US3588589A - Magnetron and connection system for magnetron - Google Patents

Magnetron and connection system for magnetron Download PDF

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Publication number
US3588589A
US3588589A US848506A US3588589DA US3588589A US 3588589 A US3588589 A US 3588589A US 848506 A US848506 A US 848506A US 3588589D A US3588589D A US 3588589DA US 3588589 A US3588589 A US 3588589A
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United States
Prior art keywords
magnetron
cathode
connection
coaxial
connection system
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
US848506A
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English (en)
Inventor
Marinus Arnoldus Vonk
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US Philips Corp
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US Philips Corp
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Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
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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
    • H01J23/14—Leading-in arrangements; Seals therefor
    • H01J23/15—Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices
    • 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
    • H01J23/005—Cooling methods or arrangements

Definitions

  • Trifari ABSTRACT An electron discharge tube with a coaxial pair of cathode connections The cathode voltage is supplied by means of a connection arrangement comprising a clamping pipe and a plug that is so constructed as to minimize leakage of microwave radiation.
  • MARINUs A. VONK MAGNETRON AND CONNECTION SYSTEM FOR MAGNETRON
  • the invention relates to a magnetron in which a cathode is supported by a coaxial cathode connection which is passed to the outside through one ofthe pole shoes and which comprises within a conductive tube a conductive rod which is separated from the tube by an insulator.
  • the invention furthermore relates to a connection system for such a magnetron.
  • Such a magnetron having a helical cathode is known from US. patent specification 3,289,023.
  • the rod is secured to the tube by means of an annular insulator, while the tube is connected to the housing of the magnetron by means of a conical insulator.
  • the drawback presents itselfthat a larger microwave radiation than is desirable can occur from the annular insulator which separates the conductors from the cathode connection, which radiation is not suppressed by a conventional filter for TV and radio radiation.
  • connection system in a magnetron of the type mentioned in the preamble, a connection system is clamped to the cathode connection which connection system comprises a plug which comprises two coaxial rings connected at one end by a disc-shaped part, ofwhich rings the innennost clamps the said rod, and which connection system comprises a clamping pipe which clamps the said tube, said clamping pipe extending in the space between the said rings in such manner that it constitutes a choke.
  • the invention also concerns the connection system as described which can be connected to existing magnetrons.
  • FIG, I is a cross-sectional view parallel to the axis of the magnetron according to the invention.
  • FIG. 2 is a cross-sectional view at right angles to the axis
  • FIG. 3 shows the connection system for the magnetron mainly in a cross-seetional view
  • FIG. 4 is an elevation in the direction of the axis of the connection system.
  • reference numeral 1 denotes the anode construction
  • the cathode connection is formed by the rod 6 and the tube 2 which is coaxial with said rod.
  • the actual cathode is the helical wire 3 which at one end is secured to the end flange 4 of the tube 2 and at its other end is connected to the plate which is supported by the rod 6.
  • the flange 4 and the plate 5 also serve as end rings to focus the electrons on the inwardly directed ends of the anode segments.
  • the cathode connection is supported by the conical insulator 7 secured to the anode cover. Inside the anode cover the poleshoes 10 are situated.
  • the actual anode 8 which is situated within the annular anode housing 12 comprises the interaction space 9 which is bounded by the ends of the anode segments 13.
  • the anode segments 13 constitute the resonant cavities 14 as shown in FIG. 2.
  • the anode segments are alternately connected to the conductive rings 16 and 17 which extend in the profiled grooves 18 of the anode segments on the side of anode segments remote from the cathode support 2.
  • a transverse connection 15 which ends in the anode segments which bound two successive resonant cavities, is connected to the inner conductor 23 of the coaxial line of the output coupling system.
  • the outer conductor of the coaxial line is denoted by 19.
  • the output coupling system as a whole is denoted by 11.
  • the outer conductor 19 terminates in the flange 22, to which the flange 21 ofa connection ring 20 of the conical insulator 25 is secured.
  • the inner conductor 23 terminates in a hollow pin 24 which can be coupled further to a coaxial line or can be inserted in a resonant cavity ofa waveguide.
  • FIG. 1 shows the plug assembly comprising an inner hollow cylinder 102, an outer hollow cylinder 10], and a disc H2.
  • the inner hollow cylinder 102 within which the clamping sleeve I03 clamps the rod 6 provides an electrical connection through the screw 104,
  • the clamping of the clamping sleeve is obtained as a result of the conical shape ofthc ends of the inner ring 102 and the clamping sleeve 103.
  • the clamping pipe 105 is clamped around the tube 2 by means of the brace 106 comprising a clamping pipe assembly.
  • FIG. 3 shows the connection of the supply lines and 111. This FIG. furthermore shows one of the three gaps 107 which divide the clamping sleeve in the resilient lugs.
  • the clamping pipe comprises four gaps 108, which divide the clamping pipe in resilient lugs.
  • the plug 101 is preferably provided with cooling fins 109 as shown in FIG. 4, so that the temperature of the metal insulator connections can be kept below a desirable value by means of a current of air which is also used to cool the anode system.
  • An electron discharge tube comprising a hermetically sealed envelope, a cathode within said envelope, a pair of coaxial conductors for supporting and providing connections for said cathode, said coaxial conductors comprising an inner and outer conductor passing through said envelope and insulating means for vacuum support of said conductors, and a connection arrangement positioned at the external ends of said inner and outer conductors to supply a voltage to said cathode through said coaxial conductors without leakage of microwave radiation, said arrangement comprising a clamping pipe assembly and a plug assembly, said clamping pipe assembly being clamped on said outer conductor and forming an extension for said outer conductor, said plug assembly comprising two coaxial cylinders connected by a disc, said two coaxial cylinders comprising an inner hollow cylinder and an outer cylinder, said inner cylinder being clamped on said inner conductor, and said clamping pipe assembly extending into space between said inner cylinder and said outer cylinder to form a microwave choke.
  • a connection arrangement for supplying voltage to a cathode supported by coaxial conductors extending through a hermetically sealed envelope of an electron discharge tube comprising a clamping pipe assembly externally clamped on an outer conductor of said coaxial conductors and forming an extension for said outer conductor, and a plug assembly comprising an inner hollow cylinder, an outer cylinder coaxial with said inner cylinder and a disc connecting said inner and outer cylinders, said inner cylinder being clamped on said inner cylinder being clamped on said inner conductor, and said clamping pipe assembly extending into space between said inner cylinder and said outer cylinder to form a microwave choke.

