Patents by Inventor Sherif Ahmed
Sherif Ahmed has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20200320814Abstract: Various embodiments of the present invention are directed toward systems and methods relating to security screening. For example, a screening system includes a chamber configured to accommodate a user to be screened, and a chamber scanner. The chamber scanner is configured to scan the user to identify whether the user is carrying an undivested item that needs to be divested. The chamber is configured to release the user to proceed from the chamber to a secure area, upon confirmation that no undivested items are to be divested.Type: ApplicationFiled: April 3, 2020Publication date: October 8, 2020Applicant: The Government of the United of America, as represented by the Secretary of Homeland SecurityInventors: William Hastings, Sherif Ahmed, James Gilkeson, Douglas MacIvor, Luke Olsen
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Publication number: 20200159606Abstract: A method and a system for detecting faulty devices are provided. The method comprises the steps of gathering test data in near field with respect to a device under test, extrapolating the test data to far field conditions with the aid of at least one machine learning technique, and evaluating a far field performance of the device under test on the basis of the far field conditions.Type: ApplicationFiled: November 20, 2018Publication date: May 21, 2020Inventors: Benoit DERAT, Athanasios KARAMALIS, Sherif AHMED
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Publication number: 20200110156Abstract: A radar target simulator for simulating radar targets is provided. The radar target simulator has an analogue-to-digital converter having a first clock generator and a digital-to-analogue converter having a second clock generator. The analogue-to-digital converter is configured to receive a radar signal transmitted by a radar system as an input signal, while the digital-to-analogue converter is configured to return an output signal to the radar system for simulation of the radar target. Further, the first and the second clock generator are configured to operate the analogue-to-digital converter and the digital-to-analogue converter at a different sampling rate in each case.Type: ApplicationFiled: June 6, 2019Publication date: April 9, 2020Inventors: Sherif AHMED, Julian ADAMETZ, Martin VOSSIEK, Georg KÖRNER, Christian CARLOWITZ
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Publication number: 20200103497Abstract: A radar target simulation device for testing a device under test with respect to at least one radar scenario. The radar target simulation device includes a memory, a radar scenario simulator and at least two antennas. The memory stores the radar scenario(s) with respect to the device under test, and provides the radar scenario(s) to the radar scenario simulator. The radar scenario simulator receives radar signals from the device under test via the antennas to simulate the radar scenario(s) by manipulating the radar signals according to the radar scenario(s), generates resulting manipulated radar signals, and transmits the manipulated radar signals to the device under test via the antennas. The memory contains storage contents including storage cells, wherein each storage cell corresponds to the respective antenna of the at least two antennas.Type: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventors: Sherif AHMED, Steffen HEUEL, Andreas REIL, Udo REIL
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Patent number: 10585185Abstract: A system for scanning a form of interest, while the form of interest is in motion, is provided. The system comprises a first detector panel-pair, comprising a first detector panel and a second detector panel, spatially offset from the first detector panel by a first continuous passageway for the motion of the form of interest. A second detector panel-pair comprises a third detector panel and a fourth detector panel, spatially offset from the third detector panel by a second continuous passageway for the motion of the form of interest, and a location-tracking device adapted to monitor the location of the form of interest.Type: GrantFiled: February 3, 2017Date of Patent: March 10, 2020Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Sherif Ahmed, Frank Gumbmann, Athanasios Karamalis, Andreas Schiessl
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Patent number: 10581150Abstract: A test setup for measuring the impact of radar antenna covers is provided. The test setup comprises a radar sensor antenna configured to receive radar radiation and to generate radar radiation, a test antenna configured to generate radar radiation and to receive radar radiation and a radar sensor antenna cover that covers the radar sensor antenna. The test antenna comprises several antenna elements in elevation and/or azimuth direction.Type: GrantFiled: April 21, 2017Date of Patent: March 3, 2020Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Steffen Heuel, Sherif Ahmed, Andreas Schiessl
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Patent number: 10527714Abstract: A calibration device for calibrating an antenna array is provided. The calibration device comprises a transmitter, which is configured for transmitting a first calibration signal to all antennas of the antenna array, resulting in a plurality of received first calibration signals provided by the antenna array to the calibration device. Moreover, the calibration device comprises a receiver, which is configured for receiving a plurality of second calibration signals from the antennas of the antenna array. Finally, the calibration device comprises an antenna characteristic calculator, which is configured for calculating an antenna characteristic of each individual antenna of the antenna array based on the plurality of received first calibration signals and the plurality of received second calibration signals.Type: GrantFiled: January 17, 2017Date of Patent: January 7, 2020Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Andreas Genghammer, Ralf Juenemann, Sherif Ahmed, Frank Gumbmann
