Title :
Designing dispersive boundary condition (DBC) for the FD-TD method using digital filtering theory
Author :
Bi Zhiqiang ; Wu Keli ; Litva, J.
Author_Institution :
Commun. Res. Lab., McMaster Univ., Hamilton, Ont., Canada
Abstract :
A dispersive boundary condition (DBC) for the finite-difference time-domain method is presented. This DBC can absorb waves over a wide frequency band. This DBC is based on a new interpretation of the boundary condition. The relationship between the absorbing boundary condition and digital filters is discussed. On the basis of this new explanation for the DBC, the design of the DBC is investigated using digital filter theory. The relationship between the new DBC and other DBCs is investigated.<>
Keywords :
boundary-value problems; digital filters; dispersion (wave); electromagnetic wave absorption; filtering and prediction theory; finite difference time-domain analysis; DBC; FD-TD method; FDTD; absorbing boundary condition; digital filtering theory; digital filters; dispersive boundary condition; finite-difference time-domain method; frequency band; Boundary conditions; Digital filters; Dispersion; Filtering theory; Frequency; Microstrip antennas; Microstrip components; Microstrip filters; Reflection; Waveguide components;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221933
