Title :
Fast computation of static capacitance for periodic SAW transducers
Author :
Politi, M. ; Macchiarella, G. ; Stracca, G.B.
Author_Institution :
Dipartimento di Elettronico, Politecnico di Milano, Italy
Abstract :
An efficient algorithm to compute the static capacitance of periodic SAW (surface acoustic wave) interdigital transducers is proposed. The method is based on a new formulation of the well-known relationship giving the capacitance as a linear combination of the charges induced on an infinite transducer for one-electrode excitation. Besides computational efficiency, an interesting physical interpretation of static capacitance results. The algorithm itself is also tailored to split-finger transducers.<>
Keywords :
surface acoustic wave devices; computational efficiency; interdigital transducers; one-electrode excitation; periodic SAW transducers; split-finger transducers; static capacitance; Capacitance; Electrodes; Electrostatics; Fourier transforms; Metallization; Permittivity; Physics computing; Surface acoustic waves; Testing; Transducers;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
