US2079248A - Ultra high frequency magnetron discharge tube circuit - Google Patents

Ultra high frequency magnetron discharge tube circuit Download PDF

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US2079248A
US2079248A US41223A US4122335A US2079248A US 2079248 A US2079248 A US 2079248A US 41223 A US41223 A US 41223A US 4122335 A US4122335 A US 4122335A US 2079248 A US2079248 A US 2079248A
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anode
circuit
frequency
conductor
current
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Fritz Karl
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Telefunken AG
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Telefunken AG
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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
    • H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
    • H01J25/52—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/18—Tubes with a single discharge path having magnetic control means; having both magnetic and electrostatic control means
    • 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
    • H03B9/10—Generation of oscillations using transit-time effects using discharge tubes using a magnetron
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
    • H03C5/02—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube
    • H03C5/04—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube the tube being a magnetron

Definitions

  • the present invention is concerned with a circuit arrangement designed for the generation, detection, amplification, and multiplication of oscillations, more particularly of ultra-high frequency oscillations. It relates also to electron discharge tubes of the magnetron type and of suitable design for controlling the paths of electrons.
  • a magnetron is a charge tube in which a constant or a varying magnetic field governs the path or trajectory of electricity carriers. at least a cathode and an anode 'or plate. Without a magnetic field, it is incapable of fulfilling its function, because it is the magnetic field which produces a useful non-linearity of the tube characteristic in the neighborhood of the working point.
  • magnetron tubes may be excited by the aid of direct current magnetic fields. It is likewise known that for amplifying relatively lowfrequency oscillations a magnetron may be operated when its magnetic field is excited by an alternating current.
  • the lines'of force of the field are in both cases rectilinear inside the discharge'path and parallel in reference to the axis of the anode system or the heating wire.
  • the magnetron circuit arrangement of this invention is especially well designed for the generation, reception, detection, amplification or fre- 5 quency multiplication of ultra-short waves. It has this outstanding characteristic feature that for the purpose of acting upon the paths of the electrons, recourse is had to a circular-symmetric magnetic field which is set up by the aid of a linear conductor which is normally not heated and which is placed symmetrically'in reference to the anode surface.
  • tubes built as symmetrically as feasible and which comprise at least two anode parts as in an ordinary split anode magnetron.
  • the anodes form an approximately closed hollow surface of revolution.
  • the linear conductor before mentioned (hereinafter called the deflector) which serves to create the circular-symmetric magnetic field forms the axis of rotation of the several anode members. 'Directly or nearly in the electric and the geometric points of symmetry of the system comprised by the-deflector and anode members, at close proximity to the former, are arranged the punctiform or circular electron emission sources.
  • the anode members form an approximately closed surface presenting rotation symmetry.
  • Each of the anode members of the embodiments shown in Figs. 1 to '7 inclusive and 11 to 13 inclusive is preferably conformed to a spherical surface.
  • Theanode' members of the embodiments shown in'Flgsl 8 and 9 are preferably cylindrical in shape.
  • the anodes of the embodiment shown in Fig. 10 are partly cylindrical and partly conical. In every case, however, "the anode members constitute shielding means whereby the discharge path is protected against outside fields.
  • the closed form of anode moreover, makes conditions so that the radiation resistance of the electrode assembly or system is minimized. Such radiation as may exist is restricted to the breadth of slit. Thus I avoid the wasteful dissipation of a large part of the generated energy.
  • the electron paths are maintainedalways in a direction away from the oathode.
  • the stream of electrons in'the present scheme is caused to proceed by tions of space under conditions which, from the viewpoint of time, have been made non-equivalent by the oscillation process.
  • This point is extremely essential seeing that it renders the use of highemission oxide-coated cathodes (having no pronounced saturation) possible. These cathodes represent an extremely abundant and copious electron source per unit of surface or area.
  • FIG. 1 is a circuit diagram of an oscillation generator and amplifier in which the principles of my invention are illustrated;
  • Figs. 2, 3, 4 and 5 show various modifications suitable for frequency multiplication
  • Figs. 6 and '7 show self-sustaining oscillation generators of two different types
  • Fig. 8 shows a push-pull type of self-sustaining oscillation generator
  • Fig. 9 shows a master controlled radio-frequency amplifier
  • Figs. 10 and 11 show two illustrative embodiments in eachof which the oscillation circuit'is combined with the utilizationcircuit;
  • Figs. 12 and 13 illustrate two difierent receiving circuits wherein the invention is carried out.
