EP3298424A1 - Procédé et système de génération et de détection d'ondes électromagnétiques centimétriques, millimétriques ou submillimétriques, notamment térahertz - Google Patents
Procédé et système de génération et de détection d'ondes électromagnétiques centimétriques, millimétriques ou submillimétriques, notamment térahertzInfo
- Publication number
- EP3298424A1 EP3298424A1 EP16724404.5A EP16724404A EP3298424A1 EP 3298424 A1 EP3298424 A1 EP 3298424A1 EP 16724404 A EP16724404 A EP 16724404A EP 3298424 A1 EP3298424 A1 EP 3298424A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- source
- antenna
- amplifier
- frequency
- electromagnetic waves
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
- G01S13/904—SAR modes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/35—Details of non-pulse systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/491—Details of non-pulse systems
- G01S7/4911—Transmitters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/491—Details of non-pulse systems
- G01S7/4912—Receivers
- G01S7/4913—Circuits for detection, sampling, integration or read-out
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
- G01S13/904—SAR modes
- G01S13/9064—Inverse SAR [ISAR]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/027—Constructional details of housings, e.g. form, type, material or ruggedness
- G01S7/028—Miniaturisation, e.g. surface mounted device [SMD] packaging or housings
Definitions
- the present invention relates to a method and a system for generating and detecting centimetric, millimetric or submillimetric electromagnetic waves, preferably in the terahertz domain.
- the terahertz domain designates electromagnetic waves whose frequency extends from 100 GHz (Gigahertz) to 30 THz (Terahertz), for millimetric or submillimetric wavelengths, typically between 30 ⁇ and 3 mm.
- the invention aims to make simpler, more compact and less expensive systems for generating and detecting Terahertz waves.
- centimetric, millimetric and submillimetric waves can be generated and detected by several devices that can be classified according to their characteristics and parameters in three categories: the devices that are hereinafter referred to as thermal, optical and finally electronic devices.
- heat sources are natural generators of millimeter and submillimeter waves.
- the black body is a source of broad spectrum radiation. Filters can be used to filter millimeter and submillimetric waves.
- thermal detectors that convert the millimeter and submillimeter waves into thermal energy
- pyroelectric devices ie in a material in which a temperature change causes a variation in electrical polarization
- Golay cells which are a type of opto-acoustic detectors mainly used in infrared spectroscopy.
- Thermal detectors are used to detect temperature variations, and for some, passively detect millimeter and submillimeter waves emitted by the environment. They are then sensitive to infrared waves and require the use of filters.
- temperature variations are subject to heat dissipation laws that make the response time of these thermal detectors long: [1].
- the bolometer may be integrated as a camera module, which includes a lens 30 and a focal plane array 31 comprising a plurality of radiation detectors.
- optical millimeter and submillimeter wave sources there are two types of optical millimeter and submillimeter wave sources: those emitting continuous waves ("Continues Wave” in English acronym CW) and those emitting pulsed waves.
- CW continuation waves
- Quantum cascade lasers can work in CW mode as well as in pulsed mode.
- Time Domain Spectrometers TDS are pulsed generators used as broadband sources.
- BWO Backward Wave Oscillators
- gyrotrons as described in the publication [3], which require an intense magnetic field to work.
- US Patent 8907284B2 discloses an integration of this type of detectors in the form of a camera.
- Heterodyne detectors are more sensitive than direct power detectors.
- the operation of the heterodyne detectors consists of transposing the energy of a part of the spectrum at lower frequency (called “intermediate") before detecting it.
- a heterodyne detector comprises a mixer ("mixer” in English) and a local oscillator ("Local Oscillator” in English) which acts as millimeter reference or submillimetric reference reference.
- RF Radio Frequency
- FI Intermediate Frequency
- heterodyne devices require a millimeter or submillimetric wave source to operate.
- the limit for realizing millimeter or submillimeter wave sources in silicon technology is the cutoff frequency of the components (fT / fmax).
- Harmonic systems are then implemented, they can be of free oscillator type, as described in the publications [4, 5], of the locked oscillator type as described in publication [6] or as a multiplication chain, as described in publication [7].
- FIG. 2 schematically shows the operating principle of an electronic device THz with harmonics according to the publication [5]: it is a question of illuminating in an unfocused way an object 2 with the aid of a source of THz 1 transmission for active imaging in transmission mode.
- the source matrix 11 thus emits millimeter and submillimetric waves that the objective 10 transmits to the illuminated object 2.
- the millimeter and submillimetric waves reemitted by the object 2 are picked up by the objective 30 of the detector (objective) 3 and then detected by the focal plane array 31.
- the source matrix 11 which can be programmed, provides a backlight to the focal plane array 31.
