Patents by Inventor Reza KASNAVI
Reza KASNAVI 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: 11070347Abstract: Circuits and methods related to radio-frequency (RF) architectures having carrier aggregation. In some implementations, a carrier aggregation (CA) architecture can include a duplexer configured to provide duplexing functionality for a first frequency band and a second frequency band with a common antenna. The CA architecture can further include a first amplification path and a second amplification path coupled to respective ports of the duplexer, each of the first amplification path and the second amplification path configured to amplify a signal in its respective frequency band, each amplification path including a transmit/receive (TX/RX) switch configured to provide time-division duplexing (TDD) functionality for the amplified signal and a received signal. In some implementations, the first frequency band includes a B39 band, and the second frequency band includes a B41 band.Type: GrantFiled: October 10, 2019Date of Patent: July 20, 2021Assignee: Skyworks Solutions, Inc.Inventors: Ethan Chang, Roman Zbigniew Arkiszewski, John G. Freed, Edward James Anthony, Reza Kasnavi
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Publication number: 20210194511Abstract: Aspects of this disclosure relate to a front end architecture for selectively adding an external carrier aggregation band. A switch element can connect a radio frequency signal path to an antenna path through a frequency domain multiplexer, such as a diplexer, in a first mode. The switch element can connect the radio frequency path to the antenna path and bypass the frequency domain multiplexer in a second mode. The frequency domain multiplexer can be external to a front end module that include the radio frequency signal path. In the first mode, a front end system can support carrier aggregation with a band associated with circuitry implemented external to the front end module.Type: ApplicationFiled: March 10, 2021Publication date: June 24, 2021Inventors: Jen-Chien Chang, Reza Kasnavi, Roman Zbigniew Arkiszewski, Jeffrey Gordon Strahler, John G. Freed
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Publication number: 20210175910Abstract: Circuitry, modules and devices for integrating front-end carrier aggregation architecture, are disclosed. In some embodiments, a front-end architecture includes a switching assembly configured to provide switching for two or more frequency bands. In some embodiments, the switching assembly includes at least one coupler configured to couple a signal associated with the switching assembly. The front-end architecture can also include a diplexer circuit including a first filter configured to pass a first frequency band, a second filter configured to pass a second frequency band, and a first electrostatic discharge network configured to dissipate electrostatic energy associated with the first and second frequency bands from the front-end architecture.Type: ApplicationFiled: November 24, 2020Publication date: June 10, 2021Inventors: Srivatsan JAYARAMAN, Omar MUSTAFA, Yalin JIN, Ethan CHANG, Ying SHI, Reza KASNAVI, Philip H. THOMPSON, Kenneth Norman WARREN
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Patent number: 10979088Abstract: Aspects of this disclosure relate to a front end architecture for selectively adding an external carrier aggregation band. A switch element can connect a radio frequency signal path to an antenna path through a frequency domain multiplexer, such as a diplexer, in a first mode. The switch element can connect the radio frequency path to the antenna path and bypass the frequency domain multiplexer in a second mode. The frequency domain multiplexer can be external to a front end module that include the radio frequency signal path. In the first mode, a front end system can support carrier aggregation with a band associated with circuitry implemented external to the front end module.Type: GrantFiled: December 12, 2018Date of Patent: April 13, 2021Assignee: Skyworks Solutions, Inc.Inventors: Jen-Chien Chang, Reza Kasnavi, Roman Zbigniew Arkiszewski, Jeffrey Gordon Strahler, John G. Freed
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Publication number: 20210091806Abstract: Aspects of this disclosure relate to detecting power associated with an individual carrier of a carrier aggregated signal. In an embodiment, an aggregated carrier including at least a first carrier and a second carrier is provided. An indication of power of the first carrier of the aggregated carrier is detected. Separately from detecting the indication of power of the first carrier, an indication of power of the second carrier of the aggregated carrier is detected. The power associated with a radio frequency (RF) signal provided to an RF source associated with the first carrier can be adjusted based on the indication of power of the first carrier.Type: ApplicationFiled: October 1, 2020Publication date: March 25, 2021Inventors: Edward James Anthony, Reza Kasnavi, John G. Freed
