An Analysis Method for Double Periodic Nonplanar Antenna Arrays.

The self impedance of a doubly periodic phased antenna array is a necessary quantity for the calculation of the scattering and transmitting behavior of the phased array. Previous work has shown a straightforward method of performing this impedance calculation when all the elements lie within the plane of the array. For nonplanar elements, this procedure produces complex and computationally undesirable equations. By introducing a three-dimensional array and using symmetry considerations, the nonplanar problem may be changed to a simpler planar one. This method enables the calculation of mutual and self impedances for a wide class of complex current distribution. KAR p. 2