US2088722A - Vacuum tube with tank circuits - Google Patents

Vacuum tube with tank circuits Download PDF

Info

Publication number
US2088722A
US2088722A US84968A US8496836A US2088722A US 2088722 A US2088722 A US 2088722A US 84968 A US84968 A US 84968A US 8496836 A US8496836 A US 8496836A US 2088722 A US2088722 A US 2088722A
Authority
US
United States
Prior art keywords
tank
circuit
capacity
inductance
grid
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
US84968A
Other languages
English (en)
Inventor
Potter Ralph Kimball
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Application granted granted Critical
Publication of US2088722A publication Critical patent/US2088722A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/78—One or more circuit elements structurally associated with the tube
    • H01J19/80—Structurally associated resonator having distributed inductance and capacitance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/36—Tubes with flat electrodes, e.g. disc electrode
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F3/52—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower with tubes only

Definitions

  • This invention relates to radio frequency oscillation generators and more particularly to generators of very high frequencies such as are used in so-called short-wave signaling.
  • Its purpose is to design an arrangement in which very high frequencies of great stability 10 are obtained and in such manner that the oscillations shall be relatively free from disturbances outside its own circuit and shall produce a. minimum of disturbances on or in adjacent surroundings. Its purpose is also that of providing an oscillatory circuit for a generator of very low damping factor.
  • a typejof impedance which may be called a tank impedance" and which, in one form, may consist essentially of a cylindrical conductor with both ends closed orvnearly closed.
  • a tank impedance which, in one form, may consist essentially of a cylindrical conductor with both ends closed orvnearly closed.
  • One simple form which. thetanb with a line circuit may take is that" of two *relatively small concentric conductors constituting the line over one end of which is placed a large concentric conductor with the one end closed by a disk to the inner of the pair of conductors and the other end closed by a diskto the outer of the pair of conductors.
  • Figs. 9a show important modifications of my circuit in which the amplifier elements necessary for the generator or amplifier are included within the tank.
  • the magnetic and electric fields exist outside as well as inside the coils and condensers of those circuits.
  • the external 7 field may be quite extensive but also may be very materially reduced by having it take the well known form of a toroid.
  • the characteristics of the toroid coil are desirable.
  • the inductance and capacities required become small and also the skin eifect increases in such manner that large conductors are needed in order to provide low loss circuits.
  • the inductance itself may then reduce to a single turn of heavy conductor, as illustrated in Fig. la, but in this case the magnetic field is widely distributed.
  • tank or tank circuit as used in this specification and the claims, is defined as an enclosing conducting vessel of one or more compartments, enclosing various associated elements, and in which the inner surface of the vessel constitutes an essential part of the path for high frequency currents.
  • a tank circuit with capacity included to form a resonant circuit is shown in Fig. 1b and may be looked upon as a figure of revolution, obtained by rotating the circult of Fig. 1a about the line b-b as an axis although not shown to scale, particularly as respects flanges a and d. If the circuit, of Fig. la had been circular instead of rectangular and a similar rotation had occurred, a tank of the form shown in Fig.
  • Fig. 2a there is shown a tank circuit replacing the conventional arrangement of coils and condensers.
  • the lead I which may be an antenna or any other output is shown connected to ground through the resonant circuit consisting of inductance and capacity.
  • the shape of the flanges is slightly modified, one of the extensions being omitted and the other being connected completely across the center for greater convenience in connecting the antenna.
  • the conventional form of circuit which is equivalent is shown in Fig. 2b.
  • Fig. 2a it should be emphasized that, at the frequencies contemplated, the currents are surface effects only and cannot pass through the body of the metal.
  • one path to ground is across the condenser a-d and the other is around the inductive path ar-bc-d inside the tank, that is, the circuit comprises a condenser and inductance in parallel as in Fig. 2b.
  • the high frequency magnetic field due to the current flowing on the outer surface of the inner cylinder of the tank cannot penetrate through the outer boundary of the tank, and thus the magnetic field due to current on the inner conductor is confined within the tank.
  • any of the high frequency currents flowing on the inner side of the outer cylinder will produce no magnetic field within the tank.
  • high frequency currents flowing on the outer surface of the outer cylinder will produce no magnetic field within the tank.
  • the outside of the tank may be considered the ground in the same way that a metal shield around a circuit is ordinarily taken as ground.
  • the tank might actually be buried in the ground, as shown in Fig. 2c.
  • the impedance to ground at resonance is determined by the resonant circuit constants similarly in all three cases.
  • the tank circuit here shown is of the type illustrated by Fig. 6a in my copending application.
  • Fig. 3a shows the use of the tank circuit in a vacuum tube oscillation generator, this being equivalent to the circuit of Fig. 3b, which in turn is a well known generator, frequently spoken of as the ultraudion oscillator.
  • Fig. 4a shows another circuit including my tank circuit and which is the equivalent of the circuit of Fig. 4b, this being an oscillator generator commonly spoken of as the dynatron oscillator.”
