Patents by Inventor Zhaoyang C. Wang
Zhaoyang C. Wang 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: 11677128Abstract: A method includes receiving a radio frequency (RF) input signal using at least one non-reciprocal circulator. The method also includes generating an RF output signal using at least one of one or more reflective circuit elements. Each reflective circuit element is configured to receive an RF signal from the at least one non-reciprocal circulator and to provide a modified RF signal to the at least one non-reciprocal circulator. The RF output signal represents the RF input signal as modified by the at least one of the one or more reflective circuit elements.Type: GrantFiled: May 4, 2021Date of Patent: June 13, 2023Assignee: Raytheon CompanyInventors: Ajay Subramanian, Zhaoyang C. Wang, Jason C. Soric, Matthew A. Morton
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Patent number: 11522525Abstract: A finite impulse response (FIR) filter including an input of the FIR filter that receives an RF input signal, a clock input configured to receive a clock signal, an output of the FIR filter that provides a filtered output signal, a plurality of signal paths including a plurality of sample-and-hold circuits and a plurality of multipliers arranged in parallel, each signal path including a respective sample-and-hold circuit and a respective multiplier being configured to receive the RF input signal and the clock signal to provide a modulated output signal, an adder configured to receive n modulated output signals from the plurality of signal paths and combine the n modulated output signals to produce the filtered output signal, and a controller.Type: GrantFiled: May 28, 2020Date of Patent: December 6, 2022Assignee: RAYTHEON COMPANYInventors: Ajay Subramanian, Zhaoyang C. Wang, Matthew A. Morton, Jack Holloway, John Cangeme
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Patent number: 11456515Abstract: A method includes receiving a radio frequency (RF) input signal using at least one non-reciprocal circulator. The method also includes generating an RF output signal using at least one of multiple reflective filter elements. Each reflective filter element is configured to receive an RF signal from the at least one non-reciprocal circulator and to provide a filtered RF signal to the at least one non-reciprocal circulator. The reflective filter elements include amplitude change reflectors configured to modify amplitudes of the RF signal at different frequencies. The RF output signal represents the RF input signal as modified by the at least one of the reflective filter elements.Type: GrantFiled: May 4, 2021Date of Patent: September 27, 2022Assignee: Raytheon CompanyInventors: Zhaoyang C. Wang, Ajay Subramanian, Jason C. Soric, Matthew A. Morton
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Publication number: 20210384599Abstract: A method includes receiving a radio frequency (RF) input signal using at least one non-reciprocal circulator. The method also includes generating an RF output signal using at least one of multiple reflective filter elements. Each reflective filter element is configured to receive an RF signal from the at least one non-reciprocal circulator and to provide a filtered RF signal to the at least one non-reciprocal circulator. The reflective filter elements include amplitude change reflectors configured to modify amplitudes of the RF signal at different frequencies. The RF output signal represents the RF input signal as modified by the at least one of the reflective filter elements.Type: ApplicationFiled: May 4, 2021Publication date: December 9, 2021Inventors: Zhaoyang C. Wang, Ajay Subramanian, Jason C. Soric, Matthew A. Morton
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Publication number: 20210384598Abstract: A method includes receiving a radio frequency (RF) input signal using at least one non-reciprocal circulator. The method also includes generating an RF output signal using at least one of one or more reflective circuit elements. Each reflective circuit element is configured to receive an RF signal from the at least one non-reciprocal circulator and to provide a modified RF signal to the at least one non-reciprocal circulator. The RF output signal represents the RF input signal as modified by the at least one of the one or more reflective circuit elements.Type: ApplicationFiled: May 4, 2021Publication date: December 9, 2021Inventors: Ajay Subramanian, Zhaoyang C. Wang, Jason C. Soric, Matthew A. Morton
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Publication number: 20210376818Abstract: A finite impulse response (FIR) filter including an input of the FIR filter that receives an RF input signal, a clock input configured to receive a clock signal, an output of the FIR filter that provides a filtered output signal, a plurality of signal paths including a plurality of sample-and-hold circuits and a plurality of multipliers arranged in parallel, each signal path including a respective sample-and-hold circuit and a respective multiplier being configured to receive the RF input signal and the clock signal to provide a modulated output signal, an adder configured to receive n modulated output signals from the plurality of signal paths and combine the n modulated output signals to produce the filtered output signal, and a controller.Type: ApplicationFiled: May 28, 2020Publication date: December 2, 2021Inventors: Ajay Subramanian, Zhaoyang C. Wang, Matthew A. Morton, Jack Holloway, John Cangeme
