Suppression of Transverse Spurious Modes on 30°YX-Cut Lithium Niobate-On-Insulator SH0 Resonators Through Electrode Rhomboidal Apodization

This work studies the effect of introducing a rhomboidal apodization pattern in the interdigital transducers (IDT) of 30°YX-cut Lithium Niobate-On-Insulator (LNOI) Shear Horizontal SH 0 resonators. To demonstrate the effect of IDT apodization, this work presents a set of manufactured resonators with different apodization ratios and compares their performance with non-apodized resonators.