US2749477A - Cavity-resonator magnetron - Google Patents

Cavity-resonator magnetron Download PDF

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Publication number
US2749477A
US2749477A US277215A US27721552A US2749477A US 2749477 A US2749477 A US 2749477A US 277215 A US277215 A US 277215A US 27721552 A US27721552 A US 27721552A US 2749477 A US2749477 A US 2749477A
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US
United States
Prior art keywords
magnetron
terminal plates
anode block
cavity
cylindrical
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
US277215A
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English (en)
Inventor
Verweel Jan
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.)
Hartford National Bank and Trust Co
Original Assignee
Hartford National Bank and Trust Co
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 Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
Application granted granted Critical
Publication of US2749477A publication Critical patent/US2749477A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/165—Manufacturing processes or apparatus therefore

Definitions

  • a magnetron of the resonant cavity type comprises a pair of terminal plates each having a first cylindrical recess of given diameter concentric with a second cylindrical recess having alarger diameter than the given diameter and a pair of coaxial grooves opening into the cylindrical recesses.
  • An anode block having a plurality of resonant cavities fits within the larger cylindrical recesses of the terminal plates so that the opposing surfaces of the plates are in engagement with one another.
  • the anode block is also provided with a projecting portion which fits within the coaxial grooves and which contains a groove which connects with one of the cavities.
  • the groove of the projecting portion of the anode block and the coaxial grooves cooperate to form an H-shaped channel which is utilized to transfer the energy generated within the resonant cavities to a wave-guide which, in turn, transmits the energy to an external circuit.
  • the terminal plates are provided with a recess shaped to form a wave-guide adjoining the H-shaped channel and having a length of about half the length of a wave-guide for the magnetron. This arrangement avoids the separate operation of soldering of the wave-guide to the magnetron.
  • Fig. 1 is a perspective view of one form of terminal plate for a magnetron in accordance with the invention
  • Fig. 2 is a plan view of an anode block in accordance with the invention.
  • Fig. 3 is an end view of an assembled magnetron comprising the terminal plate shown in Fig. 1 and the anode block shown in Fig. 2;
  • Fig. 4 is a partial cross-sectional view of the assembled magnetron showing the cathode mounted in position.
  • a magnetron comprises a pair of terminal plates 1, 2 and an anode block 6.
  • the terminal plate 1 has a cylindrical recess 3 merging into a narrower cylindrical recess 7 to form an edge 4 located at a distance from an upper surface 5 of the plate 1 equal to about half the thickness of the anode block 6.
  • the narrowed portion 7 of the cylindrical cavity is utilized for providing end pieces 20, a cathode 21 and leads 22 (Fig. 4) for the magnetron and also serves as an end space therefor.
  • the cylindrical cavity 3, 7 merges on one side nited States Patent O 2 into a straight groove 8 having plane walls 9, the edge 4 extending on both sides as an edge 10.
  • the anode block 6 comprises a body portion shaped to fit within the larger cylindrical recess 3 and a projection 11 shaped to fit into the groove 8 which is split by means of a groove 12 extending into one of a plurality of resonant cavities 13 in the anode block 6.
  • the groove 12 of the projection 11, together with the narrow portions 14 of the groove 8 constitute an H-shaped channel (Fig. 3) which merges into a hollow wave-guide of which a portion 15, preferably half, is formed in each of the terminal plates 1, 2 by an extension 17 in such manner that the short side of the portion 15 of the waveguide extends parallel to the limbs of the H-shaped channel.
  • the portion 15 of the hollow wave-guide is adapted to be closed by a glass window, which is not shown for the sake of clarity.
  • a circular groove 16 is provided around the area at which the glass window is provided having a depth about equal to a quarter of a wave-length of the electrical oscillation occurring within the magnetron and having its upper edge approximately at a quarter of a wavelength from the hollow wave-guide.
  • a magnetron of the resonant cavity type comprising a pair of terminal plates each having a first cylindrical recess of given diameter and a second cylindrical recess having a larger diameter than said given diameter and concentric with the first cylindrical recess and two aligned communicating grooves opening into said cylindrical recesses, an anode block enclosed completely between said terminal plates comprising a main body portion having a shape which fits within said second cylindrical recesses of the terminal plates so that the opposing surfaces of the plates are in engagement with one another and a central bore extending through said body portion, a cathode member disposed within said bore, said anode block also defining a plurality of resonant cavities and having a projecting portion fitting within a portion of said aligned grooves and defining a groove extending therethrough which connects with one of said cavities, the groove in said projecting portion and the unoccupied portion of the aligned grooves in said terminal plates cooperating to form an H-shaped channel for transferring the energy generated within the resonant cavities.
  • a magnetron of the resonant cavity type comprising a pair of terminal plates each having a first cylindrical recess of given diameter and a second cylindrical recess having a larger diameter than said given diameter and concentric with the first cylindrical recess and two aligned communicating grooves opening into said cylindrical recesses, an anode block enclosed completely between said terminal plates comprising a main body portion having a shape which fits within said second cylindrical recesses of the terminal plates so that the opposing surfaces of the plates are in engagement with one another and a central bore extending through said body portion, a cathode ther having a recess of rectangular shape adjoining the 10 H-shaped channel, and solder means securing together the terminal plates along their engaged surfaces.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microwave Tubes (AREA)
US277215A 1951-04-05 1952-03-18 Cavity-resonator magnetron Expired - Lifetime US2749477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL302716X 1951-04-05

