EP1844499A1 - Utilisation de composants supraconducteurs en couches minces comme inductance variable, dispositifs incluant de tels composants, et procede de commande associe - Google Patents
Utilisation de composants supraconducteurs en couches minces comme inductance variable, dispositifs incluant de tels composants, et procede de commande associeInfo
- Publication number
- EP1844499A1 EP1844499A1 EP06709079A EP06709079A EP1844499A1 EP 1844499 A1 EP1844499 A1 EP 1844499A1 EP 06709079 A EP06709079 A EP 06709079A EP 06709079 A EP06709079 A EP 06709079A EP 1844499 A1 EP1844499 A1 EP 1844499A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- frequency
- superconductive
- inductive
- wave
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/70—High TC, above 30 k, superconducting device, article, or structured stock
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/70—High TC, above 30 k, superconducting device, article, or structured stock
- Y10S505/701—Coated or thin film device, i.e. active or passive
Definitions
- the present invention relates to a use of a thin-film superconductor component as variable inductance. It also relates to devices performing such use, as well as a method of controlling the inductance of such a component.
- This invention is in the field of superconductive electrical and electronic components for the electrical engineering or electronics, telephony, antennas and high frequency components sectors. These components are useful in particular for medical imaging, radar and defense electronics, mobile telephony, as well as television or satellite communication.
- the production of thin-film superconducting inductive components is generally accomplished by deposition of a superconducting film, generally by vacuum methods such as cathode sputtering. or the pulsed laser ablation, then the lithographic photo definition of one or more turns. In this technique the dimension of the device increases with the value of its inductance.
- a practical example of embodiment consists of a coil comprising 5 turns whose external diameter is 15 mm, with tracks of 0.4 mm width spaced 0.3 mm having an inductance of 2.12 ⁇ H, which is described in the thesis dissertation supported by Jean-Christophe Ginefri on 16 December 1999 at rUniverRInstitut_dp_Bari.qX: Tp ⁇ -intit-ulé--
- each inductive component occupies a surface of more than 700mm 2 :
- the components obtained may be subject to wear. Often, they impose a significant amount of space.
- An object of the present invention is to overcome all or part of these disadvantages.
- the authors of the present invention propose a method for producing an inductive superconductive component in thin layers, good performance in inductance value as in miniaturization and integration.
- This inductive superconductive component has at least two
- terminals and comprises at least one line segment integrating at least one of these terminals, this line segment constituting a conductive or superconducting layer within a stack of alternately superconductive and insulating films.
- this line segment may consist of a superconducting line passing through the component and on which this stack is deposited.
- the present invention proposes to use, as variable-inductance component as a function of the current flowing through it, an inductive superconductive component having at least two terminals and comprising at least one line segment integrating at least one of these terminals.
- an inductive superconductive component having at least two terminals and comprising at least one line segment integrating at least one of these terminals.
- a line segment constituting a conductive or superconducting layer within a stack of alternately superconductive and insulating films.
- the invention proposes an electronic device comprising at least one such inductive superconducting inductor variable component depending on the current flowing therethrough, said superconducting inductive component having at least two terminals and comprising at least one line segment integrating at least one of these terminals, this line segment constituting a conductive or superconductive layer within a stack of alternately superconductive and insulating films.
- the invention proposes such a use in which the inductance value of the superconductive inductive component is modified or controlled by current control means acting on a direct current which passes through said component.
- the invention proposes in particular a method for controlling the inductance of a superconductive inductive component, this superconductive inductive component having at least two terminals and comprising at least one line segment integrating at least one of these terminals, this line segment. constituting a conductive or superconductive layer within a stack of alternately superconductive and insulating films, this component being subjected to a voltage or an alternating current, this method comprising an injection of a substantially continuous control current in superposition of the alternating current passing through said superconductive inductive component.
- a device comprises at least one superconductive inductive component which is crossed by an alternating current.
- This device further comprises means for controlling or modifying the inductance value of said superconductive inductive component, these means acting on the intensity of a direct current passing through said superconductive inductive component and superimposed on the alternating current.
