Patents by Inventor Sasan Bakhtiari
Sasan Bakhtiari 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: 20230314192Abstract: Monitoring fluid flow of high temperature materials is required across a wide range of applications. A device for performing flow measurements of high temperature materials includes a resonant chamber having at least one inner surface forming a hollow resonant cavity. A deformable membrane has a first side forming a wall of the hollow resonant cavity, and a second side in contact with an external environment in which the resonant chamber is disposed. A waveguide is physically coupled to the resonant cavity, with the waveguide configured to provide to the resonant chamber a band of wavelengths of radiation.Type: ApplicationFiled: March 31, 2022Publication date: October 5, 2023Inventors: Alexander Heifetz, Sasan Bakhtiari
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Publication number: 20180262278Abstract: The invention provides a system for transmitting a signal. The signal uses at least one metallic transmission medium to which at least a pair of transducers is attached. Each transducer contains an interface and connection to an external signal capable of sending and receiving a signal. Each transducer converts the external signal to an ultrasonic version to be sent over the medium and also converts a received ultrasonic version back to an external signal.Type: ApplicationFiled: April 6, 2018Publication date: September 13, 2018Inventors: Alexander Heifetz, Richard B. Vilim, Sasan Bakhtiari
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Patent number: 9103904Abstract: A mixerless high frequency interferometric Doppler radar system and methods has been invented, numerically validated and experimentally tested. A continuous wave source, phase modulator (e.g., a continuously oscillating reference mirror) and intensity detector are utilized. The intensity detector measures the intensity of the combined reflected Doppler signal and the modulated reference beam. Rigorous mathematics formulas have been developed to extract bot amplitude and phase from the measured intensity signal. Software in Matlab has been developed and used to extract such amplitude and phase information from the experimental data. Both amplitude and phase are calculated and the Doppler frequency signature of the object is determined.Type: GrantFiled: April 30, 2013Date of Patent: August 11, 2015Assignee: UChicago Argonne, LLCInventors: Shaolin Liao, Nachappa Gopalsami, Sasan Bakhtiari, Apostolos C. Raptis, Thomas Elmer
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Publication number: 20140320864Abstract: A mixerless high frequency interferometric Doppler radar system and methods has been invented, numerically validated and experimentally tested. A continuous wave source, phase modulator (e.g., a continuously oscillating reference mirror) and intensity detector are utilized. The intensity detector measures the intensity of the combined reflected Doppler signal and the modulated reference beam. Rigorous mathematics formulas have been developed to extract bot amplitude and phase from the measured intensity signal. Software in Matlab has been developed and used to extract such amplitude and phase information from the experimental data. Both amplitude and phase are calculated and the Doppler frequency signature of the object is determined.Type: ApplicationFiled: April 30, 2013Publication date: October 30, 2014Applicant: UChicago Argonne LLCInventors: Shaolin Liao, Nachappa Gopalsami, Sasan Bakhtiari, Apostolos C. Raptis, Thomas Elmar
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Patent number: 8686362Abstract: A millimeter wavelength (MMW) measurement system for remote detection of object characteristics and methods for detecting such characteristics. The MMW measurement system comprises a front-end and an optional signal conditioning component. The MMW front-end includes an oscillator, a transceiver portion, and an antenna for focusing a detection component comprising micrometer level wavelength electromagnetic radiation onto the object. A portion of the electromagnetic radiation reflected by the object is received by the MMW measurement system, which is indicative of a displacement of the object. The MMW system may be configured to detect micrometer level displacement of the object disposed tens of meters from the MMW measurement system. In various embodiments the object may be a natural object, including a human, and the displacement may be indicative of a heart rate and/or a respiratory function.Type: GrantFiled: April 29, 2010Date of Patent: April 1, 2014Assignee: UChicago Argonne, LLCInventors: Sasan Bakhtiari, Nachappa Gopalsami, Thomas W. Elmer, Apostolos C. Raptis
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Patent number: 7888645Abstract: Systems and methods for the passive measurement of spectral lines from the absorption or emission by polar molecules. The system includes mmW front-end assembly, back-end electronics, and data acquisition hardware and software was assembled. The method relates to methods for processing multi-channel radiometric data from passive mmW detection systems.Type: GrantFiled: February 16, 2009Date of Patent: February 15, 2011Assignee: UChicago Argonne LLPInventors: Nachappa Gopalsami, Sasan Bakhtiari, Apostolos C. Raptis, Thomas W. Elmer
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Publication number: 20100290063Abstract: A millimeter wavelength (MMW) measurement system for remote detection of object characteristics and methods for detecting such characteristics. The MMW measurement system comprises a front-end and an optional signal conditioning component. The MMW front-end includes an oscillator, a transceiver portion, and an antenna for focusing a detection component comprising micrometer level wavelength electromagnetic radiation onto the object. A portion of the electromagnetic radiation reflected by the object is received by the MMW measurement system, which is indicative of a displacement of the object. The MMW system may be configured to detect micrometer level displacement of the object disposed tens of meters from the MMW measurement system. In various embodiments the object may be a natural object, including a human, and the displacement may be indicative of a heart rate and/or a respiratory function.Type: ApplicationFiled: April 29, 2010Publication date: November 18, 2010Inventors: Sasan BAKHTIARI, Nachappa Gopalsami, Thomas W. Elmer, Apostolos C. Raptis