  • Fig. 5a I show a generator with two of my tanks, the circuit being the equivalent of that shown in Fig. 5b, sometimes called the tuned grid tuned plate oscillator.” It will be observed that each of the oscillator circuits of Fig. 5b has been replaced by tanks.
  • Figs. 6a and 6b are a pair of equivalent circuits and are the familiar Colpitts oscillators."
  • the conventional oscillatory circuit comprising 15 condensers Cl, C: and inductance L, is replaced by a tank of the form illustrated by Fig. 13 or 19 of my copending application.
  • the plates 0, d and b make the condensers C1 and C: of Fig. 6b.
  • Potential variations coming from the plate of the tube give rise to currents across the condensers in series and, in parallel to these condensers, through the inductance of the tank in a manner analogous to the circuit of Fig. 6b.
  • Figs. 7a and 7b also show a pair of equivalent circuits, the circuit of Fig. 7b being that commonly known in the art as the Hartley oscillator.
  • the conventional, oscillatory circuit comprising inductances L1, L2 and ondenser C, is replaced by a tank.
  • the connectisrgin the Hartley circuit from the filament to the int between the two inductances finds its equivalence in Fig. 7a by the connection to the midpoint of the tank inductance at M, and it is evident that this may be made adjustable to vary the ratio of the inductances L1 and L2.
  • connection may consist of a single radial conductor but for better current distribution may consist of several radial conductors or even a partition with a number of apertures which would determine the coupling between the two inductances.
  • This connection is obviously similar to the usual connection to some midpoint of a single turn inductance coil.
  • Figs. 8a and 8b represent the so-called Meissner oscillator", in which the resonant circuit, consisting of inductance L and capacity C, is replaced by my tank circuit.
  • the method of coupling L and L" to L is clearly shown in Fig. 8a and is equivalent to the usual method of coupling to a solenoidinductance.
  • the loops L and L" of Fig. 8a are arranged to include a suflicient amount of the magnitude flux within the tank inductance L to provide the required coupling.
  • Fig. 9a The arrangement shown in Fig. 9a is similar to that of Fig. 7a; that is to say, it is a Hartley type of oscillator circuit, but in Fig. 9a all of the parts, excepting the batteries, are placed within the tank circuit.
  • the axis of the tank may be looked upon as a vertical axis through the center of the tank. In general this tank will be of ample capacity to accommodate the vacuum tube and accompanying elements with suitable supports.
  • the vacuum tube VT with its filament, grid and plate, is mounted in the tank as shown and the condenser C leading from the grid to one terminal of the inductance formed by the tank, the resistance R connected between the grid and the filament, and the capacity C.
  • connection from the filament to the midpoint of the surface of the tank may all be suitably mounted within the tank itself. Connections will extend out through an opening in the bottom of the tank to the batteries for supplying the filament and plate currents.
  • the grid potential is, of course, derived through the drop of the resistance R.
  • the flanges near the center of the tank provide the main capacity C of the oscillator.
  • Fig. 9b shows an equivalent circuit employing l conventional types of electrical elements.
  • the main capacity C of the Hartley circuit corresponds to the capacity of the flanges in the center of the tank
  • the two inductances L1 and L3 are the inductances formed by the interior 15 surface of the tank, from the midpoint along the inner surface of the wall to the upper flange on the one hand, and over the inner surface of the wall of the lower half of the tank to the lower flange on the other hand.
  • the high frequency currents flowing over the inner surface of the tank will not be propagated out of the tank along the batteryconnections because the oscillatory currents are propagated over the interior surface of the tank and flow around the opening, instead 25 of across it, to the load circuit.
  • Fig. 10a shows an oscillator of the Colpitts type and is essentially the same in principle as the circuits of Figs. 6a and 6b.
  • the axis of the tank is longitudinal instead of vertical as 30 in Fig. 1b.
  • the outlet tubes of the tank are of smaller diameter and the capacity forming flanges are omitted, capacities being formed, however, between the inner surfaces of the outlet tubes and the outlet wires as shown at C and Co.
  • the vacuum tube is shown at VT within the tank and the two main tuning capacities C1 and C2 of the Colpitts type circuit are likewise mounted within the tank and are connected at their common point to the filament F, with their other terminals connected to the conductive outlet tubes through which external connections are made.
  • outlet tubes are also connected through capacities C5 and C4 to the grid G and plate P, respectively, of the vacuum tube.
  • the capacities C3 and C4 will also be mounted within the tank.
  • the grid potential is supplied from a battery which has one terminal connected to the outer surface of the tank (which may be grounded, if desired), the other terminal of the battery being connected to a conductor leading concentrically through the cylindrical outlet tube to the grid. There will be, of course, some capacity at C5 between this conductor and the inner wall of the cylindrical outlet tube.
  • the plate battery has one terminal connected to the outer surface of the tank and the other terminal is connected through a choke coil L4 to a conductor passing concentrically through the cylindrical outlet tube to the plate.
  • a ca- G0 pacity C5 will exist between the conductor and the outlet tube. If the capacities C5 and Co are sufiiciently large, the separate capacities C3 and 04 may be omitted.
  • the two conductors from the filament are connected through a double 65 wound choke coil L3, the one to the inner wall of the tank and the other through an opening in the wall of the tank to the filament battery, the other terminal of which is connected to the outer wall of the tank.
