US2617091A - Phase modulated inductive output tube oscillator system - Google Patents

Phase modulated inductive output tube oscillator system Download PDF

Info

Publication number
US2617091A
US2617091A US745706A US74570647A US2617091A US 2617091 A US2617091 A US 2617091A US 745706 A US745706 A US 745706A US 74570647 A US74570647 A US 74570647A US 2617091 A US2617091 A US 2617091A
Authority
US
United States
Prior art keywords
voltage
electrode
cathode
modulating
phase modulated
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
US745706A
Other languages
English (en)
Inventor
Bruyning Hugo Georg
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
Original Assignee
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 US2617091A publication Critical patent/US2617091A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01J25/04—Tubes having one or more resonators, without reflection of the electron stream, and in which the modulation produced in the modulator zone is mainly density modulation, e.g. Heaff tube
    • 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
    • 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
    • H01J25/16—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 perpendicular to the axis of the resonators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/30—Angle modulation by means of transit-time tube

Definitions

  • This invention relates 'toa device for produc ing phase modulated ultra-high frequency oscillations, which comprises an electric cfischarge tube in which an electron beam is produced, that is, a so-called inductive output tube or Haefi tube.
  • a device for producing phase-modulated ultra-high frequency oscillations comprising an electric discharge tube in which an electron beam is produced, the modulating voltage to a cylindrical electrode which is placed between the cathode and the first of the electrodes determining the beam voltage, this modulating electrode having a positive voltage with respect to the cathode which voltage is smaller than the beam voltage and preferably less than thereof.
  • the modulating electrode has a sufficient size in the direction of motion of the electrons, the modulating voltage need not exceed 15% to 20% of the voltage set up between the modulating electrode and the cathode.
  • the electrons in effect, travel at a low velocity in the modulating electrode, so that a small variation thereof has a comparatively great influence on the transit time of the electrons.
  • the reference numeral l represents the quartz wall of the discharge tube wl iich comprises at one end -a fiat cathode 2 and acontrol gri d 3- in front of thelaltterl At its other end the tube is provided with a hollow collectingelectrode 4 which, during operation, acquires a voltage of, say, 2000 volts with respect to the cathode.
  • the reference numerals 5 and 6 denote two annular electrodes which surround the discharge path and attain a voltage of 4000 volts with respect to the cathode during operation. Between the electrode 5 and the control grid is provided an elongated cylindrical electrode 1 in which a grid having wide meshes is provided at the end facing the cathode.
  • this electrode is given a voltage of 500 volts.
  • the tube is surrounded by a cavity resonator 8, the initial frequency of which corresponds with that of the oscillations to be produced.
  • a coupling loop 9 which is connected to the supply conductors for grid and cathode, is provided in an aperture of this resonator.
  • a movable short-circuiting bridge Ill which permits the grid circuit to be tuned.
  • the cavity resonator contains the coupling loop of the aerial II.
  • the modulating voltage is supplied to the electrode 1 and amounts to 50 to volts only.
  • For focusing the electron beam magnet coils producing a magnetic field in the direction of the axis of the tube are provided around the tube at both sides of the resonator 8. For the sake of clarity these coils are not represented.
  • a system for producing phase-modulated ultra-high frequency oscillations comprising an inductive-output electron beam discharge tube having successively arranged within an evacuated envelope a cathode, a grid, a tubular modulating electrode, a first accelerating electrode, a second accelerating electrode and a collecting electrode, a cavity resonator surrounding said envelope and provided with an excitation gap disposed intermediate said first and second accelerating electrodes, means to supply a first positive voltage relative to cathode to said-first and second accelerating electrodes, means to supply a second positive-voltage whose magnitude is less than the voltage for said accelerating electrodes to said modulating electrode, means to supply a third positive voltage relative to said cathode having a magnitude intermediate said first and second voltages to said collecting electrode and means to apply a signal voltage to said modulating electrode to effect phase-modulation.
  • a system for producing phase-modulated ultra-high frequency oscillations comprising an rounding said envelope and provided with an excitation gap disposed intermediate said first and second accelerating electrodes, means to supply a first positive voltage relative to cathode to said accelerating electrodes, means to supply a second positive voltage having a magnitude less than the first voltage to said modulating electrode, means to supply a third positive voltage having a magnitude intermediate said first and second voltages to said collecting electrode, and means to apply a signal voltage to said modulating electrode to efiect phase-modulation.
  • a system as set forth in claim 2, further including a feed-back loop disposed within said resonator and connected between said cathode and said grid.
  • an inductive output electron discharge tube including in successive coaxial arrangement within an evacuated envelope, a cathode, a grid electrode, a tubular modulating electrode whose end facing the cathode is enclosed by a grid member, a first annular accelerating electrode, a second annular accelerating electrode and a collecting electrode.