- this publication [5] this has the advantage to allow a video camera, CMOS type to acquire the images in real time without the need for scanning or beam orientation.
- the object of the invention is to meet at least part of this need.
- one aspect of the invention is a method for generating and detecting centimetric, sub-millimetric or millimetric electromagnetic waves, preferably Terahertz, in which a single electronic device is used as a source of generation and as a detector of the waves emitted from the source.
- the subject of the invention is also a system for generating and detecting centimetric, sub-millimeter or millimeter electromagnetic waves, preferably Terahertz, comprising a single electronic device constituting both a source of generation and the detector of waves emitted since source.
- CMOS complementary Metal Oxide Semiconductor
- VLSI very large-scale integration
- HBT Hetero-junction Bipolar Transistor
- the inventor thinks of realizing the generation and detection of centimetric, millimetric or submillimetric waves with the same electronic device.
- the inventor thus overcame a universal prejudice in the field of THz waves according to which in terms of system design, it was imperative to design a source of emission independently of the detector.
- the main advantage of a system according to the invention is the simplicity of implementation including simplified optical assembly, compactness and cost necessarily reduced compared to THz systems according to the state of the art.
- the invention avoids the need to develop two distinct wave processing chains, or to use a diplexer, ie a two-way THz frequency passive telecommunications device, each of which with a frequency filter, without covering the bandwidths, and three doors, one being common to both channels, and the other two being isolated from each other, and respectively terminating each of the channels.
- a diplexer ie a two-way THz frequency passive telecommunications device, each of which with a frequency filter, without covering the bandwidths, and three doors, one being common to both channels, and the other two being isolated from each other, and respectively terminating each of the channels.
- the system according to the invention can operate at ambient temperature, and can be integrated in a multi-pixel configuration of the camera type.
- the emission and detection of the same wave makes it possible to envisage a coherent detection, with the possibility of detecting the amplitude of the wave, but also its phase. If a variable frequency source is used, then it can be used for distance detection (radar), but also for the extraction of the dielectric properties of various materials.
- coherent THz radiation is meant here and in the context of the invention, either a monochromatic radiation of high spectral purity, or a THz pulse whose different spectral components have a well-defined phase relationship which conditions the shape time of the pulse.
- a system according to the invention may have a matrix size that can be modulated in transmission and detection. This allows an imager type integration.
- the system may comprise at least one adjustable-frequency AC power source equipped with an antenna.
- Two adjustable frequency AC power sources with current mirrors can be provided.
- a polarization T connected between the antenna and a low impedance current amplifier which is itself connected to a voltage source, the output of the amplifier defining the detection output of the device,
- a polarization T connected between the antenna and a high impedance current amplifier which is itself connected to a current source, the output of the amplifier defining the detection output of the device,
- a grounded differential antenna connected to a low impedance current amplifier itself connected to a voltage source, the output of the amplifier defining the detection output of the device.
- An earthed differential antenna connected to a high impedance current amplifier itself connected to a current source, the output of the amplifier defining the detection output of the device.
- the advantage of the systems according to the first mode is the integration in circuit with an analog and digital block interface for signal processing.
- the system may comprise at least one frequency source equipped with an antenna.
- two differential frequency sources of the "N-push" type equipped with a differential antenna can be provided.
- the invention is not limited to this type of sources.
- oscillators can "be used, such as linear oscillators as said oscillators Armstrong Hartley, Colpitts, Clapp, Pierce phase shift, Wien bridge, type LC cross-coupled to Robinson or nonlinear or relaxation oscillators, such as a multivibrator, oscillator with a neon lamp, ring oscillator, called Royer or a so-called delay line oscillator.
- the system according to the invention may comprise one or more frequency multiplication chains with a buffer circuit.
- the system may comprise one or more steerable beam antennas by an electrical control circuit. It is thus possible to create images in real time by combining the desired orientation of the beam transmitted / received by the antenna with a generation and detection from the same device.
- the invention also relates to the use of the method or system according to one of the claims described above for imaging, in particular near-field imaging.
- FIG. 1 is a schematic view of a millimeter and submillimetric wave generation and detection system according to the state of the art, with the environment as a source of emission,
- FIG. 2 is a schematic view of another millimeter and submillimetric wave generation and detection system according to the state of the art, with an unfocused illumination on an object,
- FIG. 3 is a schematic view of a first centimeter, millimeter and submillimetric wave generation and detection system according to the invention
- FIG. 4 is a schematic view of a second centimeter, millimeter and submillimeter wave generation and detection system according to the invention.
- FIG. 5 is a schematic view of a third centimeter, millimeter and submillimetric wave generation and detection system according to the invention.
