US2305844A - Electron discharge device - Google Patents

Electron discharge device Download PDF

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Publication number
US2305844A
US2305844A US388035A US38803541A US2305844A US 2305844 A US2305844 A US 2305844A US 388035 A US388035 A US 388035A US 38803541 A US38803541 A US 38803541A US 2305844 A US2305844 A US 2305844A
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US
United States
Prior art keywords
electrode
electrons
electron discharge
discharge device
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 - Lifetime
Application number
US388035A
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English (en)
Inventor
Trevor H Clark
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority claimed from GB1534541A external-priority patent/GB582485A/en
Application granted granted Critical
Publication of US2305844A publication Critical patent/US2305844A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J25/02—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
    • H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
    • H01J25/12—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with pencil-like electron stream in the axis of the resonators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/035—Shrink fitting with other step
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49865—Assembling or joining with prestressing of part by temperature differential [e.g., shrink fit]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body

Definitions

  • the invention relates to ultra high frequency discharge devices, and more particularly to electron discharge devices that employ velocity modulation of an electric beam.
  • the object of the present invention is to determine the conditions under which such an optimum performance can be effected.
  • the invention provides means for varying the transit time of the electrons in space without variation of the electromagnetic field, and in a manner that is independent of any concentration action on the beam or of any variation of the density of the beam, and accordingly of the intensity of the current it carries. This is done in a simple manner without any noteworthy complication in the structure of the device, and without introducing any change in the impedance of the oscillatory circuits.
  • a noteworthy variation of the transit time of the electrons in space without variation of the electromagnetic field may be controlled, without having to bring about any change either in the concentration of the beam or in its current density, by placing in this novariation space of the electromagnetic field an independently controlled electrode for retarding or accelerating the electron beam as a whole.
  • Fig. 1 shows a section taken along the longitudinal axis of an oscillatory circuit for an electron velocity modulation device which is associated to a means for controlling the beam according to characteristic features of the invention
  • Fig. 2 is a sectional view in elevation of a part of the oscillatory circuit of Fig. 1;
  • Fig. 3 shows a sectional view of the oscillation structure taken on line 33 of Fig. 1;
  • ig. 4 illustrates schematically in perspective a modification of the design of Figs. 1 and 3.
  • the drawing shows the devices used for generating and collecting the electron beam that traverses the oscillatory circuit only diagrammatically, because such devices may be of various well-known types and do not .per se form an essential part of the present invention.
  • the design of the oscillatory circuit selected as an example and shown in Figs. 1 to 3 comprises two resonant volumes A and B defined two terminal walls i of similar construction and symmetrically disposed. which fit into a cylinder and a center wall 3.
  • An axial conduit C is defined by cooperating tubular rims 65' of walls ll' and l of wall Within the portion of the conduit C that is defined by the tubular rim 7 there is installed a cylinder 4 which serves to modify the speed as a whole of the electrons of the beam in a manner explained further on.
  • FIG. 4 shows the conduit i as having a uniform straight section over its entire length, the tubular rims l and l and the electrode 4 having the same section and the tubular rim i being of greater size.
  • the tubular electrode 4 is preferably supported by elements uniformly distributed over its periphery in order to insure precise centering. Furthermore, in order to retain the electrical symetry of the design, the potential applied to this electrode s, which may be supplied by a single conductor, is preferably supplied by as many conductors as there are supports.
  • the potential applied to this electrode s which may be supplied by a single conductor, is preferably supplied by as many conductors as there are supports.
  • FIGs. 2 and 3 of the drawing One example of an embodiment is shown in Figs. 2 and 3 of the drawing, and in these each supply connection 5 is surrounded by an insulating tube 8 of suitable thickness for supporting the difference in potential between electrode 4 and the oscillatory circuit. In the case shown in the drawing there are three potential leads insulated in this way at 120 to each other.
  • the current or electronic density of the beam is wholly determined by the potential applied to the body of the oscillatory circuit.
  • the system in accordance with the present invention may be arranged to permit application of a difference of several hundreds of volts between electrode 4 and the body of the oscillatory circuit and consequently bring about considerable variation of the transit time of the electrons.
  • the impedance of the beam can in this way be adjusted to the impedance ofiered by circuit B and this is important for producing optima conditions of output. This can be effected without either changing the concentration of the beam or its current density, or else by modifying the current density without modifying the transit time in the no-variation space of the electromagnetic field.
  • the invention consequently provides means not only for the operation of the device at optimum efiiciency but also for determining the conditions of this optimum operation.
  • a velocity modulation type electron discharge tube comprising means for velocity modulating beam of electrons, means positioned in the path of said beam in advance of said first mentioned means for allowing said velocity modulated electrons to form into groups, means for extracting energy from said grouped electrons positioned in the path of said beam in advance of said second named means and means for controlling the transit time of the electron beam comprising a control electrode mounted within said second named means, and lead in means for applying a predetermined potential to said electrode.
  • a tube according to claim 1, wherein said controlling means comprises a hollow electrode, and conductor means insulated from the other portions of the tube and symmetrically spaced with respect to said electrode and connected thereto.