Landscapes

  • Particle Accelerators (AREA)
US745706A 1946-06-07 1947-05-03 Phase modulated inductive output tube oscillator system Expired - Lifetime US2617091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL257597X 1946-06-07

Publications (1)

Publication Number Publication Date
US2617091A true US2617091A (en) 1952-11-04

Family

ID=19781379

Family Applications (1)

Application Number Title Priority Date Filing Date
US745706A Expired - Lifetime US2617091A (en) 1946-06-07 1947-05-03 Phase modulated inductive output tube oscillator system

Country Status (6)

Country Link
US (1) US2617091A (enrdf_load_stackoverflow)
BE (1) BE473716A (enrdf_load_stackoverflow)
CH (1) CH257597A (enrdf_load_stackoverflow)
DE (1) DE809819C (enrdf_load_stackoverflow)
FR (1) FR947563A (enrdf_load_stackoverflow)
GB (1) GB649524A (enrdf_load_stackoverflow)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2253080A (en) * 1940-03-21 1941-08-19 Rca Corp Resonant chamber circuit for use especially with inductive output tubes
US2368328A (en) * 1940-03-30 1945-01-30 Rca Corp High frequency generator
US2434704A (en) * 1944-03-20 1948-01-20 Rca Corp Electric space discharge circuits
US2435601A (en) * 1942-12-31 1948-02-10 Gen Electric Phase modulation system
US2440089A (en) * 1942-08-18 1948-04-20 Rca Corp Electron discharge device employing cavity resonators
US2456466A (en) * 1944-09-20 1948-12-14 Phiilco Corp Variable time delay electronic apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2253080A (en) * 1940-03-21 1941-08-19 Rca Corp Resonant chamber circuit for use especially with inductive output tubes
US2368328A (en) * 1940-03-30 1945-01-30 Rca Corp High frequency generator
US2440089A (en) * 1942-08-18 1948-04-20 Rca Corp Electron discharge device employing cavity resonators
US2435601A (en) * 1942-12-31 1948-02-10 Gen Electric Phase modulation system
US2434704A (en) * 1944-03-20 1948-01-20 Rca Corp Electric space discharge circuits
US2456466A (en) * 1944-09-20 1948-12-14 Phiilco Corp Variable time delay electronic apparatus

Also Published As

Publication number Publication date
GB649524A (en) 1951-01-31
FR947563A (fr) 1949-07-06
BE473716A (enrdf_load_stackoverflow)
DE809819C (de) 1951-08-02
CH257597A (de) 1948-10-15

Similar Documents

Publication Publication Date Title
US2312919A (en) Modulation system for velocity modulation tubes
US2200962A (en) Ultra short wave device
US2195455A (en) Electronic system
US2442662A (en) High-frequency translating apparatus
US2425657A (en) Short-wave apparatus
US2308523A (en) Electron discharge device
US2362209A (en) Ultra-high-frequency receiver
US2436397A (en) Ultra high frequency oscillator
US2565357A (en) Electron discharge device
US2096460A (en) Space discharge apparatus
US2434704A (en) Electric space discharge circuits
US2456466A (en) Variable time delay electronic apparatus
US2617091A (en) Phase modulated inductive output tube oscillator system
US2276320A (en) Centimeter wave device
US2482766A (en) High-frequency modulating system
US2466704A (en) Frequency multiplier apparatus
US2195456A (en) Electron device
US2122495A (en) Magnetron oscillator
US2265145A (en) Frequency modulator
US2060770A (en) Ultra high frequency oscillation circuit
GB729930A (en) Improvements in or relating to electron discharge devices
US2229700A (en) Selective space discharge device
US2583023A (en) Automatic frequency control for klystron oscillators
US2142192A (en) Modulation system for magnetron oscillators
US2586816A (en) High-frequency modulating system