US2617961A - Electron tube for very high frequencies - Google Patents

Electron tube for very high frequencies Download PDF

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Publication number
US2617961A
US2617961A US794143A US79414347A US2617961A US 2617961 A US2617961 A US 2617961A US 794143 A US794143 A US 794143A US 79414347 A US79414347 A US 79414347A US 2617961 A US2617961 A US 2617961A
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US
United States
Prior art keywords
cathode
bars
tube
high frequencies
electron tube
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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
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US794143A
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English (en)
Inventor
Bruck Lothar
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.)
CIE GENERAL DE T S F
GENERAL DE T S F Cie
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CIE GENERAL DE T S F
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 CIE GENERAL DE T S F filed Critical CIE GENERAL DE T S F
Application granted granted Critical
Publication of US2617961A publication Critical patent/US2617961A/en
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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
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field

Definitions

  • the space surrounding the cathode must be, according to the invention, divided up into sectors consistent with a suitable grouping of the electrons for a given frequency. Only the sectors having suitable phase relations will be travelled through by the electrons; and in the other sectors there Will be no electrons. That division into sectors can be determined by means of bars or rods B (Fig. 4) carried to a negative potential with regard to the cathode K and placed before or behind the positive grid G. The bars B are parallel with the cathode K.
  • Fig. 4 is a view similar to Fig. 3, with parts designated by the same reference letters, showing a tube according to the invention equipped with these bars 13.
  • Fig. 1 In the elevational portion of Fig. 1 there is shown by way of illustration a system N1, N2 formed of two solenoids in opposition, capable of establishing the radial magnetic field heretofore described. I have designated the connection to the inner end A of the spiral through a coaxial cable B1, C1 similar to the coaxial cable R2, C2 where the outer conductor R1 connects with the envelope M and the inner end conductor C1 connects to the inner terminal of the spiral S2.
  • Another process for changing the frequency to be amplified consists in displacing the sectors containing the electrons by carrying the bars B to different potentials. Indeed by changing these potentials it is possible to displace the sectors of grouping so as to obtain a frequency variation.
  • the slits F of the guide are made narrower by means of spiral plates applied against the cut-out edges along L in the guide Figs. 3 and 5).
  • the transit time in each one of the slits becomes small enough to permit the transfer of energy from the electrons to the wave in each one of the slits considered alone.
  • Fig. 5 shows a perspective view of a non-limiting example of a form of tube having such slits F.
  • the figure shows the tube in perspective out by a median plane.
  • the emissive cylindrical cathode In the center of the tube at K, is the emissive cylindrical cathode, surrounded by the grid G formed of metallic bars likewise distributed on a cylinder co-axial to said cathode.
  • W I At W I have shown the focalizing wehnelt of the electronic beam.
  • the walls of the rectangular guide are split and wound in spirals as shown at P.
  • a and E designate respectively rectangular guides serving as energy inlet and evacuation channels.
  • a traveling wave tube comprising a retardaspirals, means comprising an ultra-high frequency conduit coupled with said input for injecting therein ultra-high frequency waves for the two spirals situated near their center, means for injecting into the space between these spirals an electron beam emanating from the center of the spirals and directed along their radii, and means for giving to the beam of electrons a velocity substantially equal to the apparent velocity of phase propagation of the wave in the radial direction.
  • a traveling wave tube as set forth in claim 1, wherein the means for injecting the beam comprise a cathode situated in the center of the spirals and surrounded by a grid connected to source of positive potential relative to the cathode.
  • a traveling wave tube as set forth in claiml wherein the emitting system of the beam comprises a cathode surroundedby a network of bars connected to sources of negative potentialrelative to the cathode and serving to cut up the electronic emission into a plurality of radial beams.
  • a traveling wave tube as set forth in claim 1, wherein the emitting system of thebeam comprises a cathode surrounded by a network of bars connected to sources of negative potential relative to the cathode and serving to cut up the electronic emission into a plurality of radial beams, and means for making the potentials of these bars vary.
  • a traveling wave tube as set forth in claim 1, wherein the emitting system of the beam comprises a cathode surrounded by a network of bars connected to sources of negative potential with respect to the cathode and servingto cut up the electronic emission into a plurality of radial beams, said bars being equally spaced in a circular path.

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  • Microwave Tubes (AREA)
US794143A 1947-01-08 1947-12-27 Electron tube for very high frequencies Expired - Lifetime US2617961A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR877915X 1947-01-08

Publications (1)

Publication Number Publication Date
US2617961A true US2617961A (en) 1952-11-11

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ID=9361223

Family Applications (1)

Application Number Title Priority Date Filing Date
US794143A Expired - Lifetime US2617961A (en) 1947-01-08 1947-12-27 Electron tube for very high frequencies

Country Status (4)

