WO2004038854A2 - Sub-millimetre wavelength camera - Google Patents
Sub-millimetre wavelength camera Download PDFInfo
- Publication number
- WO2004038854A2 WO2004038854A2 PCT/EP2003/013342 EP0313342W WO2004038854A2 WO 2004038854 A2 WO2004038854 A2 WO 2004038854A2 EP 0313342 W EP0313342 W EP 0313342W WO 2004038854 A2 WO2004038854 A2 WO 2004038854A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mask
- antenna
- imaging device
- radiation
- etch
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0208—Corrugated horns
- H01Q13/0225—Corrugated horns of non-circular cross-section
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/064—Two dimensional planar arrays using horn or slot aerials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
Definitions
- the present invention relates to a sub-millimetre wavelength imaging device and particularly but not exclusively to an ambient temperature camera using either single or multiple heterodyne detectors.
- the terahertz electromagnetic spectrum extends over a range of frequencies where radio waves and optical waves merge and consequently the detection of terahertz radiation utilises a mixture of optical and radio wave technology.
- the cost of terahertz imaging systems has generally been prohibitive.
- terahertz frequencies have long been recognised as potentially extremely useful frequencies for imaging purposes as many materials which are opaque in the visible region of the spectrum become transparent to terahertz waves.
- imagers at terahertz frequencies are suitable for imaging the Earth's surface as most weather conditions such as fog are transparent to terahertz waves.
- This also makes a terahertz imager a potentially useful imaging device when flying a plane or driving a land vehicle in bad weather, for example.
- the transparency of many materials to terahertz frequencies has also been identified as a useful tool for security purposes. Most notably clothing becomes transparent at these frequencies enabling hidden weapons worn under clothing to be seen clearly and for spotting people hidden in canvas sided trucks and lorries.
- terahertz radiation has also been identified as a potentially powerful diagnostic tool for example in the early detection of skin cancers.
- applications of terahertz imaging in the chemical and food industries have been identified, for example in the detection of one or more constituents each having different transmissive/reflective properties at these frequencies.
- the present invention therefore seeks to provide an imaging device capable of detecting low power passive terahertz radiation and of operating at ambient temperatures, in sub-millimeter (i.e. terahertz) and/or millimetre wavelength range.
- the present invention provides a imaging device to be used with millimeter and/or sub-millimeter radiation comprising at least a pair of substrates, at least one of which is patterned on at least one surface with a patterning defining at least one radiation receiver, each radiation detector comprising : an antenna adapted to receive millimetre and/or sub- millimeter electromagnetic radiation, a mixer channel coupled to said antenna and in communication with a via extending through a substrate for connection to a signal output, a mixer comprising filters being mounted in the mixer channel for extracting an intermediate frequency signal in dependence upon said radiation received by the antenna. a waveguide structure coupled to said mixer and having a local oscillator signal input for connection to a local oscillator.
- the pair of substrates have patterning defining in combination a plurality of antennae with respective mixing channels and local oscillator waveguide structures.
- one of the pair of substrates may be patterned on opposed surfaces and the imaging device may further comprise a third substrate patterned on one of its surfaces such that the three substrates co-operably define by means of their patterning two rows of antennae and respective mixing channels and local oscillator waveguide structures.
- the patterning of the substrates describe the mixing channel intersecting the local oscillator waveguide structure at an acute angle.
- the imaging device has a plurality of imaging pixels for increased imaging resolution and is capable of generating multiple colour images.
- the present invention also provides a method of fabricating a three dimensional structure in a substrate comprising applying to a surface of the substrate a plurality of differently patterned masks directly on top of one another and thereafter etching through a mask and then removing the mask before repeating the process for each of the remaining masks.
- the invention relates to a process for making a substrate for an imaging device, comprising the following steps: providing on a surface of a substrate a first, a second and a third patterned masks, said first mask having a first pattern corresponding to a first region of each radiation detector with the highest etch depth, said second mask having a second pattern corresponding to said first region and to a second region of each radiation detector with an intermediate etch depth, and said third mask having a third pattern corresponding to said first and second regions and to a third region of each radiation detectors with the shallowest etch depth. performing a first etch through the first pattern of the first mask at a first depth that is substantially equal to the difference between the highest etch depth and the intermediate etch depth.
