EP2936537A1 - Générateur de microondes à cathode virtuelle oscillante et à réflecteurs ouverts - Google Patents
Générateur de microondes à cathode virtuelle oscillante et à réflecteurs ouvertsInfo
- Publication number
- EP2936537A1 EP2936537A1 EP13820835.0A EP13820835A EP2936537A1 EP 2936537 A1 EP2936537 A1 EP 2936537A1 EP 13820835 A EP13820835 A EP 13820835A EP 2936537 A1 EP2936537 A1 EP 2936537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- radius
- open
- reflectors
- waveguide
- 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.)
- Granted
Links
- 229920000134 Metallised film Polymers 0.000 claims description 4
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- 230000009467 reduction Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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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
- H01J25/32—Tubes with plural reflection, e.g. Coeterier tube
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/74—Tubes specially designed to act as transit-time diode oscillators, e.g. monotrons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
Definitions
- the present invention relates to a microwave wave generator device with oscillating virtual cathode (i.e. VIRCATOR type, for English ("VIRtual oscillaTOR method").
- VIRCATOR type for English
- An oscillating virtual cathode microwave wave generating device traditionally comprises a diode consisting of a cathode and an anode, emitting an electron beam, and a cylindrical waveguide.
- the anode is generally composed of a thick frame and a thin sheet (frequently called "thin anode” for simplification).
- the term "thin” is used here to mean that the sheet of the anode has a thickness of a few tenths of a micrometer.
- the thin sheet is, in turn, coupled to the cylindrical waveguide.
- the thin anode separates the cathode from the waveguide at the interface between the thick armature and the waveguide; and, on the other hand, the thick frame generally surrounds the cathode.
- This type of device is known to produce microwave pulses of high power.
- a potential difference is applied across the diode creating an electronic emission at the cathode.
- the transverse components of the electric field with respect to a longitudinal axis of the waveguide are canceled, the electron beam begins to pinch under the effect of its magnetic field.
- the electron density becomes so strong that the beam can no longer propagate in the waveguide.
- Charge buildup commonly referred to as the "virtual cathode,” then forms behind the thin sheet. The virtual cathode then deflects many electrons until some return to the cathode, through the thin sheet.
- the virtual cathode While moving closer to the thin anode, the virtual cathode increases its charge density until it bursts under the effect of its own charge of space and a new virtual cathode is reconstituted a little further in the waveguide. It is this principle of oscillation of the virtual cathode which is at the origin of a microwave wave emission.
- Such a device is compact and simple in design. Its operation is robust and does not require recourse to an external magnetic field. On the other hand, its power efficiency (ratio of the maximum power of the wave emitted to the maximum electrical power injected into the diode) is very low, of the order of 1%. Moreover, the frequencies of the emitted wave directly follow the temporal variations of the applied voltage, which leads to obtaining an electromagnetic wave of poor spectral quality.
- the reflectors are thin walls (that is to say a few tenths of micrometers thick), transparent to the electrons and able to reflect the microwave wave created by the virtual cathodes. In addition, they generally have a circular cylindrical shape.
- This type of device with reflectors makes it possible to obtain significantly improved performances compared with devices without a reflector. However, there is an optimal number of reflectors beyond which the power output decreases.
- the present invention aims to increase the efficiency of microwave VIRCATOR type axial tubes with reflectors.
- an oscillating virtual cathode microwave wave generator device comprising a cathode, and a thin anode positioned at an inlet of a cylindrical waveguide of radius R G , the thin anode being located between the cathode and the waveguide, characterized in that the device comprises at least a first open reflector and a last open reflector located in the waveguide, and transparent to the electrons and capable of reflecting a microwave wave created by at least one virtual cathode generated in the waveguide, the first open reflector being the closest reflector of the thin anode, and the last open reflector being the closest reflector of the an output of the waveguide, and the last open reflector having a radius R RN less than a radius R R1 of the first reflector.
