A GB 32492/45A GB 3249245 A GB3249245 A GB 3249245A GB 644852 A GB644852 A GB 644852A
Authority
GB
United Kingdom
Prior art keywords
anode
disc
slots
envelope
cavities
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
GB32492/45A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB644852A publication Critical patent/GB644852A/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

Landscapes

  • Microwave Tubes (AREA)

Abstract

644,852. Magnetrons. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 30, 1945, No. 32492. Convention date, Dec. 2, 1944. [Class 39 (i)] A magnetron with a resonant anode 2 of the multiple cavity type having a number of cylindrical openings 3 communicating by slots with a central opening 4 in which is located a cathode 10 is tuned by variably intercepting the magnetic component of the high-frequency field, by moving a ring- or disc-like member. The tuning device shown in Fig. 1 comprises two annular conducting rings 20, 21 on opposite sides of the anode and covering the cavities and the slots respectively so that the inductance and capacitance are simultaneously varied, preferably retaining their ratio constant. The rings are rigidly attached to a rod 22 and can be adjusted with respect to the anode by means of caps 26 on threaded sleeves 25 round bellows 23 secured in vacuum-tight relation to the envelope. The cathode 10 is shielded by disc 11 and supported from the envelope 1 by metal sleeves 12 and 13 insulated from sleeve 14 by cylinder 15. Alternate anode sections are joined together by straps lying in recesses 9 in the anode end faces in the region of the slots. In another form, the tuning device may comprise, as shown in Fig. 5, an annular disc with inwardly projecting tooth-like portions 34 lying in a transverse slot in the anode and adjustable by means of a right-angled arm 35, bellows 37 and screw 39 so that the portions of the cavities 3 covered by the members 34 can be varied by rotation of the disc. The container may be of copper.
GB32492/45A 1944-12-02 1945-11-30 Improvements in and relating to electric discharge devices Expired GB644852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US566288A US2424496A (en) 1944-12-02 1944-12-02 Tunable magnetron of the resonator type

Publications (1)

Publication Number Publication Date
GB644852A true GB644852A (en) 1950-10-18

Family

ID=24262266

Family Applications (2)

Application Number Title Priority Date Filing Date
GB32492/45A Expired GB644852A (en) 1944-12-02 1945-11-30 Improvements in and relating to electric discharge devices
GB3073/47A Expired GB631339A (en) 1944-12-02 1947-01-31 Improvements in magnetrons

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB3073/47A Expired GB631339A (en) 1944-12-02 1947-01-31 Improvements in magnetrons

Country Status (4)

Country Link
US (1) US2424496A (en)
BE (1) BE480796A (en)
FR (2) FR57878E (en)
GB (2) GB644852A (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB612415A (en) * 1944-03-29 1948-11-12 Marconi Wireless Telegraph Co Magnetron electron discharge devices
US2498763A (en) * 1944-06-15 1950-02-28 Westinghouse Electric Corp Magnetron
US2527699A (en) * 1944-10-10 1950-10-31 Dwain B Bowen Tunable oscillator
US2478534A (en) * 1944-12-13 1949-08-09 Raytheon Mfg Co Electron discharge device of the cavity resonator type
US2501196A (en) * 1945-03-20 1950-03-21 Raytheon Mfg Co Electron discharge device
US2477317A (en) * 1945-03-21 1949-07-26 Raytheon Mfg Co Electron discharge device
US2624862A (en) * 1945-05-09 1953-01-06 Everhart Edgar Tunable strapped magnetron
US2482541A (en) * 1945-05-12 1949-09-20 Gen Electric High-frequency electrical apparatus
US2506955A (en) * 1945-05-14 1950-05-09 Bell Telephone Labor Inc Tunable high-frequency circuits
US2481171A (en) * 1945-08-20 1949-09-06 Raytheon Mfg Co Electron discharge device
US2554272A (en) * 1945-10-31 1951-05-22 Westinghouse Electric Corp Split anode magnetron with tuning ring
US2666165A (en) * 1946-01-03 1954-01-12 Hutchinson Franklin Tunable magnetron oscillator
US2606307A (en) * 1946-01-29 1952-08-05 Marshall C Pease Tunable magnetron
US2624865A (en) * 1946-03-01 1953-01-06 Nathan P Nichols Plug-in magnetron and mount therefor
US2719240A (en) * 1946-03-14 1955-09-27 Laurence R Walker Cathode structure
US2644106A (en) * 1946-04-30 1953-06-30 Us Sec War Tuning and strapping mechanism for magnetrons
US2529950A (en) * 1946-05-10 1950-11-14 Raytheon Mfg Co Tunable electron discharge device
NL80745C (en) * 1946-05-13
FR963882A (en) * 1947-04-03 1950-07-24
US2509265A (en) * 1947-08-13 1950-05-30 Rca Corp Tunable cavity resonator magnetron
US2621311A (en) * 1947-12-26 1952-12-09 Raytheon Mfg Co Mechanical movement
US2644139A (en) * 1947-12-27 1953-06-30 Westinghouse Electric Corp Multifrequency tau-r box
US2720628A (en) * 1950-09-05 1955-10-11 Beverly D Kumpfer Tunable cavity resonator
FR1082808A (en) * 1950-12-28 1955-01-03 Int Standard Electric Corp Tuning device for magnetron
US2934675A (en) * 1955-11-10 1960-04-26 Carlton G Lehr Magnetron tuning
FR2212634B1 (en) * 1972-12-29 1976-10-29 Thomson Csf
GB9002593D0 (en) * 1990-02-06 1990-10-17 Eev Ltd Magnetrons

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2167201A (en) * 1935-06-28 1939-07-25 Pintsch Julius Kg Electron tube
US2115521A (en) * 1936-04-30 1938-04-26 Telefunken Gmbh Magnetron
US2252118A (en) * 1936-06-18 1941-08-12 Pintsch Julius Kg Electron tube
US2270777A (en) * 1939-04-06 1942-01-20 Telefunken Gmbh Ultra short wave electron discharge device system
US2408234A (en) * 1941-11-26 1946-09-24 Raytheon Mfg Co Tunable magnetron
US2408235A (en) * 1941-12-31 1946-09-24 Raytheon Mfg Co High efficiency magnetron
US2408237A (en) * 1942-03-06 1946-09-24 Raytheon Mfg Co Tunable magnetron
US2408238A (en) * 1943-06-07 1946-09-24 Raytheon Mfg Co Space discharge device

Also Published As

Publication number Publication date
FR955107A (en) 1950-01-10
US2424496A (en) 1947-07-22
BE480796A (en)
FR57878E (en) 1953-09-18
GB631339A (en) 1949-11-01

Similar Documents

Publication Publication Date Title
GB644852A (en) Improvements in and relating to electric discharge devices
US2281717A (en) Electron discharge apparatus
US2408237A (en) Tunable magnetron
GB585290A (en) Improvements in and relating to wave guide structures
US2391016A (en) High-frequency tube structure
US2468243A (en) Electron discharge device
GB613423A (en) Improvements in and relating to magnetrons
GB648826A (en) Improvements in magnetrons
US2483893A (en) Tunable unit for high-frequency circuit
US2409694A (en) Electron discharge device
GB1294746A (en) Parasitic mode suppressor
GB640255A (en) Improvements in magnetron electron-discharge devices
US2529950A (en) Tunable electron discharge device
GB653750A (en) Improvements in or relating to magnetrons
US2617038A (en) Ultrahigh-frequency device
GB626293A (en) Improvements in and relating to magnetrons
GB1412034A (en) Resonant devices
GB1175114A (en) Resonant Cavity
US2444418A (en) High-frequency electronic device
US2459030A (en) Tunable magnetron
GB644853A (en) High frequency electrical apparatus
US2551672A (en) High-frequency electrical resonator
GB650613A (en) Improvements in magnetrons employing cavity resonators
US2551614A (en) Tunable magnetron
US2501152A (en) Tunable magnetron