EP2202774B1 - Angepasster Übergang eines RF-Ausgangs für leistungsfähige elektronische Hyperfrequenzröhre - Google Patents

Angepasster Übergang eines RF-Ausgangs für leistungsfähige elektronische Hyperfrequenzröhre Download PDF

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EP2202774B1
EP2202774B1 EP09178423.1A EP09178423A EP2202774B1 EP 2202774 B1 EP2202774 B1 EP 2202774B1 EP 09178423 A EP09178423 A EP 09178423A EP 2202774 B1 EP2202774 B1 EP 2202774B1
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Prior art keywords
transition
curvature
radius
rectangular
section
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French (fr)
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EP2202774A1 (de
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Rodolphe Marchesin
David Bariou
Jean- Luc Piquet
Serge Agogue
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Thales SA
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Thales SA
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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
    • H01J23/12—Vessels; Containers
    • 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
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy

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  • the present invention relates to a transition between a radiofrequency output of a power microwave tube and a waveguide.
  • Power frequency electron tubes such as klystrons operating in L-band, or in a frequency band of 1000 to 2000 MHz, comprise at least one power RF output intended to be connected to a waveguide for transmitting the signal.
  • the connection between the output cavity of the klystron and the waveguide is via a microwave window transparent to electromagnetic waves.
  • the microwave window isolates the inside of the vacuum tube from the outside possibly under gas pressure.
  • a transition after the microwave window is required to connect the output of the circular cylindrical window to the rectangular section guide.
  • Conventional klystrons are amplifiers essentially comprising a microwave structure for amplifying a microwave applied to an RF input of the tube.
  • the amplification is carried out by transforming the kinetic energy of one or more electron beams passing through said structure into electromagnetic energy.
  • the klystron further comprises at least one power wave RF output 58 in the form of a waveguide connected to an output transition 60 for extracting the amplified RF power to the outside of the tube.
  • the output transition 60 comprises a ceramic window 61 sealing between the inside of the vacuum tube and a waveguide of the use (not shown in FIG. figure 1 ) under gas pressure and the connection using a flange 64 to the waveguide.
  • the waveguide used is, for example in L-band, a waveguide WR650 of rectangular section.
  • the figure 2 shows a partial view (view BB) of an exit transition from the state of the art of the klystron of the figure 1 .
  • the output transition 60 has on the output side of the klystron via a separation window (not shown in FIG. figure 2 ), a cylindrical portion 66 of circular section connected to the output of the klystron and, on the opposite side, another portion 68 in the form of rectangular section tube having the flange 64 for connection to the waveguide of use. Inside the transition, the connection between the surface cylindrical and those planes of the rectangular section is effected by a connection 70 of radius r.
  • the microwave output circuit is subjected to intense electric fields by the passage of the RF power output of the power klystron and in particular in the output transition 60. If the value of the electric field generated by the RF power wave in the output transition produced between certain points of the transition (or electrodes) a voltage greater than the value of the breakdown voltage of said transition then an electric arc occurs which can lead to a degradation of the klystron.
  • the output of the klystron includes arcs detectors but as fast as these detectors are triggered only at the moment when the breakdown occurs, which nevertheless limits the evolution of the arc in time.
  • the breakdown resistance of the klystron power output circuit depends on various parameters such as, the standing wave ratio in the output circuit, the harmonics of the RF signal, the temperature of the transition and the waveguide as well as the influence of other elements present in the output circuit such as measuring components or connections, but also the particles in suspension in the gas of the pressurized circuit which reduce the resistance to arcing.
  • the electric field in the output circuit corresponding to this limit is what is called the electric rigidity of the gas. This electrical rigidity depends on the product of the gas pressure by the distance between the parts of the output circuit capable of causing the arc (equivalent to electrodes) as well as the material of these parts of the circuit.
  • the arcs occur in particular in the transition connecting the tube outlet and the waveguide inside the transition, at the connection 70 between the cylindrical portion 66 and the rectangular portion 68 of the transition.
  • a weak point of this type of transition from the state of the art represented in figure 2 is to present a zone with a locally reinforced electric field because of the geometry of this zone, the electric field being able to locally exceed the breakdown threshold.
  • the Electromagnetic field in the transition reaches a maximum level at the connection 70 in a central part of this connection.