- an oscillating virtual cathode microwave wave generator device in axial configuration, comprising a cathode, and a thin anode positioned at an inlet of a cylindrical waveguide of radius R G , the thin anode being located between the cathode and the waveguide, the device further comprising at least a first open reflector and a last open reflector located in the waveguide, and transparent to the electrons and able to reflect a wave a microwave created by at least one virtual cathode generated in the waveguide, the first open reflector being the closest reflector to the thin anode, and the last open reflector being the closest reflector to an output of the waveguide wave, the device being characterized in that it comprises a plurality of open reflectors, including the first and the last open reflector such as a reflector of the plurality has a radius R (+ I) less than or equal to a radius of a RR Î of the directly previous plurality reflector and in that the last opened reflector has
- a reflector is said to be "open” when it obstructs only a centered fraction of straight section of the cylindrical waveguide, leaving a substantially annular opening between a periphery of the reflector and an inner wall of the waveguide.
- Such a device not only increases the efficiency of a conventional axial VIRCATOR, but also increases the efficiency of an axial VIRCATOR with reflectors.
- the first open reflector is advantageously located at a distance D1 from the thin anode, equivalent to twice the distance d A k separating the cathode from the thin anode.
- the first virtual cathode is created and positioned approximately midway between the thin anode and the first reflector.
- two consecutive open reflectors have between them a distance equal to the distance D1 separating the thin anode of the cathode.
- the radius R R i of the first open reflector is equal to or greater than 0.75 RG.
- a radius R R2 of at least one second open reflector, located between the first open reflector and the last open reflector, is less than or equal to the radius R R i of the first open reflector and greater than the radius R RN of the last open reflector.
- a radius R R2 of at least one second open reflector, located between the first open reflector and the last open reflector, is smaller than the radius R R i of the first open reflector and greater than or equal to the radius R RN of the last open reflector.
- a reduction of the radius of the successive reflectors makes it possible to position the electrons in the vicinity of a longitudinal axis z of the waveguide preventing them from interacting with the microwave wave in the regions where it has amplitudes of maximum electromagnetic fields.
- the average position of the virtual cathode formed beyond a rank reflector (i + 1) is thus remote from the zone where the amplitude of the wave is strong.
- At least the radius R RN of the last reflector is less than 0.75 RG, or possibly the radius R RN of the last reflector is less than 0.5 RG.
- the radius R R2 of a second reflector is less than 0.75 R G , or the radius R R2 of the second reflector is less than 0.5 R G.
- the radius R RI of any one of the plurality of reflectors from a second reflector i.e. for i greater than or equal to 2, i being between 2 and N
- the radius R RI of the reflector is less than 0.5 RG-
- the radius R RI remains greater than the radius R RN of the last reflector.
- the radius R RI reflectors is gradually reduced from the first to the last, without lower limit, which increases the performance of the device.
- the device comprises, between the first and the last open reflector, a plurality of open reflectors, such that a reflector of the plurality of ranks (i + 1) has a radius R R ( I + 1) ) less than or equal to the radius R RI of a reflector of the plurality of rank (i) directly preceding.
- a reflector of the plurality of rank (i) has a radius R RI greater than the radius R RJ of a reflector of the plurality of rank (j> i).
- the radius R R ( , + i ) of the reflector of the plurality of rank (i + 1) is smaller than the radius R RI of the reflector of the plurality of rank (i) directly preceding, and the radius R R ( , + i ) of the reflector of the plurality of rank (i + 1) is also possibly greater than the radius R RN of the last reflector and the radius R RI of the reflector of the plurality of rank (i) is less than the radius R R1 of the first reflector.
- the reflectors may be decreasing in steps, or else linearly or exponentially decreasing from the first to the last, for example.
- a device comprises equal ray reflectors in groups, for example two by two or three by three, or more.
- the first reflector and the second reflector have identical radii
- the third reflector and the fourth reflector have identical radii, and so on, for example with the radius of the third and fourth reflectors lower than that of the first and second reflectors. .
- all the reflectors present in the waveguide have the same radius, except the last reflector which has a smaller radius.
- the first reflector and the second reflector have a radius greater than 0.75 RG. And for example the radius of the last reflector is equal to or less than 0.5 RG.
