Patents by Inventor Mehmet T. Ozgun
Mehmet T. Ozgun 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: 11888504Abstract: An electronic device may include signal transmission circuitry such as wireless circuitry having a signal source, a signal path, and an output node coupled to an output load. The signal source may transmit a signal to the output load over the signal path. The output load may have an impedance characterized by a first reflection coefficient. A signal coupler may be disposed on the signal path. A power detector coupled to a coupled node of the signal coupler may measure a voltage at the third node. A termination coupled to an isolated node of the signal coupler may include components that cause the termination to exhibit a second reflection coefficient. The second reflection coefficient may be selected to configure the voltage at the third node to track a power wave at the output load to within a constant that is invariant as the first reflection coefficient changes over time.Type: GrantFiled: February 18, 2022Date of Patent: January 30, 2024Assignee: Apple Inc.Inventors: Lucas Calderin, Mehmet T Ozgun
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Publication number: 20240014837Abstract: An electronic device may include signal transmission circuitry such as wireless circuitry having a signal source, a signal path, and an output node coupled to an output load. The signal source may transmit a signal to the output load over the signal path. The output load may have an impedance characterized by a first reflection coefficient. A signal coupler may be disposed on the signal path. A power detector coupled to a coupled node of the signal coupler may measure a voltage at the third node. A termination coupled to an isolated node of the signal coupler may include components that cause the termination to exhibit a second reflection coefficient. The second reflection coefficient may be selected to configure the voltage at the third node to track a power wave at the output load to within a constant that is invariant as the first reflection coefficient changes over time.Type: ApplicationFiled: September 22, 2023Publication date: January 11, 2024Inventors: Lucas Calderin, Mehmet T Ozgun
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Publication number: 20230268941Abstract: An electronic device may include signal transmission circuitry such as wireless circuitry having a signal source, a signal path, and an output node coupled to an output load. The signal source may transmit a signal to the output load over the signal path. The output load may have an impedance characterized by a first reflection coefficient. A signal coupler may be disposed on the signal path. A power detector coupled to a coupled node of the signal coupler may measure a voltage at the third node. A termination coupled to an isolated node of the signal coupler may include components that cause the termination to exhibit a second reflection coefficient. The second reflection coefficient may be selected to configure the voltage at the third node to track a power wave at the output load to within a constant that is invariant as the first reflection coefficient changes over time.Type: ApplicationFiled: February 18, 2022Publication date: August 24, 2023Inventors: Lucas Calderin, Mehmet T Ozgun
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Publication number: 20150229311Abstract: A gated divider circuit includes a windowing unit configured to generate windowing waveforms from input oscillator waveforms having a fixed duty cycle. Additionally, the gated divider circuit includes a gated output unit coupled to the windowing unit and configured to provide selected ones of the input oscillator waveforms as controlled by corresponding selected ones of the windowing waveforms. Also included are a method of operating a gated divider circuit and a frequency conversion system employing a gated divider circuit as a local oscillator divider.Type: ApplicationFiled: February 10, 2014Publication date: August 13, 2015Applicant: Nvidia CorporationInventors: Frank Zhang, Mehmet T. Ozgun
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Patent number: 8494473Abstract: Circuitry and a method for use in a radio frequency receiver for processing a radio frequency signal are provided. The circuitry comprises a mixer arranged to receive the radio frequency signal and down-convert the received radio frequency signal to a lower frequency. The received radio frequency signal has an interference component and the interference component in the down-converted signal is within an interference frequency range. The circuitry also comprises an LC based notch filter arranged to receive the down-converted signal from the mixer, filter the down-converted signal, and output the filtered signal for processing by a baseband processing block. The LC based notch filter has a notch centered within said interference frequency range, such that the LC based notch filter is arranged to attenuate the interference component in the down-converted signal.Type: GrantFiled: April 19, 2011Date of Patent: July 23, 2013Assignee: Icera Inc.Inventors: Mehmet T. Ozgun, Essam Atalla
