FR2195838A1 - - Google Patents

Info

Publication number
FR2195838A1
FR2195838A1 FR7328509A FR7328509A FR2195838A1 FR 2195838 A1 FR2195838 A1 FR 2195838A1 FR 7328509 A FR7328509 A FR 7328509A FR 7328509 A FR7328509 A FR 7328509A FR 2195838 A1 FR2195838 A1 FR 2195838A1
Authority
FR
France
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.)
Granted
Application number
FR7328509A
Other languages
French (fr)
Other versions
FR2195838B1 (de
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates 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
Application filed by Varian Associates Inc filed Critical Varian Associates Inc
Publication of FR2195838A1 publication Critical patent/FR2195838A1/fr
Application granted granted Critical
Publication of FR2195838B1 publication Critical patent/FR2195838B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/18—Tubes with a single discharge path having magnetic control means; having both magnetic and electrostatic control means
    • 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
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing
FR7328509A 1972-08-07 1973-08-03 Expired FR2195838B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27840872A 1972-08-07 1972-08-07

Publications (2)

Publication Number Publication Date
FR2195838A1 true FR2195838A1 (de) 1974-03-08
FR2195838B1 FR2195838B1 (de) 1977-02-25

Family

ID=23064862

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7328509A Expired FR2195838B1 (de) 1972-08-07 1973-08-03

Country Status (7)

Country Link
US (1) US3787747A (de)
JP (1) JPS49124962A (de)
DE (1) DE2338061A1 (de)
FR (1) FR2195838B1 (de)
GB (1) GB1406938A (de)
IL (1) IL42696A (de)
IT (1) IT992766B (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909651A (en) * 1974-08-15 1975-09-30 Us Army Low-cost periodic permanent magnet and electrostatic focusing scheme for electron tubes
US3982152A (en) * 1974-11-25 1976-09-21 Raytheon Company Cascade crossed field device
US3971965A (en) * 1975-03-31 1976-07-27 The United States Of America As Represented By The Secretary Of The Army Internally-focused traveling wave tube
US4107573A (en) * 1977-02-02 1978-08-15 The United States Of America As Represented By The Secretary Of The Army Printed circuit traveling wave tube
US4232249A (en) * 1978-09-28 1980-11-04 Bell Telephone Laboratories, Incorporated Beam-switched traveling wave tube
US4392078A (en) * 1980-12-10 1983-07-05 General Electric Company Electron discharge device with a spatially periodic focused beam
US5227691A (en) * 1989-05-24 1993-07-13 Matsushita Electric Industrial Co., Ltd. Flat tube display apparatus
DE69424880T2 (de) * 1993-01-11 2001-01-18 Real Time Electronics Corp Hochfrequenz-abtastumsetzer
US6700454B2 (en) 2001-06-29 2004-03-02 Zvi Yaniv Integrated RF array using carbon nanotube cathodes
US7037370B2 (en) * 2003-02-06 2006-05-02 Mearini Gerald T Free-standing diamond structures and methods
FR2856189B1 (fr) * 2003-06-10 2007-02-16 Hutchinson Procede de fabrication d'un dispositif de codage magnetique, ainsi que le dispositif ainsi obtenu
WO2005017939A2 (en) * 2003-06-30 2005-02-24 Massachusetts Institute Of Technology Ribbon-beam travelling wave amplifier with a single-sided slow-wave structure
US7193485B2 (en) 2003-08-12 2007-03-20 James A. Dayton, Jr. Method and apparatus for bi-planar backward wave oscillator
WO2008008504A2 (en) * 2006-07-13 2008-01-17 Manhattan Technologies, Llc Apparatus and method for producing electromagnetic oscillations
US20100045160A1 (en) * 2008-08-20 2010-02-25 Manhattan Technologies Ltd. Multibeam doubly convergent electron gun
US8723137B1 (en) * 2012-10-17 2014-05-13 Innosys, Inc Hybrid magnet for vacuum electronic device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102211A (en) * 1959-08-19 1963-08-27 Varian Associates Adiabatic beam condenser method and apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812470A (en) * 1954-10-22 1957-11-05 Bell Telephone Labor Inc Periodic focusing in traveling wave tubes
US2911555A (en) * 1957-09-04 1959-11-03 Hughes Aircraft Co Traveling-wave tube
US3231780A (en) * 1960-10-14 1966-01-25 Sfd Lab Inc Meandering slow wave circuit having high impedance stub support means
US3504222A (en) * 1966-10-07 1970-03-31 Hitachi Ltd Slow-wave circuit including meander line and shielding therefor
US3610999A (en) * 1970-02-05 1971-10-05 Varian Associates Slow wave circuit and method of fabricating same
US3670196A (en) * 1971-02-24 1972-06-13 Raytheon Co Helix delay line for traveling wave devices
US3705327A (en) * 1971-06-02 1972-12-05 Allan W Scott Microwave generator with interleaved focusing and interaction structures

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102211A (en) * 1959-08-19 1963-08-27 Varian Associates Adiabatic beam condenser method and apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
(L'ARTICLE DE V.I.GURTOVOY ET AUTRES "PACKED TWT WITH A TUBE-TYPE FOCUSING SYSTEM" DANS LA PUBLICATION NL : "MO GA, EIGHT INTERNATIONAL CONFERENCE ON MICROWAVES AND OPTICAL GENERATION AND AMPLIFICATION" AMSTERDAM, 7-11 SEPTEMBRE 1970 , PAGES 5-24-5-27) *
REVUE US : "ELECTRONICS", VOLUME 46, NO 10, 10 MAI 73, PAGES 74, 76 L'ARTICLE : "TRRAVELING-WAVE TUBES ADVANCE".) *

Also Published As

Publication number Publication date
DE2338061A1 (de) 1974-02-21
GB1406938A (en) 1975-09-17
FR2195838B1 (de) 1977-02-25
US3787747A (en) 1974-01-22
JPS49124962A (de) 1974-11-29
IL42696A (en) 1976-02-29
IT992766B (it) 1975-09-30
IL42696A0 (en) 1973-10-25

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Legal Events

Date Code Title Description
ST Notification of lapse