Patents by Inventor John Jackson Nisbet
John Jackson Nisbet 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: 20240113735Abstract: Systems and methods for magnitude and phase trimming are provided. In one aspect, a radio frequency (RF) trimmer circuit includes an input terminal configured to receive an RF signal, an output terminal configured to output the RF signal, a control input configured to receive a control signal, at least one impedance element, and at least one transistor configured to selectively connect the impedance element onto a path between the input and output terminals. The selectively connecting the impedance element controls at least one of a magnitude trim and a phase trim of the RF signal.Type: ApplicationFiled: September 20, 2023Publication date: April 4, 2024Inventors: John Jackson Nisbet, Hassan Sarbishaei, Guillaume Alexandre Blin
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Patent number: 11811438Abstract: Systems and methods for magnitude and phase trimming are provided. In one aspect, a radio frequency (RF) trimmer circuit includes an input terminal configured to receive an RF signal, an output terminal configured to output the RF signal, a control input configured to receive a control signal, at least one impedance element, and at least one transistor configured to selectively connect the impedance element onto a path between the input and output terminals. The selectively connecting the impedance element controls at least one of a magnitude trim and a phase trim of the RF signal.Type: GrantFiled: August 19, 2021Date of Patent: November 7, 2023Assignee: Skyworks Solutions, Inc.Inventors: John Jackson Nisbet, Hassan Sarbishaei, Guillaume Alexandre Blin
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Publication number: 20230107607Abstract: Examples of the disclosure include a current-conditioning apparatus comprising a current mirror circuit including an input transistor adapted to receive an input current from an injection node and including an output transistor adapted to replicate in response to the received input current an output current with a predefined current mirror ratio, and a differential amplifier adapted to provide a negative feedback loop between the injection node of the apparatus and a control terminal of the input transistor of the current mirror circuit.Type: ApplicationFiled: October 4, 2022Publication date: April 6, 2023Inventors: John Jackson Nisbet, Leslie Paul Wallis, Guillaume Alexandre Blin
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Patent number: 11496167Abstract: Systems and methods are provided herein that include an improved RF switch assembly. In at least one embodiment, the RF switch assembly may have an optimized topology including a common node shared by each signal path, reducing the size and cost of the RF switch assembly and providing improved performance.Type: GrantFiled: September 15, 2020Date of Patent: November 8, 2022Assignee: SKYWORKS SOLUTIONS, INC.Inventor: John Jackson Nisbet
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Patent number: 11451248Abstract: Apparatus and methods for front-end systems with directional couplers and a shared back switch are provided. In certain configurations, a method includes transmitting a first transmit signal from a first transmit port to an antenna port, generating a first coupled signal in response to the first transmit signal using a first directional coupler, providing the first coupled signal to a receive port by way of a first loopback selection switch and a shared back switch, transmitting a second transmit signal from a second transmit port to the antenna port, generating a second coupled signal in response to the second transmit signal using a second directional coupler, and providing the second coupled signal to the receive port by way of a second loopback selection switch and the shared back switch.Type: GrantFiled: August 7, 2020Date of Patent: September 20, 2022Assignee: Skyworks Solutions, Inc.Inventors: Mackenzie Brian Cook, John Jackson Nisbet
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Publication number: 20220294404Abstract: Bidirectional variable gain amplifiers (VGAs) for radio frequency (RF) communication systems are provided. In certain embodiments, a bidirectional VGA includes a first amplifier having an input coupled to a transmit/receive port, a second amplifier having an output coupled to a transmit port, a third amplifier having an input coupled to a receive port, a fourth amplifier having an output coupled to the transmit/receive port and to the input of the first amplifier, and a switch circuit that connects an output of the first amplifier to an input of the second amplifier in a transmit mode, and that connects an output of the third amplifier to an input of the fourth amplifier in a receive mode.Type: ApplicationFiled: February 9, 2022Publication date: September 15, 2022Inventors: John Jackson Nisbet, Hamed Golestaneh
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Publication number: 20220060202Abstract: Systems and methods for magnitude and phase trimming are provided. In one aspect, a radio frequency (RF) trimmer circuit includes an input terminal configured to receive an RF signal, an output terminal configured to output the RF signal, a control input configured to receive a control signal, at least one impedance element, and at least one transistor configured to selectively connect the impedance element onto a path between the input and output terminals. The selectively connecting the impedance element controls at least one of a magnitude trim and a phase trim of the RF signal.Type: ApplicationFiled: August 19, 2021Publication date: February 24, 2022Inventors: John Jackson Nisbet, Hassan Sarbishaei, Guillaume Alexandre Blin
