US2108900A - Ultrashort wave oscillation generator circuit - Google Patents

Ultrashort wave oscillation generator circuit Download PDF

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Publication number
US2108900A
US2108900A US751984A US75198434A US2108900A US 2108900 A US2108900 A US 2108900A US 751984 A US751984 A US 751984A US 75198434 A US75198434 A US 75198434A US 2108900 A US2108900 A US 2108900A
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US
United States
Prior art keywords
grid
transmission line
length
circuit
conductor
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
US751984A
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English (en)
Inventor
Peterson Harold Olaf
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.)
RCA Corp
Original Assignee
RCA 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
Priority to NL92204D priority Critical patent/NL92204C/xx
Application filed by RCA Corp filed Critical RCA Corp
Priority to US751984A priority patent/US2108900A/en
Priority to DER94672D priority patent/DE669324C/de
Application granted granted Critical
Publication of US2108900A publication Critical patent/US2108900A/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
    • H01J25/68—Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators
    • H01J25/70—Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators with resonator having distributed inductance with capacitance, e.g. Pintsch tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2812/00—Indexing codes relating to the kind or type of conveyors
    • B65G2812/02—Belt or chain conveyors
    • B65G2812/02267—Conveyors having endless traction elements
    • B65G2812/02861—Conveyors having endless traction elements moving the materials over supporting surfaces by impeller means, e.g. scrapers
    • B65G2812/02871—Conveyors having endless traction elements moving the materials over supporting surfaces by impeller means, e.g. scrapers for bulk material
    • B65G2812/02881—Scraper conveyors
    • B65G2812/0295—Scraper chains
    • B65G2812/0296—Attachments of scrapers to traction elements
    • B65G2812/0298—Attachments of scrapers to traction elements to more than one chain

