Patents by Inventor Rifat Khaidarovich Yusupov

Rifat Khaidarovich Yusupov 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).

  • Detection of excessively high interference signal levels during reception of global navigation satellite system signals
    Patent number: 9606239
    Abstract: A high-linear amplifier receives, from an input bandpass filter, input signals including weak process signals and strong interference signals, amplifies the input signals, and transmits the amplified signals to an output bandpass filter. The high-linear amplifier includes a transistor and a feedback circuit that stabilizes the operating current of the transistor. The operating current includes the direct-current and low-frequency output signal currents of the transistor. The feedback circuit includes an interference detector that rectifies a portion of the high-frequency output signals of the transistor and extends the linear range of the high-linear amplifier. An interference indicator unit alerts an operator to the presence of excessively high levels of interference before the high-linear amplifier enters the non-linear mode. Amplified signals rejected by the output bandpass filter are reflected back to the high-linear amplifier stage.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: March 28, 2017
    Assignee: Topcon Positioning Systems, Inc.
    Inventors: Andrey Mikhailovich Sokolov, Dmitry Vitalievich Tatarnikov, Konstantin Mikhailovich Bachmanov, Rifat Khaidarovich Yusupov
  • Detection of Excessively High Interference Signal Levels During Reception of Global Navigation Satellite System Signals
    Publication number: 20170010360
    Abstract: A high-linear amplifier receives, from an input bandpass filter, input signals including weak process signals and strong interference signals, amplifies the input signals, and transmits the amplified signals to an output bandpass filter. The high-linear amplifier includes a transistor and a feedback circuit that stabilizes the operating current of the transistor. The operating current includes the direct-current and low-frequency output signal currents of the transistor. The feedback circuit includes an interference detector that rectifies a portion of the high-frequency output signals of the transistor and extends the linear range of the high-linear amplifier. An interference indicator unit alerts an operator to the presence of excessively high levels of interference before the high-linear amplifier enters the non-linear mode. Amplified signals rejected by the output bandpass filter are reflected back to the high-linear amplifier stage.
    Type: Application
    Filed: December 4, 2014
    Publication date: January 12, 2017
    Applicant: LIMITED LIABILITY COMPANY "TOPCON POSITIONING SYSTEMS"
    Inventors: Andrey Mikhailovich Sokolov, Dmitry Vitalievich Tatarnikov, Konstantin Mikhailovich Bachmanov, Rifat Khaidarovich Yusupov