Patents Assigned to ETA DEVICES, INC.
-
Patent number: 10658981Abstract: Circuits and methods for achieving high linearity, high efficiency power amplifiers, including digital predistortion (DPD) and pulse cancellation in switched-state RF power amplifier systems are described.Type: GrantFiled: November 1, 2018Date of Patent: May 19, 2020Assignee: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Patent number: 10622949Abstract: Circuits and methods for achieving high linearity, high efficiency power amplifiers, including digital predistortion (DPD) and pulse cancellation in switched-state RF power amplifier systems are described.Type: GrantFiled: November 1, 2018Date of Patent: April 14, 2020Assignee: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Publication number: 20190074797Abstract: Circuits and methods for achieving high linearity, high efficiency power amplifiers, including digital predistortion (DPD) and pulse cancellation in switched-state RF power amplifier systems are described.Type: ApplicationFiled: November 1, 2018Publication date: March 7, 2019Applicant: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Patent number: 10164577Abstract: Circuits and methods for achieving high linearity, high efficiency power amplifiers, including digital predistortion (DPD) and pulse cancellation in switched-state RF power amplifier systems are described.Type: GrantFiled: August 27, 2015Date of Patent: December 25, 2018Assignee: ETA DEVICES, INC.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Patent number: 10038461Abstract: A radio frequency (RF) power amplifier system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. In embodiments where multiple power amplifiers are used, a combiner may be provided to combine outputs of the power amplifiers.Type: GrantFiled: October 6, 2016Date of Patent: July 31, 2018Assignee: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Patent number: 9979421Abstract: A radio frequency (RF) transmit system includes an observation receiver coupled to receive a portion of an RF signal propagating along an RF transmit signal path and a digital pre-distortion (DPD) system coupled to the observation receiver and configured to receive one or more signals from the observation receiver and in response thereto, to adapt one or more DPD values of the RF transmit system over a period of time and a range of operating conditions of the RF transmit system and to provide one or more adapted DPD values to said controller.Type: GrantFiled: March 2, 2016Date of Patent: May 22, 2018Assignee: Eta Devices, Inc.Inventors: Mattias Astrom, Mark A. Briffa, Joel L. Dawson, John Hoversten, Per-Ludvig B. Normark, Yevgeniy A. Tkachenko
-
Patent number: 9768732Abstract: A radio frequency (RF) amplification system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. The system may include a single digital-to-RF modulator and a power divider to drive multiple power amplifiers. A power combiner may also be provided to combine outputs of the power amplifiers. In at least one implementation, amplitude adjustment of the RF input signals of the one or more power amplifiers may be used to provide transmit power control and/or power backoff.Type: GrantFiled: November 17, 2016Date of Patent: September 19, 2017Assignee: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, David J. Perreault, Oguzhan Uyar
-
Patent number: 9768731Abstract: Described embodiments provide a radio frequency (RF) amplifier system having at least one amplifier. The at least one amplifier includes an RF input port, an RF output port and a drain bias port. At least one voltage modulator is coupled to the bias port of the least one amplifier to provide a bias voltage. The bias voltage is selected by switching among a plurality of discrete voltages. At least one filter circuit is coupled between the at least one voltage modulator and the at least one amplifier. The at least one filter circuit controls spectral components resultant from transitions in the bias voltage when switching among the plurality of discrete voltages. A controller dynamically adapts at least one setting of the at least one voltage modulator by using multi-pulse transitions when switching among the plurality of discrete voltages for a first operating condition of the RF amplifier.Type: GrantFiled: December 14, 2015Date of Patent: September 19, 2017Assignee: Eta Devices, Inc.Inventors: David J. Perreault, Joel L. Dawson, Wei Li, Yevgeniy A. Tkachenko, Balaji Lakshminarayanan, John Hoversten
-
Patent number: 9755672Abstract: Described embodiments provide an integrated power supply and modulator system. The system includes a magnetic regulation stage, a switched-capacitor voltage balancer stage, and at least one output switching stage. The switched-capacitor voltage balancer stage is coupled to an output of the magnetic regulation stage, and maintains a substantially ratiometric set of voltages with respect to a reference potential. The magnetic regulation stage includes an inductor and at least two switches to selectively couple the inductor to two or more of (a) an input of the magnetic regulation stage, (b) a first voltage node of the switched-capacitor voltage balancer stage, and (c) a second voltage node of the switched-capacitor voltage balancer stage. The output switching stage selectively couples at least two voltages from the switched-capacitor voltage balancer stage to an output of the system in response to control signals. The system may include startup circuitry, feedback/feedforward circuitry, and control circuitry.Type: GrantFiled: February 11, 2015Date of Patent: September 5, 2017Assignee: Eta Devices, Inc.Inventors: David J. Perreault, Wei Li, Yevgeniy A. Tkachenko, Joel L. Dawson
-
Publication number: 20170070194Abstract: A radio frequency (RF) amplification system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. The system may include a single digital-to-RF modulator and a power divider to drive multiple power amplifiers. A power combiner may also be provided to combine outputs of the power amplifiers. In at least one implementation, amplitude adjustment of the RF input signals of the one or more power amplifiers may be used to provide transmit power control and/or power backoff.Type: ApplicationFiled: November 17, 2016Publication date: March 9, 2017Applicant: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, David J. Perreault, Oguzhan Uyar
