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首页FDTD(时域有限差分法)算法的Matlab源程序
FDTD(时域有限差分法)算法的Matlab源程序

3-D FDTD code with PEC boundaries.This MATLAB M-file implements the finite-difference time-domain solution of Maxwell's curl equations over a three-dimensional Cartesian space lattice comprised of uniform cubic grid cells.
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%***********************************************************************
% 3-D FDTD code with PEC boundaries
%***********************************************************************
%
% Program author: Susan C. Hagness
% Department of Electrical and Computer Engineering
% University of Wisconsin-Madison
% 1415 Engineering Drive
% Madison, WI 53706-1691
% 608-265-5739
% hagness@engr.wisc.edu
%
% Date of this version: February 2000
%
% This MATLAB M-file implements the finite-difference time-domain
% solution of Maxwell's curl equations over a three-dimensional
% Cartesian space lattice comprised of uniform cubic grid cells.
%

% To illustrate the algorithm, an air-filled rectangular cavity
% resonator is modeled. The length, width, and height of the
% cavity are 10.0 cm (x-direction), 4.8 cm (y-direction), and
% 2.0 cm (z-direction), respectively.
%
% The computational domain is truncated using PEC boundary

% conditions:
% ex(i,j,k)=0 on the j=1, j=jb, k=1, and k=kb planes
% ey(i,j,k)=0 on the i=1, i=ib, k=1, and k=kb planes
% ez(i,j,k)=0 on the i=1, i=ib, j=1, and j=jb planes

% These PEC boundaries form the outer lossless walls of the cavity.
%

% The cavity is excited by an additive current source oriented
% along the z-direction. The source waveform is a differentiated
% Gaussian pulse given by
% J(t)=-J0*(t-t0)*exp(-(t-t0)^2/tau^2),
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