- Figure 1 is a schematic diagram of a two-colour terahertz camera in accordance with the present invention
- Figure 2 is an enlarged view of the detector of the terahertz camera of Figure 1 ;
- Figure 3 is a photographic plan view of the waveguide structure employed in the terahertz camera of Figure 1 ;
- Figure 4 is a photographic perspective view of the waveguide structure of Figure 2 illustrating the double-sided etching of the waveguide structure;
- Figure 5 is a line drawing of the waveguide structure of Figure 2; and
- Figures 6a, 6b, 6c and 6d illustrates the fabrication steps for manufacture of the waveguide structure of Figures 2 and 3.
- the terahertz camera 1 of Figure 1 comprises an X-Y stage 2 on which are mounted the scanning optics 3 and the terahertz detector 4 and a processor 5.
- the arrangement of the scanning optics 3 is conventional and comprises a plurality of mirrors 6, 7, e.g. planar or parabolic or hyperbolic.
- Each mirror 6, 7 is movably mounted on respective orthogonal tracks 8, 9 and arranged to direct incident radiation from a specimen on a fixed specimen support (not illustrated) to the terahertz detector 4. Relative movement of the two mirrors 6, 7 on their tracks thus enables the specimen to be scanned in orthogonal directions.
- the scanning may be effected otherwise, e.g. by means of rotating or flipping mirrors.
- the mirrors 6, 7 should exhibit a high reflectivity to the particular radiation in order to minimise losses especially where passive radiation of a specimen is being imaged as the power of such radiation can be of the order of 10 "12 W.
- movement of the two mirrors 6, 7 is controlled by separate linear motors 10, 11 , which may be stepper motors to ensure precise positioning of the mirrors in the X-Y plane.
- Each of the motors 10, 11 includes a data port 12 that is connected to the processor 5 and feeds data on the instantaneous positions of the mirrors, and also receives control signals from the computer.
- flipping mirrors or else may be use for scanning.
- the terahertz detector 4 is coupled to an intermediate frequency IF electronic circuit 28 and to a baseband electronic circuit 29 which has an output data port 13 in communication with the controller 5.
- the controller 5 which is preferably a conventional desktop or portable computer, receives and synchronises the image data from the detector 4 and the positional data from the drivers of the motors 10, 11 and builds from the data an image of the scanned specimen. Conventional data acquisition software may be used for this purpose. This image may be displayed on a screen and/or output to a printer as well as being stored as a conventional file.
- the terahertz detector 4 is illustrated in detail. Its components are fabricated in or are mounted on a semi-conductor, e.g. silicon structure an example of which is illustrated in Figures 3 and 4.
- the components of the detector 4 comprise an antenna comprised of a horn antenna 14 and a waveguide 15, a mixer 16 and a local oscillator feed 17.
- the antenna selectively receives a predetermined frequency of electromagnetic radiation ("signal input"), the waveguide 15 being in communication with a mixer 16 which is also in communication with a local oscillator feed 17 comprised of a waveguide structure and having a signal input for connection to a local oscillator.
- the mixer 16 heterodyns the signal input and the local oscillator input so as to generate an intermediate frequency (“IF”) output.
- IF intermediate frequency
- the mixer 16 includes on a microstrip a first pass band filter 18 for isolating the local oscillator input from the waveguide 15 and a second pass band filter 19 which acts as a back stop to allow through only the pre-selected IF output.
- the mixer 16 is arranged so as to be substantially orthogonal to the waveguide 15.
- the intersection of the axis of the mixer 16 with the axis of the local oscillator feed 17 is not orthogonal and instead describes an acute angle.
- This arrangement of the local oscillator feed 17 at an acute angle to the mixer 16 reduces the back short length over a wider band width and so improves the bandwidth of the mixer transition in comparison to the more conventional 90° arrangement.
- this arrangement of the local oscillator input 17 and the mixer 16 provides an added benefit particular to imaging systems at these frequencies. It reduces the space occupied by each detector, thereby allowing them to be placed closer and a larger number of them, improving the resolution of the camera.
- the illustrated detector 4 is comprised for example of sixteen separate horn antenna providing a two-colour, eight pixel array.