-
Publication number: 20170063407Abstract: A radio frequency (RF) power amplifier system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. In embodiments where multiple power amplifiers are used, a combiner may be provided to combine outputs of the power amplifiers.Type: ApplicationFiled: October 6, 2016Publication date: March 2, 2017Applicant: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Patent number: 9537456Abstract: A radio frequency (RF) amplification system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. The system may include a single digital-to-RF modulator and a power divider to drive multiple power amplifiers. A power combiner may also be provided to combine outputs of the power amplifiers. In at least one implementation, amplitude adjustment of the RF input signals of the one or more power amplifiers may be used to provide transmit power control and/or power backoff.Type: GrantFiled: October 22, 2015Date of Patent: January 3, 2017Assignee: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, David J. Perreault, Oguzhan Uyar
-
Patent number: 9531291Abstract: Described embodiments provide a transmission-line resistance compression network that includes an input port, a first output port coupled to a first load and a second output port coupled to a second load. The first and second loads may have substantially similar input impedances under substantially similar operating conditions. The transmission-line resistance compression network includes a transmission-line network coupled to the input port, the first output port and the second output port, and includes at least two transmission lines of different lengths. For a first operating range, the resistances at input ports of the first and second loads vary over first and second ratios, respectively. The resistance of the input impedance at the input port of the transmission-line resistance compression network varies over a third ratio that is smaller than at least one of the first and second ratios.Type: GrantFiled: April 17, 2014Date of Patent: December 27, 2016Assignee: Eta Devices, Inc.Inventor: David J. Perreault
-
Patent number: 9490752Abstract: A radio frequency (RF) power amplifier system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. In embodiments where multiple power amplifiers are used, a combiner may be provided to combine outputs of the power amplifiers.Type: GrantFiled: November 6, 2015Date of Patent: November 8, 2016Assignee: ETA DEVICES, INC.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Publication number: 20160099686Abstract: Described embodiments provide a radio frequency (RF) amplifier system having at least one amplifier. The at least one amplifier includes an RF input port, an RF output port and a drain bias port. At least one voltage modulator is coupled to the bias port of the least one amplifier to provide a bias voltage. The bias voltage is selected by switching among a plurality of discrete voltages. At least one filter circuit is coupled between the at least one voltage modulator and the at least one amplifier. The at least one filter circuit controls spectral components resultant from transitions in the bias voltage when switching among the plurality of discrete voltages. A controller dynamically adapts at least one setting of the at least one voltage modulator by using multi-pulse transitions when switching among the plurality of discrete voltages for a first operating condition of the RF amplifier.Type: ApplicationFiled: December 14, 2015Publication date: April 7, 2016Applicant: Eta Devices, Inc.Inventors: David J. Perreault, Joel L. Dawson, Wei Li, Yevgeniy A. Tkachenko, Balaji Lakshminarayanan, John Hoversten
-
Publication number: 20160065138Abstract: A radio frequency (RF) power amplifier system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. In embodiments where multiple power amplifiers are used, a combiner may be provided to combine outputs of the power amplifiers.Type: ApplicationFiled: November 6, 2015Publication date: March 3, 2016Applicant: ETA DEVICES, INC.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Publication number: 20150372646Abstract: Circuits and methods for achieving high linearity, high efficiency power amplifiers, including digital predistortion (DPD) and pulse cancellation in switched-state RF power amplifier systems are described.Type: ApplicationFiled: August 27, 2015Publication date: December 24, 2015Applicant: ETA DEVICES, INC.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Patent number: 9209758Abstract: A radio frequency (RF) power amplifier system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. In embodiments where multiple power amplifiers are used, a combiner may be provided to combine outputs of the power amplifiers.Type: GrantFiled: March 24, 2015Date of Patent: December 8, 2015Assignee: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Patent number: 9166536Abstract: A radio frequency (RF) transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. In embodiments where multiple power amplifiers are used, a combiner may be provided to combine outputs of the power amplifiers. In at least one implementation, amplitude adjustment of the RF input signals of the one or more power amplifiers may be used to provide transmit power control and/or power backoff for the RF transmitter.Type: GrantFiled: October 30, 2012Date of Patent: October 20, 2015Assignee: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
-
Patent number: 9160287Abstract: Circuits and methods for achieving high linearity, high efficiency power amplifiers, including digital predistortion (DPD) and pulse cancellation in switched-state RF power amplifier systems are described.Type: GrantFiled: October 28, 2013Date of Patent: October 13, 2015Assignee: Eta Devices, Inc.Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar