US3011091A - Resonator for single-circuit magnetron - Google Patents

Resonator for single-circuit magnetron Download PDF

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Publication number
US3011091A
US3011091A US850185A US85018559A US3011091A US 3011091 A US3011091 A US 3011091A US 850185 A US850185 A US 850185A US 85018559 A US85018559 A US 85018559A US 3011091 A US3011091 A US 3011091A
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US
United States
Prior art keywords
anodes
resonator
magnetron
anode
circuit
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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
Application number
US850185A
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English (en)
Inventor
Christen Alfred
Weber Dieter
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
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Patelhold Patenverwertungs and Elektro-Holding 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
    • 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

  • the present invention relates to magnetron oscillators of the single-circuit type and more particularly to an improved construction for the resonator component thereof.
  • a resonator component for a single-circuit magnetron is known to consist of a metallic toroid-shaped hollow body of, for example, rectangular section, whose circular-cylindrical face, directed toward the axis, is divided into a plurality of anodes which are alternately connected with the two circular side walls of the resonator normal to the axis.
  • the provision of such a resonator with two rings, each connecting the anodes of equal phase with one another, to increase the oscillating stability, is known.
  • the arrangement of such rings at the free ends of the anodes has proved particularly advantageous.
  • the invention relates to an improved structural design of the resonator component of a single-circuit magnetron, in which the aforesaid disadvantages are eliminated. It aifords, as a technical advance, a reduction of rejects in the manufacture of the resonator and thus a reduction of the cost of the magnetron, as well as an increase of the power loss and effective power at the resonator.
  • a resonator designed according to the invention is characterized in that each ring together with the group of anodes assigned to it is of one-piece construction, and is connected at the anode roots, such as by soldering, with the corresponding side wall of the hollow body.
  • FIG. 1 of these drawings is a view in composite, angularly inclined radial sections of a resonator component showing the integrated anode and connecting ring structure, of the two anode groups;
  • FIG. 2 is a view in perspective of the utilized anode and connecting ring structure shown in FIG. 1;
  • FIG. 3 is a view in central vertical section of a slightly modified unitary anode and connecting ring structure taken on line 3-3 of FIG. 4;
  • FIG. 4 is a view in top plan of the anode-ring structure shown in FIG. 3.
  • the magnetron includes a metallic body, part of which is indicated by numeral 1 and which contains a hollow space 2 that forms the resonator cavity. Within this cavity are located the anodes which are arranged in two groups, the anodes of one group being interdigitated with the anodes of the other group. In FIG. 1, only an anode 5 of one group and an anode 6 of the other group are shown.
  • the anodes 5 and 6 which are made from conductive material have thickened root portions 7 which are connected, as by soldering, to the side walls which, in part, define the limits of the cavity.
  • Anodes 5 are joined to one side wall 1a of the cavity and anodes 6 are joined to the other side wall 1b.
  • the hollow body 1 is provided with a circular-cylindrical axial bore as part of the resonator cavity and the opposite ends of this bore are enlarged conically. Due to the fact that the anodes present root portions thickened radially outward, the necessary spacing from the other side wall of the body results as each piece is soldered in place to. its respective side wall. The opposite ends of the anodes 5,
  • the ring portion 3 together with the anodes 5 are made from a single piece of material, such as, for example, copper, and the general configuration is that of a crown. Consequently, the need for a soldered joint at the junction of the ring with the free ends of the anodes is eliminated by this newconstruction.
  • FIGS. 3 and 4 show another form of construction for the crown-shaped anode-ring piece, which is well suitable for manufacture in small lots.
  • the desired radial thickening of the anodes 5' at their roots 7 is here achieved by folding the end portions of the strips forming the anodes back and forth upon themselves once or several times.
  • the contact areas resulting between the individual layers of each strip are advantageously soldered together, either when connecting the piece with the hollow body or before, in a special operation.
  • the ring portion is indicatedat 3'.
  • the anode roots may be made wider in circumferential direction than the anodes themselves.
  • n being the number of anodes
  • copper is used as material for the pieces, this is readily possible, as such deformations can be eliminated again at the latest when soldering'the pieces .into the hollow bodies- I
  • both the hollow body and the crown-shaped pieces can be designed in a manner which meets the requirements of expedient mass production.
  • the manufacture of resonators according to the invention is possible at muchless expense than for instance the construction of multicavity resonators.
  • said root portions of said anodes are thickened in a radially outward direction.

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  • Microwave Tubes (AREA)
US850185A 1958-11-03 1959-11-02 Resonator for single-circuit magnetron Expired - Lifetime US3011091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH360134T 1958-11-03

Publications (1)

Publication Number Publication Date
US3011091A true US3011091A (en) 1961-11-28

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ID=4545069

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Application Number Title Priority Date Filing Date
US850185A Expired - Lifetime US3011091A (en) 1958-11-03 1959-11-02 Resonator for single-circuit magnetron

Country Status (6)

Country Link
US (1) US3011091A (xx)
CH (1) CH360134A (xx)
DE (1) DE1074162B (xx)
FR (1) FR1239691A (xx)
GB (1) GB883736A (xx)
NL (2) NL113349C (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456151A (en) * 1966-07-27 1969-07-15 Gen Electric Crossed-field discharge device and coupler therefor and microwave circuits incorporating the same
US3458755A (en) * 1966-06-02 1969-07-29 Gen Electric Crossed-field discharge device and microwave circuits incorporating the same
EP0300608A2 (en) * 1987-07-23 1989-01-25 English Electric Valve Company Limited Magnetrons

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500430A (en) * 1944-07-28 1950-03-14 Bell Telephone Labor Inc Cavity resonator oscillator device
US2609522A (en) * 1950-04-03 1952-09-02 Joseph F Hull Magnetron
US2648799A (en) * 1948-12-17 1953-08-11 Patelhold Patentverwertung Cavity resonator magnetron
US2890372A (en) * 1956-02-23 1959-06-09 Raytheon Mfg Co Traveling wave amplifiers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500430A (en) * 1944-07-28 1950-03-14 Bell Telephone Labor Inc Cavity resonator oscillator device
US2648799A (en) * 1948-12-17 1953-08-11 Patelhold Patentverwertung Cavity resonator magnetron
US2609522A (en) * 1950-04-03 1952-09-02 Joseph F Hull Magnetron
US2890372A (en) * 1956-02-23 1959-06-09 Raytheon Mfg Co Traveling wave amplifiers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3458755A (en) * 1966-06-02 1969-07-29 Gen Electric Crossed-field discharge device and microwave circuits incorporating the same
US3456151A (en) * 1966-07-27 1969-07-15 Gen Electric Crossed-field discharge device and coupler therefor and microwave circuits incorporating the same
EP0300608A2 (en) * 1987-07-23 1989-01-25 English Electric Valve Company Limited Magnetrons
EP0300608A3 (en) * 1987-07-23 1990-07-18 English Electric Valve Company Limited Magnetrons
US5061878A (en) * 1987-07-23 1991-10-29 English Electric Valve Company Limited Magnetron anode and method of manufacturing anode

Also Published As

Publication number Publication date
DE1074162B (xx) 1960-01-28
NL244930A (xx)
CH360134A (de) 1962-02-15
NL113349C (xx) 1966-11-15
FR1239691A (fr) 1960-12-09
GB883736A (en) 1961-12-06

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