- FIG. 6 is a schematic view of a fourth centimeter, millimeter and submillimetric wave generation and detection system according to the invention.
- FIGS. 7 and 8 are diagrammatic views of centimeter, millimeter and submillimeter wave generation and detection system variants according to the invention, in which the single device is a harmonic oscillator with an antenna and a differential antenna respectively,
- FIG. 9 is a schematic view of a centimetric, millimetric and submillimetric wave generation and detection system according to the invention, with a harmonic oscillator allowing the possible detection of the phase and amplitude variations of the waves,
- FIG. 10 is a schematic view of a variant of a millimeter and submillimeter wave generation and detection system according to the invention, with an improved reading circuit,
- FIGS. 11 and 12 are diagrammatic views of centimeter, millimeter and submillimeter wave generation and detection system variants according to the invention, in which the single device comprises a buffer circuit with an antenna and a differential antenna, respectively. ,
- FIG. 13 is a schematic view of a variant of a centimetric, millimeter and submillimetric wave generation and detection system according to the invention, using a set of steerable beam antennas by an electrical control circuit,
- FIG. 14 schematically shows the reconstruction of an image from an orientable beam transmitted and received from the assembly of FIG. 13,
- FIGS. 15 and 16 are top and side views, respectively, of a system for near-field imaging without a coupler integrating a single transmission / reception device according to the invention.
- All centimeter, millimeter or submillimeter (THz) wave generation and detection systems according to the invention comprise a single device 1, 3 constituting both a source of emission of these waves and the detector of the waves emitted by source.
- the variations of current or voltage of the supply circuit for example are detected with a reading circuit at frequency F1.
- the single device 1, 3 makes it possible to emit THz waves which, on the surface of an object 2 placed at a certain distance, are reemitted, either by being reflected directly or by by being absorbed and reflected, the waves thus re-emitted being detected by the same electronic device.
- Any metallic or dielectric material of object 2 can reflect with or without absorption THz waves.
- the source itself is also used as a detector of the generated wave having been reflected.
- the electronic device 1, 3 according to the invention can then not only detect the amplitude of the wave (power) but also its phase.
- the read circuit is used to detect current (FIGS. 3 and 5) or voltage (FIGS. 4 and 6) variations.
- the single electronic device 1, 3 comprises an adjustable frequency AC power source 4 connected to an antenna 6.
- a polarization T 5 is connected between the antenna 6 and a current amplifier.
- low impedance 8 itself connected to a voltage source 7.
- the output 80 of the amplifier 8 defines the detection output of the device.
- a high impedance current amplifier 8 'and a current source 7' can be provided (FIG. 4).
- a DC rectifier block 12 may be provided at the amplifier input 8 '(FIG. 4).
- a differential antenna 9 with grounding 13 can be provided (FIGS. 5 and 6).
- the source may be a harmonic oscillator 14 equipped with an antenna 6 (FIG. 7).
- This antenna 6 can be integrated or a discrete component, of the Patch type, or having radiation properties through the substrate, or using a lens.
- the harmonic oscillator may consist of differential oscillators 14.1, 14.2 of the "N-push” type equipped with a differential antenna 9 (FIG. 8). As illustrated in FIG. 8, the two oscillators 14.1, 14.2 make it possible to obtain a phase shift of 180 °.
- the waves emitted by the source 1 and then reflected are then retransmitted into the transistor.
- the transistor is either a fundamental mode generator or a Nth harmonic detector reflected at the interface between the common node and the antenna 6 or 9 for example. Since the antenna is a reciprocal device, ie which transmits and receives the waves in the same way, it is then possible to detect amplitude and phase variations of the reflected waves, as illustrated in FIG. 9. Other variants and improvements may be provided without departing from the scope of the invention.
- One of the variants of the invention may consist of the use of fundamental oscillators, or of frequency multiplication chains with a buffer circuit.
- the buffer circuit 16, 16.1, 16.2 can be used as a detection circuit (FIGS. 11 and 12).
- FIG. 13 illustrates an advantageous variant according to which the device according to the invention comprises a set of antennas 6 'with an electromagnetic beam orientable by a suitable electrical control circuit 17. It is possible to provide a single antenna 6' with an orientation beam variable.
- This variant is advantageous because it is possible to create images in real time by combining the desired orientation of the beam transmitted / received by the antenna with a generation and detection from the same device.
- FIG. 14 schematically shows the reconstruction of an image that can be obtained in the reading circuit 18 from a beam with a variable orientation emitted / picked up by the set of antennas 6 '.
- Quality images thus created can be obtained with a very large number of pixels. In other words, with such a device, it is possible to obtain important image sizes with a small transmitter / receiver size.