  • the currents flowing over the inner 70 walls of the tank from the terminals of the choke L3 to the capacities'C5 and Cs are subjected to the inductance effect of the walls of the tank.
  • the equivalent circuit is shown in Fig. 10b.
  • the Colpitts type circuit has 75 two capacities C1 and C: with their common terminal connected to the filament and with their opposite terminals connected to the grid and plate as shown in Fig. 10b, and with a single inductance connected from grid to plate in parallel to the two condensers.
  • the single inductance is divided into two parts L and L" which, from the high frequency alternating current standpoint, function as a single inductance.
  • a midtap is provided, however, for the necessary connection to permit the battery current to be supplied to the filament.
  • the inner surface of the tank walls provides an inductance (corresponding to L' and L" in Fig.
  • the tank has a horizontal axis and the circuit is essentially that of a Hartley oscillator.
  • the filament is connected to the midpoint of the inner surface of the tank by having one of the filament leads connected to the wall of a cylindrical outlet tube through the side wall of the tank, the other filament connection passing concentrically through this outlet tube to the battery, the other terminal of which is connected to the outer wall of the tank.
  • the inner surface of the tank is divided into two paths for the flow of current-from the filament to the grid on one hand and from the filament to the plate on the other, thus forming the two inductances L1 and L2 of the Hartley type oscillator as shown in Fig. 11b.
  • the main condenser C of the Hartley circuit has its terminals connected, respectively, to the outer surfaces of the cylindrical outlet tubes.
  • capacities C3 and C4 are connected between the outer surfaces of the outlet tubes and the grid and plate, respectively. These two capacities and capacity C are mounted within the tank as in the vacuum tube VT itself. Capacities C5 and Cs effectively in parallel with the capacities C3 and C4 exist between the outlet conductors and the cylindrical outlet tubes, the electrical equivalent being shown in Fig. 11b.
  • capacities C3 and C4 may be omitted if capacities C5 and C5 are sufficiently large.
  • the direct current potentials for the grid and plate are supplied in the same way as in Fig. 10a.
  • the output of the oscillator would be a radiating antenna or something equivalent thereto and, for illustrative purposes, antennae have been shown connected to the plate circuit of the tube VT in each of these figures.
  • the antenna is connected to the flat disc-like flange forming the lower plate of capacity C, and the current flows over this flange to the plate electrode of the tube VT.
  • the antenna ' is led in to the plate by a lead-in wire passing through the interior of the outlet tube of the tank.
  • This feature of enclosing the vacuum'tube and 5 certain auxiliary apparatus within the tank is suitable not only for oscillators but for amplifiersband'it may well bethat in any given case one could wish to redesign the vacuum tube in order to adapt it to the particular situation in hand.
  • the'vacuum tube might be redesigned so as to be built into and form a part of the tank structure'itseli.
  • FIG. 12a To make use of the circuit of Fig. 12a, as an amplifier for example, it is necessary to provide means to get into and out of the tank.
  • a practical amplifier circuit arrangement is shown in Fig. 13a with an input at the left and an output at the right in the form of concentric conductor transmission lines. TLi and Th2.
  • the three tube elements, filament F, grid G and plate P are surrounded by a glass envelope to provide tor the evacuation.
  • the envelope may in turn be and is here shown as enclosed within a conductive shell which provides additional capacity shunting the inter-element capacities.
  • the filament battery B1 is connected through the choke coil L: (with a winding in each filament lead) to conductors led in through the interior of a pipe forming the continuation of the central conductor of the concentric conductor transmission line TL1. From the inside of this pipe the filament leads pass through the glass walls of the vacuum tube 0 to the twoterminals of the filament F.
  • the plate supply from battery B2 is also ledthrough a choke 001114 to the central conductor of the output line TLa, and to the plate of the tube as shown.
  • Capacities C: and C are formed between the 5 two halves of the conductive shell with its flanges, and the mid-wall a: of the tank, and hence are in efiect connected to the grid G which is mounted in the mid-wall. This is shown in the equivalent circuit 0! Fig. 131) where capacities C: and C: are
  • the capacity C is in this manner connected directly to the plate but capacity C: is connected to the filament through the capacity '5 C: which exists btgeen the inner wall 0! the In the input there is a resonant circuit contain-.
  • a capacity Ci exists between the innersuriace oi the concentric conductor and the inner conductor oi the transmission line TLi.
  • a similar capacity C4 exists between the inner and outer conductors of the concentric transmission line 'I'La. High frequencies will not pass from the interior of said transmission line over the plate battery connection because of the choke coil L4 and because the high frequencies find a low impedance path around the opening in the wall.
  • the equivalent circuit shown in Fig. 13b illustrates the relative arrangements of the various capacities, inductances and other elements of the circuit.
  • the inductances L1 and L: are formed by the separate inner surfaces of the two compartments of the tank. It will be seen that a high frequency tuned circuit exists between filament F and grid G and between plate P and grid G. The former may be traced from the filament F, through the capacity Cr, through the capacity Cl and the inductance L1 to the grid, a parallel path extending from the capacity C1 through the capacity C: to the grid. Likewise the plate-grid circuit may be traced from the plate P through the capacity C4 in series with the inductance L2 to the grid, this capacity and inductance being shunted by the capacity C;.
