Patents by Inventor Dmitri P. Prikhodko

Dmitri P. Prikhodko 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).

  • Current limiting circuit for RF power amplifier
    Patent number: 7873335
    Abstract: A current limiting circuit, especially for an RF power amplifier (PA) having a power control loop. The circuit is adapted to sense a representation of a bias current fed to a final stage of the PA. The sensed representation of the bias current is compared to a predetermined reference current and a signal is fed back to the power control loop upon the sensed representation of the bias current exceeding the reference current so as to limit output current of the PA. This provides a limitation of a current drawn by the PA which is generally insensitive to supply voltage and temperature variations. Optionally, a second circuit may be added to limit current drawn by the PA. The second circuit comprising a high accuracy VI converter that is adapted to compare a voltage VLIM representing a feed-back voltage of the power control loop and a predetermined reference voltage VBGAP.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: January 18, 2011
    Assignee: NXP B.V.
    Inventors: John J. Hug, Dmitri P. Prikhodko, Adrianus Van Bezooijen
  • CURRENT LIMITING CIRCUIT FOR RF POWER AMPLIFIER
    Publication number: 20090170454
    Abstract: A current limiting circuit, especially for an RF power amplifier (PA) having a power control loop. The circuit is adapted to sense a representation of a bias current fed to a final stage of the PA. The sensed representation of the bias current is compared to a predetermined reference current and a signal is fed back to the power control loop upon the sensed representation of the bias current exceeding the reference current so as to limit output current of the PA. This provides a limitation of a current drawn by the PA which is generally insensitive to supply voltage and temperature variations. Optionally, a second circuit may be added to limit current drawn by the PA. The second circuit comprising a high accuracy VI converter that is adapted to compare a voltage VLIM representing a feed-back voltage of the power control loop and a predetermined reference voltage VBGAP.
    Type: Application
    Filed: November 23, 2005
    Publication date: July 2, 2009
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: John J. Hug, Dmitri P. Prikhodko, Adrianus Van Bezooijen