Title :
STOPBANDS, COM PARAMETERS, AND P MATRICES
Author :
Cherednick, Valentine I. ; Dvoesherstov, Michael Y.
Author_Institution :
State Univ., Nizhny Novgorod
Abstract :
Dispersion curves for 128 Lithium Niobate, YZ Lithium Niobate, 42 Lithium Tantalate, STX Quartz, STX+25 Quartz, ATX Quartz, and LGS crystals are calculated with modified Hasimoto´s program. Dependences of obtained COM parameters on the electrode width and thickness are approximated by polynomials and used for calculations of admittance of transducer and frequency response of surface acoustic wave device by P matrix technique. The modified soft allows to calculate any substrates, including ones with low electromechanical coupling coefficients, those are very difficult or even impossible for calculation by means of other known tools.
Keywords :
acoustic dispersion; electrodes; frequency response; gallium compounds; lanthanum compounds; lithium compounds; matrix algebra; physics computing; polynomial approximation; quartz; surface acoustic wave transducers; ATX quartz; COM parameters; Hasimoto´s program; LGS crystals; La3Ga5SiO14; LiNbO3; LiTaO3; P matrices; STX quartz; STX+25 quartz; SiO2; dispersion curves; electrode width; electromechanical coupling coefficients; frequency response; lithium niobate; lithium tantalate; polynomials; stopbands; surface acoustic wave device; transducer admittance; Acoustic transducers; Admittance; Crystals; Electrodes; Frequency response; Lithium compounds; Lithium niobate; Polynomials; Response surface methodology; Surface acoustic wave devices;
Conference_Titel :
Electronics and Photonics, 2006. MEP 2006. Multiconference on
Conference_Location :
Guanajuato
Print_ISBN :
1-4244-0627-7
Electronic_ISBN :
1-4244-0628-5
DOI :
10.1109/MEP.2006.335640