- the spokes of the reflectors between the first reflector and the last reflector are for example equal to or less than the radius of the first reflector, or even 0.75 RG, and / or equal to or greater than the radius of the last reflector, or even 0.5 RG -
- the radii of the reflectors between the first reflector and the last reflector are possibly all equal to each other, or decreasing such that the radius of a reflector is equal to or less than that of the previous one.
- the rays of the reflectors of the plurality of reflectors decreasing at a constant pitch p.
- the first and second reflectors have the same radius R R i
- the third reflector has for example a radius R R3 less, worth for example Rm-p.
- a fourth reflector has for example a smaller radius to the third value, for example RR3-P, and so on. In other words, if a reflector has a smaller radius than the directly preceding reflector, it is reduced by one step p.
- the pitch p represents for example an absolute value, for example at each reduction, the radius of a reflector is reduced by 10 mm, or 5 mm; or a relative value, for example at each reduction, the radius of a reflector is reduced by 10% with respect to the radius of the immediately preceding reflector, or 5%.
- the plurality of open reflectors comprises at least three open reflectors, that is to say, the device comprises at least three open reflectors positioned in the waveguide. It comprises for example between three and six reflectors.
- the plurality of reflectors thus has at least two different radii sizes, that of the first reflector R R i, that of the last reflector R RN which is less than RRI, and the radius of the reflectors situated between the first and the last reflector which would be example all equal to the first or all equal to the last. At most, the plurality of reflectors has as many different radii as there are reflectors.
- a second reflector positioned between the first reflector and the last reflector, has a radius R R2 which is: either equal to the radius R R1 of the first reflector, or between the radius R R1 of the first reflector and the radius R RN of the last reflector, equal to the radius R RN of the last reflector.
- R R2 which is: either equal to the radius R R1 of the first reflector, or between the radius R R1 of the first reflector and the radius R RN of the last reflector, equal to the radius R RN of the last reflector.
- At least one open reflector is also made of aluminized mylar, or that all the reflectors are made of aluminized mylar.
- FIG. 1 represents a conventional axial vircator according to the prior art, according to a longitudinal view
- FIG. 2 represents an axial Vircator with reflectors according to the prior art, according to a longitudinal view;
- Figure 3 shows a front view of a closed reflector and an open reflector
- FIG. 4 represents an example of an axial Vircator with five open reflectors of constant radius, in a longitudinal view, serving as a control device for analysis of simulation results
- FIG. 5 represents an axial Vircator with five open reflectors according to one embodiment of the invention, according to a longitudinal view;
- Figure 6 presents a first table summarizing the N-ray open-ended constant-radius reflectors, i.e. all having the same radius, used to compare simulation results;
- FIG. 7 presents a second table summarizing the devices with N open reflectors of decreasing radius, according to exemplary embodiments of the invention, with which simulations have been carried out;
- FIGS. 1 to 9 are identical elements shown in FIGS. 1 to 9 are identified by identical reference numerals.
- FIG. 1 An oscillating virtual cathode microwave wave generating device of the prior art commonly called Vircator ("VIRtual Oscillator Method") is shown in FIG.
- the Vircator comprises a diode 2, 3, 4 consisting of a cathode 2 and an anode 3, 4, emitting an electron beam 1, as well as a cylindrical waveguide 5.
- the anode 3, 4 consists of a thick frame 3 and a thin sheet 4 (frequently called “thin anode 4" for simplification).
- the term "thin” is used here to mean that the sheet of the anode has a thickness of a few tenths of a micrometer.
- the thin sheet 4 is, in turn, coupled to the cylindrical waveguide 5.
- the thin anode 4 separates the cathode 2 from the waveguide 5 by being located at an inlet of the guide of the waveguide 5.
- This type of device is known to produce microwave pulses of high power.
- a potential difference is applied across the diode 2, 3, 4 creating an electronic emission at the cathode 2.
- the electron beam 1 bursts under the effect of its own space charge.
- the transverse components of the electric field with respect to an axis z cancel each other, the electron beam 1 begins to pinch under the effect of its magnetic field.
- the electron density becomes so strong that the beam can no longer propagate into the waveguide 5.
- Charge buildup 6, commonly called “virtual cathode 6” is then formed behind the thin sheet 4. The virtual cathode 6 then deviates many electrons until some return to the cathode 2, through the thin sheet 4.