- the superconductive inductive component may be used in an electronic circuit performing a frequency filtering, at least one characteristic of which is modified by modifying the inductance of said superconducting inductive component.
- the superconductive inductive component can also be used within an electronic circuit producing a delay line, at least one of which is modified by modifying the inductance of said superconducting inductive component.
- the superconductive inductive component may be used in an electronic circuit producing an antenna manufactured from a thin superconducting film, at least one characteristic of this antenna being controlled or modified by modifying the inductance of said inductive component superconductor.
- the invention also proposes a phase shift radar device comprising a plurality of antennas each comprising at least one electronic circuit including a delay line, this delay line being arranged so that each of said antennas transmits or receives a signal whose phase is shifted relative to that of the neighboring antennas, this arrangement being controlled by modifying the inductance of said superconductive inductive component.
- Another object of the invention is then to use these variations of inductance to perform new electronic treatments or to perform new electronic treatments that were made in the state of the art very differently or with other types of components.
- the invention also proposes such a use in which the superconductive inductive component is subjected to a voltage or a wave current. constituting at least one wave, to which it reacts with an inductive behavior varying within the same period of this wave, this variation producing a modification of at least one characteristic of this wave.
- a device comprises at least one such superconducting inductive component which is subjected to a voltage or an undulatory current constituting at least one wave, to which said component reacts with a varying inductive behavior within the same period of this wave, this variation producing a modification of at least one characteristic of this wave. More particularly, the invention proposes such a use for producing a frequency mixer, as well as a device implementing this use.
- At least one such superconductive inductive component is subjected: on the one hand to an input wave comprising at least a first component constituting a signal, called an input signal, at a first frequency, called a frequency high, and
- such a mixer comprises at least one superconductive inductive component mounted in parallel with an oscillator component.
- such a mixer comprises at least one oscillator component in parallel as well as a serial superconducting inductive component mounted downstream and at the output of which is connected at least one capacitive and inductive assembly producing a low-pass filter.
- the invention also proposes a system for receiving an electromagnetic radio transmission signal comprising such a mixer.
- the invention also proposes such a use for producing a frequency modulator, as well as a device implementing this use.
- At least one such superconducting inductive component is subjected:
- an input wave comprising at least a first component constituting an input signal at a first frequency, called a low frequency
- the inductive behavior of said superconductive inductive component then produces an output wave comprising at least a second wave component according to a second frequency, referred to as the high frequency, approximately equal to the sum of the low frequency and the oscillation frequency, said second component constituting a output signal dependent on the input signal.
- such a modulator comprises at least one oscillator component in parallel and a superconducting inductive component in series mounted downstream and at the output of which is connected at least one capacitive and inductive assembly producing a high-pass filter.
- the invention then proposes a system for transmitting an electromagnetic radio transmission signal comprising such a modulator.
- the invention provides an audiovisual broadcasting system or communication or satellite using at least one of these devices.
- FIG. 1 is a diagram of a stack E of alternately superconducting layers C1 and insulating layers C 2 deposited on a substrate S so as to produce an inductive component
- FIG. 2A is a view from above of a superconducting line LS comprising an inductive component consisting of alternately superconductive C1 and insulating C2 films;
- FIG. 2B is a sectional view of a superconducting line LS comprising an inductive component E consisting of alternately superconductive films C1 and insulators C2;
- FIG. 3A is a photograph of the pattern used for the tests showing the location of the current inputs II and 12, the measurement pads Vl and V2 of the potential difference across a bridge receiving a thin-film inductive component. , as well as the location of it;
- FIG. 3B represents the photolithographic mask used to make the test pattern of FIG. 3A;
- FIG. 4 is a diagram of the measuring device used to characterize a superconductive inductive component according to the invention.
