EP1095390B1 - Tube electronique multifaisceau avec champ magnetique de correction de trajectoire des faisceaux - Google Patents

Tube electronique multifaisceau avec champ magnetique de correction de trajectoire des faisceaux Download PDF

Info

Publication number
EP1095390B1
EP1095390B1 EP99929381A EP99929381A EP1095390B1 EP 1095390 B1 EP1095390 B1 EP 1095390B1 EP 99929381 A EP99929381 A EP 99929381A EP 99929381 A EP99929381 A EP 99929381A EP 1095390 B1 EP1095390 B1 EP 1095390B1
Authority
EP
European Patent Office
Prior art keywords
tube according
electron tube
beams
input
collector
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
EP99929381A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1095390A1 (fr
Inventor
A. Thomson-CSF Propr. Int. Dept. Brevets BEUNAS
G. Thomson-CSF Propr. Int. Dpt.Brevets FAILLON
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.)
Thales Electron Devices SA
Original Assignee
Thomson Tubes Electroniques
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 Thomson Tubes Electroniques filed Critical Thomson Tubes Electroniques
Publication of EP1095390A1 publication Critical patent/EP1095390A1/fr
Application granted granted Critical
Publication of EP1095390B1 publication Critical patent/EP1095390B1/fr
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
    • H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J25/06—Tubes having only one resonator, without reflection of the electron stream, and in which the modulation produced in the modulator zone is mainly velocity modulation, e.g. Lüdi-Klystron
    • 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
    • H01J23/09—Electric systems for directing or deflecting the discharge along a desired path, e.g. E-type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2225/00—Transit-time tubes, e.g. Klystrons, travelling-wave tubes, magnetrons
    • H01J2225/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J2225/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2225/00—Transit-time tubes, e.g. Klystrons, travelling-wave tubes, magnetrons
    • H01J2225/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J2225/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field

