Electrically Tunable Resonator for Microwave Applications Based on Hexaferrite-Piezoelectrc Layered Structure

An electrically tunable microwave resonator based on bilayers with single crystal Zn2Y-type hexaferrite and piezoelectrics of Lead Zirconate Titanate or Lead Magnesium Niobate - Lead Titanate is investigated. The resonator was positioned in a microstripline antenna structure based on alumina substrate. Resonance profiles were obtained for electric field E=0-12 kV/cm; bias magnetic fields H was parallel to the basal plane of hexaferrite. The magnetic and electric tunings of the resonator has been measured. Experimental and theoretical data of research are presented in the frequency range 5-25 GHz.