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Patent number: 11201595Abstract: A radio-frequency (RF) module includes a first transistor having a base, a collector, and an emitter, a radio-frequency output transmit path coupled to the collector of the first transistor at a first end and to a radio-frequency output port at a second end, and an output matching network disposed in the radio-frequency output transmit path, the output matching network including a shunt arm coupled to ground, the shunt arm including a switch that is controllable to modify an impedance of the output matching network.Type: GrantFiled: November 23, 2016Date of Patent: December 14, 2021Assignee: Skyworks Solutions, Inc.Inventors: John William Mitchell Rogers, Gordon Glen Rabjohn, John Jackson Nisbet
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Publication number: 20210091808Abstract: Systems and methods are provided herein that include an improved RF switch assembly. In at least one embodiment, the RF switch assembly may have an optimized topology including a common node shared by each signal path, reducing the size and cost of the RF switch assembly and providing improved performance.Type: ApplicationFiled: September 15, 2020Publication date: March 25, 2021Inventor: John Jackson Nisbet
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Publication number: 20210075447Abstract: Apparatus and methods for front-end systems with directional couplers and a shared back switch are provided. In certain configurations, a method includes transmitting a first transmit signal from a first transmit port to an antenna port, generating a first coupled signal in response to the first transmit signal using a first directional coupler, providing the first coupled signal to a receive port by way of a first loopback selection switch and a shared back switch, transmitting a second transmit signal from a second transmit port to the antenna port, generating a second coupled signal in response to the second transmit signal using a second directional coupler, and providing the second coupled signal to the receive port by way of a second loopback selection switch and the shared back switch.Type: ApplicationFiled: August 7, 2020Publication date: March 11, 2021Inventors: Mackenzie Brian Cook, John Jackson Nisbet
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Patent number: 10742241Abstract: Apparatus and methods for front-end systems with directional couplers and a shared back switch are provided. In certain configurations, a method includes transmitting a first transmit signal from a first transmit port to an antenna port, generating a first coupled signal in response to the first transmit signal using a first directional coupler, providing the first coupled signal to a receive port by way of a first loopback selection switch and a shared back switch, transmitting a second transmit signal from a second transmit port to the antenna port, generating a second coupled signal in response to the second transmit signal using a second directional coupler, and providing the second coupled signal to the receive port by way of a second loopback selection switch and the shared back switch.Type: GrantFiled: July 9, 2019Date of Patent: August 11, 2020Assignee: Skyworks Solutions, Inc.Inventors: Mackenzie Brian Cook, John Jackson Nisbet
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Publication number: 20200083849Abstract: Circuits, devices and methods are disclosed, including radio-frequency circuitry comprising a polar modulator configured to invert a sampled transmitted signal into an inverted sampled transmitted signal, a signal combiner configured to combine the inverted sampled transmitted signal with a received signal and a control logic circuit coupled to the polar modulator, the control logic circuit configured to adjust one or more tuning parameters of the polar modulator for inverting the sampled transmitted signal.Type: ApplicationFiled: March 18, 2019Publication date: March 12, 2020Inventors: Mackenzie Brian COOK, John Jackson NISBET, John William Mitchell ROGERS
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Publication number: 20190334562Abstract: Apparatus and methods for front-end systems with directional couplers and a shared back switch are provided. In certain configurations, a method includes transmitting a first transmit signal from a first transmit port to an antenna port, generating a first coupled signal in response to the first transmit signal using a first directional coupler, providing the first coupled signal to a receive port by way of a first loopback selection switch and a shared back switch, transmitting a second transmit signal from a second transmit port to the antenna port, generating a second coupled signal in response to the second transmit signal using a second directional coupler, and providing the second coupled signal to the receive port by way of a second loopback selection switch and the shared back switch.Type: ApplicationFiled: July 9, 2019Publication date: October 31, 2019Inventors: Mackenzie Brian Cook, John Jackson Nisbet
