HALE4SPACE

The main goal of the project is the development of a new family of Band-Pass Filters (BPF) based on Surface Acoustic Wave (SAW) resonators with the series and parallel resonant frequencies controlled by printed L-C lumped elements. Thus, the BPF will be a hybrid combination of high Q-factor piezoelectric resonators with lower Q-factor printed reactive components. To achieve the main goal of the project, the following objectives will be fulfilled:
O1. Electromagnetic (EM) modeling and design of lumped element and coupling structures; EM modeling of SAW resonators using a new technique of “local modulation of the substrate effective permittivity”;
O2. Multi-physical piezo-electro-mechanical  modeling of SAW resonators; study of the effect of total interdigital transducer (IDT) area on the resonator equivalent impedance; detailed analysis of acoustic wave propagation for different GaN layer thicknesses and IDT metallizations; 
O3. Advanced experimental characterization techniques for material and equivalent circuit parameter extraction;
O4. Technological development for nanolithographic structure fabrication with reduced technological dispersion and decreased losses.