Patents by Inventor Masoud Koochakzadeh
Masoud Koochakzadeh 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: 10763902Abstract: Systems and methods are provided for utilizing remote spectrum analysis of transmit bands in communication systems. A transmit band spectrum corresponding to a transmit band used in transmitting signals may be captured. The captured transmit band spectrum may be processed, and based on such processing presence of noise, distortion, interference, etc. in the transmit band spectrum may be detected, wherein the noise, distortion, interference, etc. may be introduced by one or more other systems sharing a medium used in the transmitting of the signals. One or more characteristic associated with each instance of detected noise, distortion, interference, etc. may be determined. Reporting information, related to the detection of noise, distortion, interference, etc. and/or to the determined one or more characteristics associated with each instance of detected noise, distortion, interference, etc., may be determined, and the reported information may be sent to at least one remote system.Type: GrantFiled: December 22, 2016Date of Patent: September 1, 2020Assignee: MaxLinear, Inc.Inventors: Rahul Bhatia, Kenneth Scott Walley, Masoud Koochakzadeh, Jesson John
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Publication number: 20170187400Abstract: Systems and methods are provided for utilizing remote spectrum analysis of transmit bands in communication systems. A transmit band spectrum corresponding to a transmit band used in transmitting signals may be captured. The captured transmit band spectrum may be processed, and based on such processing presence of noise, distortion, interference, etc. in the transmit band spectrum may be detected, wherein the noise, distortion, interference, etc. may be introduced by one or more other systems sharing a medium used in the transmitting of the signals. One or more characteristic associated with each instance of detected noise, distortion, interference, etc. may be determined. Reporting information, related to the detection of noise, distortion, interference, etc. and/or to the determined one or more characteristics associated with each instance of detected noise, distortion, interference, etc., may be determined, and the reported information may be sent to at least one remote system.Type: ApplicationFiled: December 22, 2016Publication date: June 29, 2017Inventors: Rahul Bhatia, Kenneth Scott Walley, Masoud Koochakzadeh, Jesson John
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Patent number: 9065453Abstract: A signal distribution network has segments that each have a buffer circuit, a transmission line coupled to the buffer circuit, an inductor coupled to the buffer circuit through the transmission line, and a variable capacitance circuit coupled to the inductor and coupled to the buffer circuit through the transmission line. A capacitance of the variable capacitance circuit is set to determine a phase and an amplitude of a signal transmitted through the transmission line. A signal distribution network can include a phase detector, a loop filter circuit, and a resonant delay circuit. The phase detector compares a phase of a first periodic signal to a phase of a second periodic signal. The resonant delay circuit has a variable impedance circuit having an impedance that varies based on changes in an output signal of the loop filter circuit.Type: GrantFiled: November 25, 2013Date of Patent: June 23, 2015Assignee: Silicon Image, Inc.Inventors: Farshid Aryanfar, Hae-Chang Lee, Kun-Yung Chang, Ting Wu, Carl Werner, Masoud Koochakzadeh
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Publication number: 20140333356Abstract: A signal distribution network has segments that each have a buffer circuit, a transmission line coupled to the buffer circuit, an inductor coupled to the buffer circuit through the transmission line, and a variable capacitance circuit coupled to the inductor and coupled to the buffer circuit through the transmission line. A capacitance of the variable capacitance circuit is set to determine a phase and an amplitude of a signal transmitted through the transmission line. A signal distribution network can include a phase detector, a loop filter circuit, and a resonant delay circuit. The phase detector compares a phase of a first periodic signal to a phase of a second periodic signal. The resonant delay circuit has a variable impedance circuit having an impedance that varies based on changes in an output signal of the loop filter circuit.Type: ApplicationFiled: November 25, 2013Publication date: November 13, 2014Applicant: Rambus Inc.Inventors: Farshid Aryanfar, Hae-Chang Lee, Kun-Yung Chang, Ting Wu, Carl Werner, Masoud Koochakzadeh
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Patent number: 8610474Abstract: A signal distribution network has segments that each have a buffer circuit, a transmission line coupled to the buffer circuit, an inductor coupled to the buffer circuit through the transmission line, and a variable capacitance circuit coupled to the inductor and coupled to the buffer circuit through the transmission line. A capacitance of the variable capacitance circuit is set to determine a phase and an amplitude of a signal transmitted through the transmission line. A signal distribution network can include a phase detector, a loop filter circuit, and a resonant delay circuit. The phase detector compares a phase of a first periodic signal to a phase of a second periodic signal. The resonant delay circuit has a variable impedance circuit having an impedance that varies based on changes in an output signal of the loop filter circuit.Type: GrantFiled: October 9, 2010Date of Patent: December 17, 2013Assignee: Rambus Inc.Inventors: Farshid Aryanfar, Hae-Chang Lee, Kun-Yung Chang, Ting Wu, Carl Werner, Masoud Koochakzadeh
