Patents by Inventor Brian Eplett

Brian Eplett 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: 9927469
    Abstract: A power detector constituted of: a transconductance element arranged to output a rectified detection current, the magnitude thereof arranged to increase exponentially responsive to a linear increase in the amplitude of an input signal; and at least one p-n junction based device, a function of the rectified detection current arranged to flow there through. The output of the power detector is a function of the voltage across the at least one p-n junction based device.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 27, 2018
    Assignee: Microsemi Corporation
    Inventor: Brian Eplett
  • Publication number: 20160178675
    Abstract: A power detector constituted of: a transconductance element arranged to output a rectified detection current, the magnitude thereof arranged to increase exponentially responsive to a linear increase in the amplitude of an input signal; and at least one p-n junction based device, a function of the rectified detection current arranged to flow there through. The output of the power detector is a function of the voltage across the at least one p-n junction based device.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 23, 2016
    Inventor: Brian EPLETT
  • Patent number: 9136802
    Abstract: Devices and methods for correcting for start-up transients in integrated power amplifier are disclosed. A power amplifier is responsive to a bias control output and is arranged to provide an amplified power output. In some examples, the boost current is adjusted based on a supply voltage and an input power of the power amplifier. The power amplifier can operate in a low power and a high power mode and the adjustments can be made to the supply voltage and/or the input power vary depending on whether the power amplifier is operating in the high or low power mode. The adjustments for the high power mode operation are different than and correspond to the high power mode input power and voltage and the adjustments for the low power mode operation are different than and correspond to the low power mode input power and voltage.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: September 15, 2015
    Assignee: Microsemi Corporation
    Inventors: Darcy Poulin, Kyle Hershberger, Brian Eplett, Mark Santini
  • Patent number: 9118281
    Abstract: Devices and methods for correcting for start-up transients in integrated power amplifiers are disclosed. A delay element is arranged to produce a delay waveform signal that is responsive to an input voltage signal. A transconductance element has an input that receives the delay waveform signal and is arranged to provide an output boost current that is based on the delay waveform signal and a gain of the transconductance element. A reference element provides an output bias current that is responsive to a static reference current and the boost current. A bias element has an input that receives the bias current and is arranged to provide a bias control output. A power amplifier is responsive to the bias control output and is arranged to provide an amplified power output. In some examples, the boost current is adjusted based on a supply voltage and an input power of the power amplifier.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: August 25, 2015
    Assignee: MICROSEMI CORPORATION
    Inventors: Kyle Hershberger, Brian Eplett, Mark Santini
  • Patent number: 8947164
    Abstract: A power amplifier has power detection capabilities that include a radio frequency (RF) power amplifier that has a gain stage that includes a gain stage input, a gain stage output, and a feedback loop coupled between an input and an output of the power amplifier. A detection circuit has a first detection circuit input electrically coupled to the gain stage input and has a detection circuit output. An amplitude control circuit and a phase control circuit are electrically coupled together in series between the gain stage output and a second detection circuit input. The amplitude control circuit and the phase control circuit produce a signal that is received by the second detection circuit input so that the detection circuit can detect a signal at the detection circuit output that is proportional to a the forward power output of the power amplifier and is insensitive to power amplifier output load mismatch.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: February 3, 2015
    Assignee: Microsemi Corporation
    Inventor: Brian Eplett
  • Publication number: 20140159817
    Abstract: Devices and methods for correcting for start-up transients in integrated power amplifier are disclosed. A power amplifier is responsive to a bias control output and is arranged to provide an amplified power output. In some examples, the boost current is adjusted based on a supply voltage and an input power of the power amplifier. The power amplifier can operate in a low power and a high power mode and the adjustments can be made to the supply voltage and/or the input power vary depending on whether the power amplifier is operating in the high or low power mode. The adjustments for the high power mode operation are different than and correspond to the high power mode input power and voltage and the adjustments for the low power mode operation are different than and correspond to the low power mode input power and voltage.
    Type: Application
    Filed: November 26, 2013
    Publication date: June 12, 2014
    Applicant: MICROSEMI CORPORATION
    Inventors: Darcy Poulin, Kyle Hershberger, Brian Eplett, Mark Santini
  • Publication number: 20130307625
    Abstract: Devices and methods for correcting for start-up transients in integrated power amplifiers are disclosed. A delay element is arranged to produce a delay waveform signal that is responsive to an input voltage signal. A transconductance element has an input that receives the delay waveform signal and is arranged to provide an output boost current that is based on the delay waveform signal and a gain of the transconductance element. A reference element provides an output bias current that is responsive to a static reference current and the boost current. A bias element has an input that receives the bias current and is arranged to provide a bias control output. A power amplifier is responsive to the bias control output and is arranged to provide an amplified power output. In some examples, the boost current is adjusted based on a supply voltage and an input power of the power amplifier.
    Type: Application
    Filed: May 17, 2013
    Publication date: November 21, 2013
    Applicant: Microsemi Corporation
    Inventors: Kyle Hershberger, Brian Eplett, Mark Santini
  • Publication number: 20130307624
    Abstract: A power amplifier has power detection capabilities that include a radio frequency (RF) power amplifier that has a gain stage that includes a gain stage input, a gain stage output, and a feedback loop coupled between an input and an output of the power amplifier. A detection circuit has a first detection circuit input electrically coupled to the gain stage input and has a detection circuit output. An amplitude control circuit and a phase control circuit are electrically coupled together in series between the gain stage output and a second detection circuit input. The amplitude control circuit and the phase control circuit produce a signal that is received by the second detection circuit input so that the detection circuit can detect a signal at the detection circuit output that is proportional to a the forward power output of the power amplifier and is insensitive to power amplifier output load mismatch.
    Type: Application
    Filed: May 14, 2013
    Publication date: November 21, 2013
    Applicant: Microsemi Corporation
    Inventor: Brian Eplett