Definitions

  • This invention relates to a method of and apparatus for generating ultrashort wave oscillations, and in particular to a circuit arrangement wherein the principal elements of an oscillation generator tube constitute the conductors of a concentric transmission line.
  • One of the objects of the present invention is to provide an improved form of tube, so constructed that the elements themselves form a uniform transmission line, and this is achieved, in the preferred form of the present invention, by the provision of cylindrical elements constructed as concentric transmission lines on which standing waves are developed.
  • Figs. 1-4, inclusive show different embcdiments of the invention
  • Fig. 1a shows a cross sectional view of the tube of Fig. 1.
  • a complete transmitting circuit arrangement employing a tube whose elements are constructed to form a transmission line one-quarter of a wave length long.
  • the elements of which are shown located within an evacuated envelope H), which may be of glass or other suitable material, there is shown a concentric transmission line which is one-quarter of a wave length long comprising an outer anode 4 and an inner grid 3, the latter of which is a perforated continuation of the inside conductor of the concentric transmission line.
  • the outer conductor or anode 4 is connected at one end of the line through a capacity to the cathode 2, which is supplied with.
  • the tube it is preferred to operate the tube as a Barkhausen type oscillator, wherein the grid is main tained at a high positive potential with respect to the cathode and the anode at a much lower potential, whereby pendulum motion of electrons emitted by the cathode is obtained about the grid.
  • a constant magnetic field such as is provided by coil 8 and unidirectional source of potential l4, may be employed to reduce the flow of electrons along the length of the conductor.
  • unidirectional source of potential l2 supplies the grid with a high positive potential and source is supplies the anode with a much lower positive potential, although it will be understood that the anode may be at zero or negative potential with respect to the cathode.
  • a modulation microphone 'l which impresses modulating currents upon an amplifier 6, in turn connected through a transformer 24 with the anode and cathode of the tube.
  • Any suitable utilization circuit, such as an antenna 9, may comprise the output of the circuit and be connected to the inner'conductor of the concentric line, as shown.
  • Fig. 1a is a cross sectional view of the tube along the lines A, A.
  • Fig. 2 shows another embodiment of the invention, wherein the outside conductor of the concentric transmission line is made tobe the cathode, electron emission in this case being obtained at desired points, herein designated 2, 2, spaced onehalf wave length apart, by coating the inside of the outside conductor with suitable electron emitting material and supplying concentrated heat at the desired points through transformers l, I.
  • the inside conductor 3 is the grid, which is maintained positive with respect to the cathode and is shown constructed in the form of a perforated cylinder. In this embodiment electrons.
  • nodal points of this transmission line is herein obtained by means of constant magnetic field coils 8.
  • the potential curve is shown by the 'dotand-dash lines.
  • the outputcircuits herein comprise dipole antennae l5, l5 connected with transmission lines l6, IE to the potential nodal points on the grids 3.
  • a reflector ll serves to concentrate the radiation from the dipoles in any desired direction.
  • the magnetic fields are so polarized as to concentrate the flow of electrons to restricted sections of the length of the tube. Every other antenna feeder is reversed and so-connected that the antennae l5, l5 radiate cumulatively in the direction perpendicular to the axis of the reflector I1.
  • Fig. 3 shows still a third embodiment wherein the outer conductor has its inside coated with suitable electron emitting material at a desired point which is chosen to give proper loading of the one -quarter wave length resonator, as shown in the drawings.
  • the concentric transmission line has an overall length of one-quarter wave length, and the distances at and b are so chosen as to give the proper loading. 1 V
  • Fig. 4 shows a still further modification utilizing a magnet yoke IT.
  • the inside conductor of the concentric transmission line in this instance may comprise some magnetic material, such as nickel, in which casea highly concentrated magnetic field may be produced perpendicular to the axis of the concentric transmission line.
  • the electron emitting material is herein shown at the top on the inside of the outer elements, the output being shown obtained from a tap at the bottom of the tube over lead 3.
  • the magnetic field is so arranged as to concentrate the flow of electrons to a restricted section of the length of the tube.
  • An ultrashort wave oscillation generator circuit comprising a multi-electrode electron discharge device having within its envelope an oscillatory circuit in the form of a concentric transmission line having inner and outer conductors of a length equal to a multiple of onequarter of the length of the operating wave, said conductors comprising electrodes of said devices, said inner conductor comprising a perforated grid over at least a portion of its length, said outer conductor having that part of its inside portion opposite the perforated grid coated with an electron einissive material, a source of energy for heating said electron emissive material for liberating electrons, means for applying suitable polarizing potentials to the electrodes of said device, and a utilization circuit coupled. to said inner conductor.
  • An ultrashort wave oscillation generator circuit comprising a multi-electrode electron discharge device having within its envelope an oscillatory circuit in the form of a concentric transmission line having inner and outer conductors of a length substantially a multiple of one-quarter of the lengthof the operating wave, said conductors comprising electrodes of said devices, said inner conductor comprising a perforated grid over at least a portion of the length of said conductor, said outer conductor having its inside coated with an electron emitting material at predetermined points throughout its length, said points being opposite perforations on said grid whereby the emission of electrons from said material enables said electrons to pass through the perforations in said grid, means for heating said electron emissive material and for applying suitable polarizing potentials to said electrodes, and means for obtaining oscillations from said device comprising a utilization circuit connected to a voltage nodal point on said grid.
  • An ultrashort wave length oscillation generator circuit comprising a multi-electrode electron discharge device having within its envelope an oscillatory circuit in the form of a concentric transmission line having inner and outer conductors, said inner conductor comprising a perforated grid and said outer conductor comprising an anode, a source of electrons located within said grid, said anode: being capacitively coupled to said grid at one end of said line and capacitively coupled to said source at the other end of said line, means for maintaining said grid at a high positive potential relative to said source and anode, and means for producing a magnetic field within the length of said concentric transmission line.
  • a circuit in accordance with claim 4, includof a length substantially one-quarter of the.
  • said outer conductor comprising a cathode
  • An ultrashort wave oscillation generator circuit comprising a multi-electrode electron discharge device having within its envelope an oscillatory circuitformed of a concentric transmission line having inner and outer conductors capacitively coupled together at one of their ends, said inner conductor comprising a perforated grid and said outer conductor comprising a cathode arranged to emit electrons at the end opposite said one end of said line, means for applying a high positive potential to said grid relative to said cathode, and means for producing a uniform magnetic field in the length of said transmission line.
  • said means for producing said field comprise a coil surrounding said envelope for producing a constant magnetic field, and a magnet yoke having poles on opposite sides of said envelope, said inner conductor of said transmission line being made of a magnetic material.
  • An oscillation generator circuit comprising an electron discharge device having a pair of electrodes in the form of inner and outer concentric conductors having substantially uniformly distributed inductance and capacitance, said outer conductor being substantially an integral multiple including unity of one-quarter of the length of the operating wave and being an emitter of electrons in the form of a cylinder, means for maintaining said inner conductor at a positive potential relative to said outer conductor whereby said inner conductor is a collector of electrons, means for producing a constant magnetic field Within the lengths of said concentric conductors, and a utilization circuit directly connected to said inner conductor at a potential nodal point thereon.
  • An ultrashort wave oscillation generator circuit comprising a multi-electrode electron discharge device having within its envelope an oscillatory circuit in the form of a con centric transmission line having inner and outer conductors substantially one-quarter of the length of the operating wave, said conductors comprising electrodes of said device, said inner conductor comprising a perforated grid over at least a portion of its length, means for applying suitable polarizing potentials to said electrodes, said outer conductor comprising an emitter of electrons.

