Patents by Inventor Sam Mandegaran
Sam Mandegaran 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: 10855246Abstract: A radio frequency (RF) duplexer may comprise quadrature hybrid couplers and RF filters. The isolation and insertion loss of such RF duplexer, often limited by practical imperfections such as component mismatches and layout asymmetries, may be improved by including capacitors in the RF duplexer. A tunable or reconfigurable RF duplexer with high isolation and low insertion loss, under all desired settings, may be realized by adding tunable capacitors to the tunable RF duplexer which includes the quadrature hybrid couplers and tunable RF filters.Type: GrantFiled: September 21, 2017Date of Patent: December 1, 2020Assignee: Qorvo US, Inc.Inventor: Sam Mandegaran
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Patent number: 10673472Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: GrantFiled: October 25, 2019Date of Patent: June 2, 2020Assignee: Qorvo US, Inc.Inventor: Sam Mandegaran
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Patent number: 10673471Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: GrantFiled: October 24, 2019Date of Patent: June 2, 2020Assignee: Qorvo US, Inc.Inventor: Sam Mandegaran
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Patent number: 10637513Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: GrantFiled: October 24, 2019Date of Patent: April 28, 2020Assignee: Qorvo US, Inc.Inventor: Sam Mandegaran
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Publication number: 20200059255Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: ApplicationFiled: October 25, 2019Publication date: February 20, 2020Inventor: Sam Mandegaran
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Publication number: 20200059254Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: ApplicationFiled: October 24, 2019Publication date: February 20, 2020Inventor: Sam Mandegaran
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Patent number: 10560129Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: GrantFiled: July 16, 2019Date of Patent: February 11, 2020Assignee: Qorvo US, Inc.Inventor: Sam Mandegaran
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Patent number: 10530398Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: GrantFiled: July 16, 2019Date of Patent: January 7, 2020Assignee: Qorvo US, Inc.Inventor: Sam Mandegaran
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Patent number: 10476530Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: GrantFiled: September 30, 2016Date of Patent: November 12, 2019Assignee: Qorvo US, Inc.Inventor: Sam Mandegaran
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Publication number: 20190341945Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: ApplicationFiled: July 16, 2019Publication date: November 7, 2019Inventor: Sam Mandegaran
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Publication number: 20180309464Abstract: A radio frequency (RF) multiplexer includes, for example, a common port, a first port for a first frequency band, a second port for a second frequency band, and a third port for a third frequency band. The RF multiplexer also includes, for example, a first quadrature hybrid coupler (QHC), a second QHC and a third QHC. A coupling of the first QHC, a first pair of filters, and the second QHC separates the first frequency band and the second frequency band from the common port to the first port and to the second port, respectively. A coupling of the first QHC, a second pair of filters, and the third QHC separates the first frequency band and the third frequency band from the common port to the first port and to the third port respectively.Type: ApplicationFiled: September 30, 2016Publication date: October 25, 2018Inventor: Sam Mandegaran
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Patent number: 10038458Abstract: A radio frequency multiplexer, which supports a plurality of frequency bands, comprises a common node, a plurality of single band nodes, and a plurality of parallel branches. Each of the plurality of parallel branches is designated to one of the plurality of frequency bands and connects the common node and one of the plurality of single band nodes. A particular branch of the parallel branches may comprises a filter for a desired frequency band that passes through the particular branch, a quadrature hybrid coupler coupled to the filter, and a set of one or more other filters for one or more other frequency bands in the plurality of frequency bands respectively. The set of one or more other filters is coupled to the quadrature hybrid coupler for rejecting the one or more other frequency bands by the particular branch.Type: GrantFiled: September 29, 2016Date of Patent: July 31, 2018Assignee: ABTUM INC.Inventor: Sam Mandegaran
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Publication number: 20180083591Abstract: A radio frequency (RF) duplexer may comprise quadrature hybrid couplers and RF filters. The isolation and insertion loss of such RF duplexer, often limited by practical imperfections such as component mismatches and layout asymmetries, may be improved by including capacitors in the RF duplexer. A tunable or reconfigurable RF duplexer with high isolation and low insertion loss, under all desired settings, may be realized by adding tunable capacitors to the tunable RF duplexer which includes the quadrature hybrid couplers and tunable RF filters.Type: ApplicationFiled: September 21, 2017Publication date: March 22, 2018Inventor: Sam Mandegaran