  • Fig. 130. The essential elements of the circuit oi Fig. 130. are shown in simplified form in Fig. 130 and it will be noted that the input and output circuits are capacity coupled to the resonant tank circuits, since the capacities C1 and C4 of Fig. 13b are across the transmission lines Th1 and I10 and form with capacity C: and C3, respectively,
  • a signal input from the transmission line TL; of Fig. 130 sets up oscillations within the associated tank circuit and produces a resonant voltage between F and G.
  • the steady flow of electrons between F and P provided by the d -c field between these elements is, accordingly, modulated in the well known manner, and the field between G and F is varied in such a way as to set up am-' plified oscillations in the second circuit similar to those impressed in the first. It is, of course, necessary to adjust these circuits to provide reso nance as in any conventional amplifier of this type. This may be accomplished by varying the positions of the two conductive shells S1 and S2, or by any design of the structure which will permit equivalent variations. For example, we might make the length oi. one of the tank circuits adjustable, as indicated, by the sliding contact to the conductor TL1. I
  • the vacuum tubes used in Fig. 13a may be physically modified forms of any of a variety of tubes, either three-element or four-element tubes, or others, which are suitable for amplifiers or oscillation generators.
  • the elements may be concentrically arranged as shown in Fig. 14a
  • the grid and plate elements of the vacuum tube are in cylindrical form about a common axis with the filament located in said axis.
  • the cathode, grid and plate may be related to each other in the manner indicated in Fig. 14b.
  • a heater, a cathode, a grid and a plate element are shown with the grid placed between cathode and plate and forming a continuous mesh disc with a mesh or solid edge that is brought outside of the whole periphery of the vacuum tube.
  • the above mentioned contact may be broken by a spacer of some insulating material which would provide a low impedance path for the high-frequency currents while isolating the d-c potential.
  • Fig. 13a To make the amplifier arrangement of Fig. 13a function as an oscillator, it is necessary to provide coupling of suitable magnitude and phase between the oscillation in the first and second tank circuits.
  • Such coupling may be provided in a number of ways and, in particular, may be provided by apertures in the partition .1. Such apertures are shown at a and a in Fig. 15c which, it will be noted, is similar to Fig. 12a in the showing of a few essential elements.
  • the coupling between the two tank circuits will be dependent, among other things, upon the total area of the apertures.
  • FIG. 15a there is shown schematically an oscillator arrangement in which an aperture coupling between tank circuits, of the type just described, is used. There is also shown a capacity which isolates the grid.
  • the coupling aperture is provided in the mid-wall a: which, in this case, is connected directly to one-half of the conductive shell.
  • the grid is then mounted in another conductive plate between which and the mid-wall a: of the tank (a part of which is formed by one-half of the conductive shell) a capacity Ca exists. This capacity isolates the grid from themid-wall of the tank.
  • a similar capacity C exists between the plate in which the grid is mounted and the other half'of the conductive shell with its flanges, thereby isolating the grid from any connection to the walls of the tank 40 through the tubular conductor which permits of the battery connections to the heater H.
  • the capacity C2 also isolates the grid from the cathode F.
  • the aperture coupling is in reality an induc- 45 tive coupling since it permits current in one chamber to fiow into the other and this forms a conductor (or inductance) common to the two circuits.
  • the effect. of this will be clear from the equivalent circuit'shown in Fig; '15!) where 50 L1 and In representth'e inductances due .to the current flowing over the inner surfaces of the two compartments of the tank, while M represents the inductive coupling between the .two parts of the tank due to the current flowing". from 55 one compartment of the tank to the other through the aperture.
  • an opening in the partition running all the way around the vacuum tube forms a capacity common to the input and output circuits.
  • the grid is not only isolated by the capacity C3, as just stated, butit is also isolated from another standpoint by the capacity C: between the conductive shell and the mounting of the grid.
  • phase of the feed-back from one tank circuit to the other depends upon the relative size of these two coupling elements as in any conventional circuit. This provides means for adjusting the phase of the feed-back as is required.
  • the enclosing vessel might, for example, be a cube or other parallelopiped with the main entrances to the vessel at the centers of two opposite faces or at two opposite corners. Again the vessel may take on the form of a sphere with the chief entrance points at the ends of a diameter. In any of these cases the magnetic field set up within the vessel would probably be somewhat more distorted than in the case of a circular cylinder, but each vessel would have a definite inductance.
  • the entrance p'oints shall be symmetrically arranged as indicated above, but they might be at any two points on the vessel, although in that event the distortion in the magnetic field would be greater and the lack of symmetrical distribution of the surface currents would tend to make the losses somewhat larger.
  • an amplifier tube having electrodes, a plurality of inductances and capacities connected with stantially closed conducting vessel constituting said electrodes, a subwith enclosed elements a tank circuit, a conducting partition within said tank forming two chambers, connections from said electrodes to the inner surfaces of said chambers enabling current to flow over the inner surface of each chamber, the inner surface of each chamber thereby constituting one of said inductances.
