Patents by Inventor Leroy Plymale

Leroy Plymale 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).

  • Method and apparatus for a fail safe fourier transform matrix
    Patent number: 8140606
    Abstract: A base station transmitter for maintaining data rate transmission between a set of Fourier Transform matrices, having a digital Fourier Transform Matrix (FTM), and analog FTM, and a plurality of transmit paths therebetween. During the occurrence of a power amplifier failure, the method includes detecting the failure of a power amplifier (PA); and reconfiguring the digital FTM and analog FTM to a pass-thru mode.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: March 20, 2012
    Assignee: Motorola Mobility, Inc.
    Inventors: Ronald L. Porco, Leroy A. Plymale, Jr.
  • METHOD AND APPARATUS FOR A FAIL SAFE FOURIER TRANSFORM MATRIX
    Publication number: 20090157786
    Abstract: A base station transmitter for maintaining data rate transmission between a set of Fourier Transform matrices, having a digital Fourier Transform Matrix (FTM), and analog FTM, and a plurality of transmit paths therebetween. During the occurrence of a power amplifier failure, the method includes detecting the failure of a power amplifier (PA); and reconfiguring the digital FTM and analog FTM to a pass-thru mode.
    Type: Application
    Filed: December 17, 2007
    Publication date: June 18, 2009
    Applicant: MOTOROLA, INC.
    Inventors: Ronald L. PORCO, Leroy A. PLYMALE, JR.
  • Methods and apparatus of managing a power amplifier
    Patent number: 7221222
    Abstract: In the present technique for power management of a power amplifier, an amplifier bank from a plurality of amplifier banks in a power amplifier that has been switched off for a longest period of time is assessed (826) to provide a lowest amplifier bank. With this lowest amplifier bank, an up-threshold that is associated to the lowest amplifier bank is assessed (828), followed by another assessment (820) of a current power output of the power amplifier. It is next determined (830) whether the current power output corresponds at least in a predetermined way to the up-threshold, and if so, the lowest amplifier bank is accordingly switched on (832).
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: May 22, 2007
    Assignee: Motorola, Inc.
    Inventors: Leroy A. Plymale, Jr., Joseph L. Clark, Henry H. Nguyen, John S. Ruppel, Thomas L. Sears, Ronald Porco, Armando Vera Jimenez
  • Methods and apparatus of managing a power amplifier
    Patent number: 7221223
    Abstract: In the present technique for power management of a power amplifier, it is first determined (314) whether a counter value corresponds at least in a predetermined way to a counter threshold, and if so, a current status of at least one amplifier bank from a plurality of amplifier banks in a power amplifier is switched (316).
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: May 22, 2007
    Assignee: Motorola, Inc.
    Inventors: Leroy A. Plymale, Jr., Joseph L. Clark, Henry H. Nguyen, John S. Ruppel, Thomas L. Sears, Ronald Porco, Armando Vera Jimenez
  • Methods and apparatus of managing a power amplifier
    Publication number: 20070024356
    Abstract: In the present technique for power management of a power amplifier, an amplifier bank from a plurality of amplifier banks in a power amplifier that has been switched off for a longest period of time is assessed (826) to provide a lowest amplifier bank. With this lowest amplifier bank, an up-threshold that is associated to the lowest amplifier bank is assessed (828), followed by another assessment (820) of a current power output of the power amplifier. It is next determined (830) whether the current power output corresponds at least in a predetermined way to the up-threshold, and if so, the lowest amplifier bank is accordingly switched on (832).
    Type: Application
    Filed: July 28, 2005
    Publication date: February 1, 2007
    Inventors: Leroy Plymale, Joseph Clark, Henry Nguyen, John Ruppel, Thomas Sears, Ronald Porco, Armando Jimenez
  • Methods and apparatus of managing a power amplifier
    Publication number: 20070024357
    Abstract: In the present technique for power management of a power amplifier, it is first determined (314) whether a counter value corresponds at least in a predetermined way to a counter threshold, and if so, a current status of at least one amplifier bank from a plurality of amplifier banks in a power amplifier is switched (316).
    Type: Application
    Filed: July 28, 2005
    Publication date: February 1, 2007
    Inventors: Leroy Plymale, Joseph Clark, Henry Nguyen, John Ruppel, Thomas Sears, Ronald Porco, Armando Jimenez
  • Method and apparatus for improving intermodulation in a feed-forward amplifier
    Patent number: 5867064
    Abstract: A feed-forward amplifier (600) has an error path (123) replaced by a feed-forward amplifier (603) in a nested feed-forward configuration. By replacing the error path (123) with the feed-forward amplifier (603), design parameters such as efficiency and power output which are difficult to achieve with the conventional error path (123) are easily achieved with the single loop feed-forward amplifier (603). In this configuration, the main path (613) of the feed-forward amplifier (603) is capable of operating in a more efficient Class AB mode while still operating over a large dynamic range with to provide a relatively constant gain/phase relationship, thus insuring good intermodulation performance. The error path (627) of the feed-forward amplifier (603) must still be biased Class A, but it's requirements are much less than those of a Class A error amplifier (124) in an un-nested configuration.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: February 2, 1999
    Assignee: Motorola, Inc.
    Inventors: Mark I. Van Horn, Joe Clark, Leroy Plymale