Patents by Inventor Ahmed Gomaa Ahmed Radwan
Ahmed Gomaa Ahmed Radwan 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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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: 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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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: 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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Patent number: 8762114Abstract: Disclosed are various embodiments of methods and systems related to fractional order element based impedance matching. In one embodiment, a method includes aligning a traditional Smith chart (|?|=1) with a fractional order Smith chart (|?|?1). A load impedance is located on the traditional Smith chart and projected onto the fractional order Smith chart. A fractional order matching element is determined by transitioning along a matching circle of the fractional order Smith chart based at least in part upon characteristic line impedance. In another embodiment, a system includes a fractional order impedance matching application executed in a computing device. The fractional order impedance matching application includes logic that obtains a first set of Smith chart coordinates at a first order, determines a second set of Smith chart coordinates at a second order, and determines a fractional order matching element from the second set of Smith chart coordinates.Type: GrantFiled: November 3, 2011Date of Patent: June 24, 2014Assignee: King Abdullah University of Science and TechnologyInventors: Khaled N. Salama, Ahmed Gomaa Ahmed Radwan, Atif Shamim
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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: 20120123750Abstract: Disclosed are various embodiments of methods and systems related to fractional order element based impedance matching. In one embodiment, a method includes aligning a traditional Smith chart (|?|=1) with a fractional order Smith chart (|?|?1). A load impedance is located on the traditional Smith chart and projected onto the fractional order Smith chart. A fractional order matching element is determined by transitioning along a matching circle of the fractional order Smith chart based at least in part upon characteristic line impedance. In another embodiment, a system includes a fractional order impedance matching application executed in a computing device. The fractional order impedance matching application includes logic that obtains a first set of Smith chart coordinates at a first order, determines a second set of Smith chart coordinates at a second order, and determines a fractional order matching element from the second set of Smith chart coordinates.Type: ApplicationFiled: November 3, 2011Publication date: May 17, 2012Applicant: King Abdullah University of Science and Technology (KAUST)Inventors: Ahmed Gomaa Ahmed Radwan, Atif Shamim, Khaled N. Salama