  • the arcing resistance of this type of transition of the state of the art is limited because of a small radius r of connection, for example, of the order of 2 to 3mm in L-band, between the inner surface of the cylindrical portion 66 and that of the rectangular portion 68.
  • the threshold of breakdown in a closed volume and traversed by an electromagnetic wave depends on the composition of the gas used but also on the pressure.
  • a maximum electric field value of the order of 1 kV / mm is usual in the RF power circuit.
  • the electric field in the transition may locally be twice the electric field in the waveguide.
  • the transition becomes the element of the microwave circuit which limits the transmissible RF power due to the risk of breakdown.
  • a solution consists in using a gas such as sulfur hexafluoride, or SF 6 , under pressure in the transition and in the waveguide. 'use.
  • the microwave transition 60 and the use waveguide must be pressurized with SF 6 gas or equivalent. Pressurization with this type of SF 6 gas allows for a much higher peak power transmission at the outlet of the klystron than pressurization with air or nitrogen.
  • SF 6 gas for pressurization has drawbacks. Indeed SF 6 is a greenhouse gas, the maintenance of the output circuit, either to pressurize or to depressurize, requires precautions to prevent a portion of the gas escapes into the atmosphere.
  • SF 6 gas although not harmful to the personnel when it is pure, can become harmful during its replacement after use in the output circuit.
  • repetitive breakdowns in the RF output circuit produce, by the decomposition of the initially pure SF 6 gas, other harmful gases.
  • Microwave transitions of the state of the art are known documents EP-A-1933412 , GB-A-2280541 and CA-A-823 797 .
  • the invention proposes a microwave output transion for an electronic power tube according to claim 1.
  • the two curved connecting surfaces, flat internal propagation surfaces parallel to the long sides, and the conical internal propagation surface are symmetrical on either side of the axis ZZ '.
  • a vertical radius of curvature Rvc in a plane passing through the axis ZZ 'of the body is of greater length than a first Rv1 or last Rvp vertical radius of curvature in its respective plane perpendicular to the long sides of the rectangular end passing through the flat internal surfaces of the small ribs of the section rectangular, these first and last radius of vertical curvature of equal values being the smallest of the vertical radius of curvature of the two internal surfaces of connection with the inner surfaces parallel to the long sides of the rectangular end.
  • the body of the transition has a central portion between the tube-shaped end of rectangular section and the circular cylindrical tube-shaped end, said central portion having external surfaces in contact with the ambient environment, on the one hand, two plane external surfaces of connection in respective inclined planes symmetrical with respect to a plane passing through the axis ZZ 'parallel to the long sides of the rectangular end of the body and, on the other hand, two other external surfaces symmetrical connection planes on either side of another plane passing through the axis ZZ ', parallel to the short sides of the rectangular end of the transition.
  • the transition comprises a connecting flange integral with the rectangular end of the body and a circular cylindrical separation window integral with the circular end of said body.
  • the invention also relates to an electron tube chosen from Klystrons, TOP, or other microwave power tube, characterized in that it comprises an RF output transition according to the invention.
  • a main transition objective, according to the invention, is to make it possible to use, in the power RF output circuit of a tube, a pressurization gas without greenhouse effect and without harmfulness for maintenance personnel. , such as air or nitrogen, while obtaining sufficient breakdown resistance in the transition.
  • a second objective is to reduce the breakdown rate for a given power output and for a pressurizing gas.
  • FIGS. 3a and 3b show two wired views in perspective of the body of a transition according to the invention.
  • the transition according to the invention comprises a body 78 of tubular shape, along a longitudinal axis ZZ ', having two ends, a passage 79 between the two ends.
  • One of the ends 80 is in the form of a tube of rectangular section having two long sides 84, 85 parallel and two small sides 86, 87 perpendicular to the long sides, the other end 90 is in the shape of a circular tube.
  • the end 80 of rectangular section is intended to receive a connection flange (not shown in the figure) to a waveguide of use, same rectangular section, the circular extremist 90 being intended to be connected to the output RF of electronic tube.
  • the body of the transition further comprises a central portion 94 between the rectangular tubular end 80 and the circular tubular end 90.
  • the body of the transition has external surfaces in contact with the ambient medium and, in the passageway 79, internal propagation surfaces of the electromagnetic waves at the RF output of the tube towards the waveguide.