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Patent number: 10855319Abstract: Aspects of this disclosure relate to methods of detecting power associated with an individual carrier of a carrier aggregated signal. According to an embodiment, a method can include detecting an indication of power of a first carrier of an aggregated carrier. The method can also include, separately from detecting power of the first carrier, detecting an indication of power of a second carrier of the aggregated carrier. A power associated with a radio frequency source, such as a power amplifier, can be adjusted based on the indication of power of the first carrier.Type: GrantFiled: October 1, 2018Date of Patent: December 1, 2020Assignee: Skyworks Solutions, Inc.Inventors: Edward James Anthony, Reza Kasnavi, John G. Freed
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Publication number: 20200366555Abstract: A reconfigurable triplexer that can support more frequency bands than a traditional triplexer is disclosed. For example, the reconfigurable triplexer can handle frequencies of several hundred megahertz up to 10 gigahertz. Further, certain implementations of the reconfigurable multiplexer can reduce or eliminate frequency dead zones that exist with traditional multiplexers. The reconfigurable triplexer includes a multi-stage filter bank capable of supporting a number of frequency bands and a bypass circuit that enables the triplexer to support a variety of sets of frequencies. For instance, unlike traditional triplexers, the reconfigurable triplexer can support both frequency bands with relatively narrow spacing and frequency bands with relatively wide spacing. Further, the inclusion of the bypass circuit enables the reduction or elimination of dead zones between supported frequencies.Type: ApplicationFiled: February 27, 2020Publication date: November 19, 2020Inventors: Yang Hou, Reza Kasnavi, Jianxing Ni, Shanshan Zhao
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Patent number: 10727893Abstract: Reconfigurable front-end module for carrier aggregation. In some embodiments, a front-end module can include a plurality of signal ports and a plurality of antenna ports. The front-end module can further include a switch assembly configured to route signals along one or more of a plurality of filtering paths between the signal ports and the antenna ports. Each of the filtering paths can include a filter, and the filtering paths can be configured to allow the antenna ports to be combined outside of the front-end module to accommodate a corresponding antenna configuration. The filtering paths can be further configured to maintain desirable filtering performance levels for different combinations of the antenna ports outside of the front-end module corresponding to the different antenna configurations.Type: GrantFiled: April 16, 2018Date of Patent: July 28, 2020Assignee: Skyworks Solutions, Inc.Inventors: Yaxing Zhang, Shaun Bryce Chamberlain, Srivatsan Jayaraman, Ethan Chang, Roman Zbigniew Arkiszewski, Reza Kasnavi, John C. Baldwin
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Publication number: 20200235768Abstract: Circuits with filters and acoustic resonators. In some embodiments, a radio-frequency circuit can include a plurality of nodes and a common node. The radio-frequency circuit can further include a signal path implemented between each of the plurality of nodes and the common node. Each corresponding signal path can include a filter having a first Q-factor value and a respective resonator having a second Q-factor value higher than the first Q-factor value.Type: ApplicationFiled: January 19, 2020Publication date: July 23, 2020Inventors: Jianxing NI, Joshua James CARON, Srivatsan JAYARAMAN, Reza KASNAVI, John G. FREED
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Publication number: 20200162229Abstract: Circuits and methods related to radio-frequency (RF) architectures having carrier aggregation. In some implementations, a carrier aggregation (CA) architecture can include a duplexer configured to provide duplexing functionality for a first frequency band and a second frequency band with a common antenna. The CA architecture can further include a first amplification path and a second amplification path coupled to respective ports of the duplexer, each of the first amplification path and the second amplification path configured to amplify a signal in its respective frequency band, each amplification path including a transmit/receive (TX/RX) switch configured to provide time-division duplexing (TDD) functionality for the amplified signal and a received signal. In some implementations, the first frequency band includes a B39 band, and the second frequency band includes a B41 band.Type: ApplicationFiled: October 10, 2019Publication date: May 21, 2020Inventors: Ethan CHANG, Roman Zbigniew ARKISZEWSKI, John G. FREED, Edward James ANTHONY, Reza KASNAVI
