Patents by Inventor Waleed Khalil
Waleed Khalil 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: 10759237Abstract: A tire cooling system can be installed in a vehicle to receive condensate from evaporator of the vehicle and use the condensate for cooling one or more tires of the vehicle. The system includes a drain line, a collection reservoir, a pump, at least one spray assembly configured for positioning proximate a vehicle tire, a valve, water level sensors, a tire temperature sensor, and a controller. The at least one spray assembly includes at least one nozzle attached to a manifold. A filter is disposed within the drain line for filtering condensate that is directed to the reservoir from the evaporator.Type: GrantFiled: August 7, 2018Date of Patent: September 1, 2020Assignee: United Arab Emirates UniversityInventors: Mariam Abdulrazzaq Abdullah Alhammadi, Waleed Khalil Ahmed
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Publication number: 20200266842Abstract: In accordance with various embodiments of the disclosed subject matter, a system, apparatus and method is configured to provide a poly-phased, time-interleaved radio frequency (RF) digital-to-analog converter (DAC) suitable for use in radar, radio, mobile and other RF systems.Type: ApplicationFiled: February 18, 2020Publication date: August 20, 2020Applicant: Government of the United States as represented by the Secretary of the Air ForceInventors: Vipul J. Patel, John M Emmert, Waleed Khalil
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Patent number: 10720928Abstract: A frequency-agile phase modulator with glitch-free multiplexer in CMOS process technologies for applications including wireless communications, radar, automotive radar, etc. Examples herein offer a novel phase modulator architecture that, when combined with either a wideband power amplifier or multiple narrowband amplifiers, allows for a single transmitter to transmit radar, communication, telemetry, or other similar waveforms across multiple frequency bands. The embodiments herein allow one transmitter to cover a very large operating frequency range, resulting in a decrease in size, weight, power consumption, and cost for future “small” platform systems. In an embodiment, the phase modulator circuit includes a reconfigurable delay-locked loop (DLL) circuit that is configured to receive a radio frequency (RF) input signal (RFin) and a configuration signal.Type: GrantFiled: March 12, 2019Date of Patent: July 21, 2020Assignee: United States of America as represented by the Secretary of the Air ForceInventors: Matthew LaRue, Waleed Khalil, Tony Quach, Brian Dupaix
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Patent number: 10682250Abstract: The robotic gripping assist (“RGA”) provides a user with additional grip strength by supporting and forcefully pushing a user's fingers and hand to a gripping position. Motors are supported on a user's forearm and act as a source for the forced movement. A flexible member is worn on the back of a user's hand. The motors individually draw in or let out wires that cause the flexible member to move from a gripping to non-gripping position, and may pivot the flexible member laterally to provide for ulnar and radial wrist flexion. By bending the flexible member downward, through reeling in wires below the member, the attached fingers of the user are forced into a gripping position. Lateral movement is provided by reeling in the wires on the side of the intended bending direction.Type: GrantFiled: September 16, 2019Date of Patent: June 16, 2020Assignee: United Arab Emirated UniversityInventors: Fady Al Najjar, Nouf Fadel Nasser Alsaedi, Waleed Khalil Ahmed, Mostafa Al Kasabi
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Publication number: 20200047568Abstract: A tire cooling system can be installed in a vehicle to receive condensate from evaporator of the vehicle and use the condensate for cooling one or more tires of the vehicle. The system includes a drain line, a collection reservoir, a pump, at least one spray assembly configured for positioning proximate a vehicle tire, a valve, water level sensors, a tire temperature sensor, and a controller. The at least one spray assembly includes at least one nozzle attached to a manifold. A filter is disposed within the drain line for filtering condensate that is directed to the reservoir from the evaporator.Type: ApplicationFiled: August 7, 2018Publication date: February 13, 2020Inventors: MARIAM ABDULRAZZAQ ABDULLAH ALHAMMADI, WALEED KHALIL AHMED
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Patent number: 10507598Abstract: The method of recycling carbon fiber prepreg waste and transparent thermoplastic waste includes shredding of a volume of transparent thermoplastic waste and a volume of carbon fiber prepreg waste, where the carbon fiber prepreg waste includes a colored backing film. The colored backing film may have a plurality of colors associated therewith, yielding a mixture of multi-colored shreds. A mold is filled with the shredded volume of transparent thermoplastic waste, and the mold is inserted and compressed in a hot press. The shredded volume of transparent thermoplastic waste is cured in the hot press to produce a transparent sheet. The shredded volume of carbon fiber prepreg waste is then heated, such as, for example, with hot air, and then spread on the transparent sheet. The heated, shredded volume of carbon fiber prepreg waste and the transparent sheet are hot pressed to form a colored sheet with a transparent protective layer.Type: GrantFiled: May 28, 2019Date of Patent: December 17, 2019Assignee: United Arab Emirates UniversityInventor: Waleed Khalil Ahmed