- the virtual cathode 6 moves around an average position which is at a distance from the thin anode 4 approximately equal to that which separates the thin anode 4 from the emitting cathode 2 (the latter being denoted by dAk).
- electrons that are sent back through the virtual cathode 6 towards the cathode 2 passing through the thin anode 4 are modulated at the frequency of the microwave wave and interact with the electron beam 1 created in the space between the cathode 2 and the thin anode 4 by modulating slightly.
- These backscattered electrons are braked between the thin anode 4 and the cathode 2. They are also diverted mainly towards the reinforcement of the anode 3.
- the electrons that cross the virtual cathode 6 take up energy from the microwave wave that propagates in the guide, thus decreasing its intensity.
- the frequency f of the transmitted wave (expressed in GHz) is a function of the distance dAk (expressed in cm) between the cathode 2 of the thin anode 4 and the relativistic factor ⁇ of the electrons at the level of the thin anode 4 in relation to the potential difference applied to the diode 2, 3, 4.
- This frequency can be estimated by the following formula
- V the potential difference applied between the electrodes of the diode 2, 3, 4, m the mass of an electron and c the speed of light.
- the device described above is compact and simple in design.
- Reflectors can be "closed” or “open”. As illustrated in FIG. 3, a reflector is said to be “closed” when it completely encloses a straight section of the guide (this is the case, for example, of the first reflector 8 of FIG. 2), and a reflector is said to be “ when it obstructs only a centered fraction of cross section of the guide, leaving a substantially annular opening 10 between the periphery of the reflector and the inner wall of the waveguide 5 (this is the case, for example, of the reflector 9 of Figure 2).
- the reflector farthest from the thin anode 4 is preferably open to allow the microwave wave to propagate towards the output of the waveguide 5, the output being the end of the waveguide 5 opposite to that where is located the thin anode 4.
- an open reflector has a radius R R greater than or equal to 0.75 times the radius R G of the circular waveguide 5 to reflect the maximum of the radial component of the electric field of the wave.
- the first reflector is positioned inside the waveguide 5 at a distance D1 from the thin anode 4.
- This distance D1 is equal to substantially twice the distance dAk which separates the thin anode 4 from the cathode 2, such that the virtual cathode is created and positioned approximately mid-way between the thin anode 4 and the first reflector.
- the following reflectors are positioned in the waveguide beyond the first reflector, so that the same distance D1 separates two consecutive reflectors, D1 being substantially twice the distance dAk which separates the thin anode 4 from the cathode 2.
- the first reflector has the function of reflecting, like the thin anode 4, the wave emitted by the virtual cathode.
- the reflected wave interacts again with the electrons and the virtual cathode, amplifying the microwave wave.
- a pseudo-cavity 1 1, cylindrical, formed between the thin anode 4, the first reflector and an inner wall of the waveguide 5 makes it possible to enhance the power of the wave created by the virtual cathode. This enhancement of the wave contributes to enhancing the clustering of the electrons of the virtual cathode at the desired frequency.
- the microwave and packetization enhancement mechanism in the first pseudo-cavity 11 is duplicated in the following pseudo-cavities 11 formed by two successive reflectors. (for example 8 and 9 in FIG. 2) and the waveguide 5.
- the electromagnetic wave emitted by the (i + 1) th virtual cathode can flow in the guide 5 beyond the reflector (i + 1), in the direction of the pseudo -complete cavity, via the annular opening 10 present between the periphery of the reflector (i + 1) and the inner wall of the waveguide 5.
- This type of device with reflectors makes it possible to obtain significantly improved performances compared with devices of the prior art without a reflector.
- a device with a single closed reflector displays a yield improvement of the order of 4%.
- the addition of a second reflector, open, leads to an improvement of the order of 6%.
- FIG. 2 An oscillating virtual cathode microwave wave generating device according to an exemplary embodiment of the prior art is for example shown in FIG. 2.
- two reflectors 8, 9, transparent to the electrons and able to reflect the wave microwave created by the virtual cathodes (not shown in Figure 2 for the sake of simplicity), are positioned in the waveguide 5, cylindrical.
