Patents by Inventor Mohammad Radwan Alhawari
Mohammad Radwan Alhawari 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: 10819149Abstract: Disclosed is an energy mixer having a first active diode coupled between a first input node and an output node, and a second active diode coupled between a second input node and the output node. A first capacitor is coupled between the first input node and a dynamic node, and a second capacitor is coupled between the second input node and a third node. Switching circuitry is configured to selectively couple the dynamic node between a fixed voltage node and the second input node in response to a control signal provided by control circuitry. When an output voltage at the output node is within a first range, the dynamic node is coupled to the fixed voltage node and when the output voltage is within a lower voltage second range, the dynamic node is coupled to the second input node such that first capacitor and second capacitor are coupled in series.Type: GrantFiled: April 11, 2018Date of Patent: October 27, 2020Assignee: Khalifa University of Science and TechnologyInventors: Mohammad Radwan Alhawari, Baker Mohammad, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
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Patent number: 10666136Abstract: A two dimensional charge pump and control circuitry is disclosed. The two dimensional charge pump includes a group of parallel-coupled charge pumps coupled between a DC power source and a first output connection node via a corresponding group of charge pump connection nodes. The group of parallel-coupled charge pumps has a corresponding group of clock connection nodes. Each of the group of parallel-coupled charge pumps includes a corresponding group of series capacitive elements coupled between a corresponding one of the group of charge pump connection nodes and a corresponding one of the group of clock connection nodes.Type: GrantFiled: August 14, 2018Date of Patent: May 26, 2020Assignee: Khalifa University of Science and TechnologyInventors: Abdulqader Nael Mahmoud, Mohammad Radwan Alhawari, Baker Mohammad, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
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Patent number: 10651730Abstract: A switched capacitor DC-DC converter, which includes a pulse frequency modulation circuit, a multiplexing pulse-width modulation circuit, and a switched capacitive element, is disclosed. The switched capacitive element is coupled between the pulse frequency modulation circuit and the multiplexing pulse-width modulation circuit. The pulse frequency modulation circuit uses a DC source signal to charge the switched capacitive element. The pulse frequency modulation circuit provides a group of output signals by multiplexing the switched capacitive element and reduces reverse current to the switched capacitive element when updating each of the group of output signals.Type: GrantFiled: July 19, 2018Date of Patent: May 12, 2020Assignee: Khalifa University of Science and TechnologyInventors: Dima Kilani, Baker Mohammad, Mohammad Radwan Alhawari, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
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Publication number: 20190081558Abstract: A switched capacitor DC-DC converter, which includes a pulse frequency modulation circuit, a multiplexing pulse-width modulation circuit, and a switched capacitive element, is disclosed. The switched capacitive element is coupled between the pulse frequency modulation circuit and the multiplexing pulse-width modulation circuit. The pulse frequency modulation circuit uses a DC source signal to charge the switched capacitive element. The pulse frequency modulation circuit provides a group of output signals by multiplexing the switched capacitive element and reduces reverse current to the switched capacitive element when updating each of the group of output signals.Type: ApplicationFiled: July 19, 2018Publication date: March 14, 2019Inventors: Dima Kilani, Baker Mohammed, Mohammad Radwan Alhawari, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
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Publication number: 20190081560Abstract: A two dimensional charge pump and control circuitry is disclosed. The two dimensional charge pump includes a group of parallel-coupled charge pumps coupled between a DC power source and a first output connection node via a corresponding group of charge pump connection nodes. The group of parallel-coupled charge pumps has a corresponding group of clock connection nodes. Each of the group of parallel-coupled charge pumps includes a corresponding group of series capacitive elements coupled between a corresponding one of the group of charge pump connection nodes and a corresponding one of the group of clock connection nodes.Type: ApplicationFiled: August 14, 2018Publication date: March 14, 2019Inventors: Abdulqader Nael Mahmoud, Mohammad Radwan Alhawari, Baker Mohammad, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
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Publication number: 20180233924Abstract: Disclosed is an energy mixer having a first active diode coupled between a first input node and an output node, and a second active diode coupled between a second input node and the output node. A first capacitor is coupled between the first input node and a dynamic node, and a second capacitor is coupled between the second input node and a third node. Switching circuitry is configured to selectively couple the dynamic node between a fixed voltage node and the second input node in response to a control signal provided by control circuitry. When an output voltage at the output node is within a first range, the dynamic node is coupled to the fixed voltage node and when the output voltage is within a lower voltage second range, the dynamic node is coupled to the second input node such that first capacitor and second capacitor are coupled in series.Type: ApplicationFiled: April 11, 2018Publication date: August 16, 2018Inventors: Mohammad Radwan Alhawari, Baker Mohammad, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
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Patent number: 9972761Abstract: A thermoelectric energy harvesting system for charging an energy store from ambient thermal energy includes a thermoelectric energy generator (TEG), an automatic polarity monitor, and switching matrix. The polarity monitor detects when the polarity of an input voltage in the system is reversed relative to a standard voltage polarity, and causes the switching matrix to switch the inputs from the thermoelectric energy harvester.Type: GrantFiled: March 30, 2015Date of Patent: May 15, 2018Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Mohammad Radwan Alhawari, Baker Mohammad, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
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Patent number: 9973007Abstract: Disclosed is an energy mixer having a first active diode coupled between a first input node and an output node, and a second active diode coupled between a second input node and the output node. A first capacitor is coupled between the first input node and a dynamic node, and a second capacitor is coupled between the second input node and a third node. Switching circuitry is configured to selectively couple the dynamic node between a fixed voltage node and the second input node in response to a control signal provided by control circuitry. When an output voltage at the output node is within a first range, the dynamic node is coupled to the fixed voltage node and when the output voltage is within a lower voltage second range, the dynamic node is coupled to the second input node such that first capacitor and second capacitor are coupled in series.Type: GrantFiled: June 16, 2016Date of Patent: May 15, 2018Assignee: Khalifa University of Science and TechnologyInventors: Mohammad Radwan Alhawari, Baker Mohammad, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
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Publication number: 20170366012Abstract: Disclosed is an energy mixer having a first active diode coupled between a first input node and an output node, and a second active diode coupled between a second input node and the output node. A first capacitor is coupled between the first input node and a dynamic node, and a second capacitor is coupled between the second input node and a third node. Switching circuitry is configured to selectively couple the dynamic node between a fixed voltage node and the second input node in response to a control signal provided by control circuitry. When an output voltage at the output node is within a first range, the dynamic node is coupled to the fixed voltage node and when the output voltage is within a lower voltage second range, the dynamic node is coupled to the second input node such that first capacitor and second capacitor are coupled in series.Type: ApplicationFiled: June 16, 2016Publication date: December 21, 2017Inventors: Mohammad Radwan Alhawari, Baker Mohammad, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
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Publication number: 20160284961Abstract: A thermoelectric energy harvesting system for charging an energy store from ambient thermal energy includes a thermoelectric energy generator (TEG), an automatic polarity monitor, and switching matrix. The polarity monitor detects when the polarity of an input voltage in the system is reversed relative to a standard voltage polarity, and causes the switching matrix to switch the inputs from the thermoelectric energy harvester.Type: ApplicationFiled: March 30, 2015Publication date: September 29, 2016Inventors: Mohammad Radwan Alhawari, Baker Mohammad, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar