TY  - CPAPER
U1  - Konferenzveröffentlichung
A1  - Scholl, Gerd
A1  - Christ, Andreas
A1  - Grassl, Hans Peter
A1  - Ruile, Werner
A1  - Russer, Peter
A1  - Weigel, Robert
T1  - Efficient Design Tool for SAW-Resonator Filters
T2  - Ultrasonics Symposium Proceedings
N2  - 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.
KW  - Closed-form solution
KW  - Couplings
KW  - Design automation
KW  - Gratings
KW  - Transducers
KW  - Couplers
KW  - Filters
KW  - Differential equations
KW  - Energy storage
KW  - Propagation losses
Y1  - 1989
UR  - https://ieeexplore.ieee.org/document/66973
U6  - https://doi.org/10.1109/ULTSYM.1989.66973
DO  - https://doi.org/10.1109/ULTSYM.1989.66973
SP  - 135
EP  - 140
PB  - IEEE
ER  -