Aj. Parfitt et Ts. Bird, COMPUTATION OF APERTURE ANTENNA MUTUAL COUPLING USING FDTD AND KIRCHHOFF FIELD TRANSFORMATION, Electronics Letters, 34(12), 1998, pp. 1167-1168
A new method for computing the mutual coupling between aperture antenn
as using the finite-difference time-domain (FDTD) method together with
the Kirchhoff near-field to near-field transformation is described. T
he method offers a reduction in computer storage, particularly for wid
ely spaced antenna elements in an array.