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Patent number: 10277176Abstract: A circuit having an amplifier, comprising: a depletion mode transistor having a source electrode coupled to a reference potential; a drain electrode coupled to a potential more positive than the reference potential; and a gate electrode for coupling to an input signal. The circuit includes a bias circuit, comprising: a current source; and biasing circuitry coupled to the current source and between the potential more positive than the reference potential and a potential more negative than the reference potential. A control circuit is connected to the current source for controlling the amount of current produced by the current source to the biasing circuitry.Type: GrantFiled: February 9, 2018Date of Patent: April 30, 2019Assignee: Raytheon CompanyInventors: John P. Bettencourt, Alan J. Bielunis, Istvan Rodriguez, Zhaoyang C. Wang
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Publication number: 20180167041Abstract: A circuit having an amplifier, comprising: a depletion mode transistor having a source electrode coupled to a reference potential; a drain electrode coupled to a potential more positive than the reference potential; and a gate electrode for coupling to an input signal. The circuit includes a bias circuit, comprising: a current source; and biasing circuitry coupled to the current source and between the potential more positive than the reference potential and a potential more negative than the reference potential. A control circuit is connected to the current source for controlling the amount of current produced by the current source to the biasing circuitry.Type: ApplicationFiled: February 9, 2018Publication date: June 14, 2018Applicant: Raytheon CompanyInventors: John P. Bettencourt, Alan J. Bielunis, Istvan Rodriguez, Zhaoyang C. Wang
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Patent number: 9960740Abstract: A circuit having an amplifier, comprising: a depletion mode transistor having a source electrode coupled to a reference potential; a drain electrode coupled to a potential more positive than the reference potential; and a gate electrode for coupling to an input signal. The circuit includes a bias circuit, comprising: a current source; and biasing circuitry coupled to the current source and between the potential more positive than the reference potential and a potential more negative than the reference potential. A control circuit is connected to the current source for controlling the amount of current produced by the current source to the biasing circuitry.Type: GrantFiled: June 7, 2016Date of Patent: May 1, 2018Assignee: Raytheon CompanyInventors: John P. Bettencourt, Alan J. Bielunis, Istvan Rodriguez, Zhaoyang C. Wang
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Patent number: 9634703Abstract: A method and receiver for detecting a signal wherein the signal is encoded the signal with a pair of spaced predetermined frequencies and wherein energy is detected in each of the pair of predetermined frequencies and in a predetermined frequency between the pair of predetermined frequencies. Energy detected in each of the pair of predetermined frequencies is compared with the energy detected in the predetermined frequency between the pair of predetermined frequencies. The detecting includes passing the encoded signal through narrow band filters, each one of the filters being tuned to a corresponding one of the pair of predetermined frequencies and the predetermined frequency between the pair of predetermined frequencies.Type: GrantFiled: July 29, 2015Date of Patent: April 25, 2017Assignee: RAYTHEON COMPANYInventors: Zhaoyang C. Wang, Steven M. Lardizabal
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Publication number: 20170033817Abstract: A method and receiver for detecting a signal wherein the signal is encoded the signal with a pair of spaced predetermined frequencies and wherein energy is detected in each of the pair of predetermined frequencies and in a predetermined frequency between the pair of predetermined frequencies. Energy detected in each of the pair of predetermined frequencies is compared with the energy detected in the predetermined frequency between the pair of predetermined frequencies. The detecting includes passing the encoded signal through narrow band filters, each one of the filters being tuned to a corresponding one of the pair of predetermined frequencies and the predetermined frequency between the pair of predetermined frequencies.Type: ApplicationFiled: July 29, 2015Publication date: February 2, 2017Applicant: RAYTHEON COMPANYInventors: Zhaoyang C. Wang, Steven M. Lardizabal
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Publication number: 20160373074Abstract: A circuit having an amplifier, comprising: a depletion mode transistor having a source electrode coupled to a reference potential; a drain electrode coupled to a potential more positive than the reference potential; and a gate electrode for coupling to an input signal. The circuit includes a bias circuit, comprising: a current source; and biasing circuitry coupled to the current source and between the potential more positive than the reference potential and a potential more negative than the reference potential. A control circuit is connected to the current source for controlling the amount of current produced by the current source to the biasing circuitry.Type: ApplicationFiled: June 7, 2016Publication date: December 22, 2016Applicant: Raytheon CompanyInventors: John P. Bettencourt, Alan J. Bielunis, Istvan Rodriguez, Zhaoyang C. Wang