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Patent number: 10527715Abstract: A radar simulation device for testing a device under test with respect to at least one radar scenario is provided. The radar simulation device comprises a memory, a radar scenario simulator, and two or more antennas. The memory is configured to store the radar scenario with respect to the device under test, and to provide the radar scenario to the radar scenario simulator. The radar scenario simulator is configured to receive a first number of radar signals from the device under test via the at least two antennas, to simulate the at radar scenario by manipulating the first number of radar signals according to the radar scenario and generating a resulting second number of manipulated radar signals, and to transmit the second number of manipulated radar signals to the device under test via the at least two antennas.Type: GrantFiled: August 12, 2016Date of Patent: January 7, 2020Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Sherif Ahmed, Steffen Heuel, Andreas Reil, Udo Reil
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Patent number: 10509107Abstract: A device for simulating at least one echo signal of a signal is described, said device comprising an input for receiving the signal, a signal manipulation unit and an output for transmitting the signal processed by said signal manipulation unit. Said signal manipulation unit is configured to add a delay to the signal, to change the frequency of the signal and/or to change the amplitude of the signal. Said device further comprises at least one bandwidth changing unit. Said bandwidth changing unit is configured to change the frequency bandwidth of the signal. In addition, a system and a method for simulating at least one echo signal of a signal are described.Type: GrantFiled: January 13, 2017Date of Patent: December 17, 2019Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Steffen Heuel, Sherif Ahmed, Bernhard Schaffer
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Publication number: 20190336577Abstract: Described herein are methods and compositions relating to the treatment of a tumor (e.g., schwannoma) by increasing expression of Apoptosis-associated Speck-like protein containing a CARD (ASC) and/or gasdermin D. In some embodiment, the increased expression is provided by means of a vector or construct comprising a nucleic acid encoding Apoptosis-associated Speck-like protein containing a CARD (ASC) and/or gasdermin D operably linked to a Schwann-lineage cell-specific promoter. In some embodiments, the vector is a viral vector.Type: ApplicationFiled: December 6, 2017Publication date: November 7, 2019Applicant: THE GENERAL HOSPITAL CORPORATIONInventors: Gary J. BRENNER, Giulia FULCI, Sherif AHMED
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Patent number: 10288661Abstract: A method for testing the transmission and reflection properties of an automotive radome body is described. An automotive radome body is placed at an installation location. A first signal is sent via at least one transmission antenna of an antenna system facing a first side of the radome body wherein the reflected part of the first signal is received by several receiving antennas of the antenna system facing the first side in order to determine the reflection properties of the radome body. A second signal is sent via a remote transmission antenna facing a second side of the radome body being opposite to the first side wherein the transmitted part of the second signal is received by the several receiving antennas of the antenna system in order to determine the transmission properties of the radome body. Further, an apparatus is described.Type: GrantFiled: June 13, 2017Date of Patent: May 14, 2019Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Sherif Ahmed, Tobias Koeppel
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Publication number: 20190135897Abstract: The present invention relates to new biomimetic mineralized apatite structures. The present invention also relates to processes for the production of new biomimetic mineralized apatite structures based on natural and synthetic protein scaffolds. In particular, the invention provides synthetic crystal having a hierarchical structure formed on an elastin-like polypeptide membrane or hydrogel. The invention also provides methods of making such crystals, both in vivo and in vitro, as well as kits comprising membranes or hydrogels with cross-linking agents and/or mineralization solutions. The invention also provides the use of such structures in methods of treatment.Type: ApplicationFiled: April 3, 2017Publication date: May 9, 2019Inventors: Sherif Ahmed Abdelsalam Elsharkawy, Maisoon Al-Jawad, Alvaro Mata Chavarria, Esther Tejeda-Montes, Roxanna Sharon Ramnarine Sanchez
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Publication number: 20180306903Abstract: A test setup for measuring the impact of radar antenna covers is provided. The test setup comprises a radar sensor antenna configured to receive radar radiation and to generate radar radiation, a test antenna configured to generate radar radiation and to receive radar radiation and a radar sensor antenna cover that covers the radar sensor antenna. The test antenna comprises several antenna elements in elevation and/or azimuth direction.Type: ApplicationFiled: April 21, 2017Publication date: October 25, 2018Inventors: Steffen HEUEL, Sherif AHMED, Andreas SCHIESSL
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Publication number: 20180224538Abstract: A system for scanning a form of interest, while the form of interest is in motion, is provided. The system comprises a first detector panel-pair, comprising a first detector panel and a second detector panel, spatially offset from the first detector panel by a first continuous passageway for the motion of the form of interest. A second detector panel-pair comprises a third detector panel and a fourth detector panel, spatially offset from the third detector panel by a second continuous passageway for the motion of the form of interest, and a location-tracking device adapted to monitor the location of the form of interest.Type: ApplicationFiled: February 3, 2017Publication date: August 9, 2018Inventors: Sherif AHMED, Frank GUMBMANN, Athanasios KARAMALIS, Andreas SCHIESSL
