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公开(公告)号：EP2347281A1
公开(公告)日：2011-07-27
申请号：EP09818119.1
申请日：2009-10-02
发明人： BISHOP, Grant , LOVBERG, John , KOLINKO, Vladimir
IPC分类号： G01S13/00
CPC分类号： G01S13/89 , G01S13/345 , G01S13/426 , G01S13/867 , G01S2013/916 , H01Q19/175 , H01Q21/0043
摘要： A short range millimeter wave imaging radar system. The system includes electronics adapted to produce millimeter wave radiation scanned over a frequency range of a few gigahertz. The scanned millimeter wave radiation is broadcast through a frequency scanned transmit antenna to produce a narrow transmit beam in a first scanned direction (such as the vertical direction) corresponding to the scanned millimeter wave frequencies. The transmit antenna is scanned to transmit beam in a second direction perpendicular to the first scanned direction (such as the horizontal or the azimuthal direction) so as to define a two-dimensional field of view. Reflected millimeter wave radiation is collected in a receive frequency scanned antenna co- located (or approximately co-located) with the transmit antenna and adapted to produce a narrow receive beam approximately co-directed in the same directions as the transmitted beam in approximately the same field of view. Computer processor equipment compares the intensity of the receive millimeter radar signals for a predetermined set of ranges and known directions of the transmit and receive beams as a function of time to produce a radar image of at least a desired portion of the field of view. In preferred embodiment the invention is mounted on a truck and adapted as a FOD finder system to detect and locate FOD on airport surfaces.
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公开(公告)号：EP1456964B1
公开(公告)日：2010-09-15
申请号：EP02805211.6
申请日：2002-12-18
CPC分类号： H04B10/1123 , H04B1/52
摘要： A high data rate communication system operating at frequencies greater than 70 MHz and at data rates of about 1.25 Gbps or greater. Preferred embodiments include modulators with a resonant LC circuit including a diode which is back-biased for 'off' (i.e., no transmit) and forward biased for 'on' (or transmit). The modulator is a part of high performance transceivers for wireless, millimeter wave communications links. A preferred embodiment provides a communication link of more than eight miles which operates within the 71 to 76 GHz portion of the millimeter spectrum and provides data transmission rates of 1.25 Gbps with bit error rates of less than 10-10. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same spectrum. In a preferred embodiment the first and second spectral ranges are 71.8+/-0.63 GHz and 73.8+/-0.63 GHz and the half power beam width is about 0.2 degrees or less. Preferably, a backup transceiver set is provided which would take over the link in the event of very bad weather conditions. In other embodiments especially useful for mobile applications at least one of the transceivers include a GPS locator.
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公开(公告)号：EP1875478A1
公开(公告)日：2008-01-09
申请号：EP06748350.3
申请日：2006-03-09
发明人： MARTIN, Peter , SPIVEY, Brett
CPC分类号： A61B6/4441 , A61B6/025 , A61B6/4405 , A61B6/466 , A61B6/587 , A61B6/588 , G01N23/044 , G01N2223/419
摘要： Method and device for digital x-ray tomosynthesis. Tomographic and/or three-dimensional images of an object are obtained with an x-ray source and a digital x-ray image sensor. The source, object and sensor are positioned relative to each other and attenuation data is obtained for a large number of rays of x-radiation through the object. A special algorithm is provided to convert the data into images. To calculate the images the algorithm uses iterative processes with a least squares type technique but with generalized (as opposed to specific) functions. The algorithm solves for the functions which are the images. Preferred embodiments include a system having an x-ray point source with a cone of diverging x-rays, a two-dimensional digital x-ray image sensor, two linear translation stages to independently move both the x-ray source and the digital x-ray image sensor, two rotation mechanisms to rotate the two linear translation stages, a microprocessor to control the data acquisition, and a computer programmed with a special algorithm to calculate the tomographic images. A plurality of sets of digital data (representing x-ray algorithm images of an object) are acquired by the digital x-ray image sensor, with the x-ray source and the digital x-ray image sensor located at different positions and angles relative to the object. The digital data representing the x-ray attenuation images is stored in the computer. Special mathematical algorithms then compute multiple images of the object using the acquired digital data. These images could include multiple tomographic images, a three-dimensional image, or a multiple three-dimensional images.
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公开(公告)号：EP1654560A2
公开(公告)日：2006-05-10
申请号：EP04786483.0
申请日：2004-08-10
CPC分类号： G01S13/887 , G01V8/005 , H01Q3/04 , H01Q3/22 , H01Q3/2682 , H01Q21/0043 , H01Q25/008
摘要： A millimeter wave concealed weapons and contraband detection system. The preferred millimeter wave imaging equipment includes at least one millimeter wave frequency scanning antenna for collecting frequency dependent beams of millimeter wave radiation from a narrow one-dimensional field of view. The collected radiation is amplified at the collected frequencies and the amplified signals are separated into frequency dependent bins with a tapped-delay beam-former. These bins are then sampled to produce a one-dimensional image of the antenna field of view. A two dimensional image of a target may be obtained by moving the target across the field of view of the scanning antenna or by moving the antenna in order to scan its line of focus over the target. In preferred embodiments the millimeter wave imager is combined with an active eddy current type metal detector to provide a hybrid system providing important advantages over prior art security systems. Preferred embodiments include hybrid portal systems and hybrid handheld systems.