  • the external surfaces of the body of the transition comprise, at the level of the central portion 94 of the body, on the one hand, two plane external surfaces 100, 102 of connection to the ends of the body, in respective planes Ph, Pb, inclined symmetrically by relative to a plane P1 passing through the axis ZZ 'parallel to the long sides 84, 85 of the rectangular end 80 of the body 78 and, secondly, two other flat outer surfaces 104, 106 of connection to said ends of the body, symmetrical sides of another plane P2 passing through the axis ZZ ', parallel to the short sides 86, 87 of the rectangular end of the transition.
  • the shape of the two plane external surfaces 100, 102 of symmetrical inclined connection results from the intersection of the inclined planes Ph, Pb passing through these surfaces and the circular cylindrical end 90 of the body.
  • connection between the rectangular end 80 of the body and the central portion 94 comprise a recess 110 in a plane perpendicular to the axis ZZ 'forming a stop for positioning a connection flange (not shown in the figures) with a waveguide
  • the internal volume of the passage 79 delimited by the internal surfaces of the body 78 determines the propagation of the electromagnetic waves in the transition.
  • These internal surfaces comprise, on the side of the rectangular end of the body, two inner plane surfaces 120, 122 parallel to the long sides 84, 85 of the guide and two other internal plane surfaces 124, 126 parallel to the short sides 86, 87 and, of side of the circular cylindrical end 90 a conical inner surface 130 of propagation.
  • the conical inner surface 130 has two intersecting edges 140, 142 with the flat inner surfaces 124, 126 parallel to the short sides 86, 87 of the rectangular end 80 of the body.
  • Each of the two planar internal surfaces 120, 122 parallel to the long sides 84, 85 of the rectangular end of the body is connected to the conical inner surface 130 of the circular cylindrical end 90 by a curved surface 132, 133 respectively symmetrical on the other hand.
  • axis ZZ ' having, according to a main characteristic of the invention, bidirectional radii of curvature of variable lengths.
  • the figure 4a represents a front view of the circular cylindrical portion 90 of the body of the transition of the Figures 3a and 3b showing curved connecting surfaces 132, 133 as horizontal level curves h1, h2, hi, ... hn of said curved surface, i being an integer from 1 to n, where n is the number of contours horizontal, and the figure 4b an axial sectional view of the body of the transition of the Figures 3a and 3b .
  • the figure 4b shows a sectional view along AA (see figure 4a ) in a plane P3 perpendicular to the long sides 84, 85 of the rectangular end of the transition body passing through the longitudinal axis ZZ '.
  • each of the horizontal level curves h1, h2, hi, ... hn of the edges of the connecting surfaces 132, 133 is part of a curve portion having a respective horizontal radius of curvature Rh1, Rh2, ... Rhi, ... Rhn, each of said horizontal radii of curvature rotating around a respective axis of rotation parallel to the short sides 86, 87 of the rectangular end 80 of the body.
  • the radii of horizontal curvature are of variable length and of variable center of rotation in planes perpendicular to the small ribs 86, 87 of the rectangular section of the body as a function of the horizontal level curve h1, h2, hi, ... hn considered .
  • a first horizontal radius of curvature Rh1 will have a finite length determining the horizontal level h1, intersection between the conical inner surface 130 and the curved surface 132, 134 respectively.
  • the last radius of horizontal curvature Rhn will be of infinite length determining the last horizontal level hn, intersection between the curved surface 132, 133 and this time a planar inner surface 120, 122 respectively of the long sides of the rectangular section of the body.
  • the set of intermediate radii of horizontal curvature Rh1, Rh2, ... Rhi, ... Rhn, among which the horizontal radius of curvature Rhi intermediate of rank i, determine the shape of the curved surface 132, 133.
  • the figure 4b shows vertical contour lines v1, v2, .. vx, ... vp of the internal curved surface in a respective section plane Pv1, Pv2, .. Pvx, ... Pvp perpendicular to the long sides 84, 85 of the ends rectangular 80 of the body, x being an integer between 1 and p number of vertical contour lines.
  • each of the vertical level curves v1, v2,... vx,... vp of the edges of the internal connection surface is part of a portion of curve having a respective vertical radius of curvature Rv1, Rv2 .., Rvx, ... Rvc, ... Rvp, each of said vertical curvature radii rotating around a respective axis of rotation parallel to the long sides 84, 85 of the rectangular end 80 of the body.