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  • Electron Sources, Ion Sources (AREA)
US388035A 1940-05-02 1941-04-11 Electron discharge device Expired - Lifetime US2305844A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR2546976X 1940-05-02
FR2305844X 1940-11-05
GB1534541A GB582485A (en) 1941-11-28 1941-11-28 Improvements in or relating to velocity modulated electron discharge devices

Publications (1)

Publication Number Publication Date
US2305844A true US2305844A (en) 1942-12-22

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Family Applications (2)

Application Number Title Priority Date Filing Date
US388035A Expired - Lifetime US2305844A (en) 1940-05-02 1941-04-11 Electron discharge device
US495668A Expired - Lifetime US2546976A (en) 1940-05-02 1943-07-21 Electron discharge device and method of assembly

Family Applications After (1)

Application Number Title Priority Date Filing Date
US495668A Expired - Lifetime US2546976A (en) 1940-05-02 1943-07-21 Electron discharge device and method of assembly

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US (2) US2305844A (lt)
BE (1) BE455024A (lt)
FR (2) FR55359E (lt)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449569A (en) * 1943-01-18 1948-09-21 Sperry Corp Electron beam apparatus
US2466064A (en) * 1943-06-28 1949-04-05 Sperry Corp Velocity modulation apparatus
US2486398A (en) * 1943-05-29 1949-11-01 Sperry Corp Velocity modulation device and method
US3178653A (en) * 1960-04-04 1965-04-13 Raytheon Co Cavity resonator with beamconcentric ring electrode

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733380A (en) * 1956-01-31 Demountable magnetron with metal-to-metal
US2840786A (en) * 1952-01-19 1958-06-24 Thompson Prod Inc Coaxial switch
US2751514A (en) * 1952-04-15 1956-06-19 Dunlee Corp Hooded anode X-ray tube
US2993143A (en) * 1955-12-30 1961-07-18 High Voltage Engineering Corp Waveguide structure for microwave linear electron accelerator
US3371398A (en) * 1965-08-03 1968-03-05 Fafnir Bearing Co Method of making plain spherical bearings
US3512031A (en) * 1968-03-08 1970-05-12 Westinghouse Electric Corp Triangular electrode support having two rigid and one flexible support surface in contact with cathode ray tube neck
IT1143751B (it) * 1977-08-01 1986-10-22 Sits Soc It Telecom Siemens Klystron oscillatore accordabile

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1211091A (en) * 1917-01-02 Gen Electric Cathode-ray device.
US1631672A (en) * 1919-03-04 1927-06-07 Gen Electric Vacuum discharge apparatus
US1600060A (en) * 1923-09-18 1926-09-14 Gen Electric Electron-discharge device
US1924368A (en) * 1924-03-13 1933-08-29 Frederick S Mccullough Vacuum tube
US1984992A (en) * 1931-04-15 1934-12-18 Bell Telephone Labor Inc Electron discharge device
US2167201A (en) * 1935-06-28 1939-07-25 Pintsch Julius Kg Electron tube
BE426509A (lt) * 1937-02-22
US2259690A (en) * 1939-04-20 1941-10-21 Univ Leland Stanford Junior High frequency radio apparatus
US2151816A (en) * 1937-10-27 1939-03-28 Rca Corp Mount for electron discharge devices
FR851943A (lt) * 1938-01-22 1940-01-18
US2190511A (en) * 1938-03-01 1940-02-13 Gen Electric Ultra short wave system
US2190515A (en) * 1938-07-15 1940-02-13 Gen Electric Ultra short wave device
US2287845A (en) * 1939-03-08 1942-06-30 Univ Leland Stanford Junior Thermionic vacuum tube and circuits
NL72884C (lt) * 1939-12-02
US2301490A (en) * 1940-06-25 1942-11-10 Bell Telephone Labor Inc Electronic discharge device
US2314794A (en) * 1940-06-25 1943-03-23 Rca Corp Microwave device
BE473836A (lt) * 1940-07-13
US2243537A (en) * 1940-07-31 1941-05-27 Westinghouse Electric & Mfg Co Resonator grid structure
US2341941A (en) * 1941-07-18 1944-02-15 Westinghouse Electric & Mfg Co Vacuum discharge device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449569A (en) * 1943-01-18 1948-09-21 Sperry Corp Electron beam apparatus
US2486398A (en) * 1943-05-29 1949-11-01 Sperry Corp Velocity modulation device and method
US2466064A (en) * 1943-06-28 1949-04-05 Sperry Corp Velocity modulation apparatus
US3178653A (en) * 1960-04-04 1965-04-13 Raytheon Co Cavity resonator with beamconcentric ring electrode

Also Published As

Publication number Publication date
FR55359E (fr) 1952-06-27
BE455024A (lt)
FR958882A (lt) 1950-03-21
US2546976A (en) 1951-04-03

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