Title :
Accurate COM analysis for RSPUDT
Author :
Malocha, S. ; Abbott, B.P. ; Finch, C. ; Hamilton, E.B. ; Halpern, E.A.
Author_Institution :
Sawtek, Inc., Apopka, FL, USA
Abstract :
This paper presents an accurate method to calculate the P-matrix of an arbitrary transducer on an arbitrary substrate material. The approach is based on the COM model, and COM-parameters (transduction, reflectivity, capacitance and velocity) are calculated for each individual cell of the transducer in a way such that the influence of the neighboring cells is taken into account. Very good agreement between modelled and measured data is shown which verifies the approach.
Keywords :
finite element analysis; surface acoustic wave filters; surface acoustic wave transducers; COM analysis; COM model; COM-parameters; P-matrix calculation; RSPUDT; arbitrary substrate material; arbitrary transducer; neighboring cell influence; transducer individual cell; Capacitance; Conductivity; Electrodes; Electrostatics; Filters; Lithium compounds; Periodic structures; Reflectivity; Road transportation; Transducers;
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
DOI :
10.1109/ULTSYM.2003.1293232