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Patent number: 9912326Abstract: A method for maintaining good cancelation in a passive feed-forward cancelation circuit is disclosed. The feed-forward cancelation circuit may include at least one path which may comprise a phase-shifter and a variable attenuator. This method uses the complex value of the reflection coefficient at the point where the communication device is connected to a transmission medium, such as an antenna, to determine the values for the phase shifter(s) and the variable attenuator(s).Type: GrantFiled: July 12, 2016Date of Patent: March 6, 2018Assignee: ABTUM INC.Inventor: Sam Mandegaran
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Patent number: 9762416Abstract: The disclosure provides circuitry and methods to determine the reflection coefficient of a transmission line connected another physical element or device such as an antenna. The outgoing and the reflected signals on the transmission line are compared using two separate paths, with one path going through a signal conditioning circuitry such as an equalizer. The two paths are then combined and detected. A lookup table may be used for non-linear responses.Type: GrantFiled: July 26, 2016Date of Patent: September 12, 2017Assignee: Abtum Inc.Inventor: Sam Mandegaran
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Patent number: 9755668Abstract: A radio frequency (RF) circuitry includes a device that taps a transmission line and picks up some of electromagnetic signals traveling in both directions. The RF circuitry includes a first detector, a second detector, a third detector, and a processor. The first detector measures a power of a first portion of the tapped electromagnetic signal travelling in one direction. The second detector measures a power of a first portion of the tapped electromagnetic signal travelling in the other direction. The third detector measures a power of a combined signal which includes a second portion of the tapped electromagnetic signal travelling in the one direction and a second portion of the tapped electromagnetic signal travelling in the other direction. The processor determines, based on outputs from the detectors, a relative magnitude and a relative phase of the electromagnetic signals.Type: GrantFiled: September 29, 2016Date of Patent: September 5, 2017Assignee: Abtum Inc.Inventors: Sam Mandegaran, Hossein Hashemi
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Publication number: 20170099652Abstract: A radio frequency multiplexer, which supports a plurality of frequency bands, comprises a common node, a plurality of single band nodes, and a plurality of parallel branches. Each of the plurality of parallel branches is designated to one of the plurality of frequency bands and connects the common node and one of the plurality of single band nodes. A particular branch of the parallel branches may comprises a filter for a desired frequency band that passes through the particular branch, a quadrature hybrid coupler coupled to the filter, and a set of one or more other filters for one or more other frequency bands in the plurality of frequency bands respectively. The set of one or more other filters is coupled to the quadrature hybrid coupler for rejecting the one or more other frequency bands by the particular branch.Type: ApplicationFiled: September 29, 2016Publication date: April 6, 2017Inventor: Sam Mandegaran
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Publication number: 20170093441Abstract: A radio frequency (RF) circuitry includes a device that taps a transmission line and picks up some of electromagnetic signals traveling in both directions. The RF circuitry includes a first detector, a second detector, a third detector, and a processor. The first detector measures a power of a first portion of the tapped electromagnetic signal travelling in one direction. The second detector measures a power of a first portion of the tapped electromagnetic signal travelling in the other direction. The third detector measures a power of a combined signal which includes a second portion of the tapped electromagnetic signal travelling in the one direction and a second portion of the tapped electromagnetic signal travelling in the other direction. The processor determines, based on outputs from the detectors, a relative magnitude and a relative phase of the electromagnetic signals.Type: ApplicationFiled: September 29, 2016Publication date: March 30, 2017Inventors: Sam Mandegaran, Hossein Hashemi
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Publication number: 20170070217Abstract: A method for maintaining good cancelation in a passive feed-forward cancelation circuit is disclosed. The feed-forward cancelation circuit may include at least one path which may comprise a phase-shifter and a variable attenuator. This method uses the complex value of the reflection coefficient at the point where the communication device is connected to a transmission medium, such as an antenna, to determine the values for the phase shifter(s) and the variable attenuator(s).Type: ApplicationFiled: July 12, 2016Publication date: March 9, 2017Inventor: Sam Mandegaran
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Publication number: 20170070368Abstract: The disclosure provides circuitry and methods to determine the reflection coefficient of a transmission line connected another physical element or device such as an antenna. The outgoing and the reflected signals on the transmission line are compared using two separate paths, with one path going through a signal conditioning circuitry such as an equalizer. The two paths are then combined and detected. A lookup table may be used for non-linear responses.Type: ApplicationFiled: July 26, 2016Publication date: March 9, 2017Inventor: Sam Mandegaran