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Patent number: 8467749Abstract: An FM-band transmit power amplifier and a method of transmitting in multiple bands. In one embodiment, the FM-band transmit power amplifier has an input and an output and includes: (1) a pre-filter including a charge-pump based integrator coupled to the input and a passive notch filter having a notch frequency in a band other than an FM band and (2) an output driver coupled between the passive pre-filter and the output and having PMOS and NMOS transconductors configured to receive an output from the passive filter.Type: GrantFiled: October 16, 2008Date of Patent: June 18, 2013Assignee: Texas Instruments IncorporatedInventors: Mehmet T. Ozgun, Baher S. Haroun
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Patent number: 8384457Abstract: Method and circuitry for controlling duty cycle of an input signal towards a desired value comprising a sequence of at least two inverters arranged in series and feedback circuitry. A first inverter is arranged to receive the input signal and a last inverter is arranged to output a signal having the same frequency as the input signal. The output signal is an adjusted version of the input signal. The feedback circuitry is arranged to receive the output signal and comprises a comparing and supplying means. The comparing means compares the output signal with a reference signal indicative of a desired value and generates a feedback signal based on the comparison of the output and reference signal. The supplying means supplies the feedback signal to adjust operating conditions of at least one of the inverters, such that the duty cycle of the output signal is controlled towards the desired value.Type: GrantFiled: April 6, 2011Date of Patent: February 26, 2013Assignee: Icera Inc.Inventors: Mehmet T. Ozgun, Chi Zhang, See Taur Lee
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Publication number: 20120269307Abstract: Circuitry and a method for use in a radio frequency receiver for processing a radio frequency signal are provided. The circuitry comprises a mixer arranged to receive the radio frequency signal and down-convert the received radio frequency signal to a lower frequency. The received radio frequency signal has an interference component and the interference component in the down-converted signal is within an interference frequency range. The circuitry also comprises an LC based notch filter arranged to receive the down-converted signal from the mixer, filter the down-converted signal, and output the filtered signal for processing by a baseband processing block. The LC based notch filter has a notch centered within said interference frequency range, such that the LC based notch filter is arranged to attenuate the interference component in the down-converted signal.Type: ApplicationFiled: April 19, 2011Publication date: October 25, 2012Applicant: Icera Inc.Inventors: Mehmet T. Ozgun, Essam Atalla
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Publication number: 20120256669Abstract: Method and circuitry for controlling duty cycle of an input signal towards a desired value comprising a sequence of at least two inverters arranged in series and feedback circuitry. A first inverter is arranged to receive the input signal and a last inverter is arranged to output a signal having the same frequency as the input signal. The output signal is an adjusted version of the input signal. The feedback circuitry is arranged to receive the output signal and comprises a comparing and supplying means. The comparing means compares the output signal with a reference signal indicative of a desired value and generates a feedback signal based on the comparison of the output and reference signal. The supplying means supplies the feedback signal to adjust operating conditions of at least one of the inverters, such that the duty cycle of the output signal is controlled towards the desired value.Type: ApplicationFiled: April 6, 2011Publication date: October 11, 2012Applicant: Icera Inc.Inventors: Mehmet T. Ozgun, Chi Zhang, See Taur Lee
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Patent number: 8140027Abstract: An automatic frequency tuning system and method for a transmit power amplifier. The transmit power amplifier has an antenna feed line including a series capacitor and is coupled to an output of an output driver. In one embodiment, the system includes: (1) a shunt capacitor array having a plurality of capacitors selectably couplable to the antenna feed line to apply a programmable shunt capacitance thereto, (2) a peak detector circuit couplable to nodes of the antenna feed line associated with both terminals of the series capacitor and (3) a processor configured to control the peak detector circuit to determine a ratio of voltage levels measured at the nodes at a given power level of the output driver.Type: GrantFiled: October 16, 2008Date of Patent: March 20, 2012Assignee: Texas Instruments IncorporatedInventors: Mehmet T. Ozgun, Luis E. Ossa, Brian P. Ginsburg, Srinath M. Ramaswamy, Zahir I. Parkar
