Title :
Preliminary FDTD results from the anechoic absorber absorbing boundary condition
Author_Institution :
Center for Electromagn. Res., Northeastern Univ., Boston, MA, USA
Abstract :
A novel ABC has been proposed, based on anechoic chamber absorber foam geometry, with specified complex permittivity and permeability. The advantage of this absorbing boundary, based on carbon-loaded anechoic chamber absorber foam pyramids, is that it prevents reflections from much wider incident angles than currently used techniques. Preliminary FDTD (finite-difference time-domain) results on this ABC are presented. A two-dimensional FDTD simulation of an equilateral triangle saw-tooth absorbing layer, with a modulated Gaussian pulse plane wave, is shown.<>
Keywords :
anechoic chambers; boundary-value problems; electromagnetic wave absorption; finite difference time-domain analysis; 2D FDTD simulation; ABC; C; absorbing boundary condition; anechoic absorber; carbon loaded absorber; complex permittivity; equilateral triangle saw-tooth absorbing layer; finite-difference time-domain; modulated Gaussian pulse plane wave; Anechoic chambers; Boundary conditions; Electromagnetic radiation; Electromagnetic scattering; Finite difference methods; Geometry; Magnetic materials; Permittivity; Reflection; Time domain analysis;
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.1992.221880
