Patents by Inventor Khaled Nabil Salama
Khaled Nabil Salama 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: 20180166134Abstract: A method for readout of a gated memristor array, a memristor array readout circuit and method of fabrication thereof are provided. In the context of the method, the method includes selecting a row of a memristor array associated with a desired cell, measuring the value of the selected memristor row, and selecting a column of a memristor array associated with the desired cell. The selection of the column and selection of the row selects the desired cell. The method also includes measuring the value of the memristor selected row with the selected desired cell and determining the value of the desired cell based on the value of the selected memristor row and the value of the selected memristor row with the selected desired cell.Type: ApplicationFiled: June 15, 2016Publication date: June 14, 2018Inventors: Mohammed Affan Zidan, Hesham Omran, Ahmed Sultan Salem, Khaled Nabil Salama
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Publication number: 20180137916Abstract: Various examples are provided examples related to resistive content addressable memory (RCAM) based in-memory computation architectures. In one example, a system includes a content addressable memory (CAM) including an array of cells having a memristor based crossbar and an interconnection switch matrix having a gateless memristor array, which is coupled to an output of the CAM. In another example, a method, includes comparing activated bit values stored a key register with corresponding bit values in a row of a CAM, setting a tag bit value to indicate that the activated bit values match the corresponding bit values, and writing masked key bit values to corresponding bit locations in the row of the CAM based on the tag bit value.Type: ApplicationFiled: June 3, 2016Publication date: May 17, 2018Inventors: Khaled Nabil SALAMA, Mohammed Affan ZIDAN, Fadi J. KURDAHI, Ahmed ELTAWIL
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Publication number: 20180069486Abstract: Various examples are provided related to radio frequency (RF) to direct current (DC) power conversion. In one example, a RF-to-DC converter includes a fully cross-coupled rectification circuit including a pair of forward rectifying transistors and a feedback circuit configured to provide feedback bias signals to gates of the pair of forward rectifying transistors via feedback branch elements. In another example, a method includes receiving a radio frequency (RF) signal; rectifying the RF signal via a fully cross-coupled rectification circuit including a pair of forward rectifying transistors; and providing a DC output voltage from an out put connection of the fully cross-coupled rectification circuit, where gating of the pair of forward rectifying transistors is controlled by feedback bias signals provided to gates of the pair of forward rectifying transistors via feedback branch elements.Type: ApplicationFiled: May 26, 2016Publication date: March 8, 2018Inventors: Mahmoud Hamdy OUDA, Khaled Nabil SALAMA
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Patent number: 9614024Abstract: In accordance with the present disclosure, one embodiment of a fractal variable capacitor comprises a capacitor body in a microelectromechanical system (MEMS) structure, wherein the capacitor body has an upper first metal plate with a fractal shape separated by a vertical distance from a lower first metal plate with a complementary fractal shape; and a substrate above which the capacitor body is suspended.Type: GrantFiled: August 21, 2012Date of Patent: April 4, 2017Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Amro M. Elshurafa, Ahmed Gomaa Ahmed Radwan, Ahmed A. Emira, Khaled Nabil Salama
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Patent number: 9600238Abstract: Various embodiments are provided for fully digital chaotic differential equation-based systems and methods. In one embodiment, among others, a digital circuit includes digital state registers and one or more digital logic modules configured to obtain a first value from two or more of the digital state registers; determine a second value based upon the obtained first values and a chaotic differential equation; and provide the second value to set a state of one of the plurality of digital state registers. In another embodiment, a digital circuit includes digital state registers, digital logic modules configured to obtain outputs from a subset of the digital shift registers and to provide the input based upon a chaotic differential equation for setting a state of at least one of the subset of digital shift registers, and a digital clock configured to provide a clock signal for operating the digital shift registers.Type: GrantFiled: February 29, 2012Date of Patent: March 21, 2017Assignee: King Abdullah University of Science and Technology (KAUST)Inventors: Ahmed Gomaa Ahmed Radwan, Mohammed Affan Zidan, Khaled Nabil Salama
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Patent number: 9349786Abstract: An embodiment of a fractal fixed capacitor comprises a capacitor body in a microelectromechanical system (MEMS) structure. The capacitor body has a first plate with a fractal shape separated by a horizontal distance from a second plate with a fractal shape. The first plate and the second plate are within the same plane. Such a fractal fixed capacitor further comprises a substrate above which the capacitor body is positioned.Type: GrantFiled: August 17, 2012Date of Patent: May 24, 2016Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Amro M. Elshurafa, Ahmed Gomaa Ahmed Radwan, Ahmed A. Emira, Khaled Nabil Salama
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Patent number: 9306450Abstract: Various embodiments of a high voltage charge pump are described. One embodiment is a charge pump circuit that comprises a plurality of switching stages each including a clock input, a clock input inverse, a clock output, and a clock output inverse. The circuit further comprises a plurality of pumping capacitors, wherein one or more pumping capacitors are coupled to a corresponding switching stage. The circuit also comprises a maximum selection circuit coupled to a last switching stage among the plurality of switching stages, the maximum selection circuit configured to filter noise on the output clock and the output clock inverse of the last switching stage, the maximum selection circuit further configured to generate a DC output voltage based on the output clock and the output clock inverse of the last switching stage.Type: GrantFiled: August 24, 2012Date of Patent: April 5, 2016Assignee: King Abdullah University of Science and TechnologyInventors: Ahmed A. Emira, Mohamed Abdelghany, Mohannad Yomn Elsayed, Amro M. Elshurafa, Khaled Nabil Salama
