Patents by Inventor Jeffrey Gordon Strahler

Jeffrey Gordon Strahler 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).

  • Patent number: 10979088
    Abstract: 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: Grant
    Filed: December 12, 2018
    Date of Patent: April 13, 2021
    Assignee: Skyworks Solutions, Inc.
    Inventors: Jen-Chien Chang, Reza Kasnavi, Roman Zbigniew Arkiszewski, Jeffrey Gordon Strahler, John G. Freed
  • Publication number: 20210036669
    Abstract: Apparatus and methods for adaptive power amplifier biasing are provided. In certain embodiments, a power amplifier system includes a power amplifier that provides amplification to a radio frequency (RF) signal, and a power amplifier bias control circuit that generates a bias signal of the power amplifier based on a bandwidth signal indicating a bandwidth of the RF signal. The power amplifier bias control circuit has a bandwidth that adapts to the bandwidth of the RF signal as indicated by the bandwidth signal.
    Type: Application
    Filed: July 17, 2020
    Publication date: February 4, 2021
    Inventors: Sabah Khesbak, Florinel G. Balteanu, Roman Zbigniew Arkiszewski, Jeffrey Gordon Strahler
  • Publication number: 20190190548
    Abstract: 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: Application
    Filed: December 12, 2018
    Publication date: June 20, 2019
    Inventors: Jen-Chien Chang, Reza Kasnavi, Roman Zbigniew Arkiszewski, Jeffrey Gordon Strahler, John G. Freed
  • Patent number: 10080192
    Abstract: Apparatus and methods for envelope tracking systems are disclosed herein. In certain implementations, an envelope tracking system for generating a power amplifier supply voltage for a power amplifier is provided. The envelope tracking system includes a DC-to-DC converter that generates a regulated voltage from a battery voltage and controls a voltage of the regulated voltage using a low frequency feedback signal. The envelope tracking system further includes an error amplifier that generates an output current using an envelope signal and a high frequency feedback signal. The low frequency feedback signal is based on a low frequency component of the power amplifier supply voltage and the high frequency feedback signal is based on a high frequency component of the power amplifier supply voltage. The error amplifier generates the power amplifier supply voltage by adjusting the magnitude of the regulated voltage using the output current.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: September 18, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventors: Florinel G. Balteanu, David Steven Ripley, Sabah Khesbak, Jeffrey Gordon Strahler, Roman Zbigniew Arkiszewski, Yevgeniy A. Tkachenko
  • Publication number: 20170223632
    Abstract: Apparatus and methods for envelope tracking systems are disclosed herein. In certain implementations, an envelope tracking system for generating a power amplifier supply voltage for a power amplifier is provided. The envelope tracking system includes a DC-to-DC converter that generates a regulated voltage from a battery voltage and controls a voltage of the regulated voltage using a low frequency feedback signal. The envelope tracking system further includes an error amplifier that generates an output current using an envelope signal and a high frequency feedback signal. The low frequency feedback signal is based on a low frequency component of the power amplifier supply voltage and the high frequency feedback signal is based on a high frequency component of the power amplifier supply voltage. The error amplifier generates the power amplifier supply voltage by adjusting the magnitude of the regulated voltage using the output current.