Definitions

  • the present invention relates to electronic tubes with multibeam longitudinal interaction such as for example that klystrons or traveling wave tubes.
  • These tubes usually built around of an axis have several parallel longitudinal electron beams to this axis.
  • These bundles are often produced by an electron gun common, equipped with several cathodes and are collected at the end of the race in one or more collectors.
  • an electron gun common equipped with several cathodes and are collected at the end of the race in one or more collectors.
  • the beams electrons to keep their long and thin shape, are focused by the magnetic field of a focusser centered on the main axis and which surrounds the microwave structure.
  • the advantages of multibeam electron tubes are the following: the current produced is higher and / or the high voltage and the length are lower.
  • the bulk of the tube is generally reduced.
  • the power supply and the modulator used are thus simplified and more compact.
  • Interaction efficiency is better because of the generally weaker perviousness of each of the beams.
  • the bandwidth is enlarged because of the fact that the cavities are loaded with a larger current.
  • one of the main disadvantages is that it is difficult to generate a magnetic field of optimum focus that allows beams to flow through the structure microwave without significant interception by slip tubes.
  • the intercepted current In multibeam klystrons the intercepted current, called current body, is often in the range of 4 to 8% while it does not exceed 2 at 3% in conventional monofabric klystrons even when the beam is strongly modulated at high frequency as is the case high yield klystrons.
  • Too much interception results in not only a prohibitive heating requiring a complex cooling system and expensive but also a malfunction of the tube as it can get produce dilations, degassing, changes of frequency, oscillations, excitation of parasitic modes, reflected electrons, ion bombardment and disturbed interaction between the beam and the microwave structure.
  • each beam creates an azimuthal magnetic field which according to the configuration of the tube and its mode of operation may disrupt the other beams.
  • This azimuth magnetic field is translated, at level of the off-axis beams, by a centrifugal radial force which deflects them.
  • Improvements can also be made at the level of canon so that the magnetic flux lines substantially marry the trajectory of the electrons as soon as they are emitted.
  • the present invention therefore aims to reduce or even cancel this azimuthal magnetic field induces without degrading the characteristics of gain or return.
  • This electron tube multibeam has several electron beams substantially parallel crossing a body. Of these bundles at least some, delimit an inter-beam volume. Each of the beams delimiting the inter-beam volume is subjected to an azimuthal magnetic field disruptive induced by all others.
  • the tube comprises, at the level of the body, means enabling, in at least one conductive element located in the inter-beam volume, a flow of a countercurrent in one direction opposite to that of the current of the beams, this countercurrent generating at level of the beams delimiting the inter-beam volume, a field magnetic correction which opposes the disturbing magnetic field.
  • the conductive element can be integrated into the body or on the contrary electrically isolated from the body.
  • Means allowing the circulation of the countercurrent in the conductive element integrated in the body may comprise a connection of mass, near the entrance of the body, so that the countercurrent comes from the current of the beams which closes by this mass, the collector at an intermediate potential between that of cathodes producing the beams and the mass.
  • this ground connection will be connected to a high voltage power supply that delivers the potential to the cathodes.
  • the body has a succession of cavities and input and output cavities, the beams are contained in tubes of sliding.
  • this conductive block serves as a conductive element in which circulates the countercurrent.
  • the block conductor may have resistance, in a central part encompassing the Interfacing volume, smaller than that owned by a party block device, located around the central part.
  • the central part can be made in a first material and the peripheral part in a second material, the second material having the greatest resistance.
  • a resistive insert may be included in the block conductor and the common wall, this resistive insert forces the countercurrent to circulate in the conductive block loop around the insert and in the wall common on both sides of the insert in opposite directions.
  • Means allowing the circulation of the countercurrent can having a first connection means near the body entrance and a second connection means near the exit of the body, these connecting means being intended to be connected to a feed in front of deliver the countercurrent.
  • the conductive element In the configuration where the conductive element is integrated in the body, the latter and / or the collector must be electrically isolated from various organs with which they are usually in electrical contact.
  • the inter-beam volume is at the level of the sliding tubes and it is possible to house the element conductor substantially parallel to the slip tubes and without electrical contact with the body.
  • This conductive element may comprise a rigid section in input and output of a cavity and a flexible connection that spans a cavity by connecting two rigid sections located on either side of the cavity.