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公开(公告)号：EP1456964A2
公开(公告)日：2004-09-15
申请号：EP02805211.6
申请日：2002-12-18
CPC分类号： H04B10/1123 , H04B1/52
摘要： A high data rate communication system operating at frequencies greater than 70 MHz and at data rates of about 1.25 Gbps or greater. Preferred embodiments include modulators with a resonant LC circuit including a diode which is back-biased for 'off' (i.e., no transmit) and forward biased for 'on' (or transmit). The modulator is a part of high performance transceivers for wireless, millimeter wave communications links. A preferred embodiment provides a communication link of more than eight miles which operates within the 71 to 76 GHz portion of the millimeter spectrum and provides data transmission rates of 1.25 Gbps with bit error rates of less than 10-10. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same spectrum. In a preferred embodiment the first and second spectral ranges are 71.8+/-0.63 GHz and 73.8+/-0.63 GHz and the half power beam width is about 0.2 degrees or less. Preferably, a backup transceiver set is provided which would take over the link in the event of very bad weather conditions. In other embodiments especially useful for mobile applications at least one of the transceivers include a GPS locator.
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公开(公告)号：EP2153258B1
公开(公告)日：2016-01-06
申请号：EP08742270.5
申请日：2008-03-25
发明人： KOREVAAR, Eric , TAKETOMI, Yoshinoa , BARRETT, Todd , TIGLE, Hus , LAST, Matthew , DIRUSCIO, Larry , DAVIS, Edward
IPC分类号： G02B6/26
CPC分类号： G02B6/359 , G02B6/3512 , G02B6/3542 , G02B6/3556 , G02B6/356 , G02B6/357 , G02B6/3582 , G02B6/3584
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公开(公告)号：EP2153258A1
公开(公告)日：2010-02-17
申请号：EP08742270.5
申请日：2008-03-25
发明人： KOREVAAR, Eric , TAKETOMI, Yoshinoa , BARRETT, Todd , TIGLE, Hus , LAST, Matthew , DIRUSCIO, Larry , DAVIS, Edward
IPC分类号： G02B6/26
CPC分类号： G02B6/359 , G02B6/3512 , G02B6/3542 , G02B6/3556 , G02B6/356 , G02B6/357 , G02B6/3582 , G02B6/3584
摘要： The present invention provides an all optical cross connect switch utilizing two-axis MEMS mirrors for cross connecting optical fibers in a first set of optical fibers to optical fibers in a second set of optical fibers. The optical fibers in the first and second sets of optical fibers are precisely positioned in a first fiber-microlens positioning array to define a first set of parallel collimated cross-connect communication beam paths, with each collimated cross-connect communication beam path connecting an optical fiber in the first set of optical fibers with a MEMS mirror in a first MEMS mirror array. Alignment beams are added to and aligned co- axially with each of the first and second sets of parallel collimated cross-connect communication beams. Two beam direction sensor units are positioned to detect each alignment beam in the first and second sets of alignment beams transmitted through the dichroic mirror and a MEMS control system controls the positions of the MEMS mirrors to connect optical fibers in the first set of optical fibers to any of the optical fibers in the second set of optical fibers.
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公开(公告)号：EP1436904B1
公开(公告)日：2008-05-21
申请号：EP02778258.0
申请日：2002-09-13
CPC分类号： H04B1/3805 , H01Q1/125 , H01Q19/10 , H04B7/0408 , Y02D70/1222 , Y02D70/40 , Y02D70/444
摘要： A wireless cellular communication system in which groups of cellular base stations communicate with a central office via a narrow-band millimeter wave trunk line. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same millimeter wave spectrum. In a preferred embodiment the trunk line communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A large number of base stations are each allocated a few MHz portion of a 900 MHz bandwidth of the millimeter wave trunk line. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. Antennas are described to maintain beam directional stability to less than one-half the half-power beam width. In a preferred embodiment the first and second spectral ranges are 92.3-93.2 GHz and 94.1-95.0 GHz and the half power beam width is about 0.36 degrees or less. Thus, in this system the low frequency band width is efficiently utilized over and over again by dividing a territory into small cells and using low power antenna. And a higher frequency bandwidth is efficiently utilized over and over again by using transmitting antennae that are designed to produce very narrow beams directed at receiving antennae. In a preferred embodiment cellular base stations are prepackaged for easy quick installation at convenient locations such as the tops of commercial buildings.
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公开(公告)号：EP1391058A1
公开(公告)日：2004-02-25
申请号：EP02766896.1
申请日：2002-05-01
CPC分类号： H04B10/1123 , G01V8/005 , H01Q1/125 , H01Q3/2682 , H01Q19/10 , H04B1/3805 , H04B7/0408 , H04B10/1149 , H04B10/40
摘要： A point-to-point wireless gigabit millimeter wave communications link is disclosed. Preferred embodiments provide a back-up link. In other embodiments, each of two communicating antennas (220) is equipped with a telescopic camera (200) connected to a processor programmed to recognize landscape images. The processors are programmed to remember the pattern of the landscape as it appears when the antennas are aligned. Each of the cameras (200) then view the landscape periodically or continuously and if the landscape in view changes by more than a predetermined amount a signal is provided to indicate a misalignment. An operator can then take corrective action or alternatively the antenna system can be configured for remote or automatic realignment based of feedback from the camera (200). In a preferred embodiment, the antennas are initially aligned by substituting a narrow band oscillator power source for the signal transmitting electronics associated with a first antenna and a power detector is substituted for the signal receiving electronics associated with a second antenna.
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公开(公告)号：EP2185480A1
公开(公告)日：2010-05-19
申请号：EP08794883.2
申请日：2008-07-30
发明人： ERVIN, John, Lawrence , TIGLI, Hus , KENNEDY, Mark
CPC分类号： G01N33/54393
摘要： A method which renders the 3D surface of the insides of the pores of a porous silicon biochlp appropriate for conducting studies on biomolecule interactions without labels. The method comprises: converting the Sl-H surfaces to silica surfaces; silanizing the silica surface to produce silane surfaces; and coating the silane surface with an Intermediate moiety to minimize non specific binding.
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