  • the vertical radii of curvature are of variable lengths and of varying centers of rotation in the planes Pv1, Pv2,... Pvx,... Pvp parallel to the small ribs of the rectangular section of the body as a function of the vertical level curve v1, v2, .. vx, ... vp considered.
  • the vertical radius of curvature Rvc in the plane P3 passing through the axis ZZ 'of the body is of greater length than a first Rv1 or last Rvp vertical radius of curvature in their respective plane perpendicular to the long sides of the end passing through the inner surfaces 124, 126 of the small ribs of the rectangular section.
  • These first Rv1 and last Rvp radii of vertical curvature, of equal values, are the smallest of the vertical radii of curvature of the two internal connecting surfaces 132, 133 with the internal surfaces 120, 122 parallel to the long sides 84, 85 of the rectangular end of the body.
  • the distance between two symmetrical points of the curved connecting surfaces, in planes perpendicular to the long sides 84, 85 of the rectangular section, increases progressively when passing from the rectangular section to the circular end. .
  • the shape of the internal surfaces of the body of the transition makes it possible to obtain curvatures, especially in the central part of the transition, which are much greater than in the transitions of the state of the art. This characteristic results in a significant drop in the electric field for the same RF power transmitted at the internal connection surfaces of the transition.
  • the breakdown resistance of the transition is considerably improved.
  • the pressurization gas in the waveguide and in the transition can be a greenhouse gas and harmless for the maintenance personnel, such as the air or nitrogen, while obtaining sufficient resistance to breakdown in the transition.
  • the electric field at the flat internal surfaces 120, 122, 124, 126 of the rectangular section portion will be of the order of 0.88KV / mm.
  • the electric field at the connection surfaces 130, 132 will be of the order 0.94 KV / mm. This is a level of electric field much lower than that (1.8 KV / mm) appearing at the connection 70 of the transition of the state of the art shown in FIG. figure 2.
  • the specific profile with bidirectional variable radii of the transition according to the invention thus makes it possible to sufficiently reduce the electric fields generated by the passage of microwave power in the form of a wave in this circuit (transition + waveguide WR650) for n '. have to use only air or nitrogen inside it.
  • the transition is also adapted to the passage of electromagnetic waves resulting in an optimized reflection coefficient.
  • the figure 5 shows a variant of a transition, according to the invention, comprising the body 78 of the integral transition of a flange 150 for connection to a waveguide of use (not shown in the figure).
  • the flange 150 of the same rectangular section as the waveguide, is sealed with respect to the rectangular end 80 of the body 78 of the transition.
  • the figure 6 shows another variant of the transition according to the invention comprising a connection flange to a use waveguide and a circular cylindrical separation window.
  • the figure 6 shows another variant of the transition according to the invention comprising the connection flange 150 as shown in FIG. figure 5 integral with the rectangular end 80 of the body 78 and a cylindrical circular partition window 160.
  • the separation window 160 is coaxial, of the same diameter and sealingly attached to the circular portion 90 of the body 78.
  • the separation window 160 comprises a coaxial separation washer 162 made of electromagnetic transparent ceramic separating two different physical media, on one side the vacuum of the electron tube, on the other the gas under pressure in the waveguide.
  • the flange 150 and the separation window 160 may be made integral with the body 78 for example by a brewing operation.
  • the figure 7 shows the klystron of the figure 1 transition, according to the invention, according to the variant of the figure 6 .
  • the power RF output of the tube is connected to the window 160 of the transition according to the invention in a sealed manner.
  • the use waveguide also comprises a connection flange (not shown in the figure) making it also integral and sealing the transition on the side of its rectangular end via the flange 150 of the transition.