- the size of the aperture of the detector 4 required to generate images at terahertz frequencies is such that the spacing between the individual horn antennae is limited to approximately 2.5 mm in the illustrated example. This spacing is not sufficient to enable the more conventional arrangement of the mixer at 90° to the local oscillator feed and so the detector aperture presents a limit to the number of antenna.
- the axis of the local oscillator input feed 17 so that it is substantially aligned with the axis of the antenna horn 14 and arranging the intersection of the axis of the mixer and the local oscillator feed 17 at 45° the number of detectors may be increased in the same area thereby improving the resolution of the detector.
- the detector 4 is fabricated from a semi conductor, e.g. silicon structure consisting of three separate etched layers: a top layer 23, a middle layer 20 and a lower layer 24 which are illustrated in Figure 1.
- Figures 3 and 4 show the middle layer 20 which is etched on both its upper surface 21 and its lower surface 22.
- the upper layer 23 and the lower layer 24 are each etched on only one side and the pattern of the etch in each case is a mirror image of the etch pattern of the respective upper surface 21 and lower surface 22 of the middle layer 20.
- the etch pattern whilst for each individual layer of silicon the etch pattern is open, when the three layers are brought together, the etch patterns of their surfaces match to define waveguide structures extending along the interface of the surfaces.
- Co- operating location holes and pins 25 are also provided in the surfaces of each of the layers to ensure accurate positioning of the layers with respect to one another.
- each horn antenna 14 is individually connected to its respective waveguide 15 and mixer 16.
- Individual local oscillator feeds 17 connect with respective mixers 16 but are themselves interconnected with one another upstream from the mixers to a single common local oscillator input 26.
- the dimensions of the etch pattern defining the waveguide structure are important to the functioning of the detector 4 and these dimensions can be determined though conventional modelling techniques.
- the detector illustrated in the figures is a two-colour detector with one of the set of eight antenna detecting a first terahertz frequency and the parallel second set of eight antenna detecting a second, different, terahertz frequency. This in turn requires the dimensions of the etch pattern for each of the two sets of eight antenna to differ slightly depending upon the frequencies of the input signal and the local oscillator signal. Moreover, to maximise structural strength, it can be seen in Figure 4 that each row of horn antennae are offset from one another. The following measurements in relation to Figure 5 are therefore provided solely to illustrate typical dimensions.
- the IF output for each antenna passes to an outer surface of the silicon layered structure along a wire extending through a respective via 27.
- a series of eight IF output vias extend through the body of the top silicon layer 23 and a corresponding series of eight IF output vias extend through the body of the bottom silicon layer 24. From there the IF outputs pass through a conventional series of 2 stage amplifiers 28 to an integrated detector 29 and from there to the data input port of the processor 5.
- a local oscillator signal of 245 GHz may be used to extracted an IF signal at 5 GHZ. It is to be understood that the frequencies quoted above are one illustration only and that conventional heterodyne theory can be employed to identify other suitable local oscillator frequencies and IF frequencies.
- the antennae may be fabricated in photonic bandgap material. This would prevent signal leakage between adjacent antennae and could provide an alternative structure for the mixer and for the conduction of both the signal input, the local oscillator LO signal and the intermediate frequency IF output.
- a silicon substrate 30 is illustrated on the upper surface of which is provided a series of three masks 31 , 32 and 33 each laid on top of the next and in direct contact with the adjacent mask.
- the first uppermost mask 31 is a positive resist or a metal mask.
- a second negative resist mask 32 such as SU8 or other suitable amide mask material.
- Beneath the second mask is a third mask 33 preferably of silicon dioxide or aluminium nitride.
- the first mask 31 defines the deepest structures in the substrate and protects other areas from early etching.
- the second mask exposes, in addition to the deepest etch regions, intermediate depth etch regions whilst protecting those regions of the substrate that require the shallowest etch.
- the third and final mask exposes all areas previously etched as well as those areas requiring the shallowest etch. It is worth noting that the masks are not necessarily laid one on top of the next, but may be brought separately.
- the deepest etches are patterned for the horn antennas 14 and the waveguides 15 , the intermediate etch depth is required for the majority of the local oscillator waveguide structure and then the shallowest etching is required for the mixer channel.
