Complete COM Model: Reflectors and Gratings

This lecture covers the Couple of Modes (COM) model, focusing on reflectors and gratings. Topics include semi-infinite and finite reflectors, reflector gratings, leaky surface acoustic waves, dispersion relations, and the extraction of COM parameters. The instructor discusses the characteristics of leaky SAWs, the Plessky equation, and the use of synchronous resonators. The lecture also explores the design considerations for long and very long interdigital transducer (IDT) structures, as well as the impact of reflectivity on resonance frequencies. Additionally, the lecture delves into the attenuation per wavelength, FEM/BEM simulation tools, and the optimization of resonators for improved performance.