US2541195A - Resonator with multiple electrodes - Google Patents

Resonator with multiple electrodes Download PDF

Info

Publication number
US2541195A
US2541195A US695025A US69502546A US2541195A US 2541195 A US2541195 A US 2541195A US 695025 A US695025 A US 695025A US 69502546 A US69502546 A US 69502546A US 2541195 A US2541195 A US 2541195A
Authority
US
United States
Prior art keywords
anode
segments
resonator
casing
multiple electrodes
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
US695025A
Other languages
English (en)
Inventor
Arnold E Bowen
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
Bell Telephone Laboratories 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
Priority to BE473975D priority Critical patent/BE473975A/xx
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US695025A priority patent/US2541195A/en
Priority to FR947740D priority patent/FR947740A/fr
Application granted granted Critical
Publication of US2541195A publication Critical patent/US2541195A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01J25/50—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
    • H01J25/54—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 having only one cavity or other resonator, e.g. neutrode tubes
    • H01J25/56—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 having only one cavity or other resonator, e.g. neutrode tubes with interdigital arrangements of anodes, e.g. turbator tube

Definitions

  • This invention relates to vacuum tubes and more particularly to an anode structure integral with and enclosed by a resonating chamber or substantially non-radiating resonator for electromagnetic waves.
  • the structure of the invention is particularly adapted for, but not limited to, use in a multiple anode magnetron oscillator for generating waves a few centimeters or less in length.
  • the anode elements are formed in two subassemblles attached respectively to a pair of end members, the latter being fitted into the ends of a tubular casing and arranged so that the respective sets "of anode elements are interleaved. Access to the interior of the structure for purposes of coupling may be had through a slot in the casing or in any other suitable manner.
  • the assembled anode structure may be mounted within an evacuated envelope.
  • the objects of the invention are improvement in frequency stability and increase in .efliciency of oscillation generators as well as greater facility in their construction.
  • the reduction of radiation losses due to the form of structure employed results in an increased ratio of reactanoe to resistance, commonly referred to as the Q of the system.
  • a high value of Q promotes both frequency stability and efficiency.
  • Electrons in first passing along *a'path in the vicinity of the gap between two adjacent anode segments are subjected to a sorting action according to the particular phase'of the oscillations during which the individual elec- '1 tron passes the gap.
  • the distance between adjacent gaps is inversely proportional to the nuniber of segments 50 that a smaller electron velocity and hence a smaller anode voltage is required to get the electrons from one gap to the next in one half period.
  • a reasonably high anode voltage it may be preferable to employ a reasonably high anode voltage and increase the diameter of the anode structure accordingly. In this way greater ease in fabricating the parts andin their assembly can be had as well as larger output'jof oscillations.
  • Fig. 1 is a view in perspective and partially in section or broken away, showing a vacuum tube assembly embodying the invention
  • Fig. 2 is an exploded view of the anode structure of th tube shown in Fig. 1.
  • the rod I3 is conductively and mechanically attached to a tubular casing l5.
  • the casing is countersunk at each end to receive members it and ll,-respectively.
  • the member is has attached to or integrally formed therewith a plurality of spaced cylindrical segments l8 and I9. Similar segments 20 and 25 are associated with the member I! and when assembled in the casing Hi, the segments 20 and ii are slightly separated from and interleaved with the segments i8 and It.
  • a slot 22 is provided in the casing I 5 to accommodate a coupling conductor 23 which may be formed to make a loop inside'the casing 15. The ends of the conductor 23 may be led out through the envelope l0 rication standpoint.
  • Magnetizing coils 35 and 36 may be provided to supply an axial magnetomotive force. coaxial with the filament 32 and the anode structure I4.
  • the casing 15 together with the members It and I! and the end plates 28 and 29 comprise a. substantially non-radiating resonance chamber which in itself tends to give a high value. of Q.
  • Ohmic losses are reduced by virtue of the large surfaces presented for the flow of high frequency currents; the inner surfaces of the parts being preferably of high electrical conductivity.
  • the casing l5 and the members l6 and; H are also preferably made to have a large thermal capacity and are placed in good thermal contact with each other to assist in cooling the anode. during operation. vohmic losses contributes further to a high value of Q and the improved cooling facilities perthe handling of large amounts of. power.
  • the parts may conveniently be made of metal of, good conductivity, such as copper, which is .readily machined in a lathe and the conductivity ,of the inner surfaces may be increased if desired, by gold or silver plating-or in any other "suitable manner.
  • anode segments any desired number of segments may be used. It is not necessary that the anode segments be cylindricahand in the case of a large number of segments, it may be particularly desirazble that the segments take the form of wires or rods in which case the anode assembly would be of a squirrel cage type with alternate wires connected to opposite end walls of the cylindrieal resonant cavity. The structure of this sort has.
  • An oscillatory system comprising a hollow continuous length of conductive cylinder hav ing countersunk ends, first and second annular disc end members, each fitted. into one of said countersunk. ends of said hollow cylinder, a. first plurality of spaced cylindrical segments each ,having one free endand the other end conductively attached to said first annular end memher, the, free end of each segment of said first plurality extending in the direction toward said second annular end member, a second plurality ofcylindrical segments spaced from and interleaved with said first plurality of cylindrical segments, said second plurality of cylindrical segments each having one end free and the other end being conductively attached to said second annular end member, the free end of each.
  • said second plurality of cylindrical segments extending in the. direction toward said first annular end, member, said first and second. pluralities' of anode segment all being coaxial with. said hollow conductive cylinder and defining there.- withandwith said first and second annular end members a substantially closed cavity resonator coupled to a central reaction space through the spaces between said interleaved cylindrical segments.