- FIG. 5 illustrates a potential difference measured between the pads Vl and V2 (solid lines) when a current (dotted) sawtooth at the frequency of 1000 Hz flows in the sample;
- FIG. 7 illustrates a delay line implementing a superconductive inductive component according to the invention
- FIG. 8 illustrates a schematic diagram of a phase-shift antenna using such delay lines
- FIG. 9 is a curve representing the value of the difference in potential measured between the pads V1 and V2 as a function of the intensity flowing between the pads II and 12, during a period of an alternating current I A c at a frequency of 2 kHz;
- FIG. 10 is a curve representing the value of the potential difference measured between the pads V1 and V2 as a function of time, when a reciprocating AC current I AC sawtoothed (dashed) at the frequency of 10 kHz circulates in the sample, in the case where a DC current I DC also circulates in the sample, and for intensities of this DC current I D c respectively 0 A, 5 ⁇ A, and 10 ⁇ A.
- FIG. 11 illustrates inductance values according to the frequency and for different intensities of this direct current I D c respectively equal to OA (square points), 5 ⁇ A (circles), 10 ⁇ A (rising triangles) and -10 ⁇ A (triangles). descendants);
- FIG. 12 is a block diagram of a tunable high-pass filter according to the invention.
- FIG. 13 is a block diagram of a tunable low-pass filter according to the invention.
- FIG. 14 is a block diagram of a heterodyne mixer according to the prior art, using a diode
- FIGS. 15 and 16 are schematic diagrams of heterodyne mixers according to the invention.
- - Figures 17 and 18 are block diagrams of modulators according to the prior art, based on diodes and respectively transistors;
- FIG. 19 is a block diagram of a modulator according to the invention.
- the principle implemented in the component and its production method according to the invention comprises a stack E of thin films, or thin layers, alternately superconducting C1 and insulating C2, deposited on a substrate S, with reference to FIG. 1, or well on a superconducting line LS. It is important that the C2 films are insulators and good control of possible defects of growth that might put two fitms ⁇ superconducting neighbors in direct contact. This stack makes it possible to obtain particularly efficient components, inter alia because of a very high inductance value with respect to their size.
- the principle consists in obtaining a modification of this inductive behavior by passing it through a determined continuous current IDC.
- the first film deposited to make the stack E is insulating as shown in FIG.
- inductive components into a superconducting circuit can be carried out as shown in FIGS. 2A and 2B using the thin film deposition techniques well known to those skilled in the art, for example laser ablation, radio-frequency sputtering, vacuum evaporation, chemical vapor deposition and, in general, any deposition technique that makes it possible to obtain thin layers.
- thin film deposition techniques well known to those skilled in the art, for example laser ablation, radio-frequency sputtering, vacuum evaporation, chemical vapor deposition and, in general, any deposition technique that makes it possible to obtain thin layers.
- the materials chosen are compounds YBa 2 Cu 3 O 7 -O for superconductive films and LaAIO 3 for insulating films.
- the thicknesses are lOnm 10 "(8 m) for superconducting films and 4 nm (4.10" 9 m) po ⁇ rles RLMS ⁇ ⁇ ⁇ solalltsr ⁇ 4 pa "ries films were deposited.
- the films After deposition, the films have been etched so as to obtain the pattern shown in FIG. 3A in which the metallized contacts II, 12 which make it possible to bring the current into the sample and those which make it possible to measure the voltages Vl and V2 at the terminals of the central element, called bridge, of the pattern.
- the size of the bridge is 10 ⁇ m x 20 ⁇ m.
- the modification of the value of the inductance can however also be obtained with patterns of the same shape but of different dimensions or with patterns of different shape from that shown in the figures.
- the measuring device used to characterize the samples of superconductive inductive components according to the invention comprises a generator GBF creating a variable current in the time I (t) which passes through the resistance R and the sample Ech via the contacts II and 12.
- the potential difference across the resistor R is amplified by a differential amplifier AI and sent to an input YI of the oscilloscope Ose. It makes it possible to know the intensity I (t) of the current passing through the sample.
- the potential difference across the sample is taken at V1 and V2, amplified by the amplifier Av and sent to the input Yv of the oscilloscope Ose.