  • an amplifier tube having cathode, anode and control electrodes, a plurality of inductances and capacities connected with said'electrodes, a substantially closed .conducting vessel constituting with enclosed elements a tank circuit, a conducting partition within said tank forming two chambers, connections from said-electrodes to the inner surfaces of said chambers enabling current to flow over the inner surface of each chamber, the inner surface of each chamberthereby constituting one of said inv ductances, the structure of the amplifier tube being mounted within the tank with the cathode electrode; in one chamber and the anode electrode 3.
  • an amplifier tube having cathode, anode and control electrodes, a plurality of inductances and capacities connected with said electrode, a substantially closed conducting vessel constituting with enclosed elements a tank circuit.
  • a conducting partition within said tank forming two chambers, connections from said electrodes to the inner surfaces of said chambers enabling current to fiow over the inner surface of each chamber, the inner surface of each chamber thereby constituting one of said inductances, the structure of the amplifier tube being mounted within the tank with the cathode electrode in one chamber, the anode electrode in the other chamber and the control electrode in the plane of the partition.
  • a vacuum tube having cathode, anode and control electrodes, a plurality of inductances and capacities connected with said electrodes, a substantially closed conducting vessel constituting with enclosed elements a tank circuit, a conducting partition within said tank forming two chambers, connections from said electrodes to the inner surfaces of said chambers enabling current to flow over the inner surface of each chamber, the inner surface of each chamber thereby constituting one of said inductances, the vacuum tube structure being mounted within the tank with the cathode electrode in one chamber, the anode electrode in the other chamber and the control electrode common to both chambers, and apertures in the partition for producing an inductive coupling between the input and output circuits of the tube.
  • a vacuum tube having cathode, anode and control electrodes, a plurality of inductances and capacities connected with said electrodes, a substantially closed conducting vessel constituting with enclosed elements 9. tanlmcircuit, a conducting partition within said tank forming two chambers, connections from said electrodes to the inner surfaces of said chambers enabling current to flow over the inner surface of each chamber, the inner surface of each chamber thereby constituting one of said inductances, the vacuum tube structure being mounted within the tank with the cathode electrode in-one chamber, the anode electrode in the other chamber and the control electrode common 'to both chambers, apertures in the partition 'for producing an inductive coupling between the input and output circuits of the tube, said tank structure having elements so formed as to produce with adjacent surfaces capacities for tuning the input and output circuits of the tube.
  • an amplifier tube having an input circuit and an output circuit, a substantially closed conducting vessel enclosing said tube and constituting a tank whose inner surface acts as an inductance with respect to currents flowing over it, a conducting partition within said tank forming two chambers, the one chamber being connected with the input circuit so that current flows over its inner surface and causes it to function as an inductance in the input circuit, and the other chamber being connected with the output circuit so that current fiows over its inner surface and causes it to function as an inductance in the output circuit.
  • an amplifier tube having cathode, anode and control electrodes, an input circuit connected with said cathode and an output circuit connected with said anode,-a substantially closed conducting vessel enclosing said tube and constituting a tankwhose inner surface acts as an inductance with respect to high-frequency currents flowing over it, a conducting partition within said tank forming two chambers, each chamber constituting an inductance, the vacuum tube being so mounted in the tank that its cathode electrode is in one chamber and its anode electrode in the other chamber, the one chamber being connected with the input circuit connected with the cathode electrode so that current flows over its inner surface and causes it to function as an inductance in the output circuit, and the other chamber being connected with the output circuit connected with the anode electrode so that current flows over its inner surface and causes it to function" as. an inductance in the output circuit.
  • an amplifier tube having cathode, anode and control electrodes, an input circuit connected with said cathode and an output circuit connected with said anode, a substantially closed conducting vessel enclosing said tube and constituting a tank whose inner surface acts as an inductance with respect to high frequency currents flowing over it, a conducting partition within said tank forming two chambers, each chamber constituting an inductance, the vacuum tube being so mounted in the tank that its cathode electrode is in one chamber and its anode electrode in the other chamber, the one chamber being connected with the input circuit connected with the cathode electrode so that current flows over its inner surface and causes it to function as an inductance in the input circuit, and the other chamber being connected with the output circuit connected with the anode electrode so that current flows over its inner surface and causes it to function as an inductance in the output circuit, and elements within said tank to produce capacities with certain of the surfaces of said tank, one of said capacities being included in" the input circuit and another of said capacities being included in the output