  • Fig. 1 illustrates the fundamentals of a magnetron type oscillator of the kind here disclosed and designed for master operation and excitation. Control action upon the electrons in a tube R113 obtained by an alternating magnetic field presenting circular symmetry.
  • the cathode I0 is confined to a space as close to the center of the spherical anodes as it is possible to place it. In the figure, it is shown in section and it will be understood to be looped around the conductor S while being insulated therefrom.
  • the emission of electrons from a centrally disposed cathode toward a surrounding system-of anodes is such that the electrons describe spiral or hellcal paths under the influence of a polar magnetic field whose axis is coincident with the helical axis. If the polarity of the magnetic field is reversed, then the direction of rotation of the electrons around the polar or helical axis will be reversed.
  • the conductor S is adapted to carry a heavy alternating current.
  • the spiral paths of the electrons emitted from the cathode 10 will be diverted toward first the anode A1 and then the anode A2 in accordance with the reversal of current in the conductor S.
  • oscillations will be produced in the closed loop circuit including the anodes A1 and A2, together with the inductance L.
  • the control current is assumed to be derived from master os- CillSAiOlbRz.
  • the oscillatory circuit of the master oscillator R2, and the control circuit comprising deflector S and capacitance C of tube R1 are connected by means of a suitable feeder K, having a linear conductor 2
  • the amplified radio frequency energy may be derived from the oscillation circuit consisting of the inductance L and the mutual capacitance between the anode members A1 and A2, or. in any other convenient manner.
  • the magnetron oscillator of this invention subject to magnetic master control action represents a separately excited ultra-short-wave transmitter which is sensibly free from reactions.
  • magnetrons subject to master voltage excitation it has never been possible in the prior art to preclude completely the reactions or the main transmitter upon the master oscillator.
  • the diiliculties attendant upon amplification of ultra-short waves are largely due to the inter-electrode capacitances which produce currents that are improperly phased with respect to the space current energy. Upon attempting to surpass previous limits of high frequency generation, the displacement currents ultiniately exceed the electronic currents so that the amplifier as such becomes useless.
  • a useful oscillation current may be derived from the amplifier R1 .by coupling a utilization device to the inductance L. This current will not react adversely upon the electron' control action.
  • the phase relations between the control current flowing in S and the alternating voltage between A1 and A2 ' is immaterial, seeing that the oscillatory cir-- cults are completely separated one from the other. Save for such losses as are generally inevitable, the control action is free from dissipation of energy.
  • Figs, 2 to 5 fundamentally, show magnetron oscillators similar to the one in Fig. 1, though operating as frequency multipliers.
  • the frequency derived at the output end is higher than the frequency put into the control circuit C20S-20.
  • - Frequency multiplication is obtained by virtue of the rotation-symmetric anode surface which is split into a plurality of ring-like members A1, A2, As, etc. These anode members may be conformed to a spherical surface and are inter-connected by way of inductances I! which bear a relationship to the desired output frequency.
  • the connection of the anode members with the plate-potential source may be effected in such a fashion that the oscillations of higher frequencywhich are excited during the various phases of the fundamental input frequency become additively superposed in the load circuit, or in their field in case of direct radiation.
  • a frequency-multiplier magnetron it is usual to provide a single cathodeor electron supply source.
  • This cathode is placed in the geometric center of the system consisting of the currentpath and the anode members.
  • This electron fan is subject to the control of deflector action of the radio frequency II and I2 represent the paths of two i, 2, 8, l, 8, etc. become eifective successive current flowing through S and produces a sweep of the electrons across the constituent anode splits A1, A2, A:
  • the length of time for which the electron fan stays on each anode member must be uniform and equal.
  • the breadth of the annular anode splits or members must be chosen with due regard for the instantaneous angular speed of the electron fan, and the frequency mu]; tiplier factor is a function of the number of the anode splits.
  • the useful output energy'at the multiple frequency may be taken over by an inductive coupling between the various loop circuits I1 and the single loop IS, the terminals of which are capacitively coupled at [9 as shown in Fig. 2.
  • Fig. 3 In Fig. 3
  • the ring 23 may, if desired, comprise a radiator.
  • the frequency multiplier action may be caused to impress the'desired multiple .frequencynpon a coil 15 which is inductively related to a coil IS in a load circuit.
