M. Hussein et A. Sebak, APPLICATION OF THE FINITE-DIFFERENCE TIME-DOMAIN METHOD TO THE ANALYSIS OF MOBILE ANTENNAS, IEEE transactions on vehicular technology, 45(3), 1996, pp. 417-426
In this paper, a review of the finite-difference time-domain (FDTD) me
thod is presented and then employed to model and predict the radiation
patterns of three basic configurations of mobile antennas. The direct
ive gain and the input impedance are also calculated. The antennas' co
nfigurations considered are a quarter-wavelength monopole mounted on a
conducting box, a bent-slot half-wavelength dipole flush mounted on a
conducting box, and a quarter-wavelength monopole mounted on the top
of an automobile. Three-feed models are discussed and the contour inte
gral is used to model the wire antenna. Transformation of the near fie
ld data, resulting from the FDTD, to obtain the radiation patterns is
discussed based on the equivalence principle. Radiation patterns obtai
ned using the FDTD compare well with published results.