Title :
Optimization and design of conductivity profiles for the PML boundary condition and its application to bioelectromagnetic problems
Author :
Lazzi, G. ; Furse, C.M. ; Gandhi, O.P.
Author_Institution :
Dept. of Electr. Eng., Utah Univ., Salt Lake City, UT, USA
Abstract :
An optimization technique for the perfect matched layer (PML) absorbing boundary conditions has been presented using the FDTD code. The analytical approach to predict the theoretical reflection introduced by a PML backed by a metal plane has been used to determine optimized profiles for the conductivity of the PML material. The optimized PML has been used for bioelectromagnetic applications, and only small differences have been found to date between the results obtained by using this boundary and traditional boundary conditions like retarded time boundary conditions or those of Mur (1981). The applications relate to the effects of EM fields on humans.
Keywords :
biological effects of microwaves; electromagnetic wave absorption; electromagnetic wave reflection; finite difference time-domain analysis; optimisation; 835 MHz; FDTD code; PML; PML boundary condition; UHF; absorbing boundary conditions; bioelectromagnetic problems; conductivity profiles; design; human body; metal plane; optimization technique; perfect matched layer; reflection; Biological materials; Boundary conditions; Conducting materials; Conductivity; Design optimization; Finite difference methods; Humans; Inorganic materials; Reflection; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.630204
