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Title: Radio frequency noise generating magnetron
Claims: What we claim as new and desire to secure by Letters Patent of the United States is: 1. A magnetron discharge device for noise generation comprising an elongated cathode, a plurality of spaced anode segments surrounding said cathode to define a cylindrical space charge chamber, and means for establishing a radial electric field between said cathode and said anode segments for imparting an average rotational velocity about the cathode to an electronic space charge when a magnetic field is axially directed through the space charge chamber, said spaced segments and the gaps between them differing in relative widths whereby electrons traveling under different segments and gaps have different transit times. 2. A magnetron discharge device for noise generation comprising an elongated cathode, a plurality of spaced anode segment surrounding said cathode to define a cylindrical space charge chamber, means for establishing a radial electric field between said cathode and said anode segments for imparting an average rotational velocity about the cathode to an electronic space charge when a magnetic field is axially directed through the space charge chamber, said spaced segments and the gaps between them differing in relative widths whereby electrons traveling under different segments and gaps have different transit times, and a broadly tuned resonant output circuit coupled to said segments. 3. A magnetron discharge device for noise generation comprising an elongated cathode, a plurality of circumferentially spaced anode segments surrounding said cathode to define a cylindrical space charge chamber, and segments defining gaps therebetween means for establishing a radial electric field between said cathode and said anode segments for imparting an average rotational velocity about the cathode to an electronic space charge when a magnetic field is axially directed through the space charge chamber, said spaced segments and the interposed gaps having such widths that more than two successive gap-to-gap spacings are different whereby electrons traveling under different segments and gaps have different transit times. 4. A magnetron discharge device for noise generation comprising an elongated cathode, a plurality of spaced anode segments surrounding said cathode to define a cylindrical space charge chamber, means for establishing a radial electric field between said cathode and said anode segments for imparting an average rotational velocity about the cathode to an electronic space charge when a magnetic field is axially directed through the space charge chamber, the gaps between the spaced segments differing in relative widths whereby electrons traveling under different segments and gaps have different transit times. 5. A magnetron discharge device for noise generation comprising an elongated cathode, a plurality of anode segments surrounding said cathode to provide a space charge chamber therebetween, said segments defining gaps therebetween said segments and the interposed gaps having such dimension that more than two successive gap-to-gap spacings are different from one another, and means for coupling said segments to a common output circuit. 6. A magnetron discharge device for noise generation comprising a plurality of spaced anode segments arranged to define a substantially cylindrical space charge chamber, said segments defining gaps therebetween said segments and said gaps having such widths that more than two successive gap-to-gap spacings are different from one another and means for coupling said segments to a broadly tuned output circuit. 7. A magnetron discharge device comprising a plurality of pairs of anode segments surrounding a centrally disposed elongated cathode in which each anode segment has a different width. 8. A magnetron discharge device comprising more than two pairs of anode segments surrounding a centrally disposed elongated cathode in which each pair of anode segments has a different width. 9. A magnetron discharge device comprising a plurality of anode segments surrounding a centrally disposed elongated cathode in which the widths of adjacent anode segments are provided with opposite axial tapers. 10. A magnetron oscillator for producing high frequency noise comprising a magnetron discharge device having a plurality of anode segments surrounding a centrally disposed elongated cathode, said segments and the interposed gaps having such widths that more than two successive gap-to-gap spacings differ, means for providing a high density space charge in the space bebtween said cathode and anode segments, means for imparting an average angular velocity about the cathode to said space charge comprising means for establishing a static axial magnetic field and a radial electric field within said space, and means for coupling a broadly tuned resonant output system to said anode electrodes. 11. An electrical discharge device of the magnetron type for generation of noise oscillations comprising a helical coil constituting a portion of the resonant circuit, a cathode positioned within said spiral coil, and a plurality of electrodes positioned adjacent the inner periphery of said spiral coil, each of said electrodes being conductively connected to a different point on said spiral coil and spaced from each other to provide gaps between them, said electrodes and the interposed gaps having such widths that more than two successive gap-to-gap spacings are different. 12. An electrical discharge device of the magnetron type for generation of noise oscillations comprising a helical coil constituting a portion of a resonant circuit, a cathode positioned centrally within said spiral coil, and a plurality of anodes positioned adjacent the inner periphery of said spiral coil in a generally cylindrical configuration about said cathode, each of said anodes being conductively supported from a different point on said spiral coil and at least three of said electrodes having dissimilar widths to cause varying transit times of electrons traveling around said cathode and past said electrodes. Other info: Inventors: Wilbur, Donald A. (Albany, NY, US) Peters, Jr., Philip H. (Schenectady, NY, US) Application Number: 303725 Filing Date: 1952-08-11 Publication_date: 1976-05-18 Assignee: General Electric Company (Schenectady, NY) Primary Class(es): 315/39.65 315/39.75, 331/78 Other Classes: US Patent Ref:
Other Refs: Other References: "A Tunable Squirel Cage Magnetron", 4/47, pp. 362-369, Proc. of I.R.E., Vol. 35, No. 4. | |