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Patent number: 10449677Abstract: The robotic gripping assist (“RGA”) provides a user with additional grip strength by supporting and forcefully pushing a user's fingers and hand to a gripping position. A motor, controller, and power source are supported on a user's forearm and act as a source for the forced movement. A bending member is worn on the back of a user's hand. The motor draws in or lets out wires that cause the bending member to bend or straighten. By bending the bending member, through rotating the motor in a first direction, the attached fingers of the user are forced into a gripping position. The fingers are moved to a non-gripping position by rotating the motor in the opposite direction.Type: GrantFiled: March 12, 2019Date of Patent: October 22, 2019Assignee: United Arab Emirates UniversityInventors: Fady Al Najjar, Nouf Fadel Nasser Alsaedi, Waleed Khalil Ahmed
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Publication number: 20190275707Abstract: The method of recycling carbon fiber prepreg waste and transparent thermoplastic waste includes shredding of a volume of transparent thermoplastic waste and a volume of carbon fiber prepreg waste, where the carbon fiber prepreg waste includes a colored backing film. The colored backing film may have a plurality of colors associated therewith, yielding a mixture of multi-colored shreds. A mold is filled with the shredded volume of transparent thermoplastic waste, and the mold is inserted and compressed in a hot press. The shredded volume of transparent thermoplastic waste is cured in the hot press to produce a transparent sheet. The shredded volume of carbon fiber prepreg waste is then heated, such as, for example, with hot air, and then spread on the transparent sheet. The heated, shredded volume of carbon fiber prepreg waste and the transparent sheet are hot pressed to form a colored sheet with a transparent protective layer.Type: ApplicationFiled: May 28, 2019Publication date: September 12, 2019Inventor: WALEED KHALIL AHMED
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Patent number: 10411706Abstract: A wide-band digital buffer formed in a III-V substrate including a first transistor, a second transistor, a pull-up circuit shifts a t signal to a level of the first transistor. A first capacitor receives the signal, and passes at least a portion of the AC component of the signal to the first transistor. A resistor receives a first bias voltage, and passes it to the first transistor. A pull-down circuit shifts a second signal to a level of the second transistor. A second capacitor receives the second signal, and passes at least a portion of the AC component of the second signal to the second transistor. A second resistor receives a second bias voltage, and passes it to the second transistor.Type: GrantFiled: October 19, 2018Date of Patent: September 10, 2019Assignee: United States of America as represented by the Secretary of the Air ForceInventors: Waleed Khalil, Brian P Dupaix, Paul M Watson, Aji G Mattamana, Shahriar Rashid, Tony Quach, Wagdy Gaber Mahdi Hussein
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Patent number: 10399747Abstract: The toothpaste cap with dental care tools includes a cap for sealing an open end of a squeezable tube dispenser. The cap is formed as a hollow body having a closed upper end and an open lower end. A cylindrical retaining member is mounted, substantially centrally, to a lower face of the closed upper end within the hollow body. The cylindrical retaining member is adapted for releasably receiving and sealing a spout of a squeezable tube dispenser. The cap can have a first sidewall having a flat planar contour and a second sidewall having an arcuate contour. The flat, planar first sidewall of the hollow body is adapted for pressing against the squeezable tube dispenser to selectively manually manipulate contents thereof. Alternatively, the cap can have a substantially cylindrical sidewall and a squeezing member attached to an exterior surface thereof.Type: GrantFiled: December 3, 2018Date of Patent: September 3, 2019Assignee: United Arab Emirates UniversityInventor: Waleed Khalil Ahmed
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Publication number: 20190100363Abstract: The toothpaste cap with dental care tools includes a cap for sealing an open end of a squeezable tube dispenser. The cap is formed as a hollow body having a closed upper end and an open lower end. A cylindrical retaining member is mounted, substantially centrally, to a lower face of the closed upper end within the hollow body. The cylindrical retaining member is adapted for releasably receiving and sealing a spout of a squeezable tube dispenser. The cap can have a first sidewall having a fiat planar contour and a second sidewall having an arcuate contour. The flat, planar first sidewall of the hollow body is adapted for pressing against the squeezable tube dispenser to selectively manually manipulate contents thereof Alternatively, the cap can have a substantially cylindrical sidewall and a squeezing member attached to an exterior surface thereof.Type: ApplicationFiled: December 3, 2018Publication date: April 4, 2019Inventor: WALEED KHALIL AHMED
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Patent number: 9698735Abstract: A Low Voltage Differential Signaling (LVDS) compliant receiver includes a differential amplifier having inputs and outputs. A first input coupling capacitor and second input coupling capacitor are electrically coupled to each of the first differential input and the second differential input, respectively. The receiver also includes a first and a second regenerative feedback latching mechanism, and the first regenerative feedback latching mechanism is electrically coupled between the first input coupling capacitor and the first differential output. The second regenerative feedback latching mechanism is electrically coupled between the second input coupling capacitor and the second differential output.Type: GrantFiled: December 14, 2015Date of Patent: July 4, 2017Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Jamin McCue, Vipul J. Patel, Waleed Khalil, Brian Dupaix, James Wilson, Steven R Dooley
