Patents by Inventor Thomas P. McGrath

Thomas P. McGrath 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: 8406718
    Abstract: A method for characterizing the effect of each step attenuator state, on phase and amplitude, which may include in an exemplary embodiment: activating each step attenuator state as the sole contributor to attenuation, and measuring at least one of a step attenuator amplitude contribution (SAAC) and/or a step attenuator phase contribution (SAPC).
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: March 26, 2013
    Assignee: AAI Corporation
    Inventors: James J. Jaklitsch, Jay Markey, Thomas P. McGrath
  • Patent number: 8170514
    Abstract: A method for using a “B” channel of a dual channel measurement receiver as a transfer standard for power measurement, which may include, in an exemplary embodiment, correlating a measurement made with an “A” channel of the dual channel measurement receiver to a measurement made with an RF Power Meter on one RF signal source, so that readings from the “A” channel are aligned to the RF Power Meter; aligning the “B” Channel to the “A” Channel, once the “A” channel has been aligned to read the same as the RF Power Meter; and using the “B” Channel as a transfer standard to measure all remaining RF signal sources in the system.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: May 1, 2012
    Assignee: AAI Corporation
    Inventors: James J. Jaklitsch, Jay Markey, Thomas P. McGrath
  • Publication number: 20110183638
    Abstract: A method for using a “B” channel of a dual channel measurement receiver as a transfer standard for power measurement, which may include, in an exemplary embodiment, correlating a measurement made with an “A” channel of the dual channel measurement receiver to a measurement made with an RF Power Meter on one RF signal source, so that readings from the “A” channel are aligned to the RF Power Meter; aligning the “B” Channel to the “A” Channel, once the “A” channel has been aligned to read the same as the RF Power Meter; and using the “B” Channel as a transfer standard to measure all remaining RF signal sources in the system.
    Type: Application
    Filed: March 4, 2011
    Publication date: July 28, 2011
    Applicant: AAl Corporation
    Inventors: James JAKLITSCH, Jay Markey, Thomas P. McGrath
  • Patent number: 7904043
    Abstract: A method for using a “B” channel of a dual channel measurement receiver as a transfer standard for power measurement, which may include in an exemplary embodiment: correlating measurements made with an “A” channel to measurements made with an RF Power Meter on one RF signal source, so that readings from the “A” channel are aligned to the RF Power Meter; aligning the “B” Channel to the “A” Channel (Transfer alignment of Channel B to the RF Power Meter), once the “A” channel has been aligned to read the same as the RF Power Meter; and using the “B” Channel as a transfer standard to measure all remaining RF signal sources in the system, on a time-line much faster than may be accomplished using a power meter.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: March 8, 2011
    Assignee: AAI Corporation
    Inventors: James J. Jaklitsch, Jay Markey, Thomas P. McGrath
  • Patent number: 7801502
    Abstract: A method of providing an integrated approach to automated system alignment is set forth, which may include in an exemplary embodiment: providing amplifier compression alignment, (which may include characterizing and/or compensating for a parasitic effect); providing continuous internal alignment of phase and amplitude of a synthetic stimulus instrument (SSI) output signal; providing external measurement port alignment; and providing transfer alignment of internal measurement paths. According to another exemplary embodiment, a receiver apparatus may include: a dual-channel coherent measurement receiver which may include at least one internal channel operative to measure time-division-multiplexed (TDM) feedback signals from each signal source of a synthetic stimulus instrument (SSI); and at least one external channel operative to make direct measurement at an external alignment port output.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: September 21, 2010
    Assignee: AAI Corporation
    Inventors: James J. Jaklitsch, Jay Markey, Thomas P. McGrath
  • Publication number: 20100194376
    Abstract: A method for characterizing the effect of each step attenuator state, on phase and amplitude, which may include in an exemplary embodiment: activating each step attenuator state as the sole contributor to attenuation, and measuring at least one of a step attenuator amplitude contribution (SAAC) and/or a step attenuator phase contribution (SAPC).
    Type: Application
    Filed: February 4, 2010
    Publication date: August 5, 2010
    Applicant: AAI Corporation
    Inventors: James Jaklitsch, Jay Markey, Thomas P. McGrath
  • Publication number: 20100136938
    Abstract: A method for using a “B” channel of a dual channel measurement receiver as a transfer standard for power measurement, which may include in an exemplary embodiment: correlating measurements made with an “A” channel to measurements made with an RF Power Meter on one RF signal source, so that readings from the “A” channel are aligned to the RF Power Meter; aligning the “B” Channel to the “A” Channel (Transfer alignment of Channel B to the RF Power Meter), once the “A” channel has been aligned to read the same as the RF Power Meter; and using the “B” Channel as a transfer standard to measure all remaining RF signal sources in the system, on a time-line much faster than may be accomplished using a power meter.
    Type: Application
    Filed: February 4, 2010
    Publication date: June 3, 2010
    Applicant: AAI Corporation
    Inventors: James JAKLITSCH, Jay MARKEY, Thomas P. McGRATH
  • Publication number: 20090237295
    Abstract: A method of providing an integrated approach to automated system alignment is set forth, which may include in an exemplary embodiment: providing amplifier compression alignment, (which may include characterizing and/or compensating for a parasitic effect); providing continuous internal alignment of phase and amplitude of a synthetic stimulus instrument (SSI) output signal; providing external measurement port alignment; and providing transfer alignment of internal measurement paths. According to another exemplary embodiment, a receiver apparatus may include: a dual-channel coherent measurement receiver which may include at least one internal channel operative to measure time-division-multiplexed (TDM) feedback signals from each signal source of a synthetic stimulus instrument (SSI); and at least one external channel operative to make direct measurement at an external alignment port output.
    Type: Application
    Filed: December 18, 2006
    Publication date: September 24, 2009
    Applicant: AAI Corporation
    Inventors: James J. Jaklitsch, Jay Markey, Thomas P. McGrath
  • Patent number: 7480688
    Abstract: A phase persistent agile signal source method, apparatus, and/or computer program product provides a direct digital synthesizer (DDS) clock rate, provides a frequency tuning word (FTW) for a desired output frequency, provides a DDS update for a desired DDS update rate, provides an equivalent frequency least significant bit (LSB) for the desired DDS update rate, provides a current phase of an LSB accumulator, and generates a coherent phase of the desired output frequency based on the DDS clock rate, FTW, DDS update rate to the DDS, equivalent LSB for the desired DDS update rate, and current phase of the LSB accumulator. The coherent phase can be the fraction portion of the result obtained from the multiplication of the FTW and the current phase of the LSB accumulator.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: January 20, 2009
    Assignee: AAI Corporation
    Inventors: Jeffrey L. Meckley, Thomas P. McGrath, William F. McClelland, Robert J. Baummer, Jr.
  • Patent number: 5586887
    Abstract: A training apparatus, method and kit for remotely and substantially instantaneously evaluating the alignment, settings and levels of the aiming devices of a howitzer gun.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: December 24, 1996
    Assignee: AAI Corporation
    Inventors: Niall B. McNelis, Richard W. Doyle, Dale A. Clark, Larry A. Zeafla, Thomas P. McGrath