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Patent number: 9304740Abstract: Various methods and systems related to chaos-based pseudo-random number generation are presented. In one example, among others, a system includes a pseudo-random number generator (PRNG) to generate a series of digital outputs and a nonlinear post processing circuit to perform an exclusive OR (XOR) operation on a first portion of a current digital output of the PRNG and a permutated version of a corresponding first portion of a previous post processed output to generate a corresponding first portion of a current post processed output. In another example, a method includes receiving at least a first portion of a current output from a PRNG and performing an XOR operation on the first portion of the current PRNG output with a permutated version of a corresponding first portion of a previous post processed output to generate a corresponding first portion of a current post processed output.Type: GrantFiled: March 14, 2013Date of Patent: April 5, 2016Assignee: King Abdullah University of Science and TechnologyInventors: Mohamed L. Barakat, Abhinav S. Mansingka, Ahmed Gomaa Ahmed Radwan, Khaled Nabil Salama
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Patent number: 8860607Abstract: An apparatus, system, and method for Gain Enhanced LTCC System-on-Package radar sensor. The sensor includes a substrate and an integrated circuit coupled to the substrate, where the integrated circuit is configured to transmit and receive radio frequency (RF) signals. An antenna may be coupled to the integrated circuit and a lens may be coupled to the antenna. The lens may be configured to enhance the gain of the sensor.Type: GrantFiled: August 9, 2011Date of Patent: October 14, 2014Assignee: King Abdullah University of Science and TechnologyInventors: Atif Shamim, Farhan Abdul Ghaffar, Muhammad Umair Khalid, Khaled Nabil Salama
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Publication number: 20140300409Abstract: Various embodiments of a high voltage charge pump are described. One embodiment is a charge pump circuit that comprises a plurality of switching stages each including a clock input, a clock input inverse, a clock output, and a clock output inverse. The circuit further comprises a plurality of pumping capacitors, wherein one or more pumping capacitors are coupled to a corresponding switching stage. The circuit also comprises a maximum selection circuit coupled to a last switching stage among the plurality of switching stages, the maximum selection circuit configured to filter noise on the output clock and the output clock inverse of the last switching stage, the maximum selection circuit further configured to generate a DC output voltage based on the output clock and the output clock inverse of the last switching stage.Type: ApplicationFiled: August 24, 2012Publication date: October 9, 2014Applicant: King Abdullah University of Science and TechnologyInventors: Ahmed A. Emira, Mohamed Abdelghany, Mohannad Yomn Elsayed, Amro M. Elshurafa, Khaled Nabil Salama
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Publication number: 20140240894Abstract: In accordance with the present disclosure, one embodiment of a fractal variable capacitor comprises a capacitor body in a microelectromechanical system (MEMS) structure, wherein the capacitor body has an upper first metal plate with a fractal shape separated by a vertical distance from a lower first metal plate with a complementary fractal shape; and a substrate above which the capacitor body is suspended.Type: ApplicationFiled: August 21, 2012Publication date: August 28, 2014Inventors: Amro M. Elshurafa, Ahmed Gomaa Ahmed Radwan, Ahmed A. Emira, Khaled Nabil Salama
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Publication number: 20140239446Abstract: An embodiment of a fractal fixed capacitor comprises a capacitor body in a microelectromechanical system (MEMS) structure. The capacitor body has a first plate with a fractal shape separated by a horizontal distance from a second plate with a fractal shape. The first plate and the second plate are within the same plane. Such a fractal fixed capacitor further comprises a substrate above which the capacitor body is positioned.Type: ApplicationFiled: August 17, 2012Publication date: August 28, 2014Inventors: Amro M. Elshurafa, Ahmed Gomaa Ahmed Radwan, Ahmed A. Emira, Khaled Nabil Salama
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Publication number: 20120226724Abstract: Various embodiments are provided for fully digital chaotic differential equation-based systems and methods. In one embodiment, among others, a digital circuit includes digital state registers and one or more digital logic modules configured to obtain a first value from two or more of the digital state registers; determine a second value based upon the obtained first values and a chaotic differential equation; and provide the second value to set a state of one of the plurality of digital state registers. In another embodiment, a digital circuit includes digital state registers, digital logic modules configured to obtain outputs from a subset of the digital shift registers and to provide the input based upon a chaotic differential equation for setting a state of at least one of the subset of digital shift registers, and a digital clock configured to provide a clock signal for operating the digital shift registers.Type: ApplicationFiled: February 29, 2012Publication date: September 6, 2012Applicant: King Abdullah University of Science and Technology (KAUST)Inventors: Ahmed Gomaa Ahmed Radwan, Mohammed Affan Zidan, Khaled Nabil Salama
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Publication number: 20120032836Abstract: An apparatus, system, and method for Gain Enhanced LTCC System-on-Package radar sensor. The sensor includes a substrate and an integrated circuit coupled to the substrate, where the integrated circuit is configured to transmit and receive radio frequency (RF) signals. An antenna may be coupled to the integrated circuit and a lens may be coupled to the antenna. The lens may be configured to enhance the gain of the sensor.Type: ApplicationFiled: August 9, 2011Publication date: February 9, 2012Applicant: King Abdullah University of Science and TechnologyInventors: Atif Shamim, Farhan Abdul Ghaffar, Muhammad Umair Khalid, Khaled Nabil Salama