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  • Microwave Tubes (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Waveguides (AREA)

Claims (5)

  1. Übergang mit Ultrahochfrequenzausgang für eine elektronische Leistungsröhre des Klystron-Typs zum Verstärken einer Ultrahochfrequenzwelle, die an einen RF-Eingang der Röhre angelegt wird, umfassend einen röhrenförmigen Körper (78) entlang einer Längsachse ZZ' mit zwei Enden (80, 90), einem Kanal (79) zwischen den beiden Enden mit Innenflächen (120, 122, 124, 126, 130, 132, 133) für die Ausbreitung der elektromagnetischen Wellen, wobei eines der Enden (90), das die Form einer kreisförmigen zylindrischen Röhre hat, eine konische Ausbreitungsinnenfläche (130) aufweist, und das andere Ende (80), das die Form einer Röhre mit rechteckigem Querschnitt hat, zwei lange Seiten (84, 85) und zwei kurze Seiten (86, 87) lotrecht zu den langen Seiten aufweist, wobei der Kanal zwei flache Ausbreitungsinnenflächen (120, 122) parallel zu den langen Seiten (84, 85) und zwei weitere flache Innenflächen (124, 126) parallel zu den kurzen Seiten (86, 87) aufweist,
    dadurch gekennzeichnet, dass jede der flachen Ausbreitungsinnenflächen (120, 122) parallel zu den langen Seiten (84, 85) mit der konischen Ausbreitungsinnenfläche (130) durch eine jeweilige gekrümmte Verbindungsfläche (132, 133) in Form von horizontal verlaufenden Kurven (h1, h2, hi, ...hn) und von vertikal verlaufenden Kurven (v1, v2, ..vx, ...vp) in einer jeweiligen Schnittebene (Pv1, Pv2, ..Pvx, ...Pvp) lotrecht zu den langen Seiten (84, 85) der rechteckigen Enden (80) verbunden ist,
    wobei jede der horizontal verlaufenden Kurven (h1, h2, hi, ...hn) der Ränder der Verbindungsflächen (132, 133) in einem Kurvenabschnitt mit einem jeweiligen horizontalen Krümmungsradius (Rh1, Rh2,...Rhi,...Rhn) enthalten ist, der um eine jeweilige Drehachse parallel zu den kurzen Seiten (86, 87) des rechteckigen Endes (80) des Körpers dreht, wobei die horizontalen Krümmungsradien eine variable Länge und einen Drehpunkt haben, der in den Ebenen lotrecht zu den kurzen Seiten (86, 87) des rechteckigen Abschnitts des Körpers in Abhängigkeit von der betrachteten horizontal verlaufenden Kurve (h1, h2, hi, ...hn) variabel ist, wobei ein erster horizontaler Krümmungsradius (Rh1) von finiter Länge den horizontalen Verlauf (h1) am Schnittpunkt zwischen der konischen Innenfläche (130) und der jeweiligen gekrümmten Fläche (132, 134) bestimmt, wobei ein letzter horizontaler Krümmungsradius (Rhn) von infiniter Länge den letzten horizontalen Verlauf (hn) am Schnittpunkt zwischen der gekrümmten Fläche (132, 133) und der jeweiligen flachen Innenfläche (120, 122) der langen Seiten des rechteckigen Querschnitts des Körpers bestimmt, wobei alle horizontalen Zwischenkrümmungsradien (Rh1, Rh2,...Rhi) zwischen der finiten Länge des ersten horizontalen Krümmungsradius (Rh1) und der infiniten Länge des letzten horizontalen Krümmungsradius (Rhn) variieren,
    wobei jede der vertikal verlaufenden Kurven (v1, v2, ..vx, ...vp) der Ränder der inneren Verbindungsflächen in einem Kurvenabschnitt mit einem jeweiligen vertikalen Krümmungsradius (Rv1, Rv2, ..Rvx, ...Rvc,...Rvp) enthalten ist, der um eine jeweilige Drehachse parallel zu den langen Seiten (84, 85) des rechteckigen Endes (80) des Körpers dreht,
    wobei die vertikalen Krümmungsradien variable Längen und variable Drehpunkte in den Schnittebenen (Pv1, Pv2, ..Pvx, ...Pvp) parallel zu den kurzen Seiten des rechteckigen Querschnitts des Körpers in Abhängigkeit von der betrachteten vertikal verlaufenden Kurve (v1, v2, ..vx, ...vp) haben,
    wobei der vertikale Krümmungsradius (Rvc) in der durch die Längsachse ZZ' des Körpers (78) passierenden Schnittebene (P3) länger ist als ein erster vertikaler Krümmungsradius (Rv1) oder ein letzter vertikaler Krümmungsradius (Rvp) in ihrer jeweiligen Ebene lotrecht zu den langen Seiten des Endes, das durch die Innenflächen (124, 126) der kurzen Seiten des rechteckigen Querschnitts verläuft, wobei der erste (Rv1) und der letzte (Rvp) Krümmungsradius den gleichen Wert haben,
    wobei alle vertikalen Zwischenkrümmungsradien (Rv1, Rv2, ..Rvx, ...Rvc) zwischen der Länge des ersten vertikalen Krümmungsradius (Rv1) und der Länge des vertikalen Krümmungsradius (Rvc) in der durch die Längsachse ZZ' des Körpers (78) passierenden Ebene (P3) variieren, wobei der Abstand zwischen zwei symmetrischen Punkten auf beiden Seiten der Längsachse ZZ' der gekrümmten Verbindungsflächen in den Ebenen (Pv1, Pv2, ..Pvx, ...Pvp) lotrecht zu den langen Seiten (84, 85) des rechteckigen Querschnitts bei ihrer Passage vom rechteckigen Querschnitt zum kreisförmigen Ende progressiv zunehmen, um das elektrische Feld für die über die inneren Verbindungsflächen des Übergangs übertragene RF-Leistung zu reduzieren.
