Electromagnetic phase shifter using perturbation controlled by piezoelectric transducer and pha array antenna formed therefrom
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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.
Chang, Kai; Yun, Tae-yeoul; Tahim, Raghbir S. (2006). Electromagnetic phase shifter using perturbation controlled by piezoelectric transducer and pha array antenna formed therefrom. United States. Patent and Trademark Office; Texas A&M University. Libraries. Available electronically from