  • Fig. 5 shows a frequency multiplier wherein the several anode members have output leads 25 all inter-connectedata radio frequency nodal point :5 so as to be supplied with anodepotential from any suitable direct current source as indicated at +3.
  • the separate leads 25 may be inductively coupled to a loop 18 in an output circuit which also ineludes the capacitor i9.
  • FIG. 6 I show another modification of my .invention.
  • a self oscillatory magnetron circuit is provided.
  • the members 29 are capacitively coupled thereto.
  • the capacitive members 29 are in circuit with an inductance 28 from which output energy may be derived in any suitable manner.
  • the oscillator circuit includes the' cathode 10 which is fed by heating current'through the twisted pair of wires 25, this current being de rived from any suitable source as through the transformer 26.
  • a center tap on the secondary of this transformer leads to the negative side of a direct currentsource 27 and the positive side of this source is suitably connected to the deflector conductor S.
  • the oscillatory circuit of the oscillator consists of the capacities of the anode members A1, A2, and the inductance of the deflector conductor S.
  • the oscillation circuit itself, as will thus be noted, controls the flow or passage of electrons from the source I 0 to the anode splits A1, A2. up by the oscillatory current moves about the conductor S as the axis of circular symmetry.
  • the electron source II) is disposed at a neutral 'point I of the entire system and is formed symmetrically about conductor S. The phase shift required for the self-excitation of oscillations between the controlled electron stream and the plate alternating voltage must be secured by adjustment of the reactions in relation to the transit time of the electrons.
  • phase angle 90 degrees between current and voltage
  • the simplest plan is to so adjust the constant current plate voltage with respect to the frequency determined by the oscillatory circuit of the tube that the finite transit time of the electrons will restore the requisite phase relation.
  • the presence of a high capacity in the oscillation circuit, as provided by the cooling means 29 adjacent the anode is very advantageous since the ratio L/Cshould be kept low for maintaining a control current of high amplitude.
  • Fig. 7 shows still another self-oscillatory mag-' netron oscillator subject to audio frequency modulation control. Inside the deflector conductor S, and insulated from the latter by insulation 30 The active magnetic field set is disposed a conductor 3! which may be employed for modulating the currents of the oscillation generator.
  • the modulation source is shown at 32 and is coupled through the transformer 33 to the control circuit including the conductor 38.
  • the use of a circular-symmetric magnetic field designed to influence the electron paths is not limited to radio frequency current control;
  • the same field may be controlled to similar advantage by voltage variations.
  • the anode of the voltage-controlled self-oscillatory magnetron must be split at least twice, as shown in Fig. 8.
  • the oscillatory circuit is interpositioned between the anode members 36 and 31, or corresponding anode groups.
  • the sense of flow of electrons is in this, instance determined byv the direction of a constant magnetic field...
  • the design of the magnetron tube shown in Fig. 3 is such that two cathodes E1 and E2 are provided.
  • phase shift is unnecessary because the radio frequency potentials which exercise a control action upon the stream of electrons are due to regeneration and to the oscillatory characteristics of the output circuit.
  • Fig. 8 may easily be'modified to include certain of the features of Fig. 1, thus providing a master-controlled, push-pull amplifier.
  • Fig. 9 also suggests 5 a means for accomplishing this end.
  • the I I through zero, or twice per cycle of the modulation anode members 38 serve as push-pull exciters under control of energy from the source K.
  • Radio'frequency output current to a' utilization circuit may be made by inductive or capacitive coupling or conductively if -stricted to the exemplified embodiments illusdesired. But the mode of delivery isnot retrated in the drawings. In fact, any suitable and well known transfer means may be employed.
  • Fig. 10 shows an example of capacitive transfer means. applied directly to the deflector conductor S.
  • Fig. 11 shows a self-oscillatory alternating current-controlled magnetron in which a. spark or are discharge path is used as the source of the electrons?
  • The'pscillation circuit consists of the two anode parts A1 and A'r'and the conductor S.
  • conductor S is fitted with capacia anodes.
  • tive balls B by the aid of which the radiation resistance of the dipole arms V can be adjusted to obtain an impedance match with respect to the internal impedance of the oscillator at the working frequency.
  • the discharge gap is excited bymeans of a conductor 44 which is brought out at suitable nodal points along the extensions V of conductor S and thence through a resistance 45 to a source of current 46.
  • the electric center of the source of emission is artificially imitated outside the oscillator. Modulation of the oscillator is obtained magnetically.