Landscapes

  • Microwave Tubes (AREA)
US695025A 1946-09-05 1946-09-05 Resonator with multiple electrodes Expired - Lifetime US2541195A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE473975D BE473975A (en, 2012) 1946-09-05
US695025A US2541195A (en) 1946-09-05 1946-09-05 Resonator with multiple electrodes
FR947740D FR947740A (fr) 1946-09-05 1947-06-09 Résonateur à électrodes multiples

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US695025A US2541195A (en) 1946-09-05 1946-09-05 Resonator with multiple electrodes

Publications (1)

Publication Number Publication Date
US2541195A true US2541195A (en) 1951-02-13

Family

ID=24791257

Family Applications (1)

Application Number Title Priority Date Filing Date
US695025A Expired - Lifetime US2541195A (en) 1946-09-05 1946-09-05 Resonator with multiple electrodes

Country Status (3)

Country Link
US (1) US2541195A (en, 2012)
BE (1) BE473975A (en, 2012)
FR (1) FR947740A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728029A (en) * 1950-05-11 1955-12-20 Collins Radio Co Interdigital magnetron

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2115521A (en) * 1936-04-30 1938-04-26 Telefunken Gmbh Magnetron
US2144222A (en) * 1935-08-15 1939-01-17 Telefunken Gmbh Electron discharge device
US2145361A (en) * 1936-02-28 1939-01-31 Rca Corp Electronic discharge device
US2147159A (en) * 1937-04-17 1939-02-14 Cie Generale De Telegraphic Sa Magnetron oscillator and detector
US2147143A (en) * 1937-07-24 1939-02-14 Rca Corp Magnetron detector circuit
US2167201A (en) * 1935-06-28 1939-07-25 Pintsch Julius Kg Electron tube
US2278210A (en) * 1940-07-05 1942-03-31 Bell Telephone Labor Inc Electron discharge device
US2409222A (en) * 1941-07-19 1946-10-15 Bell Telephone Labor Inc Electron discharge device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2167201A (en) * 1935-06-28 1939-07-25 Pintsch Julius Kg Electron tube
US2144222A (en) * 1935-08-15 1939-01-17 Telefunken Gmbh Electron discharge device
US2145361A (en) * 1936-02-28 1939-01-31 Rca Corp Electronic discharge device
US2115521A (en) * 1936-04-30 1938-04-26 Telefunken Gmbh Magnetron
US2147159A (en) * 1937-04-17 1939-02-14 Cie Generale De Telegraphic Sa Magnetron oscillator and detector
US2147143A (en) * 1937-07-24 1939-02-14 Rca Corp Magnetron detector circuit
US2278210A (en) * 1940-07-05 1942-03-31 Bell Telephone Labor Inc Electron discharge device
US2409222A (en) * 1941-07-19 1946-10-15 Bell Telephone Labor Inc Electron discharge device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728029A (en) * 1950-05-11 1955-12-20 Collins Radio Co Interdigital magnetron

Also Published As

Publication number Publication date
FR947740A (fr) 1949-07-11
BE473975A (en, 2012)

Similar Documents

Publication Publication Date Title
Granatstein et al. Vacuum electronics at the dawn of the twenty-first century
US3432721A (en) Beam plasma high frequency wave generating system
US2250698A (en) Magnetron
US2419172A (en) Electron discharge device having coupled coaxial line resonators
US3221204A (en) Traveling-wave tube with trap means for preventing oscillation at unwanted frequencies
US3453483A (en) Microwave linear beam tube employing an extended interaction resonator operating on an odd pi mode
US2128235A (en) Vacuum discharge tube
CN119297061B (zh) 加载二次谐波腔的低磁场高效率同轴相对论速调管振荡器
US3432722A (en) Electromagnetic wave generating and translating apparatus
US3376466A (en) Coaxial magnetron having magnetic return path through the cylindrical anode
US2414084A (en) Tunable resonator and oscillator
US3189843A (en) Multiple tunnel diode resonant cavity oscillator
US2485401A (en) Magnetron
US2541195A (en) Resonator with multiple electrodes
US3223882A (en) Traveling wave electric discharge oscillator with directional coupling connections to a traveling wave structure wherein the number of coupling connections times the phase shift between adjacent connections equal an integral number of wavelengths
US3289035A (en) Reverse magnetron having means to suppress undersired modes
US3376463A (en) Crossed field microwave tube having toroidal helical slow wave structure formed by a plurality of spaced slots
US2775721A (en) Electron discharge devices
US3289023A (en) Magnetron with helical cathode held by support, the output and mode suppression means being remote from the cathode support
US3457490A (en) Multipactor rectifier
US2547503A (en) Multiresonator magnetron
US4742271A (en) Radial-gain/axial-gain crossed-field amplifier (radaxtron)
US3289036A (en) Inverted magnetron having adjacent anode cavities coupled in opposite phase to a central stabilizing cavity
US3192430A (en) Microwave amplifier for electromagnetic wave energy incorporating a fast and slow wave traveling wave resonator
Dohler et al. Peniotron oscillator operating performance