  • FIG. 1a represents, in cross-section, the beams of electrons 1-7 of a multibeam tube. These beams substantially parallels are each contained in a slip tube 13 at the level of the cup. These sliding tubes 13 are dug in the same block conductor 15 which is part of the body 10 of the tube.
  • One of these bundles 1 is centered on a central axis, perpendicular to the sheet, passing to point 0.
  • the other beams 2 to 7, arranged on a circle centered at 0, are off-center. They are conventionally substantially equidistant from each other.
  • At least one off-axis beam 7 of the tube 1a is subjected firstly to its own field b ⁇ 7 which generates a focusing centripetal force not deviant and the resulting field B ⁇ ⁇ b 1, b 2 ⁇ b ⁇ 3 ⁇ b 4, b 5 ⁇ b ⁇ 6 induced by all the other beams 1-6.
  • B ⁇ b ⁇ 1 + b ⁇ 2 + b ⁇ 3 + b ⁇ 4 + b ⁇ 5 + b ⁇ 6
  • This field B ⁇ resulting generates a centrifugal radial force which deflects the beam 7 away from the central axis.
  • the central beam 1 if it exists, for reasons of symmetry it is not deflected.
  • FIG. 2 shows a multibeam tube according to the invention.
  • This tube is a multibeam klystron. It is built around a XX 'axis.
  • the tube has several beams numbered from 1 to 7 arranged as those of Figure 1a to which reference is also made. Among these seven beams, six referenced from 2 to 7 delimit an inter-beam volume 22. In the example, they are placed on a circle of radius a and the inter-beam volume 22 is cylindrical. The last beam 1 is centered on the axis XX ', the others are off-center.
  • the beams 1 to 7 are produced by a gun 17, they then enter a body 10 which they cross and at its exit S are collected in a collector 11.
  • the barrel 17 has seven cathodes 18 which produce the beams 1 to 7 when they are brought to a suitable potential V K delivered by a high voltage power supply A1. It also comprises an anode 16 which accelerates the electrons to the input E of the body 10. It is brought to a potential less negative than that V K of the cathodes. In Figure 2, only three cathodes are visible.
  • the body 10 is formed of an alternation of cavities 20 and tubes
  • the cavities 20 have sidewalls 27.
  • beams 1 to 7 are contained in the slide tubes 13 before enter the first cavity 20, leaving the last cavity 20 and more generally between each cavity 20.
  • the body 10 is placed in a tubular focuser 12.
  • Body 10 begins after a polar piece 19.1 entry and ends before a pole piece 19.2 exit.
  • the multibeam electron tube according to the invention comprises, at level of the body 10, means M allowing, in at least one conductive element 23 located in the inter-beam volume 22, a circulation of a counter-current I 'in the opposite direction of the current I carried by all the beams.
  • the conducting element 23 is integrated in the body 10 of the tube and the means M allowing the flow of the countercurrent I 'comprise a mass connection P, close to the input E of the body 10, so that the countercurrent I 'comes from the current I carried by all the beams which is closed by this mass.
  • the collector 11 is naturally at a potential V C intermediate between that V K cathodes 18 and the mass.
  • the block conductor 15 shown is a cylinder of radius a + g + t with radius of a sliding tube and t thickness of material located between the tubes of slip 13 and the edge of the block 15. This thickness t helps to ensure the tightness inside the body 10.
  • the countercurrent I ' circulates throughout the body 10 in the opposite direction of the current I of the beams 1-7 but only the part that circulates inside the interbeam space 22 make a correction.
  • the ground connection P is located at the level of the anode 16 of the barrel 17. It is conceivable to put it in level of the pole piece 19.1 input. This polar piece of entry 19.1 prevents cathodes 18 from being disturbed by the field Magnetic focus 12.
  • the potential V K of the cathodes 18 is delivered by the supply A1 which is connected between the cathodes 18 and the ground connection P.
  • a waveguide 25.1 input is connected to the first cavity 20 it can inject a signal to amplify.
  • This waveguide 25. is electrically isolated from the body 10 using an insulating flange 24.2.
  • the last cavity 20 communicates with a guide output waveform 25.2, for the transmission of microwave energy produced by the tube to a user organ (not shown).
  • This guide 25.2 is electrically isolated from the body 10 by means of an insulating flange 24.2.
  • a cooling device 26 is provided around the collector 11 and possibly even the body 10. This device cooling 26 will be electrically isolated from the collector 11 and if This insulation can be obtained by realizing the cooling device with dielectric materials, for example at least one plastic conduit 28 in which a fluid of Resistant cooling circulates. As a cooling fluid for water Deionized can be used.
  • the countercurrent I ' is: I ' ⁇ I at 2 (A + g + t) 2 and this countercurrent I 'allows an exact compensation if the values of a, g and t are such that the ratio a 2 / (a + g + t) 2 is equal to 0.5.
  • a way to obtain a countercurrent I optimum at starting from a flow of current throughout the body 10 is to force the current to pass preferentially in the inter-beam volume.
  • Figures 3a, 3b, 4a, 4b show in longitudinal section and cross section a body portion 10 of a multibeam klystron according to the invention in which it promotes the flow of current in the volume interbeam in two different ways.