- the reflectors are thin, that is to say a few tenths of a micrometer, and have a circular cylindrical shape.
- the first reflector 8 is closed and positioned inside the waveguide 5 at a distance D1 from the thin anode 4.
- This distance D1 is equal to substantially twice the distance dAk which separates the thin anode 4 from the cathode 2, such that the virtual cathode is created and positioned approximately midway between the thin anode 4 and the reflector 8.
- a second reflector 9, open, is positioned in the waveguide beyond the first closed reflector 8, so that the distance D1 separating the two reflectors 8 and 9 is substantially twice the distance dAk that separates the reflector. thin anode 4 of the cathode 2.
- a device according to one embodiment of the invention shown for example in Figure 5 comprises a set of N> 2 open reflectors 9 located in a waveguide 5, made of a material transparent to electrons and able to reflect a wave microwave created by virtual cathodes, such as aluminized mylar.
- All the reflectors 9 are "open" in order to facilitate the propagation of the wave emitted by the different virtual cathodes towards the output of the waveguide 5.
- the internal radius R of the first open reflector 9, located after the thin anode 4 in the waveguide 5, is preferably equal to or greater than 0.75 RG. It thus reflects a maximum of the radial component of the electric field of the wave and strengthens the microwave wave emitted by the first virtual cathode.
- the inner radius R R , subsequent (N-1) open reflectors 9 is progressively reduced, without lower limit.
- the radius size of each reflector is possibly less than 0.75 R G.
- the methods for reducing the size of the radius of the open reflectors 9 are for example the following:
- the radius R (, + I) of the reflector 9 of rank (i + 1) is less than or equal to the radius R Ri of the reflector 9 of rank (i), that is to say of the directly preceding reflector.
- the device comprises, between the first and the last open reflector 9, a plurality of open reflectors 9, such that a reflector of the plurality of rank (i + 1) has a radius R (, + I) lower or equal to the radius R Ri of a reflector of the plurality of rank (i) directly preceding.
- a reflector of the plurality of ranks (i) has a radius R R greater than the radius R Rj of a reflector of the plurality of ranks (j> i).
- the radius R R (i + 1) of the reflector of the plurality of rank (i + 1) is less than the radius R Ri of the reflector of the plurality of rank (i) directly preceding, and the radius R (Î + D of the reflector of the plurality of rank (i + 1) is greater than the radius R RN of the last reflector 9 and the radius R Ri of the reflector of the plurality of ranks (i) is smaller than the radius R R i of the first reflector 9, that is to say that the set of N reflectors then has a radius strictly decreasing from the first to the last, for example according to an affine or exponential function.
- the radius R R ( , + i ) of the rank reflector (i + 1) is reduced relative to the radius R Ri of the rank reflector (i), in order to locate the electrons in the vicinity of the z axis of the waveguide 5 preventing them from interacting with the microwave wave 7 in the locations where the This presents amplitudes of maximum electromagnetic fields.
- the average position of the virtual cathode formed beyond the rank reflector (i + 1) is thus remote from the zone where the amplitude of the wave is strong.
- the device is dimensioned such that the microwave electromagnetic radiation is generated at a frequency close to
- the cylindrical waveguide 5 further has a length of 500 mm.
- the device according to embodiments of the invention comprises N open reflectors 9 (N between 1 and 5 as the case simulated), located in the cylindrical waveguide 5.
- All the open reflectors 9 are set to the same potential as the anode 3, 4 and the cylindrical waveguide 5.
- the first open reflector 9 is positioned so that the first virtual cathode is substantially in the center of the cylindrical pseudo-cavity 1 1 formed by the thin anode 4, this first open reflector 9 and the guide of FIG. waves 5.
- the longitudinal distance D1 which separates the first open reflector 9 from the thin anode 4 is of the order of twice the distance dAk which separates the thin anode 4 from the cathode 2.
- the open reflector 9 of rank (i + 1) is positioned so that the (i + 1) th virtual cathode is formed in the center of the pseudo-cavity formed by the open reflector 9 of rank (i), the open reflector 9 of rank ( i + 1) and the inner wall of the waveguide 5.
- the longitudinal distance separating two successive reflectors ((i) and (i + 1)) is substantially equal to the distance D1.
