Title :
Evaluation of dispersion in COM-parameters
Author :
Sveshnikov, Boris V. ; Shitvov, Alexey P. ; Bhattacharjee, Kushal K.
Author_Institution :
Nizhny Novgorod State Univ., Russia
Abstract :
An extraction technique, valid even in analysis of Leaky SAW (STW, in particular), is found for evaluation of the key (demanded by the COM theory) local characteristics per period of an interdigital transducer (IDT). The complex picture of the "LSAW-IDT/Grating" interaction is represented in terms of mutual coupling of two counter-propagating waves, assuming that the effects linked with the bulk acoustic waves (BAWs) excitation processes influence the COM parameter values. Infinitely long regular short-circuited grating (SCG) and IDT are analyzed to evaluate the desired dispersion features of every COM parameter with a good accuracy.
Keywords :
bulk acoustic wave devices; interdigital transducers; surface acoustic wave transducers; BAW; COM parameters; IDT; bulk acoustic waves; counter propagating waves; coupling of mode parameter; interdigital transducer; leaky SAW; leaky surface acoustic waves; short circuited grating; Acoustic transducers; Acoustic waves; Frequency; Gratings; Mutual coupling; Numerical simulation; Rayleigh scattering; Resonance; Surface acoustic waves; Surface waves;
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
DOI :
10.1109/ULTSYM.2003.1293501