- the first etch is performed using the positive resist mask 31.
- the etch is continued to an etch depth equivalent to the difference between the desired final depth of the deepest structures and the final depth of the intermediate structures.
- the positive resist mask 31 is then removed ( Figure 6b) using a normal stripper such as an amine type stripper which does not affect the underlying negative resist mask 32.
- the next etch stage is then performed through the SU8 mask 32 to a depth equivalent to the difference between the desired final depth of the intermediate structures and the shallowest structures. As the etched pattern from the first etch stage remain exposed this pattern is again etched and the pattern driven deeper into the substrate.
- the second mask 32 is removed ( Figure 6c) which does not affect the underlying third mask 33 and then the third and final etch stage can be performed during which the shallowest features of the pattern are etched and the existing pattern again etched more deeply into the substrate 30 to its final depth.
- the third mask 33 is then removed ( Figure 6d). This procedure differs from then conventional procedure as it involves the use of a plurality of different masks each directly overlying an adjacent mask and an etching procedure in which new masks are not applied to the surface of the wafer in between etching steps.
- the silicon is metallised in the desired regions (waveguides and vias)
- the specimen may be mounted on an X-Y stage and moved so that different areas of the specimen are scanned in turn.
- scanning may be performed wholly electronically through adjustment of the phase of the local oscillator input.
- a phase shifter may be introduced into the individual local oscillator feeds 17.
- the phase shifter is comprised of a waveguide which has a slab of high resistivity intrinsic silicon mounted on the inside of one wall of the waveguide. The slab of silicon is exposed to incident light which causes the silicon to exhibit resistive and/or metallic properties. The power of the incident light determines the depth to which the changes in the silicon penetrate, changing the dimensions of the waveguide and thereby its dispersion characteristics.
- the imaging device described herein is suitable for the detection of passive millimetre and sub-millimetre electromagnetic radiation and in this respect is particularly convenient in view of its compact size, potential for portability and its ability to perform at room temperature.
- immediate applications for the imaging device are envisaged in both airborne and land vehicles, in security systems, in the chemical and food industries and in medical diagnostics.
- the scope of applications is not limited to those identified above and because of the low power requirements of the imaging system, it is particularly suited for example to imaging from space.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Filters (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Waveguides (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
- Ceramic Capacitors (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/532,736 US7502605B2 (en) | 2002-10-25 | 2003-10-27 | Sub-millimeter wavelength camera |
AU2003285345A AU2003285345A1 (en) | 2002-10-25 | 2003-10-27 | Sub-millimetre wavelength camera |
DK03778333T DK1554780T3 (en) | 2002-10-25 | 2003-10-27 | Submillimeter wavelength camera |
JP2004546033A JP4516426B2 (en) | 2002-10-25 | 2003-10-27 | Submillimeter wave camera |
CN200380106120.XA CN1726618B (en) | 2002-10-25 | 2003-10-27 | Sub-millimetre wavelength camera |
EP03778333A EP1554780B1 (en) | 2002-10-25 | 2003-10-27 | Sub-millimeter wavelength camera |
CA002503556A CA2503556A1 (en) | 2002-10-25 | 2003-10-27 | Sub-millimetre wavelength camera |
DE60313352T DE60313352T2 (en) | 2002-10-25 | 2003-10-27 | CAMERA FOR SUBMILLIMETER WAVES |
HK05111609A HK1077127A1 (en) | 2002-10-25 | 2005-12-15 | Sub-millimetre wavelength camera |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0224912.6A GB0224912D0 (en) | 2002-10-25 | 2002-10-25 | Sub-millimetre wavelength camera |