  • the deflector or conductor S must carry the modulation frequency in addition to radio frequency.
  • Anode potential is supplied by way of a mid-tap on the secondary winding of a modulation transformer 41 and thence through leads -Z to the anode parts A1 and A2.
  • the conductor S which in this case surrounds the discharge path, is provided above the electron source with apertures 48 designed to allow of the escape of the electrons.
  • auxiliary electrodes H insulated fromS are provided, and these m be raised to any desired potential.
  • Figs. 12 and 13 illustrate two different embodiments of receiving circuits.
  • the receiving dipole comprises an extended conductor S. This dipole is arranged tobe excited with electrical energy from end to end as induced therein by received radiant energy. The currents induced in this dipole, therefore, act to deflect the paths of electrons from the cathode I0 to the surrounding When the apparatus is employed as a receiver it is unnecessary for the dipoleconductor S to be electrically'connected to any other portions of the device. Witha view to enhancing the directional properties the entire arrangement may be furnished with a reflector or mirror.
  • the electron source I0 is shown at the center of the system.
  • A1, A2 and A3 are anode members or splits. Adjustments are made so that in the absence of signals substantially the entire electron emission current flows to the central split A3. Hence, the electron fan must be so formed that, when striking the central anode member M, it will roughly have the same width as that member...
  • the receiving circuit ,of Fig. 12 comprises a bridge rectifier 49 and a sound responsive device 50 so connected to the anodemembers A1, A2
  • Fig. 13 shows an embodiment of receiving apparatus which differs from that of Fig. 12 chiefly trol circuit CS,-20.
  • the radio-frequency potential between anode members A1 and A2 is immaterial so far as the electron paths II and I2 are concerned. electrons subject to the influence of an alternating magnetic field Band I! respectively, during two different alternations.
  • a useful oscillation current may be derived from the amplifier R1 by coupling a utilization device to the inductance L. This current will not react adversely upon the electron control action.
  • the phase relations between the control current flowing in S and the alternating voltage between A1 and A2 is immaterial, seeing that the oscillatory circuits are completely separated one from the other.
  • Figs. 2 to 5 fundamentally, show magnetron oscillators similar to the one in Fig. 1, though operating as frequency multipliers.
  • the frequency derived at the output end is higher than the frequency put into the control circuit C20-S20.
  • Frequency multiplication is obtained by virtue of the rotation-symmetric anode surface which is split into a plurality of ring-like members A1, A2, Aaetc. These anode members may be conformed to a spherical surface and are inter-connected by way of inductances I! which beara relationship to the desired output frequency.
  • connection of the anode members with the plate-potential source may be effected in such a fashion that the oscillations of higher frequencywhich are excited during the various phases of the fundamental input frequency become additively superposed in the load circuit, or in their field in case of direct radiation.
  • a frequency-multiplier magnetron it is usual to provide a single cathodeor electron supply source.
  • This cathode is placed in the geometric center of the system consisting of the currentpath and the anode members.
  • This electron fan is subject to the control or deflector action of the radio frequency II and i2 represent the paths of two' suitable direct current source as indicated at +3.
  • FIG. 6 I show another modification of my invention.
  • a self oscillatory magnetron circuit is provided.
  • the members 29 are capacitively coupled thereto.
  • the capacitive members 29 are in circuit with an inductance 28 from which output energy may be derived in any suitable manner.
  • the oscillator circuit includes the' cathode III which is fed by heating current through the twisted pair of wires 25, this current being derived from any suitable source as through the transformer 26.
  • a center tap on the secondary of this transformer leads to the negative side of a direct currentsource 21 and the positive side of this source is suitably connected to the deflector conductor S.
  • This circuit is subject to control action by a circular-symmetric alternating magnetic field.
  • the oscillatory circuit of the oscillator consists of the capacities of the anode members A1, A2, and the inductance of the deflector-conductor S.
  • the oscillation circuit itself, as will thus be noted, controls the flow or i, 2, 6, I, 8, etc. become effective successive current flowing through S and produces a sweep 50 of the electrons across the constituent anode splits A1, A2, A:
  • the length of time for which the electron fan stays on each anode member must be uniform and equal.
  • the breadth of the annular anode splits or members must be chosen with due regard for the instantaneous angular speed of the electron fan, and the frequency multiplier factor is a function of the number of the anode splits.