- a particularly interesting application is imaging, in particular dental imaging, in particular for children's teeth, where the compactness of the system according to the invention allows it to be introduced into the mouth of a child and to ensure both emission and Thz wave detection.
- Figures 15 and 16 illustrate a single device according to the invention 1, 3 used advantageously in near field imaging.
- the imaging system 19 which integrates a single device 1, 3 without antenna allows a coherent detection in near field and without the use of a coupler and a detector as in the systems according to the state of the art in which a detector is a coupler are necessary for the operation of the near-field system.
- the invention described in the present application makes it possible to dispense with these components greatly simplifying near-field imaging.
- a coupler is a device that can only operate on a small frequency bandwidth.
- the unique device 1, 3 of the imaging system uses the reciprocity of the transmission lines 20 to and from the sensitive area 21 of the evanescent wave fields 22.
- the device 1, 3 used in a near-field system can be integrated in both pixels and multi-pixels to create an imager-type device.
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1554580A FR3036532B1 (fr) | 2015-05-21 | 2015-05-21 | Procede et systeme de generation et de detection d'ondes electromagnetiques centimetriques, millimetriques ou submillimetriques, notamment terahertz |
PCT/EP2016/061399 WO2016185010A1 (fr) | 2015-05-21 | 2016-05-20 | Procede et systeme de generation et de detection d'ondes electromagnetiques centimetriques, millimetriques ou submillimetriques, notamment terahertz |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3298424A1 true EP3298424A1 (fr) | 2018-03-28 |
Family
ID=54329626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16724404.5A Withdrawn EP3298424A1 (fr) | 2015-05-21 | 2016-05-20 | Procédé et système de génération et de détection d'ondes électromagnétiques centimétriques, millimétriques ou submillimétriques, notamment térahertz |
Country Status (4)
Country | Link |
---|---|
US (1) | US20180128900A1 (fr) |
EP (1) | EP3298424A1 (fr) |
FR (1) | FR3036532B1 (fr) |
WO (1) | WO2016185010A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11543232B2 (en) * | 2017-01-05 | 2023-01-03 | Dental Imaging Technologies Corporation | 3D intraoral camera using frequency modulation |
DE102018200647A1 (de) * | 2018-01-16 | 2019-07-18 | Vega Grieshaber Kg | Radar-transceiver-chip |
FR3077641B1 (fr) | 2018-02-07 | 2020-02-21 | TiHive | Systeme d'imagerie terahertz a reflexion |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6870517B1 (en) * | 2003-08-27 | 2005-03-22 | Theodore R. Anderson | Configurable arrays for steerable antennas and wireless network incorporating the steerable antennas |
US6587072B1 (en) * | 2002-03-22 | 2003-07-01 | M/A-Com, Inc. | Pulse radar detection system |
GB0603193D0 (en) * | 2006-02-16 | 2006-03-29 | Thruvision Ltd | Detection method and apparatus |
DE102007062562B4 (de) | 2007-12-22 | 2009-10-01 | Johann Wolfgang Goethe-Universität Frankfurt am Main | Monolithisch integrierter Antennen- und Empfängerschaltkreis für die Erfassung von Terahertz-Wellen |
EP2315051A1 (fr) * | 2009-10-22 | 2011-04-27 | Toyota Motor Europe NV | Radar de sous-millimètre utilisant des informations de phase |
DE102011076840B4 (de) | 2011-05-31 | 2013-08-01 | Johann Wolfgang Goethe-Universität Frankfurt am Main | Monolithisch integrierter Antennen- und Empfängerschaltkreis und THz-Heterodynempfänger und bildgebendes System, diesen aufweisend, und Verwendung dieser zur Erfassung elektromagnetischer Strahlung im THz-Frequenzbereich |
CN202693789U (zh) * | 2012-06-27 | 2013-01-23 | 电子科技大学 | 一种THz雷达的收发前端 |
FR2995475A1 (fr) | 2012-09-12 | 2014-03-14 | St Microelectronics Sa | Oscillateur a haute frequence |
US8907284B2 (en) * | 2012-12-03 | 2014-12-09 | Stmicroelectronics S.A. | Terahertz imager with global reset |
-
2015
- 2015-05-21 FR FR1554580A patent/FR3036532B1/fr active Active
-
2016
- 2016-05-20 EP EP16724404.5A patent/EP3298424A1/fr not_active Withdrawn
- 2016-05-20 WO PCT/EP2016/061399 patent/WO2016185010A1/fr active Application Filing
- 2016-05-20 US US15/575,893 patent/US20180128900A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
FR3036532B1 (fr) | 2018-07-27 |
WO2016185010A1 (fr) | 2016-11-24 |
US20180128900A1 (en) | 2018-05-10 |
FR3036532A1 (fr) | 2016-11-25 |
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