Patents by Inventor Mark A. Briffa

Mark A. Briffa 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).

  • RF Amplifier Having A Transition Shaping Filter
    Publication number: 20160065138
    Abstract: 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: Application
    Filed: November 6, 2015
    Publication date: March 3, 2016
    Applicant: ETA DEVICES, INC.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • Linearization Circuits And Methods For Multilevel Power Amplifier Systems
    Publication number: 20150372646
    Abstract: 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: Application
    Filed: August 27, 2015
    Publication date: December 24, 2015
    Applicant: ETA DEVICES, INC.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • RF amplifier having discrete supply voltages
    Patent number: 9209758
    Abstract: 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: Grant
    Filed: March 24, 2015
    Date of Patent: December 8, 2015
    Assignee: Eta Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • Method and apparatus for multilevel power amplification
    Patent number: 9172336
    Abstract: Circuits and methods for performing multilevel power amplification using multiple different supply voltages or states are disclosed. In some embodiments, power amplifiers are provided that switch between three or more supply voltages or states.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: October 27, 2015
    Assignee: Ela Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • Transmitter architecture and related methods
    Patent number: 9166536
    Abstract: 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: Grant
    Filed: October 30, 2012
    Date of Patent: October 20, 2015
    Assignee: Eta Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • Linearization circuits and methods for multilevel power amplifier systems
    Patent number: 9160287
    Abstract: 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: Grant
    Filed: October 28, 2013
    Date of Patent: October 13, 2015
    Assignee: Eta Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • RF Amplifier Having Discrete Supply Voltages
    Publication number: 20150194940
    Abstract: 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: Application
    Filed: March 24, 2015
    Publication date: July 9, 2015
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • RF amplifier architecture and related techniques
    Patent number: 9020453
    Abstract: 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: Grant
    Filed: July 23, 2014
    Date of Patent: April 28, 2015
    Assignee: ETA Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • RF Amplifier Architecture and Related Techniques
    Publication number: 20140335805
    Abstract: 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: Application
    Filed: July 23, 2014
    Publication date: November 13, 2014
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • Linearization circuits and methods for multilevel power amplifier systems
    Patent number: 8829993
    Abstract: 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: Grant
    Filed: March 15, 2013
    Date of Patent: September 9, 2014
    Assignee: Eta Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • RF amplifier architecture and related techniques
    Patent number: 8824978
    Abstract: 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. 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: Grant
    Filed: October 30, 2012
    Date of Patent: September 2, 2014
    Assignee: ETA Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • Linearization Circuits And Methods For Multilevel Power Amplifier Systems
    Publication number: 20140132354
    Abstract: 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: Application
    Filed: March 15, 2013
    Publication date: May 15, 2014
    Applicant: ETA DEVICES, INC.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • Linearization Circuits And Methods For Multilevel Power Amplifier Systems
    Publication number: 20140118065
    Abstract: 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: Application
    Filed: October 28, 2013
    Publication date: May 1, 2014
    Applicant: Eta Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • METHOD AND APPARATUS FOR MULTILEVEL POWER AMPLIFICATION
    Publication number: 20140118072
    Abstract: Circuits and methods for performing multilevel power amplification using multiple different supply voltages or states are disclosed. In some embodiments, power amplifiers are provided that switch between three or more supply voltages or states.
    Type: Application
    Filed: July 31, 2013
    Publication date: May 1, 2014
    Applicant: Eta Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • Transmitter Architecture and Related Methods
    Publication number: 20140120854
    Abstract: 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: Application
    Filed: October 30, 2012
    Publication date: May 1, 2014
    Applicant: ETA Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • RF Amplifier Architecture and Related Techniques
    Publication number: 20140118063
    Abstract: 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. 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: Application
    Filed: October 30, 2012
    Publication date: May 1, 2014
    Applicant: ETA Devices, Inc.
    Inventors: Mark A. Briffa, Joel L. Dawson, John E. DeRoo, Krenar Komoni, David J. Perreault, Oguzhan Uyar
  • Method and device in a telecommunication system
    Patent number: 6351677
    Abstract: According to the invention, a Cartesian control means (16) comprising a phase rotator (50) and a phase adjuster (52) is provided. With a method and a device according to the invention, a system is provided that is unconditionally stable with respect to non-phase alignment, regardless of input power changes, temperature and component ageing. No certain conditions need to be placed upon the control system to ensure stability, i.e. the system is non-obtrusive and requires no off-line calibration. The inclusion of the phase rotator (50) and phase adjustment techniques into the Cartesian control system makes this possible.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: February 26, 2002
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Scott Allen Leyonhjelm, Mark Briffa
  • Linearized power amplifier
    Patent number: 5420536
    Abstract: A linearized power amplifier is provided which comprises a non-linear radio frequency (RF) power amplifier, a linearization circuit such as a Cartesian Feedback circuit, an RF feedback circuit; an IF feedback circuit; or a feedforward circuit, and a dynamic bias modulation circuit for modulating an operating voltage of the amplifier. The dynamic bias modulation means includes an envelope determining circuit, signal processing circuits in which predetermined data or a simplified transfer function determined from measured characteristics of the amplifier is stored and used to produce power bias and/or base or gate bias signals, and driver circuits for modulating the power supply voltage and/or base or gate bias voltage of the RF amplifier in response to the bias signals. The dynamic bias modulation may be used with a BJT-based, and FET-based or any other type of RF power amplifier.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: May 30, 1995
    Assignee: Victoria University of Technology
    Inventors: Michael Faulkner, Mark A. Briffa