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Microwave Amplifiers (AREA)
  • Plasma Technology (AREA)
US84968A 1934-10-04 1936-06-12 Vacuum tube with tank circuits Expired - Lifetime US2088722A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US450280XA 1934-10-04 1934-10-04

Publications (1)

Publication Number Publication Date
US2088722A true US2088722A (en) 1937-08-03

Family

ID=21935618

Family Applications (2)

Application Number Title Priority Date Filing Date
US84968A Expired - Lifetime US2088722A (en) 1934-10-04 1936-06-12 Vacuum tube with tank circuits
US84967A Expired - Lifetime US2107387A (en) 1934-10-04 1936-06-12 Vacuum tube with tank circuits

Family Applications After (1)

Application Number Title Priority Date Filing Date
US84967A Expired - Lifetime US2107387A (en) 1934-10-04 1936-06-12 Vacuum tube with tank circuits

Country Status (4)

Country Link
US (2) US2088722A (US20100223739A1-20100909-C00025.png)
FR (1) FR798581A (US20100223739A1-20100909-C00025.png)
GB (1) GB450280A (US20100223739A1-20100909-C00025.png)
NL (1) NL43144C (US20100223739A1-20100909-C00025.png)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423327A (en) * 1942-10-02 1947-07-01 Gen Electric Ultra high frequency oscillator of the cavity resonator type
US2428013A (en) * 1942-06-30 1947-09-30 Louis H Crook Electron tube
US2428609A (en) * 1942-11-09 1947-10-07 Gen Electric High-frequency electric discharge device
US2443907A (en) * 1943-01-11 1948-06-22 Gen Electric High-frequency cavity resonator apparatus
US2451249A (en) * 1943-03-18 1948-10-12 Rca Corp Electron discharge device for ultra high frequencies
US2454560A (en) * 1942-10-02 1948-11-23 Gen Electric Ultra high frequency electric discharge device
US2457189A (en) * 1943-03-23 1948-12-28 Int Standard Electric Corp Ultra high frequency oscillation generator
US2459593A (en) * 1944-03-17 1949-01-18 Westinghouse Electric Corp Feed-back system for electronic tubes comprising hollow body resonators
US2462082A (en) * 1941-12-19 1949-02-22 Int Standard Electric Corp Thermionic valve
US2507972A (en) * 1942-07-25 1950-05-16 Rca Corp Electron discharge device and associated circuits
US2516887A (en) * 1943-10-30 1950-08-01 Int Standard Electric Corp Ultra high frequency radio receiver
US2519420A (en) * 1939-03-08 1950-08-22 Univ Leland Stanford Junior Thermionic vacuum tube and circuit
US2527549A (en) * 1943-02-04 1950-10-31 Jr Robert A Herring Concentric line construction
US2558021A (en) * 1939-03-08 1951-06-26 Univ Leland Stanford Junior Thermionic vacuum tube and circuit
US2582846A (en) * 1944-04-19 1952-01-15 Neher Henry Victor Microwave amplifier
US2615998A (en) * 1948-01-31 1952-10-28 Fed Telephone & Radio Corp Multistage cascade amplifier
US2619597A (en) * 1945-12-18 1952-11-25 Lawrence L Mlynczak High-frequency oscillator
US2685034A (en) * 1946-05-31 1954-07-27 James H Schaefer Coaxial line oscillator
DE944197C (de) * 1942-02-01 1956-06-28 Siemens Ag Hochfrequenzeinrichtung, insbesondere zur Frequenzumsetzung oder -vervielfachung
US2961578A (en) * 1957-10-02 1960-11-22 Radiation Inc Vacuum tube circuit
DE1135527B (de) * 1960-07-02 1962-08-30 Telefunken Patent Schaltungsanordnung zur Leistungsverstaerkung, Leistungsmischung oder Vervielfachung von sehr hohen Frequenzen mit Hilfe von Transistoren, die in Basisschaltung betrieben werden
DE976657C (de) * 1942-09-01 1964-01-30 Erhard Fasshauer Elektronenroehre fuer ultrakurze Wellen zur Erzeugung grosser Leistungen und Verfahren zu ihrer Herstellung

