US2668257A - Electric discharge tube of the cavity resonator type - Google Patents

Electric discharge tube of the cavity resonator type Download PDF

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Publication number
US2668257A
US2668257A US181139A US18113950A US2668257A US 2668257 A US2668257 A US 2668257A US 181139 A US181139 A US 181139A US 18113950 A US18113950 A US 18113950A US 2668257 A US2668257 A US 2668257A
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United States
Prior art keywords
cavity resonator
cathode
discharge tube
electric discharge
electron beam
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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
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US181139A
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English (en)
Inventor
Coeterier Frederik
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
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Filing date
Publication date
Application filed by Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators
    • 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
    • H01J25/22—Reflex klystrons, i.e. tubes having one or more resonators, with a single reflection of the electron stream, and in which the stream is modulated mainly by velocity in the modulator zone
    • H01J25/26—Reflex klystrons, i.e. tubes having one or more resonators, with a single reflection of the electron stream, and in which the stream is modulated mainly by velocity in the modulator zone in which the electron stream is coaxial with the axis of the resonator or resonators and is tube-like before reflection
    • 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
    • H01J25/32—Tubes with plural reflection, e.g. Coeterier tube
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—Cavity resonators

Definitions

  • Th'e'present invention relates to an electric discharge tube of "the type comprising'a'resonant cavity'which is excited around acircular'path-by an electron beam'producedby an annular cath- I 'ode.
  • an electric discharge tube comprising a resonant cavity which is excited along a circular path by an electron beam produced by an annular cathode the energy produced is conducted away with the use of a system of concentric conductors which, internally of the resonant cavity, merge into two parallel plates provided with apertures to allow the passage of the electron beam.
  • FIG. 1 is an elevational sectional view of the electrode system of a tube according to the invention.
  • Fig. 2 is a plan view in section taken on line 11-11 of Fig. 1.
  • FIG. 1 an evacuated discharge tube having an enclosing envelope l.
  • a system of reflecting electrodes 2 and 3 At the lower end of the envelope is an annular cathode 4.
  • plates l0 and II have v is a concentric conductor trodes*5- and '6. interposed between -the-'-beam I reflecting electrodes-2 and' 3, isa resonant'cavity, '1, in the *form of The- "upper-and lower walls of cavity l are each "provided with apertures 8 and -8 respectively, in the shape of segments tr a circle. The various segments 8 or8' are shuntstraps 9; The resonant thereof, "The circularly shaped apertures l2 and I3 respectively. Theseapertures I2 and-l3 ofthe coupling plates are shunted'by strips I4.
  • the electrode system 1, l0, II gets a potential of some hundreds of volts positive with respect to the cathode.
  • Reflecting electrode 3 gets about cathode potential and reflecting electrode 2 a negative potential.
  • cathode 4 and electrode 2 a more or less parabolic field is set up in which the electrons oscillate with constant frequency. Electrons that have lost their energy are deflected to the electrodes and caught by them. The sealing of the tube is explained more fully in Philips Technical Review 8, 257-266, 1946.
  • An electric discharge tube comprising an annular cathode for the generation of an electron beam, an electrode in said tube and spaced from said cathode, a cavity resonator interposed between said cathode and said electrode, said cavity resonator having apertures therein for the pas sage of said electron beam, two substantially parallel coupling plates in said cavity resonator arranged with their planes transverse to the path of the said electron beam and each having apertures therein for the passage of said electron beam, and a concentric conductor output system extending out of said cavity resonator, and through said annular cathode at substantially right angles to said parallel plates said concentric conductor system having an inner conductor merged with one of said parallel lates and an outer conductor merged with the other of said parallel plates.
  • An electric discharge tube comprising an annular cathode for the generation of an electron beam, an electrode in said tube and spaced.
  • a cylindrical oscillatory system interposed between said cathode and said electrode and including a cavity resonator and two substantially parallel coupling plates in said cavity resonator arranged with their planes trans,
  • said oscillatory system having apertures therethrough for the passage of said electron beam, and a concentric conductor system extending out of said 4 cavity resonator and through the center of said annular cathode at substantially right angles to said parallel plates, said system having an inner conductor merged with one of said parallel plates and an outer conductor merged with the other of said parallel plates.
  • An electric discharge tube comprising an annular cathode, for the generation of an electron beam, a reflecting electrode in said tube and spaced from said cathode, a substantially flat cylindrical cavity resonator interposed between said cathode and said reflecting electrode and aligned therewith, said cavity resonator having apertures therein for the passage of said electron beam, two substantially parallel plates in said cavity resonator arranged with their planes transverse to the path of the said electron beam and each having apertures therein for the pas- ,sage of said electron beam, and a concentric conductor output system extending out or said cavity resonator through the center of said annular cathode at substantially right angles to said parallel plates, said system having an inner conductor merged to the parallel plate remote from said cathode and an outer conductor merged with the parallel plate adjacent said cathode.

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US181139A 1949-09-09 1950-08-24 Electric discharge tube of the cavity resonator type Expired - Lifetime US2668257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL668806X 1949-09-09

Publications (1)

Publication Number Publication Date
US2668257A true US2668257A (en) 1954-02-02

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ID=19798843

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US181139A Expired - Lifetime US2668257A (en) 1949-09-09 1950-08-24 Electric discharge tube of the cavity resonator type

Country Status (6)

Country Link
US (1) US2668257A (es)
BE (1) BE497970A (es)
DE (1) DE832782C (es)
FR (1) FR1024375A (es)
GB (1) GB668806A (es)
NL (1) NL77392C (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3126119A1 (de) * 1981-07-02 1983-01-20 Philips Patentverwaltung Gmbh, 2000 Hamburg Mikrowellen-verstaerkerroehre mit zwei ringresonatoren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2411538A (en) * 1940-06-21 1946-11-26 Int Standard Electric Corp Electron discharge apparatus
US2414517A (en) * 1940-08-02 1947-01-21 Standard Telephones Cables Ltd Electron discharge apparatus incorporating high frequency resonators
US2458000A (en) * 1943-11-06 1949-01-04 Bell Telephone Labor Inc Feedback amplifier or oscillator
US2466063A (en) * 1943-02-03 1949-04-05 Sperry Corp High-power high-frequency electron discharge apparatus
US2527600A (en) * 1946-05-04 1950-10-31 Int Standard Electric Corp Resonator for velocity modulation tubes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2411538A (en) * 1940-06-21 1946-11-26 Int Standard Electric Corp Electron discharge apparatus
US2414517A (en) * 1940-08-02 1947-01-21 Standard Telephones Cables Ltd Electron discharge apparatus incorporating high frequency resonators
US2466063A (en) * 1943-02-03 1949-04-05 Sperry Corp High-power high-frequency electron discharge apparatus
US2458000A (en) * 1943-11-06 1949-01-04 Bell Telephone Labor Inc Feedback amplifier or oscillator
US2527600A (en) * 1946-05-04 1950-10-31 Int Standard Electric Corp Resonator for velocity modulation tubes

Also Published As

Publication number Publication date
FR1024375A (fr) 1953-04-01
GB668806A (en) 1952-03-19
BE497970A (es)
DE832782C (de) 1952-02-28
NL77392C (es)

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