US2545073A - Device for amplifying or generating electric oscillations of very high frequency - Google Patents

Device for amplifying or generating electric oscillations of very high frequency Download PDF

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Publication number
US2545073A
US2545073A US728044A US72804447A US2545073A US 2545073 A US2545073 A US 2545073A US 728044 A US728044 A US 728044A US 72804447 A US72804447 A US 72804447A US 2545073 A US2545073 A US 2545073A
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United States
Prior art keywords
high frequency
amplifying
wall
tube
generating electric
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Expired - Lifetime
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US728044A
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English (en)
Inventor
Vries Gerrit De
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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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
    • 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

Definitions

  • This invention relates to a device for generating or amplifying electric oscillations of very high frequency; this device comprises an electric dismade at least in part of insulating material, the flow of electrons passing through the tubewith variable intensity and inducing high-frequency currents in a circuit arranged outside the tube and comprising a slit.
  • This device comprises an electric dismade at least in part of insulating material, the flow of electrons passing through the tubewith variable intensity and inducing high-frequency currents in a circuit arranged outside the tube and comprising a slit.
  • 'The'term',circuit suggests either two conduc- "t'or's" separated fromeach other by a slit and connected by an impedance or a cavity resonator which in a simple form is constituted by a solid of revolution formed by a single circular conductor, a slit being left between the ends of the conductor.
  • a device for amplifying or generating electric oscillations of very high frequency said device being provided with an electric discharge tube having a Wall made at least in part of insulating material, on the outside of which is arranged a circuit having a slit and an insulating part of the wall of the tube opposite to the adjacent conducting parts of this circuit, being 10- cally provided with conductive coatings each of which is conductively connected to a part of the said circuit.
  • the term local coating is to be understood to mean a layer which is so mounted on the tube wall that this layer and the tube wall are no longer separated by an air layer, the said coating being only, applied to those parts of the tube wall which face the said conductors of the circuit.
  • the conductive coating may be made of differin materials and applied in various ways,
  • the tube may be coated with small plates of metals, such as nickel, copper or the like; alternatively, the coatings may be arranged in the shap of rings to surround the tube.
  • the application of the coatings may be effected in a simple manner by applying a metal compound to the wall, dissociating it by heat and burning-in the meta] precipitate thus formed.
  • a metal which.
  • platinum is especially suitable to be applied in thismanner-is platinum, it being possible to start with a readily dissociated platinum compound, for example platinum chloride dissolved in nitrocellulose or platinum resinates which are applied in the form of any suspension and dissociated by heat, the platinum precipitate being then burnt-in.
  • a readily dissociated platinum compound for example platinum chloride dissolved in nitrocellulose or platinum resinates which are applied in the form of any suspension and dissociated by heat, the platinum precipitate being then burnt-in.
  • the invention may be used with devices for generating or amplifying electric oscillations of very high frequency, a circuit which, as already set out hereinbefore, may have widely difiering shapes, but which at any rate must have a slit in the proximity of the tube wall, bein arranged on the outside of the tube.
  • a very simple form of construction is that in which the tube is surrounded by a so-called cavity resonator, that is to say a solid of revolution which is formed by a single circular conductor which comprises a slit; on either side of the slit the conductor may have a flange which is just opposite the tube wall, these flanges being connected, according to the invention, to conductive coatings of the tube wall.
  • connection of the conductive Wall coatings to the parts of the circuit is established by means of flexible elements which may be formed, for example, by arcuate or corrugated rings, a plurality of bent strips or the like.
  • I designates a part of the wall of an electric discharge tube, said part being made of insulating material.
  • the wall I is surrounded by two conducting parts 2 separated by a slit 3 and united to form a circular conductor 4 which constitutes a cavity resonator.
  • a heater [0 for a cathode source of electron emission H, is provided at one extremity of the tube wall I, and the electron beam is formed by the focusing electrode l2 and the accelerating electrode l3 and passes along the insulating wall portion of th tube to the collector plate It.
  • Adevice for generating 501 amplifying high frequency oscillations comprising an electric -discharge tube having an envelope, a cathode source of an electron beam within said envelope,

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  • Microwave Tubes (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
US728044A 1944-06-14 1947-02-12 Device for amplifying or generating electric oscillations of very high frequency Expired - Lifetime US2545073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2545073X 1944-06-14

Publications (1)

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US2545073A true US2545073A (en) 1951-03-13

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ID=19874671

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US728044A Expired - Lifetime US2545073A (en) 1944-06-14 1947-02-12 Device for amplifying or generating electric oscillations of very high frequency

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US (1) US2545073A (xx)
BE (1) BE464963A (xx)
DE (1) DE819298C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730650A (en) * 1951-03-29 1956-01-10 Hartford Nat Bank & Trust Co Very high frequency electron discharge tubes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240229A (en) * 1939-01-25 1941-04-29 Bbc Brown Boveri & Cie High frequency oscillator
US2253080A (en) * 1940-03-21 1941-08-19 Rca Corp Resonant chamber circuit for use especially with inductive output tubes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240229A (en) * 1939-01-25 1941-04-29 Bbc Brown Boveri & Cie High frequency oscillator
US2253080A (en) * 1940-03-21 1941-08-19 Rca Corp Resonant chamber circuit for use especially with inductive output tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730650A (en) * 1951-03-29 1956-01-10 Hartford Nat Bank & Trust Co Very high frequency electron discharge tubes

Also Published As

Publication number Publication date
BE464963A (xx)
DE819298C (de) 1951-10-31

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