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Patent number: 9184764Abstract: A digital to analog converter (DAC) includes a quantity of N cells including a Least Significant Bit (LSB) cell, a Most Significant Bit (MSB) cell and, N?2 cells ordered therebetween. Each of the N cells is configured to carry a current of I, 2*I, 4*I, 8*I, . . . , 2^(N?1)*I, respectively. At least the LSB cell includes a first cell element and a second cell element driven by a first current input and a second current input, respectively. A difference between a magnitude of the first current input and a magnitude of the second input current is approximately equal to I.Type: GrantFiled: September 8, 2014Date of Patent: November 10, 2015Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Sidharth Balasubramanian, Waleed Khalil, Vipul J. Patel
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Patent number: 9065472Abstract: An interleaved digital to analog converter (DAC) includes at least a first signal path and a second signal path. The DAC further includes at least a first high speed DAC and a second high speed DAC each having an input and an output. The first signal path and the second signal path are electrically coupled to the first high speed DAC input and the second high speed DAC input, respectively. The DAC also includes a zero phase clock signal supplied to the first high speed DAC and a 180° phase shifted clock signal supplied to the second high speed DAC. A summation circuit, having at least two inputs and one output, is coupled to the outputs of the first high speed DAC and the second high speed DACs. A high-pass delta sigma modulator, a low-pass delta sigma modulator, a band pass delta sigma modulator, or notch filter delta sigma modulator is coupled between the first signal path and the first high speed DAC.Type: GrantFiled: March 5, 2015Date of Patent: June 23, 2015Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Jamin McCue, Vipul J. Patel, Waleed Khalil, Brian Dupaix, Tony Quach
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Patent number: 7302246Abstract: Briefly, in accordance with one embodiment of the invention, a calibration circuit may detect a difference between first and second outputs of a differential output programmable gain amplifier to determine a dc offset at the differential output. In the event an offset is detected, a differential gain of the programmable gain amplifier may be adjusted until the offset is adjusted, or eliminated, to an acceptable predetermined value.Type: GrantFiled: December 23, 2002Date of Patent: November 27, 2007Assignee: Intel CorporationInventors: James Tseng, Waleed Khalil, Bobby Nikjou, Luke A. Johnson
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Patent number: 7242338Abstract: Briefly, in accordance with one embodiment of the invention, a differential digital-to-analog converter utilized in a transmitter path of a transceiver utilizes a differential R2R architecture. Such a differential digital-to-analog converter may be utilized in higher speed, lower power and higher resolution applications with a higher area efficiency, for example in a WCDMA application.Type: GrantFiled: August 2, 2005Date of Patent: July 10, 2007Assignee: Intel CorporationInventors: Xuewen Jiang, Bobby B. Nikjou, Waleed Khalil, Syed R. Naqvi
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Patent number: 7050781Abstract: Some embodiments of the present invention include a circuit in a wireless transmitter or other apparatus is automatically calibrated using a calibration circuit to accommodate provide a desired characteristic such as a filter response, where the component values of the filter circuit may vary such as in an integrated circuit. In one embodiment, the calibration circuit is coupled to one or more adjustable capacitors in the filter circuit to select a capacitor value so that the filter circuit exhibits the desired filter response. In one particular embodiment, the adjustable capacitor is charged in an RC circuit for each clock cycle at power up. The value of the adjustable capacitor is changed for each clock cycle until the capacitor charges to a level greater than or equal to predetermined reference voltage.Type: GrantFiled: May 16, 2002Date of Patent: May 23, 2006Assignee: Intel CorporationInventors: Waleed Khalil, Tsung-Yuan Chang, Bobby Nikjou
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Patent number: 7034623Abstract: A voltage controlled oscillator includes two gain stages to split the bias current and reduce phase noise.Type: GrantFiled: December 5, 2003Date of Patent: April 25, 2006Assignee: Intel CorporationInventor: Waleed Khalil
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Patent number: 6975846Abstract: Briefly, in accordance with an embodiment of the invention, a method and circuit to reduce intermodulation distortion is provided, wherein the method includes receiving a baseband signal and an interferer signal located in a frequency band and attenuating the interferer signal to reduce intermodulation distortion in the frequency band, wherein the attenuating occurs prior to anti-alias filtering of the baseband signal.Type: GrantFiled: May 23, 2002Date of Patent: December 13, 2005Assignee: Intel CorporationInventors: Tsung Yuan Chang, Waleed Khalil, Bobby Nikjou
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Publication number: 20050270216Abstract: Briefly, in accordance with one embodiment of the invention, a differential digital-to-analog converter utilized in a transmitter path of a transceiver utilizes a differential R2R architecture. Such a differential digital-to-analog converter may be utilized in higher speed, lower power and higher resolution applications with a higher area efficiency, for example in a WCDMA application.Type: ApplicationFiled: August 2, 2005Publication date: December 8, 2005Inventors: Xuewen Jiang, Bobby Nikjou, Waleed Khalil, Syed Naqvi