Country Link
US (1) US2617961A (fr)
CH (1) CH271763A (fr)
DE (1) DE877915C (fr)
FR (1) FR940052A (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712614A (en) * 1950-06-30 1955-07-05 Univ Leland Stanford Junior Travelling wave tubes
US2730648A (en) * 1949-02-04 1956-01-10 Csf Travelling-wave tube
US2859380A (en) * 1953-12-30 1958-11-04 Raytheon Mfg Co Traveling wave oscillators
US2892963A (en) * 1953-12-30 1959-06-30 Edward C Dench Traveling wave oscillator
US2926279A (en) * 1956-07-05 1960-02-23 Nat Res Dev Linear particle accelerator
US2951173A (en) * 1947-11-25 1960-08-30 Csf Traveling wave tube oscillators
US2977502A (en) * 1957-02-26 1961-03-28 Raytheon Co Electronic discharge devices of the magnetron type
US3005129A (en) * 1957-03-19 1961-10-17 Raytheon Co Magnetron oscillators
US3746915A (en) * 1972-03-15 1973-07-17 Us Army Traveling wave tube with planar equiangular spiral slow wave circuit
US3971966A (en) * 1975-08-14 1976-07-27 The United States Of America As Represented By The Secretary Of The Army Planar ring bar travelling wave tube
EP0191790A1 (fr) * 1984-07-30 1986-08-27 The Commonwealth Of Australia Dispositif de retard pour guides d'ondes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005198B (de) * 1954-12-11 1957-03-28 Telefunken Gmbh Elektrische Entladungsroehre nach dem Lauffeldprinzip

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2064469A (en) * 1933-10-23 1936-12-15 Rca Corp Device for and method of controlling high frequency currents
US2298949A (en) * 1940-04-20 1942-10-13 Int Standard Electric Corp Radial form ultra-high frequency tube
US2300052A (en) * 1940-05-04 1942-10-27 Rca Corp Electron discharge device system
US2320860A (en) * 1939-12-22 1943-06-01 Int Standard Electric Corp Electron discharge apparatus
US2367295A (en) * 1940-05-17 1945-01-16 Bell Telephone Labor Inc Electron discharge device
US2402983A (en) * 1941-11-26 1946-07-02 Raytheon Mfg Co Electronic discharge tube
US2420342A (en) * 1943-03-18 1947-05-13 Bell Telephone Labor Inc High frequency continuous amplifier
US2457524A (en) * 1945-05-26 1948-12-28 Bell Telephone Labor Inc Wave guide repeater
US2514678A (en) * 1942-06-30 1950-07-11 Bell Telephone Labor Inc Wave guide system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2064469A (en) * 1933-10-23 1936-12-15 Rca Corp Device for and method of controlling high frequency currents
US2320860A (en) * 1939-12-22 1943-06-01 Int Standard Electric Corp Electron discharge apparatus
US2298949A (en) * 1940-04-20 1942-10-13 Int Standard Electric Corp Radial form ultra-high frequency tube
US2300052A (en) * 1940-05-04 1942-10-27 Rca Corp Electron discharge device system
US2367295A (en) * 1940-05-17 1945-01-16 Bell Telephone Labor Inc Electron discharge device
US2402983A (en) * 1941-11-26 1946-07-02 Raytheon Mfg Co Electronic discharge tube
US2514678A (en) * 1942-06-30 1950-07-11 Bell Telephone Labor Inc Wave guide system
US2420342A (en) * 1943-03-18 1947-05-13 Bell Telephone Labor Inc High frequency continuous amplifier
US2457524A (en) * 1945-05-26 1948-12-28 Bell Telephone Labor Inc Wave guide repeater

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951173A (en) * 1947-11-25 1960-08-30 Csf Traveling wave tube oscillators
US2730648A (en) * 1949-02-04 1956-01-10 Csf Travelling-wave tube
US2712614A (en) * 1950-06-30 1955-07-05 Univ Leland Stanford Junior Travelling wave tubes
US2859380A (en) * 1953-12-30 1958-11-04 Raytheon Mfg Co Traveling wave oscillators
US2892963A (en) * 1953-12-30 1959-06-30 Edward C Dench Traveling wave oscillator
US2926279A (en) * 1956-07-05 1960-02-23 Nat Res Dev Linear particle accelerator
US2977502A (en) * 1957-02-26 1961-03-28 Raytheon Co Electronic discharge devices of the magnetron type
US3005129A (en) * 1957-03-19 1961-10-17 Raytheon Co Magnetron oscillators
US3746915A (en) * 1972-03-15 1973-07-17 Us Army Traveling wave tube with planar equiangular spiral slow wave circuit
US3971966A (en) * 1975-08-14 1976-07-27 The United States Of America As Represented By The Secretary Of The Army Planar ring bar travelling wave tube
EP0191790A1 (fr) * 1984-07-30 1986-08-27 The Commonwealth Of Australia Dispositif de retard pour guides d'ondes
EP0191790A4 (fr) * 1984-07-30 1987-01-20 Commw Of Australia Dispositif de retard pour guides d'ondes.

Also Published As

Publication number Publication date
DE877915C (de) 1953-05-28
FR940052A (fr) 1948-12-02
CH271763A (fr) 1950-11-15

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