Publications (1)

Publication Number Publication Date
US2749477A true US2749477A (en) 1956-06-05

Family

ID=19783364

Family Applications (1)

Application Number Title Priority Date Filing Date
US277215A Expired - Lifetime US2749477A (en) 1951-04-05 1952-03-18 Cavity-resonator magnetron

Country Status (7)

Country Link
US (1) US2749477A (ja)
BE (1) BE510398A (ja)
CH (1) CH302716A (ja)
DE (1) DE911158C (ja)
FR (1) FR1053356A (ja)
GB (1) GB714450A (ja)
NL (1) NL85465C (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774912A (en) * 1955-09-27 1956-12-18 Kline Jack H-guide type coupling for coaxial output
US2932767A (en) * 1957-03-30 1960-04-12 Philips Corp Magnetron having wave-guide output
US5182493A (en) * 1990-02-06 1993-01-26 Eev Limited Rising sun magnetron with planar tuning member protruding into only one set of cavities
US20090218211A1 (en) * 2006-01-20 2009-09-03 Hongsheng Yang Recess Waveguide Microwave Chemical Plant for Production of Ethene From Natural Gas and the Process Using Said Plant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1391037A (fr) * 1964-01-15 1965-03-05 Lignes Telegraph Telephon Procédé perfectionné de réalisation de structures anodiques de magnetrons et magnétrons en résultant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466922A (en) * 1946-02-12 1949-04-12 Bell Telephone Labor Inc Electron discharge device
US2523841A (en) * 1946-06-21 1950-09-26 Bell Telephone Labor Inc Wave guide coupler
US2564716A (en) * 1942-10-01 1951-08-21 Westinghouse Electric Corp Magnetron and method of manufacture
US2579654A (en) * 1947-06-04 1951-12-25 Raytheon Mfg Co Electron-discharge device for microwave amplification

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE474540A (ja) * 1942-10-01
US2509419A (en) * 1945-04-09 1950-05-30 Raytheon Mfg Co Amplifier of the magnetron type

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564716A (en) * 1942-10-01 1951-08-21 Westinghouse Electric Corp Magnetron and method of manufacture
US2466922A (en) * 1946-02-12 1949-04-12 Bell Telephone Labor Inc Electron discharge device
US2523841A (en) * 1946-06-21 1950-09-26 Bell Telephone Labor Inc Wave guide coupler
US2579654A (en) * 1947-06-04 1951-12-25 Raytheon Mfg Co Electron-discharge device for microwave amplification

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774912A (en) * 1955-09-27 1956-12-18 Kline Jack H-guide type coupling for coaxial output
US2932767A (en) * 1957-03-30 1960-04-12 Philips Corp Magnetron having wave-guide output
US5182493A (en) * 1990-02-06 1993-01-26 Eev Limited Rising sun magnetron with planar tuning member protruding into only one set of cavities
US20090218211A1 (en) * 2006-01-20 2009-09-03 Hongsheng Yang Recess Waveguide Microwave Chemical Plant for Production of Ethene From Natural Gas and the Process Using Said Plant
US8337764B2 (en) * 2006-01-20 2012-12-25 Hongsheng Yang Recess waveguide microwave chemical plant for production of ethene from natural gas and the process using said plant

Also Published As

Publication number Publication date
NL85465C (ja)
CH302716A (de) 1954-10-31
FR1053356A (fr) 1954-02-02
DE911158C (de) 1954-05-10
BE510398A (ja)
GB714450A (en) 1954-08-25

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