GB543522A - Improvements in electron discharge devices - Google Patents

Improvements in electron discharge devices

Info

Publication number
GB543522A
GB543522A GB13697/40A GB1369740A GB543522A GB 543522 A GB543522 A GB 543522A GB 13697/40 A GB13697/40 A GB 13697/40A GB 1369740 A GB1369740 A GB 1369740A GB 543522 A GB543522 A GB 543522A
Authority
GB
United Kingdom
Prior art keywords
stream
shields
waves
resonant cavity
electron
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
GB13697/40A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB543522A publication Critical patent/GB543522A/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
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J25/06—Tubes having only one resonator, without reflection of the electron stream, and in which the modulation produced in the modulator zone is mainly velocity modulation, e.g. Lüdi-Klystron

Landscapes

  • Particle Accelerators (AREA)
  • Microwave Tubes (AREA)

Abstract

543,522. Electron oscillators. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 31, 1940, No. 13697. Convention date, Aug. 31, 1939. [Class 39 (i)] In a device employing a resonant cavity to produce standing waves which interact with an electron stream within the cavity, shields screen the stream from alternate half-waves. Fig. 1 shows an oscillator comprising a resonant cavity 3 through which an electron beam is projected from a cathode 5. Shields 15 screen the beam from alternate half-waves of the standing waves producing velocity modulation. The resulting oscillations are picked up by a loop 11 and fed back to a grid 7 controlling the stream. As the velocity of the stream decreases as it proceeds the lengths of the shields are correspondingly diminished. The application of the resonator to an amplifier and a demodulator is also described ; in the latter case the screens are of equal length. Fig. 4 shows a magnetron. The resonant cavity 31 is between the magnet poles N, S and the anode 35 surrounds the cathode 37 and is slotted so as to produce the screening action required.
GB13697/40A 1939-08-31 1940-08-31 Improvements in electron discharge devices Expired GB543522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US292798A US2284751A (en) 1939-08-31 1939-08-31 Resonant cavity device

Publications (1)

Publication Number Publication Date
GB543522A true GB543522A (en) 1942-03-02

Family

ID=23126244

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13697/40A Expired GB543522A (en) 1939-08-31 1940-08-31 Improvements in electron discharge devices

Country Status (3)

Country Link
US (1) US2284751A (en)
CH (1) CH239837A (en)
GB (1) GB543522A (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458223A (en) * 1939-07-03 1949-01-04 Albert G Thomas Electronic tube
US2465341A (en) * 1941-02-08 1949-03-29 Int Standard Electric Corp Electric wave transmission system
US2424965A (en) * 1942-03-20 1947-08-05 Standard Telephones Cables Ltd High-frequency amplifier and oscillator
US2440089A (en) * 1942-08-18 1948-04-20 Rca Corp Electron discharge device employing cavity resonators
FR959962A (en) * 1943-04-14 1950-04-07
US2415470A (en) * 1943-04-21 1947-02-11 Rca Corp Magnetron
US2464349A (en) * 1943-05-27 1949-03-15 Bell Telephone Labor Inc Electronic high-voltage generator discharge device
US2543082A (en) * 1943-06-22 1951-02-27 David L Webster Cavity resonator device for production of high-speed electrons
US2452317A (en) * 1943-12-14 1948-10-26 Rca Corp Electron discharge device employing cavity resonators
US2452077A (en) * 1944-01-19 1948-10-26 Raytheon Mfg Co Electric discharge device
US2450629A (en) * 1944-03-14 1948-10-05 Gen Electric Ultra high frequency magnetron generator
US2446260A (en) * 1944-07-31 1948-08-03 Farnsworth Res Corp Differentiating discharge tube
US2520383A (en) * 1944-10-18 1950-08-29 Invex Inc Ultra high frequency oscillator
US2523307A (en) * 1944-10-28 1950-09-26 Standard Telephones Cables Ltd Feedback coupling circuit
US2462510A (en) * 1945-09-17 1949-02-22 Rca Corp Electron discharge device and associated circuit
BE481272A (en) * 1945-12-17
US2659033A (en) * 1946-03-29 1953-11-10 Milton D Hare Tunable squirrel cage magnetron
FR946141A (en) * 1947-04-21 1949-05-24 Csf Amplifier and oscillator lamp with control by a traveling wave
US2545595A (en) * 1947-05-26 1951-03-20 Luis W Alvarez Linear accelerator
USRE24146E (en) * 1948-10-18 1956-05-01 robertsontshersby-harvie
US2758246A (en) * 1951-02-01 1956-08-07 Rca Corp Signal frequency dividers
US2800606A (en) * 1951-10-26 1957-07-23 Univ Leland Stanford Junior Space charge wave amplifiers
US2888596A (en) * 1952-08-08 1959-05-26 Raytheon Mfg Co Traveling wave tubes
US3012170A (en) * 1958-08-29 1961-12-05 Eitel Mccullough Inc Charged particle beam modulating means and method
US3179895A (en) * 1960-12-06 1965-04-20 Zenith Radio Corp Parametric amplifier tube
JPH0810637B2 (en) * 1990-08-04 1996-01-31 三菱電機株式会社 High frequency electron gun device

Also Published As

Publication number Publication date
US2284751A (en) 1942-06-02
CH239837A (en) 1945-11-15

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