- the distances D1 are for example 60 mm (FIG. 7 indicating the distances of each reflector with respect to the thin anode 4)
- the internal radius R of the first reflector is greater than 0.75 RG, and is here 60 mm (or about 0.8 RG)
- the radius of the third reflector is reduced (by relative to the two previous ones) at 50 mm (ie about 0.66 RG)
- the radius of the fourth reflector is maintained at 50 mm
- the radius of the fifth reflector is reduced to 40 mm, that is to say about 0,
- at least the last reflector has a radius less than 0.75 R G , and in this case the radius of a reflector is less than 0.75 RG from the third reflector. It should further be noted here that all the rays below R are furthermore less than 0.75 RG.
- the rays of the reflectors are equal in pairs, as far as possible since the device described here comprises five reflectors, and during a reduction, the radii are reduced by a constant pitch, which is here 10 mm. There is thus a step between the second and third reflectors, and between the fourth and fifth reflectors.
- the open reflectors with constant radius N are detailed in the table of FIG. 6, which specifies the number, the positioning relative to the thin anode 4, and the radius of the reflectors present in the different achievements considered.
- the reflectors 9 of the control devices are all open. Their positioning is identical to that of the device according to the invention.
- the radius of each reflector is kept constant at 60 mm, i.e. all the open reflectors 9 of the control devices have identical radii.
- the device according to one embodiment of the invention allows, by reducing the size of the reflectors, d improve the power efficiency for a number of reflectors greater than or equal to 3 (N> 3), while maintaining the transmission frequency (the latter point being illustrated in FIG. 9).
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1262385A FR3000289B1 (fr) | 2012-12-20 | 2012-12-20 | Generateur de microondes a cathode virtuelle oscillante et a reflecteurs ouverts |
PCT/FR2013/053204 WO2014096728A1 (fr) | 2012-12-20 | 2013-12-19 | Générateur de microondes à cathode virtuelle oscillante et à réflecteurs ouverts |
Publications (2)
Publication Number | Publication Date |
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EP2936537A1 true EP2936537A1 (fr) | 2015-10-28 |
EP2936537B1 EP2936537B1 (fr) | 2018-09-12 |
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EP13820835.0A Active EP2936537B1 (fr) | 2012-12-20 | 2013-12-19 | Générateur de microondes à cathode virtuelle oscillante et à réflecteurs ouverts |
Country Status (4)
Country | Link |
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US (1) | US9496114B2 (fr) |
EP (1) | EP2936537B1 (fr) |
FR (1) | FR3000289B1 (fr) |
WO (1) | WO2014096728A1 (fr) |
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CN105914119B (zh) * | 2016-07-04 | 2017-10-20 | 中国工程物理研究院应用电子学研究所 | 一种低引导磁场轴向虚阴极振荡器 |
CN105914118B (zh) * | 2016-07-04 | 2017-10-20 | 中国工程物理研究院应用电子学研究所 | 一种l波段轴向虚阴极振荡器 |
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FR2876218B1 (fr) * | 2004-10-05 | 2006-11-24 | Commissariat Energie Atomique | Dispositif generateur d'ondes hyperfrequences a cathode virtuelle oscillante. |
SE532409C2 (sv) * | 2008-05-08 | 2010-01-12 | Bae Systems Bofors Ab | Anordning för generering av mikrovågor |
-
2012
- 2012-12-20 FR FR1262385A patent/FR3000289B1/fr active Active
-
2013
- 2013-12-19 US US14/652,987 patent/US9496114B2/en active Active
- 2013-12-19 EP EP13820835.0A patent/EP2936537B1/fr active Active
- 2013-12-19 WO PCT/FR2013/053204 patent/WO2014096728A1/fr active Application Filing
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Also Published As
Publication number | Publication date |
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FR3000289B1 (fr) | 2017-08-11 |
US9496114B2 (en) | 2016-11-15 |
FR3000289A1 (fr) | 2014-06-27 |
US20150348736A1 (en) | 2015-12-03 |
EP2936537B1 (fr) | 2018-09-12 |
WO2014096728A1 (fr) | 2014-06-26 |
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