  • FIG. 3a Two successive cavities 20 are shown diagrammatically in FIG. 3a. They are not shown in Figure 4a for simplicity. Sections transverse of Figures 3b, 4b are made according to the sectional plane aa.
  • the conductive blocks 15 are formed of a central portion 31 surrounded by a peripheral portion 32.
  • the tubes of slip 13 are located in the middle part 31.
  • the volume limit Interbeam 22 corresponds substantially to the circle, dashed in the figure 3b, passing through the center of the sliding tubes 13 and the central portion 31 encompasses inter-beam volume 22.
  • the central portion 31 may for example be made based on copper and the peripheral part made of stainless steel. Other choices are possible. The choice of the material of the peripheral part 32 must be compatible with the desired seal.
  • baffles 33 are illustrated in Figures 4a, 4b. This configuration with baffles can be combined with that described in FIGS. 3a, 3b, as FIGS. show but it's not necessary.
  • the means M allowing the circulation of the countercurrent I ' comprise two connection means C1, C2, one to near the entrance E of the body 10 and the other near its exit S, these connecting means being intended to be connected to the terminals of a supply A2 low voltage to deliver the countercurrent I '.
  • Figure 6 shows this characteristic applied to a tube with multibeam progressive wave. It is of course applicable to klystrons multibeam.
  • the inter-beam volume 22 is not full of conductive material.
  • Figures 5a, 5b show in longitudinal sections and partial transverse, a multibeam klystron body with this feature.
  • the conductive element 23 in which circulates the countercurrent I ' is electrically insulated and distinct from the body 10. It extends into the inter-beam volume 22, parallel to the slide tubes 13, without electrical contact with them or with the cavities 20. It may be formed of rigid conductor sections 34 located at the entrance and exit of the cavities, these sections that can be rigid conductive rods sheathed with insulation 37 such only alumina.
  • the flexible connections 35 may be of the metal braid wrapped with insulation.
  • M means for the circulation of the countercurrent I ' comprise at both ends of the conductive element 23 means connection C1, C2 intended to be connected to a power supply A2 in front of deliver the countercurrent I '.
  • the tube does not have a central beam as shown in 5c, a single conductive element 23 is sufficient in the center, if the tube comprises a central beam as shown in Figure 5b, several are desirable, arranged between the central beam 1 and the beams 2-7 delimiting the volume Interbeam 22.
  • the harmful magnetic field induced at one of the beams by the others does not appear in the tube that when it operates in regime continuous or with relatively long pulse durations. It's the case of many tubes used in telecommunications applications, industrial, scientific, and even radar applications.
  • ⁇ 1.72 10 -6 ⁇ . cm and ⁇ r is 1.
  • the repetition frequency F is 17 Hz maximum, which means that pulses can not last only 30 to 40 ms without defocusing effect.
  • a tube multibeam according to the invention could also be wave tube type progressive as shown in Figure 6.
  • the body 10 is formed of a succession of cavities 30 coupled to each other by irises 21 placed on a wall
  • the bundles 1 to 7 are contained in test tubes slip 13 before entering the first cavity 30, leaving the last cavity 30 and more generally between the cavities 30.
  • the slip tubes 13 occupy less than 50% of the body length 10, which means that the correction obtained is less effective but still interesting.
  • Conductive blocks in which are hollowed out the sliding tubes 13 bear the reference 15 and the common walls 36 are integral with the conductive blocks 15.
  • inserts 200 are shown in Figure 6 in two parts 201. 202 integral with each other.
  • the first part 201 placed in the conductive blocks 15 has the shape of a tubular element, it surrounds the sliding tubes 13.
  • the second part 202 extends from the first part 201 in the thickness of the common wall 36 as a flange.
  • an insert 200 has the shape of a T whose leg is the second part 202 and whose cross bar is the first part 201.
  • the circulation of the countercurrent I 'which circumvents the insert 200 is seen in detail on the circled zoom of FIG.
  • inserts 200 may be made, for example of steel stainless, alumina or even be recesses.
  • the means M allowing the circulation of the countercurrent I ' include two connection means C1, C2 one nearby the input E of the body 10 and the other C2 near the exit S of the body, these connection means C1, C2 being intended to be connected to the terminals e1, e2 of a low voltage supply A2 to deliver the countercurrent I '.
  • the first connection means C1 is at level of the pole piece 19.1 input and second connection means C2 is at the level of the collector base 11.
  • the first means of C1 connection could be on the anode 16 and the second on the polar piece of exit.
  • the second connection means C2 is brought to the mass but other potentials would be conceivable.
  • a resistance R appropriately chosen in series with the low voltage supply A2 makes it possible to adjust the value of the countercurrent.
  • FIG. 6 in a conventional manner, another feed A1 is represented. It is connected between the cathodes 18 and the collector 11 and is used to create beams 1 to 7. It is a high voltage power supply.
  • the multibeam tubes according to the invention do not have a structure modified compared to existing tubes, it is sufficient to provide the connections described.

