Patents by Inventor Mohamed M'Jahed

Mohamed M'Jahed 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 for the rapid interrogation of a passive sensor, in particular of the surface acoustic waves type, and system for measuring the unique frequency of such a sensor
    Patent number: 9784775
    Abstract: For passive sensor with resonator having a natural frequency, a method comprises: a first phase emission of an electromagnetic signal toward the passive sensor at an emission frequency, the resonator oscillating in a forced regime at the emission frequency and then oscillating at its natural frequency when the emission is cut off; a first phase reception of the damped signal oscillating at natural frequency emitted by passive sensor, a measurement of the frequency being performed; a second phase emission of an electromagnetic signal at the measured frequency toward the passive sensor, the resonator oscillating in a forced regime at the measured frequency and then oscillating at its natural frequency when the emission is cut off; a second phase reception of the damped signal oscillating at natural frequency, a measurement of the frequency being performed, determination of the natural frequency being stopped due to measurement performed in this second reception phase.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: October 10, 2017
    Assignees: Universite de Lorraine, Centre National de la Recherche Scientifique
    Inventors: Mohamed M'Jahed, Gerard Prieur, Omar El Mazria
  • METHOD FOR THE RAPID INTERROGATION OF A PASSIVE SENSOR, IN PARTICULAR OF THE SURFACE ACOUSTIC WAVES TYPE, AND SYSTEM FOR MEASURING THE UNIQUE FREQUENCY OF SUCH A SENSOR
    Publication number: 20140253094
    Abstract: For passive sensor with resonator having a natural frequency, a method comprises: a first phase emission of an electromagnetic signal toward the passive sensor at an emission frequency, the resonator oscillating in a forced regime at the emission frequency and then oscillating at its natural frequency when the emission is cut off; a first phase reception of the damped signal oscillating at natural frequency emitted by passive sensor, a measurement of the frequency being performed; a second phase emission of an electromagnetic signal at the measured frequency toward the passive sensor, the resonator oscillating in a forced regime at the measured frequency and then oscillating at its natural frequency when the emission is cut off; a second phase reception of the damped signal oscillating at natural frequency, a measurement of the frequency being performed, determination of the natural frequency being stopped due to measurement performed in this second reception phase.
    Type: Application
    Filed: October 19, 2012
    Publication date: September 11, 2014
    Applicants: Universite de Lorraine, Centre National de la Recherche Scientifique
    Inventors: Mohamed M'Jahed, Gerard Prieur, Omar El Mazria