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Patent number: 8446232Abstract: Devices and methods for tunable RF filtering. Multiple bimodal filter stages are used within a filter device to provide for tunable frequency response of the filter device. The use of M sequential bimodal filter stages, each having different frequency resolutions, may allow for 2M possible modes of operation.Type: GrantFiled: June 1, 2010Date of Patent: May 21, 2013Assignee: Arizona Board of Regents for and on Behalf of Arizona State UniversityInventors: Abbas Abbaspour-Tamijani, Masoud Koochakzadeh
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Publication number: 20120306576Abstract: An amplifier for providing improved third-order intermodulation (IM3) cancelation. The amplifier may comprise a main branch for amplifying input signals and an auxiliary branch for generating IM3 signals that are equal to corresponding IM3 components resulting from amplifying input signals via the main branch, with both of the main and the auxiliary branches being configured as differential circuits. The differential implementation may result in the auxiliary branch generating IM3 distortion signals with minimal or no non-IM3 signals. Each of the main and the auxiliary branches may comprise at least two transistor elements. Separate bias current sources may be applied to each of the main and the auxiliary branches. Operation of the auxiliary branch may be controlled by adjusting one or both of the bias current sources. Outputs of the main and the auxiliary branches may be cross-coupled, to invert a sign of IM3 distortion signals generated via the auxiliary branch.Type: ApplicationFiled: May 31, 2012Publication date: December 6, 2012Inventors: Vamsi Paidi, Masoud Koochakzadeh
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Publication number: 20120187988Abstract: A signal distribution network has segments that each have a buffer circuit, a transmission line coupled to the buffer circuit, an inductor coupled to the buffer circuit through the transmission line, and a variable capacitance circuit coupled to the inductor and coupled to the buffer circuit through the transmission line. A capacitance of the variable capacitance circuit is set to determine a phase and an amplitude of a signal transmitted through the transmission line. A signal distribution network can include a phase detector, a loop filter circuit, and a resonant delay circuit. The phase detector compares a phase of a first periodic signal to a phase of a second periodic signal. The resonant delay circuit has a variable impedance circuit having an impedance that varies based on changes in an output signal of the loop filter circuit.Type: ApplicationFiled: October 9, 2010Publication date: July 26, 2012Applicant: RAMBUS INC.Inventors: Farshid Aryanfar, Hae-Chang Lee, Kun-Yung Chang, Ting Wu, Carl Werner, Masoud Koochakzadeh
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Publication number: 20100311383Abstract: Devices and methods for tunable RF filtering. Multiple bimodal filter stages are used within a filter device to provide for tunable frequency response of the filter device. The use of M sequential bimodal filter stages, each having different frequency resolutions, may allow for 2M possible modes of operation.Type: ApplicationFiled: June 1, 2010Publication date: December 9, 2010Inventors: Abbas Abbaspour-Tamijani, Masoud Koochakzadeh
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Patent number: 7724110Abstract: A switchable bandpass filter includes a coupled line segment (comb) including a plurality of coupled transmission lines of substantially equal lengths that are each connected or otherwise coupled to the common RF ground at their first end, a plurality of adjustable capacitors each coupled proximate a second end of respective ones of the transmission lines, and a plurality of shunt switches coupled to points along a length of each of the transmission lines. Shunt switches may be implemented by various device technologies including MEMS and FET switches and PIN diodes. The adjustable capacitors may be implemented as an array or tree of switched capacitors using suitable switching components (e.g., as previously enumerated) or by other suitable electrically controllable devices such as varactors or varactor arrays. A differential switchable filter may be formed by the symmetric repetition of individual bandpass filter modules.Type: GrantFiled: October 1, 2007Date of Patent: May 25, 2010Assignee: Arizona Board of Regents for and on behalf of Arizona State UniversityInventors: Abbas Abbaspour-Tamijani, Masoud Koochakzadeh
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Publication number: 20080111652Abstract: A switchable bandpass filter includes a coupled line segment (comb) including a plurality of coupled transmission lines of substantially equal lengths that are each connected or otherwise coupled to the common RF ground at their first end, a plurality of adjustable capacitors each coupled proximate a second end of respective ones of the transmission lines, and a plurality of shunt switches coupled to points along a length of each of the transmission lines. Shunt switches may be implemented by various device technologies including MEMS and FET switches and PIN diodes. The adjustable capacitors may be implemented as an array or tree of switched capacitors using suitable switching components (e.g., as previously enumerated) or by other suitable electrically controllable devices such as varactors or varactor arrays. A differential switchable filter may be formed by the symmetric repetition of individual bandpass filter modules.Type: ApplicationFiled: October 1, 2007Publication date: May 15, 2008Inventors: Abbas Abbaspour-Tamijani, Masoud Koochakzadeh