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Patent number: 10396830Abstract: Apparatus and methods for front-end systems with multiple loopbacks and a shared back switch are provided. In certain configurations, a front-end system includes a first transmit path between a first transmit port and an antenna port, a second transmit path between a second transmit port and the antenna port, a first loopback path from the first transmit path to a receive port, and a second loopback path from the second transmit path to the receive port. The first and second loopback paths operate with a shared back switch to reduce area and/or complexity of the front-end system. Additionally, each loopback path includes a loopback selection switch that operates in combination with the back switch to select that particular loopback path.Type: GrantFiled: December 7, 2017Date of Patent: August 27, 2019Assignee: Skyworks Solutions, Inc.Inventors: Mackenzie Brian Cook, John Jackson Nisbet
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Patent number: 10236837Abstract: Circuits, devices and methods are disclosed, including radio-frequency circuitry comprising a polar modulator configured to invert a sampled transmitted signal into an inverted sampled transmitted signal, a signal combiner configured to combine the inverted sampled transmitted signal with a received signal and a control logic circuit coupled to the polar modulator, the control logic circuit configured to adjust one or more tuning parameters of the polar modulator for inverting the sampled transmitted signal.Type: GrantFiled: March 8, 2017Date of Patent: March 19, 2019Assignee: Skyworks Solutions, Inc.Inventors: Mackenzie Brian Cook, John Jackson Nisbet, John William Mitchell Rogers
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Publication number: 20180198471Abstract: Apparatus and methods for front-end systems with multiple loopbacks and a shared back switch are provided. In certain configurations, a front-end system includes a first transmit path between a first transmit port and an antenna port, a second transmit path between a second transmit port and the antenna port, a first loopback path from the first transmit path to a receive port, and a second loopback path from the second transmit path to the receive port. The first and second loopback paths operate with a shared back switch to reduce area and/or complexity of the front-end system. Additionally, each loopback path includes a loopback selection switch that operates in combination with the back switch to select that particular loopback path.Type: ApplicationFiled: December 7, 2017Publication date: July 12, 2018Inventors: Mackenzie Brian Cook, John Jackson Nisbet
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Publication number: 20170264251Abstract: Circuits, devices and methods are disclosed, including radio-frequency circuitry comprising a polar modulator configured to invert a sampled transmitted signal into an inverted sampled transmitted signal, a signal combiner configured to combine the inverted sampled transmitted signal with a received signal and a control logic circuit coupled to the polar modulator, the control logic circuit configured to adjust one or more tuning parameters of the polar modulator for inverting the sampled transmitted signal.Type: ApplicationFiled: March 8, 2017Publication date: September 14, 2017Inventors: Mackenzie Brian COOK, John Jackson NISBET, John William Mitchell ROGERS
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Publication number: 20170149390Abstract: A radio-frequency (RF) module includes a first transistor having a base, a collector, and an emitter, a radio-frequency output transmit path coupled to the collector of the first transistor at a first end and to a radio-frequency output port at a second end, and an output matching network disposed in the radio-frequency output transmit path, the output matching network including a shunt arm coupled to ground, the shunt arm including a switch that is controllable to modify an impedance of the output matching network.Type: ApplicationFiled: November 23, 2016Publication date: May 25, 2017Inventors: John William Mitchell ROGERS, Gordon Glen RABJOHN, John Jackson NISBET
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Patent number: 8729949Abstract: A method for controlling a switch based on transistors is disclosed. A switching circuit for switching a signal from an input port to an output port thereof is provided. A shunting circuit for switchably shunting the signal from the input port to ground is also provided. A control signal is generated for biasing a control port of the shunting circuit and an approximately complimentary control signal is generated for biasing of the switching circuit to either shunt a signal received at the input port or to switch the signal to the output port. A further bias signal for biasing a port within the switching circuit along the signal path between the input port and the output port is also provided.Type: GrantFiled: May 15, 2013Date of Patent: May 20, 2014Assignee: SiGe Semiconductor, Inc.Inventors: John Jackson Nisbet, Michael Joseph McPartlin, Chun-Wen Paul Huang
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Publication number: 20130260698Abstract: A method for controlling a switch based on transistors is disclosed. A switching circuit for switching a signal from an input port to an output port thereof is provided. A shunting circuit for switchably shunting the signal from the input port to ground is also provided. A control signal is generated for biasing a control port of the shunting circuit and an approximately complimentary control signal is generated for biasing of the switching circuit to either shunt a signal received at the input port or to switch the signal to the output port. A further bias signal for biasing a port within the switching circuit along the signal path between the input port and the output port is also provided.Type: ApplicationFiled: May 15, 2013Publication date: October 3, 2013Applicant: SiGe Semiconductor, Inc.Inventors: John Jackson Nisbet, Michael Joseph McPartlin, Chun-Wen Paul Huang