- Figure 5 shows the signals collected in YI and Yv when the sample is at a temperature of 37 K.
- the sample was placed in a helium cryogenerator but any process to obtain a temperature below critical temperature of the studied sample is suitable.
- the generator delivers a sawtooth current at the frequency of 1000 Hz.
- the value of the current I (t) has been directly reported. It is observed that the potential difference V (t) between V1 and V2 is in the form of slots, which indicates that V (t) is proportional to the derivative with respect to the time of I (t). This characteristic indicates that the sample behaves well as an inductive component.
- the ratio of the amplitude of the signals obtained is in the ratio of the applied frequencies, which again is typical of an inductive component.
- the inductance of the component produced according to the invention is equal to 535 ⁇ H ⁇ 10 ⁇ H.
- the components tested did not all have such a high inductance but values of the order of a few tens of microhenry were _ 1 o _ commonly obtained with components of identical shape to that presented here.
- FIG. 10 shows the value of the potential difference V measured between the pads V1 and V2, during a period of the saw-tooth alternating current IAC at a frequency of 10 kHz, and in the superconducting state. .
- This potential difference V is represented on three different curves obtained by passing or not the test device by a continuous current IDC.
- a second curve for this voltage V is obtained.
- IDC 5 ⁇ A (micro-amperes)
- IAC 10 ⁇ A (microamperes)
- a third curve for this voltage V indicates an inductance of the same device tested even lower than the first and second curves.
- 11 represents a measurement of the inductance of the test device over a frequency range between 100 Hz and 10 kHz, for superimposed continuous DCI values taking the values of 0.5 ⁇ A, + 10 ⁇ A, and -10 ⁇ A (micro -ampées). Over all of this frequency range, it is found that the value of the inductance decreases when the DC current IDC increases in intensity, and in both directions of this current IDC. More particularly in the frequency range where the inductance is substantially constant, ie between 1 and 10 kHz, this inductance is a decreasing function of the intensity of this superimposed continuous current IDC.
- the invention thus provides an inductive component with variable inductance as a function of current flows through it.
- the invention thus provides an adjustable or tunable inductive component by controlling a current flowing through it.
- this variation of inductance within a period then produces an alternating voltage across the component which represents a modified version of the signal carried by this current.
- this voltage produced would be the time derivative of the current flowing through the component.
- the voltage produced is a modified image of this derivative, and therefore represents a modified version of the input signal.
- the invention also provides an inductive modification or signal processing component.
- the superconducting inductive components obtained by the method according to the invention can find applications in the fields of electrical engineering or electronics, telephony, antennas and passive high frequency components, in particular for medical imaging. as well as radar and defense electronics.
- superconductive inductive components are implemented in antenna systems.
- MRI magnetic resonance imaging
- using tuned antennas it is then possible to make an agreement of an antenna by adjusting the inductance of one or more of the inductive components that it comprises.
- An important parameter in the efficiency of the antenna is the overvoltage coefficient which is proportional to its inductance.
- a superconducting antenna makes it possible to increase this coefficient because its ohmic resistance is very weak. It is conceivable to obtain a new increase in the overvoltage coefficient by including in the antenna circuit a device of the type of those described here.
- a particularly favorable case will be that where the antenna itself is made from a thin superconducting film.
- superconductive inductive components are implemented in delay lines.
- Delay lines are in common use in all areas of electronics. The simplest form that can take a delay line is shown in Figure 7.
- the presence in the circuit of the inductance L and of the capacitor C causes a phase difference between the voltage V and the current L.
- An example of use is that of the phase shift radars which make it possible to explore the surrounding space with a system of fixed antennas.
- FIG. 8 A schematic diagram for such a system is shown in FIG. 8.
- the main line carrying the current I is coupled to the different antennas.
- Each of these includes in its circuit a delay line.
- each antenna transmits or receives a signal whose phase is offset from that of the neighboring antennas.
- By varying this phase shift the direction of the emitted radiation is changed.