GB0224912.6 | 2002-10-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004038854A2 true WO2004038854A2 (en) | 2004-05-06 |
WO2004038854A3 WO2004038854A3 (en) | 2004-06-17 |
Family
ID=9946612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/013342 WO2004038854A2 (en) | 2002-10-25 | 2003-10-27 | Sub-millimetre wavelength camera |
Country Status (14)
Country | Link |
---|---|
US (1) | US7502605B2 (en) |
EP (1) | EP1554780B1 (en) |
JP (1) | JP4516426B2 (en) |
KR (1) | KR100989846B1 (en) |
CN (1) | CN1726618B (en) |
AT (1) | ATE360271T1 (en) |
AU (1) | AU2003285345A1 (en) |
CA (1) | CA2503556A1 (en) |
DE (1) | DE60313352T2 (en) |
DK (1) | DK1554780T3 (en) |
ES (1) | ES2285216T3 (en) |
GB (1) | GB0224912D0 (en) |
HK (1) | HK1077127A1 (en) |
WO (1) | WO2004038854A2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006129113A1 (en) * | 2005-06-02 | 2006-12-07 | Thruvision Limited | Scanning method and apparatus |
WO2006126186A3 (en) * | 2005-05-26 | 2007-01-18 | Yissum Res Dev Co | Method and system for determination of physiological conditions and emotional states |
WO2007093814A1 (en) * | 2006-02-16 | 2007-08-23 | Thruvision Limited | Detection method and apparatus |
WO2007122413A1 (en) | 2006-04-25 | 2007-11-01 | Thruvision Limited | Feedhorn assembly and method of fabrication thereof |
DE102007007378B3 (en) * | 2007-02-12 | 2008-04-17 | Genesis Adaptive Systeme Deutschland Gmbh | Terahertz measuring arrangement, has measuring device provided subsequent to optical amplifier in object optical path with terahertz-detector, and wave front sensor and switching unit supplying radiation to terahertz-detector |
DE102007011704A1 (en) | 2007-03-08 | 2008-09-11 | Genesis Adaptive Systeme Deutschland Gmbh | Measuring device for mapping object area with terahertz radiation, has reference object arranged in object area, in which reference object is radiated by reference radiation |
WO2009013681A1 (en) * | 2007-07-25 | 2009-01-29 | Koninklijke Philips Electronics N.V. | Integrated all-electronic terahertz imaging/spectroscopy device |
US7873329B2 (en) | 2006-04-25 | 2011-01-18 | ThruVision Systems Limited | Transceiver having mixer/filter within receiving/transmitting cavity |
WO2013117920A3 (en) * | 2012-02-06 | 2014-01-30 | Digital Barriers Services Limited | Multifrequency imaging method and apparatus |
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---|---|---|---|---|
US7521680B1 (en) * | 2003-12-05 | 2009-04-21 | Eric Dean Rosenthal | Electromagnetic spectral-based imaging devices and methods |
US7764324B2 (en) * | 2007-01-30 | 2010-07-27 | Radiabeam Technologies, Llc | Terahertz camera |
US7888646B2 (en) * | 2007-06-04 | 2011-02-15 | Morpho Detection, Inc. | System and method for detecting contraband |
US7745792B2 (en) * | 2007-08-15 | 2010-06-29 | Morpho Detection, Inc. | Terahertz detectors for use in terahertz inspection or imaging systems |
JP5144175B2 (en) * | 2007-08-31 | 2013-02-13 | キヤノン株式会社 | Inspection apparatus and inspection method using electromagnetic waves |
US9157852B2 (en) | 2010-09-17 | 2015-10-13 | Raytheon Company | Explosive material detection |
WO2012094051A2 (en) | 2010-10-26 | 2012-07-12 | California Institute Of Technology | Travelling wave distributed active antenna radiator structures, high frequency power generation and quasi-optical filtering |
US9268017B2 (en) | 2011-07-29 | 2016-02-23 | International Business Machines Corporation | Near-field millimeter wave imaging |
WO2013082622A2 (en) | 2011-12-01 | 2013-06-06 | California Institute Of Technology | Integrated teraherts imaging systems |
WO2014099822A2 (en) | 2012-12-17 | 2014-06-26 | Brady Patrick K | System and method for identifying materials using a thz spectral fingerprint in a media with high water content |
US9494464B2 (en) * | 2013-02-20 | 2016-11-15 | Battelle Energy Alliance, Llc | Terahertz imaging devices and systems, and related methods, for detection of materials |