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  • Constitution Of High-Frequency Heating (AREA)
  • Microwave Tubes (AREA)
US751984A 1934-11-08 1934-11-08 Ultrashort wave oscillation generator circuit Expired - Lifetime US2108900A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL92204D NL92204C (fr) 1934-11-08
US751984A US2108900A (en) 1934-11-08 1934-11-08 Ultrashort wave oscillation generator circuit
DER94672D DE669324C (de) 1934-11-08 1935-11-09 Kurzwellen-Roehrengenerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US751984A US2108900A (en) 1934-11-08 1934-11-08 Ultrashort wave oscillation generator circuit

Publications (1)

Publication Number Publication Date
US2108900A true US2108900A (en) 1938-02-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
US751984A Expired - Lifetime US2108900A (en) 1934-11-08 1934-11-08 Ultrashort wave oscillation generator circuit

Country Status (3)

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US (1) US2108900A (fr)
DE (1) DE669324C (fr)
NL (1) NL92204C (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415470A (en) * 1943-04-21 1947-02-11 Rca Corp Magnetron
US2450629A (en) * 1944-03-14 1948-10-05 Gen Electric Ultra high frequency magnetron generator
US2454337A (en) * 1945-08-28 1948-11-23 Westinghouse Electric Corp Electronic device
US2457194A (en) * 1943-06-23 1948-12-28 Microwave oscillator
US2462877A (en) * 1942-11-23 1949-03-01 Standard Telephones Cables Ltd Electron discharge device
US2466067A (en) * 1942-12-07 1949-04-05 Sperry Corp High-frequency apparatus
US2474485A (en) * 1944-09-14 1949-06-28 Bell Telephone Labor Inc Magnetron oscillator
US2477317A (en) * 1945-03-21 1949-07-26 Raytheon Mfg Co Electron discharge device
US2481151A (en) * 1944-04-13 1949-09-06 Raytheon Mfg Co Electron discharge device
US2506752A (en) * 1944-07-22 1950-05-09 Rca Corp Electron discharge device employing cavity resonators
US2541026A (en) * 1943-06-19 1951-02-13 Clarence A Boddie Harmonic coaxial-line tube
US2548567A (en) * 1943-09-03 1951-04-10 Hartford Nat Bank & Trust Co Magnetron oscillator
US2551798A (en) * 1947-07-11 1951-05-08 Rca Corp Electronic transformer
US2565585A (en) * 1946-09-24 1951-08-28 Raytheon Mfg Co Electron-discharge device of the magnetron type
US2584802A (en) * 1947-01-18 1952-02-05 Rca Corp Very high-frequency electron tube
US2595677A (en) * 1948-05-27 1952-05-06 Rca Corp Electron discharge device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462877A (en) * 1942-11-23 1949-03-01 Standard Telephones Cables Ltd Electron discharge device
US2466067A (en) * 1942-12-07 1949-04-05 Sperry Corp High-frequency apparatus
US2415470A (en) * 1943-04-21 1947-02-11 Rca Corp Magnetron
US2541026A (en) * 1943-06-19 1951-02-13 Clarence A Boddie Harmonic coaxial-line tube
US2457194A (en) * 1943-06-23 1948-12-28 Microwave oscillator
US2548567A (en) * 1943-09-03 1951-04-10 Hartford Nat Bank & Trust Co Magnetron oscillator
US2450629A (en) * 1944-03-14 1948-10-05 Gen Electric Ultra high frequency magnetron generator
US2481151A (en) * 1944-04-13 1949-09-06 Raytheon Mfg Co Electron discharge device
US2506752A (en) * 1944-07-22 1950-05-09 Rca Corp Electron discharge device employing cavity resonators
US2474485A (en) * 1944-09-14 1949-06-28 Bell Telephone Labor Inc Magnetron oscillator
US2477317A (en) * 1945-03-21 1949-07-26 Raytheon Mfg Co Electron discharge device
US2454337A (en) * 1945-08-28 1948-11-23 Westinghouse Electric Corp Electronic device
US2565585A (en) * 1946-09-24 1951-08-28 Raytheon Mfg Co Electron-discharge device of the magnetron type
US2584802A (en) * 1947-01-18 1952-02-05 Rca Corp Very high-frequency electron tube
US2551798A (en) * 1947-07-11 1951-05-08 Rca Corp Electronic transformer
US2595677A (en) * 1948-05-27 1952-05-06 Rca Corp Electron discharge device

Also Published As

Publication number Publication date
DE669324C (de) 1938-12-22
NL92204C (fr)

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