Patents Assigned to RST Scientific Research, Inc.
  • Electromagnetic phase shifter using perturbation controlled by piezoelectric transducer and pha array antenna formed therefrom
    Patent number: 6987488
    Abstract: An apparatus for introducing electromagnetic perturbation into a target device includes a piezoelectric transducer configured to deflect in response to an applied voltage and a perturber configured to deflect in response to deflection of the piezoelectric transducer. The deflection of the perturber causes electromagnetic perturbation, and in some cases a phase shift, in the target device. The electromagnetic perturbation may also be used to tune microwave devices such as filters, resonators, and oscillators.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: January 17, 2006
    Assignees: The Texas A&M University System, RST Scientific Research, Inc.
    Inventors: Kai Chang, Tae-Yeoul Yun, Raghbir S. Tahim