  2. Ultrahochfrequenzübergang nach Anspruch 1, dadurch gekennzeichnet, dass der Körper (78) des Übergangs einen mittleren Teil (94) zwischen dem Ende (80) in Form einer Röhre mit rechteckigem Querschnitt und dem Ende (90) in Form einer kreisförmigen zylindrischen Röhre umfasst, wobei der mittlere Teil Außenflächen in Kontakt mit der Umgebung hat, einerseits zwei flache äußere Verbindungsflächen (100, 102) in jeweiligen Ebenen (Ph, Pb), symmetrisch relativ zu einer durch die Achse ZZ' verlaufenden Ebene (P1) parallel zu den langen Seiten (84, 85) des rechteckigen Endes (80) des Körpers (78) geneigt, und andererseits zwei weitere flache äußere Verbindungsflächen (104, 106), die auf beiden Seiten einer anderen durch die ZZ' Achse verlaufenden Ebene (P2) parallel zu den kurzen Seiten (86, 87) des rechteckigen Endes (80) des Übergangs symmetrisch sind.
  3. Ultrahochfrequenzübergang nach Anspruch 2, dadurch gekennzeichnet, dass in einer besonderen Ausgestaltung die Abmessungen des Körpers (78) des Übergangs wie folgt sind:
    - Länge L = 99 mm entlang der ZZ'-Achse,
    - Durchmesser D des kreisförmigen Endes (90) = 205 mm,
    - die konische Innenfläche (130) mit einem Kegel in einem Winkel am Scheitelpunkt von θ = 135°,
    - der innere rechteckige Querschnitt des rechteckigen Endes (80) mit einer Höhe H = 82 mm und einer Breite L = 165 mm,
    - jede Ebene Ph und Pb der Außenflächen, die relativ zur ZZ'-Achse geneigt sind, bildet einen Winkel α = 52°,
    - der vertikale Krümmungsradius Rvc in der Ebene (P3), die lotrecht zur ZZ'-Achse ist und durch diese Achse verläuft, beträgt 60 mm.
  4. Ultrahochfrequenzübergang nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass er einen Verbindungsflansch (150) einstückig mit dem rechteckigen Ende (80) des Körpers (78) und ein kreisförmiges zylindrisches Trennfenster (160) einstückig mit dem kreisförmigen Ende (90) des Körpers umfasst.
  5. Elektronenröhre, ausgewählt aus Klystron, TOP oder anderen Ultrahochfrequenz-Leistungsröhren, dadurch gekennzeichnet, dass sie einen RF-Ausgangsübergang nach einem der Ansprüche 1 bis 4 umfasst.
EP09178423.1A 2008-12-23 2009-12-08 Angepasster Übergang eines RF-Ausgangs für leistungsfähige elektronische Hyperfrequenzröhre Active EP2202774B1 (de)

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FR0807393A FR2940519A1 (fr) 2008-12-23 2008-12-23 Transition adaptee de sortie rf pour tube electronique hyperfrequences de puissance

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EP2202774B1 true EP2202774B1 (de) 2013-06-05

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JP5830816B2 (ja) 2015-12-09
US20100295636A1 (en) 2010-11-25
US8344626B2 (en) 2013-01-01
JP2010157504A (ja) 2010-07-15
EP2202774A1 (de) 2010-06-30
FR2940519A1 (fr) 2010-06-25

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