    Type: Application
    Filed: April 21, 2017
    Publication date: August 3, 2017
    Inventors: Florinel G. Balteanu, David Steven Ripley, Sabah Khesbak, Jeffrey Gordon Strahler, Roman Zbigniew Arkiszewski, Yevgeniy A. Tkachenko
  • Patent number: 9668215
    Abstract: Apparatus and methods for envelope tracking in a mobile device are disclosed herein. In certain configurations, a method includes amplifying a radio frequency (RF) input signal using a power amplifier, providing power to the power amplifier from a power amplifier supply voltage, controlling a voltage level of the power amplifier supply voltage based on a control voltage using a DC-to-DC converter, adjusting the voltage level of the power amplifier supply voltage based on an envelope of the RF input signal using an error amplifier, low pass filtering the power amplifier supply voltage to generate a filtered voltage using a low pass filter, and generating the control voltage based on comparing the filtered voltage to a reference voltage using a comparator.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: May 30, 2017
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Florinel G. Balteanu, David Steven Ripley, Sabah Khesbak, Jeffrey Gordon Strahler, Roman Zbigniew Arkiszewski, Yevgeniy A. Tkachenko
  • Publication number: 20160174153
    Abstract: Apparatus and methods for envelope tracking in a mobile device are disclosed herein. In certain configurations, a method includes amplifying a radio frequency (RF) input signal using a power amplifier, providing power to the power amplifier from a power amplifier supply voltage, controlling a voltage level of the power amplifier supply voltage based on a control voltage using a DC-to-DC converter, adjusting the voltage level of the power amplifier supply voltage based on an envelope of the RF input signal using an error amplifier, low pass filtering the power amplifier supply voltage to generate a filtered voltage using a low pass filter, and generating the control voltage based on comparing the filtered voltage to a reference voltage using a comparator.
    Type: Application
    Filed: February 8, 2016
    Publication date: June 16, 2016
    Inventors: Florinel G. Balteanu, David Steven Ripley, Sabah Khesbak, Jeffrey Gordon Strahler, Roman Zbigniew Arkiszewski, Yevgeniy A. Tkachenko
  • Patent number: 9294054
    Abstract: Apparatus and methods for envelope trackers are disclosed herein. In certain configurations, a mobile device includes a power amplifier configured to amplify a radio frequency (RF) input signal to generate an RF output signal. The power amplifier is configured to receive power from a power amplifier supply voltage. The mobile device further includes a voltage converter configured to convert a battery voltage into a regulated voltage, and the voltage converter is configured to control a magnitude of the regulated voltage based on an error signal. The mobile device further includes an error amplifier configured to generate an output current based on an envelope of the RF input signal and to generate the power amplifier supply voltage by adjusting the magnitude of the regulated voltage using the output current. The error amplifier is further configured to control the error signal.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: March 22, 2016
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Florinel G. Balteanu, David Steven Ripley, Sabah Khesbak, Jeffrey Gordon Strahler, Roman Zbigniew Arkiszewski, Yevgeniy A. Tkachenko
  • Patent number: 9143096
    Abstract: Apparatus and methods for envelope tracking systems are disclosed herein. In certain implementations, an envelope tracking system for generating a power amplifier supply voltage for a power amplifier is provided. The envelope tracking system includes a DC-to-DC converter that generates a regulated voltage from a battery voltage and controls a voltage of the regulated voltage using a low frequency feedback signal. The envelope tracking system further includes an error amplifier that generates an output current using an envelope signal and a high frequency feedback signal. The low frequency feedback signal is based on a low frequency component of the power amplifier supply voltage and the high frequency feedback signal is based on a high frequency component of the power amplifier supply voltage. The error amplifier generates the power amplifier supply voltage by adjusting the magnitude of the regulated voltage using the output current.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: September 22, 2015
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Florinel G Balteanu, David Steven Ripley, Sabah Khesbak, Jeffrey Gordon Strahler, Roman Zbigniew Arkiszewski, Yevgeniy A Tkachenko
  • Publication number: 20150180421
    Abstract: Apparatus and methods for envelope trackers are disclosed herein. In certain configurations, a mobile device includes a power amplifier configured to amplify a radio frequency (RF) input signal to generate an RF output signal. The power amplifier is configured to receive power from a power amplifier supply voltage. The mobile device further includes a voltage converter configured to convert a battery voltage into a regulated voltage, and the voltage converter is configured to control a magnitude of the regulated voltage based on an error signal. The mobile device further includes an error amplifier configured to generate an output current based on an envelope of the RF input signal and to generate the power amplifier supply voltage by adjusting the magnitude of the regulated voltage using the output current. The error amplifier is further configured to control the error signal.
    Type: Application
    Filed: March 6, 2015
    Publication date: June 25, 2015
    Inventors: Florinel G. Balteanu, David Steven Ripley, Sabah Khesbak, Jeffrey Gordon Strahler, Roman Zbigniew Arkiszewski, Yevgeniy A. Tkachenko