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Patent number: 10616053Abstract: A reconfigurable triplexer that can support more frequency bands than a traditional triplexer is disclosed. For example, the reconfigurable triplexer can handle frequencies of several hundred megahertz up to 10 gigahertz. Further, certain implementations of the reconfigurable multiplexer can reduce or eliminate frequency dead zones that exist with traditional multiplexers. The reconfigurable triplexer includes a multi-stage filter bank capable of supporting a number of frequency bands and a bypass circuit that enables the triplexer to support a variety of sets of frequencies. For instance, unlike traditional triplexers, the reconfigurable triplexer can support both frequency bands with relatively narrow spacing and frequency bands with relatively wide spacing. Further, the inclusion of the bypass circuit enables the reduction or elimination of dead zones between supported frequencies.Type: GrantFiled: December 1, 2016Date of Patent: April 7, 2020Assignee: Skyworks Solutions, Inc.Inventors: Yang Hou, Reza Kasnavi, Jianxing Ni, Shanshan Zhao
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Patent number: 10601655Abstract: A method of dynamically configuring a multiplexer that can support more frequency bands than a traditional multiplexer is disclosed. For example, the reconfigurable multiplexer can handle frequencies of several hundred megahertz up to 10 gigahertz. Further, certain implementations of the method enable the multiplexer to reduce or eliminate frequency dead zones that exist with traditional multiplexers. The reconfigurable multiplexer includes a filter bank capable of supporting a number of frequency bands and a bypass circuit that enables the multiplexer to support a variety of sets of frequencies. For instance, unlike traditional multiplexers, the reconfigurable multiplexer can support both frequency bands with relatively narrow spacing and frequency bands with relatively wide spacing. Further, the inclusion of the bypass circuit enables the reduction or elimination of dead zones between supported frequencies.Type: GrantFiled: December 1, 2016Date of Patent: March 24, 2020Assignee: Skyworks Solutions, Inc.Inventors: Yang Hou, Reza Kasnavi, Jianxing Ni, Shanshan Zhao
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Patent number: 10541713Abstract: Multiplexers having hybrid circuits with resonators. In some embodiments, a multiplexer for processing radio-frequency signals can include a plurality of nodes, a common node, and a signal path implemented between each of the plurality of nodes and the common node. Each signal path can include a filter, and each of at least some of the signal paths can further include a resonator coupled with the corresponding filter. A signal path with the resonator provides a sharper notch profile for a radio-frequency signal than a signal path without the resonator.Type: GrantFiled: June 28, 2016Date of Patent: January 21, 2020Assignee: Skyworks Solutions, Inc.Inventors: Jianxing Ni, Joshua James Caron, Srivatsan Jayaraman, Reza Kasnavi, John G. Freed
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Publication number: 20200014338Abstract: The disclosure relates to a wideband, tunable hybrid-based combiner for a Doherty power amplifier architecture. The architecture includes two parallel power amplifiers: a carrier amplifier and a peaking amplifier. The peaking amplifier modulates the load seen by the carrier amplifier, allowing the carrier amplifier to remain in high-efficiency, saturated operation even at back-off. This load modulation can be achieved using impedance matching networks having an impedance matched to a specific frequency. Typically, a multi-mode/multi-band power amplifier module that does not include a tunable impedance circuit as disclosed herein, several Doherty power amplifier modules (each of which uses two amplifiers) would be used to cover several bands, which may make implementation costly and/or impractical. Thus, the architectures described herein provide wideband amplification using a Doherty amplifier configuration.Type: ApplicationFiled: July 16, 2019Publication date: January 9, 2020Inventors: Kunal DATTA, Reza KASNAVI, Aleksey A. LYALIN
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Patent number: 10469316Abstract: A reconfigurable multiplexer that can support more frequency bands than a traditional multiplexer is disclosed. For example, the reconfigurable multiplexer can handle frequencies of several hundred megahertz up to 10 gigahertz. Further, certain implementations of the reconfigurable multiplexer can reduce or eliminate frequency dead zones that exist with traditional multiplexers. The reconfigurable multiplexer includes a filter bank capable of supporting a number of frequency bands and a bypass circuit that enables the multiplexer to support a variety of sets of frequencies. For instance, unlike traditional multiplexers, the reconfigurable multiplexer can support both frequency bands with relatively narrow spacing and frequency bands with relatively wide spacing. Further, the inclusion of the bypass circuit enables the reduction or elimination of dead zones between supported frequencies.Type: GrantFiled: December 1, 2016Date of Patent: November 5, 2019Assignee: Skyworks Solutions, Inc.Inventors: Yang Hou, Reza Kasnavi, Jianxing Ni, Shanshan Zhao
