US2600491A - Electron discharge tube apparatus - Google Patents

Electron discharge tube apparatus Download PDF

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Publication number
US2600491A
US2600491A US107288A US10728849A US2600491A US 2600491 A US2600491 A US 2600491A US 107288 A US107288 A US 107288A US 10728849 A US10728849 A US 10728849A US 2600491 A US2600491 A US 2600491A
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US
United States
Prior art keywords
control grid
collecting means
discharge tube
electron
cathode
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
US107288A
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English (en)
Inventor
Diemer Gesinus
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.)
Hartford National Bank and Trust Co
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Hartford National Bank and Trust Co
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 Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
Application granted granted Critical
Publication of US2600491A publication Critical patent/US2600491A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field
    • H01J25/38—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field the forward travelling wave being utilised
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/78—One or more circuit elements structurally associated with the tube
    • H01J19/80—Structurally associated resonator having distributed inductance and capacitance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field

Definitions

  • This invention relates to circuit arrangements for producing, amplifying or modulating electrical waves of a length of the order of some decimetres or less, comprising an electric discharge tube in which the electron beam is deflected by interaction with a travelling wave.
  • the invention furthermore relates to a tube for use in such a circuit arrangement.
  • a pencil-shaped electron beam is deflected by interaction with two or more spiral-shaped conductors, between which the electron beam moves, or an electron beam moving along the surface of a circular cylinder is deflected between a spiral-shaped conductor and a conductive cylinder.
  • Such electron beams can only carry a small current if no additional steps are taken to avoid stray of the beam.
  • the electron beam in a device for producing, amplifying or modulating waves of a length of the order of some few decimetres or less, in which an electron beam is deflected by interaction with a travelling wave, the electron beam is a flat, disc-shaped beam which emanates from a cylindrical cathode which, if desired, is surrounded by one or more grids, whilst the deflection electrodes along which the travelling wave moves are constituted by two flat spirals surrounding the first-mentioned electrode system or by a single flat spiral provided opposite a flat conductive plate.
  • electrode is preferably shaped in this form, the
  • Fig. 1 is a sectional view of the tube at right angles to the axis of the electrode system takenv along the line l-l of Fig. 2 and Fig. 2 is a vertical sectional view, partially in 2 elevation, through the axis of the tube taken along the line Hl I of Fig. 1.
  • reference numeral I designates the glass envelope of the tube, in the axis of which a cylindrical incandescent cathode 2 of 5 mms. diameter is provided.
  • the incandescent cathode 2 is surrounded by a control-grid 3 and a screen-grid 4, each of which is constituted by eight rods joined at the upper and lower ends by means of rings.
  • the deflection electrodes consist of two strips 5 wound to form a logarithmic spiral and secured in two mica plates 1 with the use of short supporting rods.
  • the anode system is made of two narrow strips 6, behind which a screen electrode 8 is provided. The two strips 5 and the strips 6 are separately brought out through the tube envelope I.
  • An electron discharge tube of the traveling wave type comprising a cylindrical cathode source of electrons, a control grid located in the path of the electrons and surrounding said cathode, electron collecting means surrounding said cathode source'and control grid and spaced from said control grid, and a deflecting electrode system interposed between said control grid and said collecting means, said deflecting system comprising a planar traveling wave electrode interposed between said control grid and said collecting means and having a spiral section transverse to the axis of the cathode source and a second planar electrode interposed between said control grid and said collecting means and arranged substantially parallel to said first planar electrode and spaced therefrom.
  • An electron discharge tube of the traveling wave type comprising a cylindrical cathode source of electrons, a control grid located in the path of the electrons and surrounding said cathode, electron collecting means surrounding said cathode source and control grid and spaced from said control grid, and a deflecting electrode system interposed between said control grid and said collecting means, said deflecting system comprising a planar traveling Wave electrode interposed between said control grid and said collecting means and having a logarithmic spiral section transverse to the axis of the cathode source and a second planar electrode interposed source of electrons, a control grid located in the path of the electrons and surrounding said cathode, electron collecting means surrounding said cathode source and control grid and spaced from said control grid, and a deflecting electrode system interposed between said control grid and said collecting means, said deflecting system 4.
  • An electron discharge tubeof the traveling wave type comprising a cylindrical cathode source of electrons, a control grid located. inithet path of the electrons and surrounding said cathode, electron-collecting means surrounding said cathode source and controlrgrid and spaced -from said control grid, and a deflecting-electrode system interposedbetween said control gridand said collecting means, said deflecting system comprising a first planar traveling waveelectrode interposed between said control grid and said collecting means and a second planar traveling wave electrode interposed between said control grid and said collecting means and arranged substantially parallel to said first planar electrode and spaced therefrom, said first traveling wave electrode having a spiral section'transverse to the axis of the cathode source, said spiral section having an initial pitch smaller than the initial radius thereof.

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Microwave Tubes (AREA)
  • Particle Accelerators (AREA)
US107288A 1948-09-09 1949-07-28 Electron discharge tube apparatus Expired - Lifetime US2600491A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL277174X 1948-09-09

Publications (1)

Publication Number Publication Date
US2600491A true US2600491A (en) 1952-06-17

Family

ID=19782165

Family Applications (1)

Application Number Title Priority Date Filing Date
US107288A Expired - Lifetime US2600491A (en) 1948-09-09 1949-07-28 Electron discharge tube apparatus

Country Status (7)

Country Link
US (1) US2600491A (nl)
BE (1) BE491017A (nl)
CH (1) CH277174A (nl)
DE (1) DE812807C (nl)
FR (1) FR994737A (nl)
GB (1) GB670124A (nl)
NL (2) NL142248B (nl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005198B (de) * 1954-12-11 1957-03-28 Telefunken Gmbh Elektrische Entladungsroehre nach dem Lauffeldprinzip

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1210540A (en) * 1915-10-28 1917-01-02 Drahtlose Telegraphie Gmbh Cathode-ray tube.
DE550314C (de) * 1932-05-07 Sueddeutsche Telefon App Kabel Kathodenroehre, bei welcher Gitter oder Anode oder beide derart in der Elektronenbahn angeordnet sind, dass, von der Kathode aus gesehen, Teile des Gitters und der Anode miteinander abwechseln
US2002238A (en) * 1930-07-22 1935-05-21 Jr Edward H Yonkers Negative resistance
US2164922A (en) * 1935-12-03 1939-07-04 Telefunken Gmbh Cross field control tube
US2176589A (en) * 1936-01-16 1939-10-17 Telefunken Gmbh Electron beam tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE550314C (de) * 1932-05-07 Sueddeutsche Telefon App Kabel Kathodenroehre, bei welcher Gitter oder Anode oder beide derart in der Elektronenbahn angeordnet sind, dass, von der Kathode aus gesehen, Teile des Gitters und der Anode miteinander abwechseln
US1210540A (en) * 1915-10-28 1917-01-02 Drahtlose Telegraphie Gmbh Cathode-ray tube.
US2002238A (en) * 1930-07-22 1935-05-21 Jr Edward H Yonkers Negative resistance
US2164922A (en) * 1935-12-03 1939-07-04 Telefunken Gmbh Cross field control tube
US2176589A (en) * 1936-01-16 1939-10-17 Telefunken Gmbh Electron beam tube

Also Published As

Publication number Publication date
DE812807C (de) 1951-09-06
NL142248B (nl)
FR994737A (fr) 1951-11-21
BE491017A (nl)
CH277174A (de) 1951-08-15
NL73505C (nl)
GB670124A (en) 1952-04-16

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