  • the useful output energy'at the multiple frequency may be taken over by an inductive coupling between the various loop circuits [1 and the single loop l8, the terminals of which are capacitively coupled at I! as shown in Fig. 2.
  • Fig. 3 the same inductive relationship exists between the loops 22 and the ring 23, the terminals of which are inter-coupled capacitively at 2'4.
  • the ring 23 may, if desired, comprise a radiator.
  • the frequency multiplier action may be caused to impress thei'desired' multiple .fre quencyupon a coil [5 which is inductively related to a coil IS in a load circuit.
  • Fig. 5 shows a frequency multiplier whereinthe several anode members have output leads 25 all inter-connected at"a radio frequency nodal point 35 so as to be supplied with anodepotential from any passage of electrons from the source ill to the anode splits A1, A2.
  • the active magnetic field set up by the oscillatory current moves about the conductor S as the axis of circular symmetry.
  • the electron source I0 is disposed at a neutral point of the entire system and is formedsymmetrically about conductor S.
  • the phase shift required for the self-excitation of oscillations between the controlled electron stream and the plate alternating voltage must be secured by adjustment of the reactions in relation to the transit time of the electrons.
  • phase angle of 90 degrees between current and voltage
  • the simplest plan is to so adjust the constant current plate voltage with respect to the frequency determined by the oscillatory circuit of the tube that the finite transit time of the electrons will restore the requisite phase relation.
  • the presence of a high capacity in the oscillation circuit, as provided by the cooling means 29 adjacent the anode is very advantageous since the ratio L/Cshould be kept low for maintaining a control current of high amplitude.
  • Fig. 7 shows still another self-oscillatory mag-' netron oscillator subject to audio frequency modulation control. Inside the deflector conductor S, and insulated from the latter by insulation 30 The separate leads 25 may be inductively coupled is disposed a conductor 35 which may be employed for modulating the currents of the oscillation generator.
  • the modulation source is shown at 32 and is coupled through the transformer 33 to the control circuit including the conductor 3i.
  • the use of a circular-symmetric magnetic field designed to influence the electron paths is not limited to radio frequency current control;
  • the same field may be controlled to similar advantage by voltage variations.
  • the anode of the voltage-controlled self-oscillatory magnetron must be split at least twice, as shown in Fig. 8.
  • phase shift is unnecessary because the radio frequency potentials which exercise a control action upon the stream of electrons are due to regeneration and to the oscillatory character: istics of the output circuit.
  • Fig. 8 may easily be'modified to include certain of the features of Fig. 1, thus providing a master-com trolled, push-pull amplifier.
  • Fig. 9 also suggests a means for accomplishing this end.
  • the anode members 38 serve as push-pull exciters under control of energy from the source K. Simultaneously, the anode member 38 oscillates irf phase opposition to the anode members 31.
  • Radio'frequency output current to a utilization circuit may be made by inductive or capacitive coupling or conductively if desired. But the mode of delivery isnot retrated in the drawings. In fact, any suitable and well known transfer means may be employed.
  • Fig. 10 shows an example of capacitive transfer means. applied directly to the deflector conductor S.
  • Fig. 11 shows a self-oscillatory alternating current-controlled magnetron in which a spark or are discharge path is used as the source of the "electrons
  • The, oscillation circuit consists of the two anode parts A1 and Arand the conductor S.
  • conductor S is fitted with capacie tive balls B by the aid of which the radiation resistance of the dipole arms V can be adjusted to obtain an impedance match with respect to the internal impedance of the oscillator at the working frequency.
  • the discharge gap is excited by means of a conductor 44 which is brought out at suitable nodal points along the extensions V of conductor S and thence through a resistance to a source of current 46.
  • the electric center of the source of emission is artificially imitated outside the oscillator. Modulation of the oscillator is obtained magnetically.
  • the deflector or conductor S must carry the modulation frequency in addition to radio frequency.
  • Anode potential is supplied by way of a mid-tap on the secondary winding of a modulation transformer 41 and thence through leads 2 to the anode parts A1 and A2.
  • the conductor S which in this case surrounds the. discharge path, is provided above the electron source with apertures 48 designed to allow of the escape of the electrons.
  • auxiliary electrodes H insulated from S are provided, and these m be raised to any desired potential.
  • Figs. 12 and 13 illustrate two different embodiments of receiving circuits.
  • the receiving dipole comprises an extended condu'ctor S.