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Publication number: 20180203098Abstract: A device for simulating at least one echo signal of a signal is described, said device comprising an input for receiving the signal, a signal manipulation unit and an output for transmitting the signal processed by said signal manipulation unit. Said signal manipulation unit is configured to add a delay to the signal, to change the frequency of the signal and/or to change the amplitude of the signal. Said device further comprises at least one bandwidth changing unit. Said bandwidth changing unit is configured to change the frequency bandwidth of the signal. In addition, a system and a method for simulating at least one echo signal of a signal are described.Type: ApplicationFiled: January 13, 2017Publication date: July 19, 2018Applicant: Rohde & Schwarz GmbH & Co. KGInventors: Steffen HEUEL, Sherif AHMED, Bernhard SCHAFFER
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Publication number: 20180136313Abstract: A calibration device for calibrating an antenna array is provided. The calibration device comprises a transmitter, which is configured for transmitting a first calibration signal to all antennas of the antenna array, resulting in a plurality of received first calibration signals provided by the antenna array to the calibration device. Moreover, the calibration device comprises a receiver, which is configured for receiving a plurality of second calibration signals from the antennas of the antenna array. Finally, the calibration device comprises an antenna characteristic calculator, which is configured for calculating an antenna characteristic of each individual antenna of the antenna array based on the plurality of received first calibration signals and the plurality of received second calibration signals.Type: ApplicationFiled: January 17, 2017Publication date: May 17, 2018Inventors: Andreas GENGHAMMER, Ralf JUENEMANN, Sherif AHMED, Frank GUMBMANN
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Patent number: 9915526Abstract: An apparatus comprises: (1) measuring unit configured to transmit a signal towards the object and to determine a plurality of voxels, each comprising phase and magnitude of a reflected signal and spatial coordinates (comprising Z-axis, X-axis and Y-axis), and the voxels comprise a plurality of series of voxels along the Z-axis, each having a same X-coordinate and a same Y-coordinate; and (2) surface-determining unit comprising (a) magnitude unit configured to determine a maximum magnitude voxel for each series of voxels, (b) phase unit configured to determine, for each maximum magnitude voxel, phases of at least three voxels (maximum magnitude voxel and voxels adjacent thereto), (c) angle unit configured to determine, for each maximum magnitude voxel, a normal vector based on the respective phases, and (d) reconstructing unit configured to determine the object surface based on the spatial coordinates of the maximum magnitude voxels and the respective normal vectors.Type: GrantFiled: January 23, 2014Date of Patent: March 13, 2018Assignee: Rohde & Schwarz GmbH & Co. KGInventor: Sherif Ahmed
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Publication number: 20170363719Abstract: A radar simulation device for testing a device under test with respect to at least one radar scenario is provided. The radar simulation device comprises a memory, a radar scenario simulator, and two or more antennas. The memory is configured to store the radar scenario with respect to the device under test, and to provide the radar scenario to the radar scenario simulator. The radar scenario simulator is configured to receive a first number of radar signals from the device under test via the at least two antennas, to simulate the at radar scenario by manipulating the first number of radar signals according to the radar scenario and generating a resulting second number of manipulated radar signals, and to transmit the second number of manipulated radar signals to the device under test via the at least two antennas.Type: ApplicationFiled: August 12, 2016Publication date: December 21, 2017Inventors: Sherif AHMED, Steffen HEUEL, Andreas REIL, Udo REIL
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Publication number: 20170356941Abstract: A method for testing the transmission and reflection properties of an automotive radome body is described. An automotive radome body is placed at an installation location. A first signal is sent via at least one transmission antenna of an antenna system facing a first side of the radome body wherein the reflected part of the first signal is received by several receiving antennas of the antenna system facing the first side in order to determine the reflection properties of the radome body. A second signal is sent via a remote transmission antenna facing a second side of the radome body being opposite to the first side wherein the transmitted part of the second signal is received by the several receiving antennas of the antenna system in order to determine the transmission properties of the radome body. Further, an apparatus is described.Type: ApplicationFiled: June 13, 2017Publication date: December 14, 2017Applicant: Rohde & Schwarz GmbH & Co. KGInventors: Sherif Ahmed, Tobias Koeppel
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Patent number: 9684065Abstract: A method for detecting structures (41, 42) such as edges and material transitions on and/or in an object (40) under investigation has an antenna arrangement which transmits microwave signals and registers the signals reflected from the object (40) under investigation in magnitude and phase. A three-dimensional image of the object (40) under investigation is reconstructed at sampling points of the object under investigation from the latter. It operates with the method steps: determination of a spatial position of a structure (41, 42) from the magnitude of the reflected signal, determination of the sign of the reflection coefficient of the reflected signal at the spatial position of the structure (41, 42), and identification of structures (41, 42) on the basis of the spatial arrangement of the sign of the reflection coefficient.Type: GrantFiled: March 28, 2013Date of Patent: June 20, 2017Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventor: Sherif Ahmed