Landscapes

  • Particle Accelerators (AREA)
  • Microwave Tubes (AREA)
EP99929381A 1998-07-03 1999-07-02 Tube electronique multifaisceau avec champ magnetique de correction de trajectoire des faisceaux Expired - Lifetime EP1095390B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9808552A FR2780809B1 (fr) 1998-07-03 1998-07-03 Tube electronique multifaisceau avec champ magnetique de correction de trajectoire des faisceaux
FR9808552 1998-07-03
PCT/FR1999/001595 WO2000002226A1 (fr) 1998-07-03 1999-07-02 Tube electronique multifaisceau avec champ magnetique de correction de trajectoire des faisceaux

Publications (2)

Publication Number Publication Date
EP1095390A1 EP1095390A1 (fr) 2001-05-02
EP1095390B1 true EP1095390B1 (fr) 2005-05-04

Family

ID=9528244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99929381A Expired - Lifetime EP1095390B1 (fr) 1998-07-03 1999-07-02 Tube electronique multifaisceau avec champ magnetique de correction de trajectoire des faisceaux

Country Status (8)

Country Link
US (1) US6486605B1 (zh)
EP (1) EP1095390B1 (zh)
JP (1) JP4405674B2 (zh)
KR (1) KR100593845B1 (zh)
CN (1) CN1308769A (zh)
DE (1) DE69925125D1 (zh)
FR (1) FR2780809B1 (zh)
WO (1) WO2000002226A1 (zh)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2803454B1 (fr) * 1999-12-30 2003-05-16 Thomson Tubes Electroniques Generateur d'impulsions hyperfrequences integrant un compresseur d'impulsions
FR2830371B1 (fr) * 2001-09-28 2005-08-26 Thales Sa Generateur d'ondes hyperfrequences a cathode virtuelle
GB2397691B (en) * 2003-01-24 2005-08-10 Leica Microsys Lithography Ltd Cooling of a device for influencing an electron beam
CN1297179C (zh) * 2004-02-18 2007-01-24 谢家麟 速调管同时做为微波源和电子源的高效加速器
US7404883B2 (en) * 2004-04-12 2008-07-29 Robert Bosch Gmbh Insulation bushing assembly for an exhaust gas sensor
JP4653649B2 (ja) * 2005-11-30 2011-03-16 株式会社東芝 マルチビームクライストロン装置
JP2007234344A (ja) * 2006-02-28 2007-09-13 Toshiba Corp マイクロ波管
JP4991266B2 (ja) * 2006-12-11 2012-08-01 株式会社東芝 マルチビームクライストロン
WO2008109064A1 (en) * 2007-03-01 2008-09-12 Communications Power Industries, Inc. Terahertz sheet beam klystron
US8547006B1 (en) 2010-02-12 2013-10-01 Calabazas Creek Research, Inc. Electron gun for a multiple beam klystron with magnetic compression of the electron beams
CN102254771B (zh) * 2011-03-10 2013-04-24 安徽华东光电技术研究所 一种耦合腔多注行波管慢波系统
JP5959320B2 (ja) * 2012-05-31 2016-08-02 日本電子株式会社 荷電粒子ビームの軸合わせ方法および荷電粒子ビーム装置
US9013104B1 (en) * 2013-04-22 2015-04-21 Calabazas Creek Research, Inc. Periodic permanent magnet focused klystron
CN104124124B (zh) * 2014-08-06 2016-08-24 中国科学院电子学研究所 线包磁聚焦强流电子注传输过程模拟测量系统
CN105489460B (zh) * 2015-12-16 2017-07-11 中国工程物理研究院应用电子学研究所 一种k波段同轴相对论返波振荡器
CN108400075A (zh) * 2018-01-22 2018-08-14 电子科技大学 平行多束电子枪
JP7070980B2 (ja) * 2018-04-12 2022-05-18 キヤノン電子管デバイス株式会社 クライストロン
CN112578426B (zh) * 2020-11-26 2022-09-20 中国工程物理研究院应用电子学研究所 一种可调节型阵列式法拉第筒
CN117545157B (zh) * 2024-01-09 2024-03-12 西南交通大学 一种用于测量等离子体电势和电场的诊断方法及系统