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Patent number: 8121561Abstract: An automatic power tuning system and method, and a transmitter employing either the system or the method. In one embodiment, the system includes: (1) a power detector circuit coupled to an output of a transmitter, the transmitter having an integrator with a first, reference integrator current power control input, a second, integrator capacitor power control input and a plurality of driver fingers selectably employable by a third, driver finger power control input, the power detector configured to generate signals indicating an output voltage of the transmitter and (2) a digital processing circuit coupled to the power detector circuit and configured to employ the signals to determine at least near-optimum reference integrator current and integrator capacitor settings and select a number of driver fingers to employ to drive the output voltage.Type: GrantFiled: January 6, 2010Date of Patent: February 21, 2012Assignee: Texas Instruments IncorporatedInventors: Mehmet T. Ozgun, Luis E. Ossa, Brian P. Ginsburg, Srinath M. Ramaswamy, Zahir I. Parkar
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Publication number: 20100172435Abstract: An automatic power tuning system and method, and a transmitter employing either the system or the method. In one embodiment, the system includes: (1) a power detector circuit coupled to an output of a transmitter, the transmitter having an integrator with a first, reference integrator current power control input, a second, integrator capacitor power control input and a plurality of driver fingers selectably employable by a third, driver finger power control input, the power detector configured to generate signals indicating an output voltage of the transmitter and (2) a digital processing circuit coupled to the power detector circuit and configured to employ the signals to determine at least near-optimum reference integrator current and integrator capacitor settings and select a number of driver fingers to employ to drive the output voltage.Type: ApplicationFiled: January 6, 2010Publication date: July 8, 2010Applicant: Texas Instruments IncorporatedInventors: Mehmet T. Ozgun, Luis E. Ossa, Brian P. Ginsburg, Srinath M. Ramaswamy, Zahir I. Parkar
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Publication number: 20100099368Abstract: An FM-band transmit power amplifier and a method of transmitting in multiple bands. In one embodiment, the FM-band transmit power amplifier has an input and an output and includes: (1) a pre-filter including a charge-pump based integrator coupled to the input and a passive notch filter having a notch frequency in a band other than an FM band and (2) an output driver coupled between the passive pre-filter and the output and having PMOS and NMOS transconductors configured to receive an output from the passive filter.Type: ApplicationFiled: October 16, 2008Publication date: April 22, 2010Applicant: Texas Instruments IncorporatedInventors: Mehmet T. Ozgun, Baher S. Haroun
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Publication number: 20100099369Abstract: An automatic frequency tuning system and method for a transmit power amplifier. The transmit power amplifier has an antenna feed line including a series capacitor and is coupled to an output of an output driver. In one embodiment, the system includes: (1) a shunt capacitor array having a plurality of capacitors selectably couplable to the antenna feed line to apply a programmable shunt capacitance thereto, (2) a peak detector circuit couplable to nodes of the antenna feed line associated with both terminals of the series capacitor and (3) a processor configured to control the peak detector circuit to determine a ratio of voltage levels measured at the nodes at a given power level of the output driver.Type: ApplicationFiled: October 16, 2008Publication date: April 22, 2010Applicant: Texas Instruments IncorporatedInventors: Mehmet T. Ozgun, Luis E. Ossa, Brian P. Ginsburg, Srinath M. Ramaswamy, Zahir I. Parkar
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Patent number: 7436251Abstract: A circuit including two operational amplifiers connected in parallel. For the purpose of this explanation, assume that an equivalent input noise of a circuit with one operational amplifier is too high. Where two operational amplifiers, are connected in parallel, the signals from the operational amplifiers add as currents at the output node of the parallel combination.Type: GrantFiled: April 11, 2007Date of Patent: October 14, 2008Assignee: The Trustees of Columbia University in the City of New YorkInventors: Mehmet T. Ozgun, Yannis P. Tsividis