Patents by Inventor Matt Sienko

Matt Sienko 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).

  • Digital filtering in a Class D amplifier system to reduce noise fold over
    Patent number: 8189802
    Abstract: An improved power amplifier system is provided. The power amplifier system includes a programmable digital filter and a power amplifier, each responsive to a plurality of frequency response settings and switching frequency settings, respectively. Each frequency response setting and switching frequency setting is adaptively selected by a processor device to match a bandwidth of an incoming audio signal. The processor device identifies the current bandwidth of an incoming audio signal and adaptively selects a switching rate setting and a frequency response setting based on the current bandwidth. The frequency response setting is selected so as to reduce noise fold over in the power amplifier for a corresponding bandwidth, sampling rate setting, and switching frequency setting.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: May 29, 2012
    Assignee: Qualcomm Incorporated
    Inventors: Guoqing Miao, Matt Sienko, Seyfollah Bazarjani
  • DIGITAL FILTERING IN A CLASS D AMPLIFIER SYSTEM TO REDUCE NOISE FOLD OVER
    Publication number: 20100239102
    Abstract: An improved power amplifier system is provided. The power amplifier system includes a programmable digital filter and a power amplifier, each responsive to a plurality of frequency response settings and switching frequency settings, respectively. Each frequency response setting and switching frequency setting is adaptively selected by a processor device to match a bandwidth of an incoming audio signal. The processor device identifies the current bandwidth of an incoming audio signal and adaptively selects a switching rate setting and a frequency response setting based on the current bandwidth. The frequency response setting is selected so as to reduce noise fold over in the power amplifier for a corresponding bandwidth, sampling rate setting, and switching frequency setting.
    Type: Application
    Filed: March 19, 2009
    Publication date: September 23, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Guoqing Miao, Matt Sienko, Seyfollah Bazarjani