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB523712A (en) * 1937-10-11 1940-07-22 Univ Leland Stanford Junior An improved electrical discharge system and method of operating the same
US2416698A (en) * 1938-04-29 1947-03-04 Bell Telephone Labor Inc Radiation and reception of microwaves
DE969867C (de) * 1940-01-02 1958-07-24 Pintsch Bamag Ag Hohlraumresonator mit veraenderlicher Eigenfrequenz
DE750380C (de) * 1940-03-12 1945-01-06 Schwingungserzeugerschaltung fuer kurze oder ultrakurze Wellen
DE970149C (de) * 1940-05-17 1958-08-21 Western Electric Co Elektronenentladungs-Vorrichtung zur Verstaerkung einer hochfrequenten elektromagnetischen Welle
US2433386A (en) * 1941-09-26 1947-12-30 Standard Telephones Cables Ltd Ultra high frequency mixer circuit
US2428020A (en) * 1941-10-24 1947-09-30 Standard Telephones Cables Ltd Electron discharge tube for ultra high frequencies
US2439387A (en) * 1941-11-28 1948-04-13 Sperry Corp Electronic tuning control
NL60520C (US20100223739A1-20100909-C00025.png) * 1942-04-17
US2611079A (en) * 1942-07-27 1952-09-16 Arthur A Verela Duplexing device for transceiver antenna systems
DE971141C (de) * 1942-10-01 1958-12-18 Siemens Ag Elektronenroehre zur Erzeugung oder Verstaerkung sehr kurzer elektrischer Wellen
US2416319A (en) * 1942-10-08 1947-02-25 Standard Telephones Cables Ltd High-frequency oscillator
BE455111A (US20100223739A1-20100909-C00025.png) * 1943-03-06
BE477660A (US20100223739A1-20100909-C00025.png) * 1943-12-28
BE467878A (US20100223739A1-20100909-C00025.png) * 1944-08-08
US2523307A (en) * 1944-10-28 1950-09-26 Standard Telephones Cables Ltd Feedback coupling circuit
US2689915A (en) * 1944-11-04 1954-09-21 Us Navy Folded line oscillator
US2448713A (en) * 1944-12-02 1948-09-07 Rca Corp Radio listening buoy
US2513324A (en) * 1947-04-19 1950-07-04 Fed Telecomm Lab Inc Single tuned circuit ultra high frequency oscillator
US2556813A (en) * 1947-05-13 1951-06-12 Rca Corp Ultra high frequency thermionic tube
US2545106A (en) * 1948-04-30 1951-03-13 Rca Corp Applicator for radio-frequency heating
US2752495A (en) * 1951-05-08 1956-06-26 Rca Corp Ferroelectric frequency control
DE976253C (de) * 1952-04-10 1963-05-30 Standard Elek K Lorenz Ag Mischanordnung fuer Dezimeterwellen
NL171049B (nl) * 1952-06-18 Basf Ag Werkwijze voor het bereiden van 2-ethylhexanal-1.
US2783348A (en) * 1954-03-26 1957-02-26 Nat Cylinder Gas Co High-frequency heating applicators
US2783344A (en) * 1954-03-26 1957-02-26 Nat Cylinder Gas Co Dielectric heating systems and applicators
US2783349A (en) * 1954-03-26 1957-02-26 Nat Cylinder Gas Co High-frequency heating applicators
US3290614A (en) * 1964-03-20 1966-12-06 Sanders Associates Inc High frequency oscillator having distributed parameter resonant circuit
SE415420B (sv) * 1978-05-16 1980-09-29 Klaus Kulper Hogeffektkondensator med gasformigt dielektrikum