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2153585A5 (zh) 1971-09-16 1973-05-04 Thomson Csf
FR2191253B1 (zh) 1972-06-27 1978-03-03 Thomson Csf
FR2363185A1 (fr) 1976-08-27 1978-03-24 Thomson Csf Dispositif de couplage pour tube hyperfrequence et tube hyperfrequence comportant un tel dispositif
FR2430104A1 (fr) 1978-06-29 1980-01-25 Thomson Csf Dispositif de selection de la frequence de resonance de cavites hyperfrequences, klystrons et filtres de frequences comportant un tel dispositif
US4513223A (en) * 1982-06-21 1985-04-23 Varian Associates, Inc. Electron tube with transverse cyclotron interaction
FR2545646B1 (fr) 1983-05-03 1985-12-27 Thomson Csf Klystron amplificateur de puissance apte a alimenter une charge variable
FR2596199B1 (fr) 1986-03-19 1994-03-18 Thomson Csf Circuit de sortie pour klystron et klystron comportant un tel circuit de sortie
FR2599554A1 (fr) 1986-05-30 1987-12-04 Thomson Csf Klystron a faisceaux multiples fonctionnant au mode tm02
FR2599565B1 (fr) 1986-05-30 1989-01-13 Thomson Csf Lasertron a faisceaux multiples.
FR2625836B1 (fr) 1988-01-13 1996-01-26 Thomson Csf Collecteur d'electrons pour tube electronique
FR2637122A1 (fr) * 1988-09-23 1990-03-30 Thomson Csf Dispositif correcteur de trajectoires pour tube electronique
FR2641899A1 (fr) 1989-01-17 1990-07-20 Thomson Tubes Electroniques Canon a electrons muni d'un dispositif actif produisant un champ magnetique au voisinage de la cathode
FR2643507A1 (fr) 1989-02-21 1990-08-24 Thomson Tubes Electroniques Canon a electrons a faisceau electronique module par un dispositif optique
FR2666169B1 (fr) 1990-08-24 1992-10-16 Thomson Tubes Electroniques Klystron a bande passante instantanee elargie.
RU2081474C1 (ru) * 1991-07-09 1997-06-10 Гаврилов Олег Юрьевич Многолучевой свч прибор о-типа
FR2708149B1 (fr) 1993-07-23 1995-09-01 Thomson Tubes Electroniques Procédé de fabrication d'une ligne à hélice et ailettes couplées, ligne obtenue par le procédé et tube électronique comportant une telle ligne.
FR2737340B1 (fr) 1995-07-28 1997-08-22 Thomson Tubes Electroniques Tube electronique multifaisceau a couplage cavite/faisceau ameliore
FR2756970B1 (fr) 1996-12-10 2003-03-07 Thomson Tubes Electroniques Tube hyperfrequence a interaction longitudinale a cavite a sortie au dela du collecteur
FR2764730B1 (fr) 1997-06-13 1999-09-17 Thomson Tubes Electroniques Canon electronique pour tube electronique multifaisceau et tube electronique multifaisceau equipe de ce canon

Also Published As

Publication number Publication date
FR2780809A1 (fr) 2000-01-07
JP4405674B2 (ja) 2010-01-27
FR2780809B1 (fr) 2003-11-07
EP1095390A1 (fr) 2001-05-02
JP2002520772A (ja) 2002-07-09
US6486605B1 (en) 2002-11-26
CN1308769A (zh) 2001-08-15
DE69925125D1 (de) 2005-06-09
KR100593845B1 (ko) 2006-06-28
WO2000002226A1 (fr) 2000-01-13
KR20010085278A (ko) 2001-09-07

Similar Documents

Publication Publication Date Title
EP1095390B1 (fr) Tube electronique multifaisceau avec champ magnetique de correction de trajectoire des faisceaux
FR2691602A1 (fr) Accélérateur linéaire de protons à focalisation améliorée et impédance shunt élevée.
EP0248689A1 (fr) Klystron à faisceaux multiples
FR2527005A1 (fr) Tube electronique de puissance a grille perfectionne
EP0197843B1 (fr) Dispositif pour l'excitation par ondes hyperfréquences d'un plasma dans une colonne de gaz, permettant notamment la réalisation d'un laser ionique
EP0239466B1 (fr) Circuit de sortie pour klystron, et klystron comportant un tel circuit de sortie
EP0995345B1 (fr) Dispositif d'excitation d'un gaz par plasma d'onde de surface
EP0038249B1 (fr) Collecteur déprimé à plusieurs étages pour tube hyperfréquence
EP0379403A1 (fr) Canon à électrons muni d'un dispositif produisant un champ magnétique au voisinage de la cathode
FR2709598A1 (fr) Construction de magnétron utilisable en particulier en tant que magnétron relativiste.
EP0499514B1 (fr) Dispositif convertisseur de modes et diviseur de puissance pour tube hyperfréquence, et tube hyperfréquence comprenant un tel dispositif
EP0407558B1 (fr) Dispositif amplificateur ou oscillateur fonctionnant en hyperfrequence
FR2644286A1 (fr) Generateur de faisceau d'electrons et dispositifs electroniques utilisant un tel generateur
EP0336850A1 (fr) Accélérateur linéaire muni de cavités autofocalisantes à fort taux de capture électronique pour des tensions d'injection modérées
EP1466343B1 (fr) Tube electronique a collecteur simplifie
EP1680799B1 (fr) Tube hyperfrequence a faible rayonnement parasite
EP0341107B1 (fr) Tube à onde progressive comportant un dispositif de couplage entre sa ligne à retard et des circuits hyperfréquences externes
EP0124396A1 (fr) Dispositif d'injection d'un faisceau d'électrons pour générateur d'ondes radioélectriques pour hyperfréquences
FR2790595A1 (fr) Circuit de ligne a retard en helice
EP0122186B1 (fr) Générateur d'ondes radioélectriques pour hyperfréquences
WO2000030144A1 (fr) Tube electronique multifaisceau a interception des electrons minimisee
EP0482986A1 (fr) Collecteur pour tube hyperfréquence et tube hyperfréquence comportant un tel collecteur
FR2476908A1 (fr) Tube a ondes progressives pour tres hautes frequences et dispositif amplificateur utilisant un tel tube
FR2749703A1 (fr) Dispositif pour engendrer un champ magnetique et source ecr comportant ce dispositif
FR2790594A1 (fr) Canon a electrons possedant une cathode froide a emission de champ et tube micro-ondes utilisant ce canon a electrons

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20001208

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050504

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REF Corresponds to:

Ref document number: 69925125

Country of ref document: DE

Date of ref document: 20050609

Kind code of ref document: P

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050630

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050805

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20051213

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060207

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100630

Year of fee payment: 12

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110702

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20180628

Year of fee payment: 20