@inproceedings{SchollChristGrassletal.1989,
  author    = {Scholl, Gerd and Christ, Andreas and Grassl, Hans Peter and Ruile, Werner and Russer, Peter and Weigel, Robert},
  title     = {Efficient Design Tool for SAW-Resonator Filters},
  booktitle = {Ultrasonics Symposium Proceedings},
  doi       = {10.1109/ULTSYM.1989.66973},
  url       = {https://ieeexplore.ieee.org/document/66973},
  institution = {Fakult{\"a}t Elektrotechnik und Informationstechnik (E+I) (bis 03/2019)},
  pages     = {135 -- 140},
  year      = {1989},
  abstract  = {The advantages of the coupling-of-modes (COM) formalism and the transmission-matrix approach are combined to create exact and computationally efficient analysis and synthesis CAD tools for the design of SAW-resonator filters. The models for the filter components, especially gratings, interdigital transducers (IDTs). and multistrip couplers (MSCs), are based on the COM approach, which delivers closed-form expressions. In order to determine the relevant COM parameters, the integrated COM differential equations are compared with analytically derived expressions from the transmission-matrix approach. The most important second-order effects such as energy storage, propagation loss and mechanical and electrical loading are fully taken into account. As an example, the authors investigate a two-pole, acoustically coupled resonator filter at 914.5 MHz on AT quartz. Excellent agreement between theory and measurement is found.},
  language  = {en}
}