CN106603015A (en) * | 2016-12-29 | 2017-04-26 | 中国科学院国家空间科学中心 | Terahertz mixer realizing short baseline measurement and front-end of receiver |
US20200081433A1 (en) * | 2018-09-12 | 2020-03-12 | International Business Machines Corporation | Self-Driving Security Checking and Boarding Vehicle System |
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WO1998042486A1 (en) * | 1997-03-25 | 1998-10-01 | The University Of Virginia Patent Foundation | Method of fabricating a millimeter or submillimeter wavelength component |
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US6323818B1 (en) * | 1997-03-25 | 2001-11-27 | University Of Virginia Patent Foundation | Integration of hollow waveguides, channels and horns by lithographic and etching techniques |
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- 2002-10-25 GB GBGB0224912.6A patent/GB0224912D0/en not_active Ceased
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2003
- 2003-10-27 EP EP03778333A patent/EP1554780B1/en not_active Expired - Lifetime
- 2003-10-27 AU AU2003285345A patent/AU2003285345A1/en not_active Abandoned
- 2003-10-27 CA CA002503556A patent/CA2503556A1/en not_active Abandoned
- 2003-10-27 US US10/532,736 patent/US7502605B2/en active Active
- 2003-10-27 CN CN200380106120.XA patent/CN1726618B/en not_active Expired - Lifetime
- 2003-10-27 WO PCT/EP2003/013342 patent/WO2004038854A2/en active IP Right Grant
- 2003-10-27 DE DE60313352T patent/DE60313352T2/en not_active Expired - Lifetime
- 2003-10-27 AT AT03778333T patent/ATE360271T1/en not_active IP Right Cessation
- 2003-10-27 JP JP2004546033A patent/JP4516426B2/en not_active Expired - Lifetime
- 2003-10-27 KR KR1020057007155A patent/KR100989846B1/en active IP Right Grant
- 2003-10-27 DK DK03778333T patent/DK1554780T3/en active
- 2003-10-27 ES ES03778333T patent/ES2285216T3/en not_active Expired - Lifetime
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- 2005-12-15 HK HK05111609A patent/HK1077127A1/en not_active IP Right Cessation
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MANN C M ET AL: "Microfabrication of 3D terahertz circuitry" 2003 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST.(IMS 2003). PHILADELPHIA, PA, JUNE 8 - 13, 2003, IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM, NEW YORK, NY: IEEE, US, vol. 3 OF 3, 8 June 2003 (2003-06-08), pages 739-742, XP010645013 ISBN: 0-7803-7695-1 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006126186A3 (en) * | 2005-05-26 | 2007-01-18 | Yissum Res Dev Co | Method and system for determination of physiological conditions and emotional states |
US8311616B2 (en) | 2005-05-26 | 2012-11-13 | Yissum Research Development Company Of The Hebrew University Of Jerusalem | Method and system for determination of physiological conditions and emotional states of a living organism |
US8063366B2 (en) | 2005-06-02 | 2011-11-22 | ThruVision Systems Limited | Scanning method and apparatus |
WO2006129113A1 (en) * | 2005-06-02 | 2006-12-07 | Thruvision Limited | Scanning method and apparatus |
WO2007093814A1 (en) * | 2006-02-16 | 2007-08-23 | Thruvision Limited | Detection method and apparatus |
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Also Published As
Publication number | Publication date |
---|---|
DE60313352T2 (en) | 2008-01-03 |
CN1726618A (en) | 2006-01-25 |
US7502605B2 (en) | 2009-03-10 |
KR20050088405A (en) | 2005-09-06 |
HK1077127A1 (en) | 2006-02-03 |
GB0224912D0 (en) | 2002-12-04 |
JP4516426B2 (en) | 2010-08-04 |
EP1554780B1 (en) | 2007-04-18 |
KR100989846B1 (en) | 2010-10-29 |
DK1554780T3 (en) | 2007-09-17 |
AU2003285345A8 (en) | 2004-05-13 |
WO2004038854A3 (en) | 2004-06-17 |
ES2285216T3 (en) | 2007-11-16 |
DE60313352D1 (en) | 2007-05-31 |
JP2006505157A (en) | 2006-02-09 |
AU2003285345A1 (en) | 2004-05-13 |
EP1554780A2 (en) | 2005-07-20 |
CA2503556A1 (en) | 2004-05-06 |
CN1726618B (en) | 2011-07-06 |
US20060111619A1 (en) | 2006-05-25 |
ATE360271T1 (en) | 2007-05-15 |
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