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558021A (en) * 1939-03-08 1951-06-26 Univ Leland Stanford Junior Thermionic vacuum tube and circuit
US2519420A (en) * 1939-03-08 1950-08-22 Univ Leland Stanford Junior Thermionic vacuum tube and circuit
US2462082A (en) * 1941-12-19 1949-02-22 Int Standard Electric Corp Thermionic valve
DE944197C (de) * 1942-02-01 1956-06-28 Siemens Ag Hochfrequenzeinrichtung, insbesondere zur Frequenzumsetzung oder -vervielfachung
US2428013A (en) * 1942-06-30 1947-09-30 Louis H Crook Electron tube
US2507972A (en) * 1942-07-25 1950-05-16 Rca Corp Electron discharge device and associated circuits
DE976657C (de) * 1942-09-01 1964-01-30 Erhard Fasshauer Elektronenroehre fuer ultrakurze Wellen zur Erzeugung grosser Leistungen und Verfahren zu ihrer Herstellung
US2423327A (en) * 1942-10-02 1947-07-01 Gen Electric Ultra high frequency oscillator of the cavity resonator type
US2454560A (en) * 1942-10-02 1948-11-23 Gen Electric Ultra high frequency electric discharge device
US2428609A (en) * 1942-11-09 1947-10-07 Gen Electric High-frequency electric discharge device
US2443907A (en) * 1943-01-11 1948-06-22 Gen Electric High-frequency cavity resonator apparatus
US2527549A (en) * 1943-02-04 1950-10-31 Jr Robert A Herring Concentric line construction
US2451249A (en) * 1943-03-18 1948-10-12 Rca Corp Electron discharge device for ultra high frequencies
US2457189A (en) * 1943-03-23 1948-12-28 Int Standard Electric Corp Ultra high frequency oscillation generator
US2516887A (en) * 1943-10-30 1950-08-01 Int Standard Electric Corp Ultra high frequency radio receiver
US2459593A (en) * 1944-03-17 1949-01-18 Westinghouse Electric Corp Feed-back system for electronic tubes comprising hollow body resonators
US2582846A (en) * 1944-04-19 1952-01-15 Neher Henry Victor Microwave amplifier
US2619597A (en) * 1945-12-18 1952-11-25 Lawrence L Mlynczak High-frequency oscillator
US2685034A (en) * 1946-05-31 1954-07-27 James H Schaefer Coaxial line oscillator
US2615998A (en) * 1948-01-31 1952-10-28 Fed Telephone & Radio Corp Multistage cascade amplifier
US2961578A (en) * 1957-10-02 1960-11-22 Radiation Inc Vacuum tube circuit
DE1135527B (de) * 1960-07-02 1962-08-30 Telefunken Patent Schaltungsanordnung zur Leistungsverstaerkung, Leistungsmischung oder Vervielfachung von sehr hohen Frequenzen mit Hilfe von Transistoren, die in Basisschaltung betrieben werden

Also Published As

Publication number Publication date
US2107387A (en) 1938-02-08
FR798581A (fr) 1936-05-20
NL43144C (US20100223739A1-20100909-C00025.png)
GB450280A (en) 1936-07-14

Similar Documents

Publication Publication Date Title
US2088722A (en) Vacuum tube with tank circuits
US2236004A (en) Ultra high frequency signaling system
US2175710A (en) Variable coupling arrangement
US2266262A (en) Antenna system for wireless communication
US2277638A (en) Ultra high frequency system
US2128234A (en) Electron tube
US1955093A (en) Oscillation circuit for electric waves
US2441452A (en) Frequency changing circuits
US2250308A (en) System for feeding a single utilization circuit with energy at two frequencies
US2404640A (en) Ultra high frequency signaltranslating apparatus
US2266500A (en) Energy transfer circuits
US2253849A (en) Short wave radio apparatus
US2395165A (en) High frequency transformer
US2522370A (en) High-frequency coupling device
US2476803A (en) High stability receiver circuit
US2272066A (en) Ultra short wave system
US2403782A (en) Resonator for discharge tubes
US2092708A (en) Radio-frequency inductance unit
US2013154A (en) Translating circuit
US2253381A (en) Harmonic reduction circuits
US2104915A (en) Tuned oscillator circuit
US2697137A (en) High-frequency amplifier
US1726580A (en) Thermionic vacuum tube
US1956582A (en) Radio receiving and transmitting apparatus
USRE21176E (en) Radio-frequency inductance unit