- defense electronics we have long studied the introduction of superconducting components in electronic circuits, particularly for radar and more generally countermeasures. The presence of high inductance components, small in size and whose manufacturing uses processes similar to those used for the rest of the circuit would be an important innovation in this area.
- the component according to the invention because it is tunable in use, can be advantageously used to modify the characteristics or the behavior of a device in which it is included. This makes it possible, for example, to modify or calibrate the characteristics of a composite and / or active antenna, by global adjustment or differentiated inductance within the delay lines of the individual antennas that compose it.
- Such powerful and easily integrable inductive components can also be used generically in most general electronics applications, in particular to perform filtering functions of all types, for example high-pass, low-pass or pass-through. bandaged. It is then possible to produce highly integrated and / or miniaturized filters.
- a component according to the invention makes it possible to integrate an inductance of significant value in a circuit of small size As illustrated in FIGS. 12 and 13 for high-pass and low-pass filters, it is then it is possible to adjustably filter an input voltage V in to obtain an output voltage V out / using a variable inductance L v according to the invention.
- the use of inductive components according to the invention makes it possible to produce in integrated circuits filters having only capacitors and inductors, which are not very dissipative compared to filters constructed with capacitors and resistances.
- the component according to the invention can also be used advantageously to produce a type of electronic device called a mixer, and used in particular in heterodyne detection.
- a mixer is used in the vicinity of a receiving antenna to decode 12 GHz signals received from a direct television satellite, and draw a signal at a frequency of 2 GHz which will be sent by coaxial cable to a demodulator.
- the mixers are typically made using discrete components which are causes of cost and fragility encumbrance, or using non-linear components, for example diodes, which have certain disadvantages, such as a significant dissipation of energy or the fact of requiring a high signal level.
- Figure 14 thus illustrates a block diagram of such a diode mixer.
- FIG. 15 represents a block diagram of a variable inductive component according to the invention, used to perform a mixer function in a simple manner.
- the current to detect it of frequency f1 with the current iO coming from a local oscillator at the frequency f0, is sent on a component with variable inductance LvI according to the invention.
- the value of the inductance of the component according to the invention LvI then depends on the current received, according to a function of the magnitude il + iO. More particularly under certain conditions, for example over certain frequency ranges, this function can be written in the form of a relationship comprising a coefficient ⁇ that can be determined by different types of measurements, for example similar to those illustrated in FIGS. 10. Such a relationship can then be written in the following form:
- LO is the inductance value of the component when the superimposed direct current I D c is zero.
- This fl-fO frequency component then has the following form:
- Vf 2 ⁇ . ⁇ .i 0 -ii-fi-sin [2 ⁇ (f 0 -fi) t + ⁇ ]
- ⁇ is the phase of the signal of the input signal relative to that of the oscillator.
- This operation can be used, for example, to obtain a signal S2 by extracting it from the signal S1 coming, for example, from a reception antenna.
- the tunable inductive component according to the invention can also be advantageously used to produce a device including a modulator.
- a modulator is typically used to obtain a signal at a high frequency from a signal component S2 at a relatively low frequency f2 by adding a wave at a frequency f0 close to f1.
- modulators typically made using discrete components that are causes of cost and fragility clutter, or using integrated non-linear components, which have certain drawbacks, such as for example a certain dissipation of 'energy.
- FIGS. 17 and 18 thus represent block diagrams of modulators respectively made using diodes (FIG. 17) and using transistors (FIG. 18).
- the inductances that are not specified as variable or controlled can of course also be made in the form of a superconductive inductive component, so as to homogenize the device obtained and maintain or improve the gains of the invention, for example in terms of cost, reliability, performance or bulk.
- the current control according to the invention in particular makes it possible to drive a greater part of functions and adjustments in a fully electronic manner.
- Such control then allows greater flexibility in the design of the devices concerned, but also to provide new features and performance compared to the state of the art.
- the production of these components in the form of thin superconducting layers allows for greater miniaturization as well as integration on a much larger scale. This makes it possible to design less dissipative systems, multiply the components, and improve the power and / or reduce the size. Integration also improves the reliability and reproducibility of such devices, and reduces manufacturing costs.