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Publication number: 20090216500Abstract: Systems and methods for the passive measurement of spectral lines from the absorption or emission by polar molecules. The system includes mmW front-end assembly, back-end electronics, and data acquisition hardware and software was assembled. The method relates to methods for processing multi-channel radiometric data from passive mmW detection systems.Type: ApplicationFiled: February 16, 2009Publication date: August 27, 2009Inventors: Nachappa Gopalsami, Sasan Bakhtiari, Apostolos C. Raptis, Thomas W. Elmer
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Patent number: 7495218Abstract: Systems and methods for the passive measurement of spectral lines from the absorption or emission by polar molecules. The system includes mmW front-end assembly, back-end electronics, and data acquisition hardware and software was assembled. The method relates to methods for processing multi-channel radiometric data from passive mmW detection systems.Type: GrantFiled: April 20, 2006Date of Patent: February 24, 2009Assignee: U Chicago Argonne LLCInventors: Nachappa Gopalsami, Sasan Bakhtiari, Apostolos C. Raptis, Thomas W. Elmer
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Publication number: 20070246652Abstract: Systems and methods for the passive measurement of spectral lines from the absorption or emission by polar molecules. The system includes mmW front-end assembly, back-end electronics, and data acquisition hardware and software was assembled. The method relates to methods for processing multi-channel radiometric data from passive mmW detection systems.Type: ApplicationFiled: April 20, 2006Publication date: October 25, 2007Inventors: Nachappa Gopalsami, Sasan Bakhtiari, Apostolos Raptis, Thomas Elmer
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Patent number: 6005397Abstract: The thickness of the layers of rubber covering the steel belts within a tire can be measured by transmitting a microwave signal toward the outer surface of the tire and measuring the phase shift of the signal reflected by the tire. In the preferred embodiment, a waveguide is used to direct the microwave signal toward the tire. A standing wave is created within the waveguide by interference between the transmitted microwave signal and the microwave signal reflected from the tire. A series of crystal detectors mounted along the length of the waveguide measure the standing wave. A processor calculates the phase of the reflection coefficient, and determines the thickness of the rubber layer as a predetermined function of the phase. By proper selection of the microwave frequency and the spacing between the waveguide and the tire, the rubber layer thickness can be uniquely determined as a function of phase for any range of rubber thicknesses likely to be encountered in a tire.Type: GrantFiled: August 16, 1994Date of Patent: December 21, 1999Assignee: Colorado State University Research FoundationInventors: Reza Zoughi, Sasan Bakhtiari
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Patent number: 5886534Abstract: A millimeter wave sensor is provided for non-destructive inspection of thin sheet dielectric materials. The millimeter wave sensor includes a Gunn diode oscillator (GDO) source generating a mill meter wave electromagnetic energy signal having a single frequency. A heater is coupled to the GDO source for stabilizing the single frequency. A small size antenna is coupled to the GDO source for transmitting the millimeter wave electromagnetic energy signal to a sample material and for receiving a reflected millimeter wave electromagnetic energy signal from the sample material. Ferrite circulator isolators coupled between the GDO source and the antenna separate the millimeter wave electromagnetic energy signal into transmitted and received electromagnetic energy signal components and a detector detects change in both amplitude and phase of the transmitted and received electromagnetic energy signal components.Type: GrantFiled: September 9, 1997Date of Patent: March 23, 1999Assignee: The University of ChicagoInventors: Sasan Bakhtiari, Nachappa Gopalsami, Apostolos C. Raptis
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Patent number: 5468964Abstract: A millimeter-wave sensor for detecting and measuring effluents from processing plants either remotely or on-site includes a high frequency signal source for transmitting frequency-modulated continuous waves in the millimeter or submillimeter range with a wide sweep capability and a computer-controlled detector for detecting a plurality of species of effluents on a real time basis. A high resolution spectrum of an effluent, or effluents, is generated by a deconvolution of the measured spectra resulting in a narrowing of the line widths by 2 or 3 orders of magnitude as compared with the pressure broadened spectra detected at atmospheric pressure for improved spectral specificity and measurement sensitivity. The sensor is particularly adapted for remote monitoring such as where access is limited or sensor cost restricts multiple sensors as well as for large area monitoring under nearly all weather conditions.Type: GrantFiled: June 20, 1994Date of Patent: November 21, 1995Assignee: The University of ChicagoInventors: Nachappa Gopalsami, Sasan Bakhtiari, Apostolos C. Raptis, Stephen L. Dieckman
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Patent number: 5216372Abstract: The thickness of the layers of rubber covering the steel belts within a tire can be measured by transmitting a microwave signal toward the outer surface of the tire and measuring the phase shift of the signal reflected by the tire. In the preferred embodiment, a waveguide is used to direct the microwave signal toward the tire. A standing wave is created within the waveguide by interference between the transmitted microwave signal and the microwave signal reflected from the tire. A series of crystal detectors mounted along the length of the waveguide measure the standing wave. A processor calculates the phase of the reflection coefficient, and determines the thickness of the rubber layer as a predetermined function of the phase. By proper selection of the microwave frequency and the spacing between the waveguide and the tire, the rubber layer thickness can be uniquely determined as a function of phase for any range of rubber thicknesses likely to be encountered in a tire.Type: GrantFiled: October 13, 1992Date of Patent: June 1, 1993Assignee: Colorado State University Research FoundationInventors: Reza Zoughi, Sasan Bakhtiari