  • This dipole is arranged to be excited with electrical energy from end to end as induced therein by received radiant energy.
  • The. currents induced in this dipole therefore, act to deflect the paths of electrons from the cathode iii to the surrounding anodes.
  • the apparatus is employed as a receiver it is unnecessary for the dipole conduc- -tor S to be electrically conpected to any other portions of the device.
  • the electron source i0 is shown at the center of the system.
  • A1, A2 and A3 are anode members or splits. Adjustments are made so that in the absence of signals substantially the entire electron emission current flows to the central split A3.
  • the electron fan must be so formed that, when striking the central anode member As, it will roughly have the same width as that member.
  • the receiving circuit of Fig. 12 comprises a bridge rectifier 49 and a sound responsive device so connected to the anode members A1, A: and A: that full wave rectification-of the modulation frequency may be impressed across the ;terminals of the sound responsive device.
  • the cathode i0 is energized in the same manner as shown in Fig. 6, while 'anode potential may be impressed upon the anodes from the direct current source 21 and leading through the rectifier bridge 49.
  • ALA and A3 to the sound responsive device 50.
  • is suitably connected with the sound responsive device 50 and with the anode membersAi and A2 for demodulating the currents arising upon the reception of the modulated ultra-high frequency signals.
  • This circuit also includes choke coils 52 disposed between the anode potential source 21 and the anode members A1 and A2 so as to avoid the dissipation of ultra-high frequency energy.
  • auxiliary electrodes 43 may be included in These electrodes will be understood to have impressed upon them a suitable direct current bias potential in order to further control the electronic action within the tube.
  • a magnetron discharge tube having a plurality of anode members the inner surfaces of which are substantially conformed to a spherical surface, a cathode disposed as near as possible to the center of the spherical system, a magnetic fieldproducing conductor extending diametrically through the spherical system, means for so en-' ergizing the cathode and the anode members as to set-up electronic emission therebetween, means for applying alternating potentials to said fieldproducing conductor for variably controlling the direction of electronic paths within the tube, and means for utilizing the output energy available from different ones of said anode members when in circuit with the cathode 2.
  • a device in accordance with claim 1 and
  • said means for applying alternating potentials to said field producing conductor is constituted by a master oscillator.
  • a self-oscillating magnetron discharge tube circuit having a plurality of spherically segmerited anode members and a centrally disposed cathode included in the electron discharge tube thereof, means including a conductor perpendicularly disposed with respect to the planes of segmentation of said anode members for producing a deflection of electronic emission successively toward different ones of said anode members, and means for compensating for the phase displacement of the anode currents with respect to input currents impressed upon said perpendicularly disposed conductor, which phase displacement is inherently due to the transit time of the electrons from the cathode to each anode member.

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FR (1) FR794253A (enrdf_load_stackoverflow)
GB (1) GB462252A (enrdf_load_stackoverflow)
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Cited By (6)

* 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
US2456896A (en) * 1944-08-08 1948-12-21 Westinghouse Electric Corp Ultra high frequency device
US2504329A (en) * 1944-04-05 1950-04-18 Bell Telephone Labor Inc Oscillation damping device
US2616043A (en) * 1946-02-16 1952-10-28 O'neill Henry Murray Electronic oscillatory device
US2673928A (en) * 1950-09-20 1954-03-30 Gen Electric Apparatus for imparting high energy to charged particles
US2869012A (en) * 1955-10-10 1959-01-13 Rudolf A Muller Thermionic device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745670C (de) * 1936-02-25 1944-03-24 Winfried Otto Schumann Dr Ing Anordnung zur Erzeugung kurzer elektrischer Wellen in einer Glimm- oder Bogenentladungsroehre mit Gittersteuerung

Cited By (6)

* 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
US2504329A (en) * 1944-04-05 1950-04-18 Bell Telephone Labor Inc Oscillation damping device
US2456896A (en) * 1944-08-08 1948-12-21 Westinghouse Electric Corp Ultra high frequency device
US2616043A (en) * 1946-02-16 1952-10-28 O'neill Henry Murray Electronic oscillatory device
US2673928A (en) * 1950-09-20 1954-03-30 Gen Electric Apparatus for imparting high energy to charged particles
US2869012A (en) * 1955-10-10 1959-01-13 Rudolf A Muller Thermionic device

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NL43146C (enrdf_load_stackoverflow)
FR794253A (fr) 1936-02-12

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