Functional microwave flat antenna using alumina ceramic substrate and piezoelectric actuator

We have demonstrated a new-type microstrip patch antenna on a dielectric ceramic substrate with a mechanism of a variable antenna height using a mechatronics technology. The functional microwave flat antenna with an alumina ceramic substrate was controlled by a piezoelectric actuator, and changed the resonant frequencies. We have confirmed a possible variation of the antenna resonant frequency of 96% from 5.4 to 10.6 GHz.