- the invention is not limited to the examples that have just been described and many adjustments can be made to these examples without departing from the scope of the invention.
- the number of respectively insulating and superconductive films is not limited to the examples described.
- the dimensions of the superconductive inductive components as well as their surfaces can evolve according to the specific applications of these components.
- the respectively superconductive and insulating films can be made from other compounds than those proposed in the example described, provided that these compounds satisfy the physical conditions required for the applications.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0500454A FR2880991B1 (fr) | 2005-01-17 | 2005-01-17 | Utilisation de composants supraconducteurs en couches minces comme inductance variable, dispositifs incluant de tels composants, et procede de commande associe |
PCT/FR2006/000072 WO2006075098A1 (fr) | 2005-01-17 | 2006-01-13 | Utilisation de composants supraconducteurs en couches minces comme inductance variable, dispositifs incluant de tels composants, et procédé de commande associé |
Publications (2)
Publication Number | Publication Date |
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EP1844499A1 true EP1844499A1 (fr) | 2007-10-17 |
EP1844499B1 EP1844499B1 (fr) | 2008-10-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP06709079A Not-in-force EP1844499B1 (fr) | 2005-01-17 | 2006-01-13 | Utilisation de composants supraconducteurs en couches minces comme inductance variable, dispositifs incluant de tels composants, et procede de commande associe |
Country Status (7)
Country | Link |
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US (1) | US8126523B2 (fr) |
EP (1) | EP1844499B1 (fr) |
JP (1) | JP2008527732A (fr) |
AT (1) | ATE411621T1 (fr) |
DE (1) | DE602006003188D1 (fr) |
FR (1) | FR2880991B1 (fr) |
WO (1) | WO2006075098A1 (fr) |
Families Citing this family (6)
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FR2858463B1 (fr) * | 2003-07-28 | 2007-08-24 | Centre Nat Rech Scient | Procede et systeme de realisation de composants inductifs supraconducteurs en couches minces, et dispositifs incluant de tels composants |
US9509274B2 (en) * | 2014-09-18 | 2016-11-29 | Northrop Grumman Systems Corporation | Superconducting phase-shift system |
JP6271384B2 (ja) * | 2014-09-19 | 2018-01-31 | 株式会社東芝 | 検査装置 |
US9800236B2 (en) | 2015-11-10 | 2017-10-24 | Infineon Technologies Ag | Integrated analog delay line of a pulse-width modulator |
US10069662B2 (en) | 2015-11-10 | 2018-09-04 | Infineon Technologies Ag | Mixed analog-digital pulse-width modulator |
CN113013887B (zh) * | 2021-03-07 | 2022-11-25 | 天津大学 | 一种用于超导能源管道的具有储能功能的超导有源滤波器 |
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2005
- 2005-01-17 FR FR0500454A patent/FR2880991B1/fr not_active Expired - Fee Related
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2006
- 2006-01-13 WO PCT/FR2006/000072 patent/WO2006075098A1/fr active Application Filing
- 2006-01-13 AT AT06709079T patent/ATE411621T1/de not_active IP Right Cessation
- 2006-01-13 DE DE602006003188T patent/DE602006003188D1/de active Active
- 2006-01-13 EP EP06709079A patent/EP1844499B1/fr not_active Not-in-force
- 2006-01-13 JP JP2007550817A patent/JP2008527732A/ja active Pending
- 2006-01-13 US US11/795,422 patent/US8126523B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
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See references of WO2006075098A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE411621T1 (de) | 2008-10-15 |
US20080119363A1 (en) | 2008-05-22 |
EP1844499B1 (fr) | 2008-10-15 |
US8126523B2 (en) | 2012-02-28 |
WO2006075098A1 (fr) | 2006-07-20 |
FR2880991A1 (fr) | 2006-07-21 |
DE602006003188D1 (de) | 2008-11-27 |
JP2008527732A (ja) | 2008-07-24 |
FR2880991B1 (fr) | 2007-04-06 |
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