Patents by Inventor Kumud Patel

Kumud Patel 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 system for automatic gain control in a satellite communications system
    Patent number: 6904273
    Abstract: An apparatus for providing automatic gain control for use in a satellite terminal of a satellite communication system capable of transmitting a plurality of different modes of data. The apparatus includes a demodulator circuit having an analog to digital converter; a first variable attenuator having an attenuation value set on the basis of a measured power level of a predetermined data signal; and a second variable attenuator having an attenuation value set on the basis of the mode of data being received by the satellite terminal, where each of the data modes have a corresponding predetermined attenuation value associated therewith which is utilized as the attenuation value of the second variable attenuator when the satellite terminal receives the data mode.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: June 7, 2005
    Assignee: Hughes Electronics Corporation
    Inventors: J. Mark Steber, Richard Clewer, Kumud Patel, Bala Subramaniam
  • Using satellite ephemeris data to dynamically position an earth station antenna
    Publication number: 20030048229
    Abstract: The present invention relates to a method and apparatus of using ephemeris data for positioning of an antenna of an earth station. Ephemeris data is transmitted from the satellite to the earth station, wherein the ephemeris data comprises positioning data of a satellite. The ephemeris data is received by the earth station and is used to realize the location of the satellite. The antenna of the earth station is adjusted to point toward the satellite, using the received ephemeris data.
    Type: Application
    Filed: May 16, 2002
    Publication date: March 13, 2003
    Inventors: John Schmid, Stan Kay, Russell Fang, Gregory Ernst, Mark Steber, Kumud Patel, Jeffrey Singer
  • Calibration of an earth station antenna using data provided by a satellite
    Publication number: 20030048222
    Abstract: An antenna of an earth station is adjusted at a predetermined interval for calibration purposes. A notification of clear sky is received. Signals from a satellite are received upon the receiving of the notification of clear sky. The antenna of the earth station is adjusted to point in various directions while receiving the signals from the satellite. A direction is determined where the antenna of the earth station is pointing where the strongest signal is received from the satellite. The antenna of the earth station is positioned to point in the direction where the strongest signal is received by the satellite.
    Type: Application
    Filed: May 16, 2002
    Publication date: March 13, 2003
    Inventors: John Schmid, Stan Kay, Russell Fang, Gregory Ernst, Mark Steber, Kumud Patel, Jeffrey Singer
  • Method and system for automatic gain control in a satellite communications system
    Publication number: 20020098814
    Abstract: An apparatus for providing automatic gain control for use in a satellite terminal of a satellite communication system capable of transmitting a plurality of different modes of data. The apparatus includes a demodulator circuit having an analog to digital converter; a first variable attenuator having an attenuation value set on the basis of a measured power level of a predetermined data signal; and a second variable attenuator having an attenuation value set on the basis of the mode of data being received by the satellite terminal, where each of the data modes have a corresponding predetermined attenuation value associated therewith which is utilized as the attenuation value of the second variable attenuator when the satellite terminal receives the data mode.
    Type: Application
    Filed: January 10, 2002
    Publication date: July 25, 2002
    Applicant: HUGHES ELECTRONICS
    Inventors: J. Mark Steber, Richard Clewer, Kumud Patel, Bala Subramaniam
  • Method and apparatus that compensates for output power variations in a transmitter by using scaling factors to scale the baseband input signal
    Patent number: 5983085
    Abstract: In a base transceiver station in a cellular network, a digital signal processor generates a baseband input signal, which is converted to analog and transmitted by a transmitter at radio frequency. In accordance with the present invention, the baseband input signal is scaled by a selected factor from a predetermined table of scaling factors. The scaling factors are determined based on measured output power characteristics of the transmitter and provide frequency compensation caused by filtering ripple and/or attenuation compensation caused by uncertainties in internal attenuators.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: November 9, 1999
    Assignee: Hughes Electronics Corporation
    Inventors: Hassan Zamat, Kumud Patel, Brian Fair