Title :
A moment method analysis of SAW interaction in periodic metal-semiconductor structure
Author :
Elkordy, M. ; Taha, T.E. ; Gomaa, A.
Author_Institution :
Fac. of Electron. Eng., Menoufia Univ., Egypt
fDate :
6/23/1905 12:00:00 AM
Abstract :
In this paper, the moment method technique is formulated to carry out a full wave analysis of a periodic metal strip on thin film semiconductor. A number of basis and testing functions verifying the electric field boundary conditions are assumed for the solution. The solution gives the electric field distribution as well as the potential and charge distribution. The surface impedance can be calculated using the relation of potential and charge density. The impedance calculations lead to transmission line structure applications as well as interaction with surface acoustic waves. The influence of surface impedance on the propagation characteristics of Rayleigh mode surface acoustic waves is presented. A small number of basis functions (nx=4), which reduce computational time, give good results. Our results agree very well with Green´s function data
Keywords :
Green´s function methods; Rayleigh waves; acoustic microwave devices; electric impedance; method of moments; microstrip lines; periodic structures; semiconductor-metal boundaries; surface acoustic wave devices; surface acoustic waves; surface conductivity; transmission line theory; Green´s function data; Rayleigh mode surface acoustic waves; SAW interaction; basis functions; charge density; charge distribution; computational time; electric field boundary conditions; electric field distribution; full wave analysis; impedance calculations; moment method; moment method analysis; periodic metal strip; periodic metal-semiconductor structure; potential; potential distribution; propagation characteristics; surface acoustic waves; surface impedance; testing functions; thin film semiconductor; transmission line structure applications; Acoustic waves; Boundary conditions; Moment methods; Potential well; Semiconductor thin films; Strips; Surface acoustic waves; Surface impedance; Testing; Transmission lines;
Conference_Titel :
Electronics, Circuits and Systems, 2001. ICECS 2001. The 8th IEEE International Conference on
Print_ISBN :
0-7803-7057-0
DOI :
10.1109/ICECS.2001.957519