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  • Microwave Tubes (AREA)
US848506A 1968-08-17 1969-08-08 Magnetron and connection system for magnetron Expired - Lifetime US3588589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6811762A NL6811762A (ja) 1968-08-17 1968-08-17

Publications (1)

Publication Number Publication Date
US3588589A true US3588589A (en) 1971-06-28

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ID=19804389

Family Applications (1)

Application Number Title Priority Date Filing Date
US848506A Expired - Lifetime US3588589A (en) 1968-08-17 1969-08-08 Magnetron and connection system for magnetron

Country Status (6)

Country Link
US (1) US3588589A (ja)
JP (1) JPS4928788B1 (ja)
DE (1) DE1938694A1 (ja)
FR (1) FR2015852A1 (ja)
GB (1) GB1232159A (ja)
NL (1) NL6811762A (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746916A (en) * 1971-04-26 1973-07-17 Hitachi Ltd Magnetrons
JPS5066547U (ja) * 1973-10-17 1975-06-14
US4300072A (en) * 1979-02-01 1981-11-10 Tokyo Shibaura Denki Kabushiki Kaisha Magnetron having an internal capacitor for suppressing leakage of high frequency
FR2606937A1 (fr) * 1986-05-31 1988-05-20 Nec Corp Ligne a retard a couplage par cavites pour tube a onde progressive
US9011769B2 (en) 2011-07-12 2015-04-21 Sorin Group Italia S.R.L. Dual chamber blood reservoir
US9452250B2 (en) 2009-06-25 2016-09-27 Sorin Group Deutschland Gmbh Device for pumping blood in an extracorporeal circuit
US10458833B2 (en) 2014-05-16 2019-10-29 Sorin Group Italia S.R.L. Blood reservoir with fluid volume measurement based on pressure sensor
US11229729B2 (en) 2009-05-29 2022-01-25 Livanova Deutschland Gmbh Device for establishing the venous inflow to a blood reservoir of an extracorporeal blood circulation system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7700417A (nl) * 1977-01-17 1978-07-19 Philips Nv Trilholtemagnetron voorzien van een antenne- -uitkoppelsysteem.
US4547693A (en) * 1983-05-25 1985-10-15 M/A Com, Inc. Re-entrant cathode support
GB2152274B (en) * 1984-01-04 1987-12-23 England Electric Valve Company Coupling a discharge tube output to a waveguide
GB2228363A (en) * 1988-09-29 1990-08-22 English Electric Valve Co Ltd Magnetrons.
GB2259402B (en) * 1991-09-06 1995-04-26 Burle Technologies Thermally graded filament assembly

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746916A (en) * 1971-04-26 1973-07-17 Hitachi Ltd Magnetrons
JPS5066547U (ja) * 1973-10-17 1975-06-14
US4300072A (en) * 1979-02-01 1981-11-10 Tokyo Shibaura Denki Kabushiki Kaisha Magnetron having an internal capacitor for suppressing leakage of high frequency
FR2606937A1 (fr) * 1986-05-31 1988-05-20 Nec Corp Ligne a retard a couplage par cavites pour tube a onde progressive
US11229729B2 (en) 2009-05-29 2022-01-25 Livanova Deutschland Gmbh Device for establishing the venous inflow to a blood reservoir of an extracorporeal blood circulation system
US11844892B2 (en) 2009-05-29 2023-12-19 Livanova Deutschland Gmbh Device for establishing the venous inflow to a blood reservoir of an extracorporeal blood circulation system
US9452250B2 (en) 2009-06-25 2016-09-27 Sorin Group Deutschland Gmbh Device for pumping blood in an extracorporeal circuit
US9011769B2 (en) 2011-07-12 2015-04-21 Sorin Group Italia S.R.L. Dual chamber blood reservoir
US10213541B2 (en) 2011-07-12 2019-02-26 Sorin Group Italia S.R.L. Dual chamber blood reservoir
US11389580B2 (en) 2011-07-12 2022-07-19 Sorin Group Italia S.R.L. Dual chamber blood reservoir
US10458833B2 (en) 2014-05-16 2019-10-29 Sorin Group Italia S.R.L. Blood reservoir with fluid volume measurement based on pressure sensor

Also Published As

Publication number Publication date
JPS4928788B1 (ja) 1974-07-30
DE1938694A1 (de) 1970-02-19
NL6811762A (ja) 1970-02-19
FR2015852A1 (ja) 1970-04-30
GB1232159A (ja) 1971-05-19

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