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Patent number: 10447458Abstract: Circuits and methods related to radio-frequency (RF) architectures having carrier aggregation. In some implementations, a carrier aggregation (CA) architecture can include a duplexer configured to provide duplexing functionality for a first frequency band and a second frequency band with a common antenna. The CA architecture can further include a first amplification path and a second amplification path coupled to respective ports of the duplexer, each of the first amplification path and the second amplification path configured to amplify a signal in its respective frequency band, each amplification path including a transmit/receive (TX/RX) switch configured to provide time-division duplexing (TDD) functionality for the amplified signal and a received signal. In some implementations, the first frequency band includes a B39 band, and the second frequency band includes a B41 band.Type: GrantFiled: August 12, 2015Date of Patent: October 15, 2019Assignee: Skyworks Solutions, Inc.Inventors: Ethan Chang, Roman Zbigniew Arkiszewski, John G Freed, Edward James Anthony, Reza Kasnavi
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Patent number: 10355647Abstract: Doherty power amplifier combiner with tunable impedance termination circuit. A signal combiner can include a balun transformer circuit having a first coil and a second coil. The first coil can be implemented between a first port and a second port. The second coil can be implemented between a third port and a fourth port. The first port and the third port can be coupled by a first capacitor. The second port and fourth port can be coupled by a second capacitor. The first port can be configured to receive a first signal. The fourth port can be configured to receive a second signal. The second port can be configured to yield a combination of the first signal and the second signal. The signal combiner can include a termination circuit that couples the third port to a ground. The termination circuit can include a tunable impedance circuit.Type: GrantFiled: October 24, 2017Date of Patent: July 16, 2019Assignee: SKYWORKS SOLUTIONS, INC.Inventors: Kunal Datta, Reza Kasnavi, Aleksey A. Lyalin
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Publication number: 20190190548Abstract: Aspects of this disclosure relate to a front end architecture for selectively adding an external carrier aggregation band. A switch element can connect a radio frequency signal path to an antenna path through a frequency domain multiplexer, such as a diplexer, in a first mode. The switch element can connect the radio frequency path to the antenna path and bypass the frequency domain multiplexer in a second mode. The frequency domain multiplexer can be external to a front end module that include the radio frequency signal path. In the first mode, a front end system can support carrier aggregation with a band associated with circuitry implemented external to the front end module.Type: ApplicationFiled: December 12, 2018Publication date: June 20, 2019Inventors: Jen-Chien Chang, Reza Kasnavi, Roman Zbigniew Arkiszewski, Jeffrey Gordon Strahler, John G. Freed
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Publication number: 20190103890Abstract: Aspects of this disclosure relate to detecting power associated with an individual carrier of a carrier aggregated signal. In an embodiment, an aggregated carrier including at least a first carrier and a second carrier is provided. An indication of power of the first carrier of the aggregated carrier is detected. Separately from detecting the indication of power of the first carrier, an indication of power of the second carrier of the aggregated carrier is detected. The power associated with a radio frequency (RF) signal provided to an RF source associated with the first carrier can be adjusted based on the indication of power of the first carrier.Type: ApplicationFiled: October 1, 2018Publication date: April 4, 2019Inventors: Edward James Anthony, Reza Kasnavi, John G. Freed
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Publication number: 20190028136Abstract: Reconfigurable front-end module for carrier aggregation. In some embodiments, a front-end module can include a plurality of signal ports and a plurality of antenna ports. The front-end module can further include a switch assembly configured to route signals along one or more of a plurality of filtering paths between the signal ports and the antenna ports. Each of the filtering paths can include a filter, and the filtering paths can be configured to allow the antenna ports to be combined outside of the front-end module to accommodate a corresponding antenna configuration. The filtering paths can be further configured to maintain desirable filtering performance levels for different combinations of the antenna ports outside of the front-end module corresponding to the different antenna configurations.Type: ApplicationFiled: April 16, 2018Publication date: January 24, 2019Inventors: Yaxing ZHANG, Shaun Bryce CHAMBERLAIN, Srivatsan JAYARAMAN, Ethan CHANG, Roman Zbigniew ARKISZEWSKI, Reza KASNAVI, John C. BALDWIN