Analysis of a sectionalized tower as an element in a medium wave phased array using the method of moments

The use of method-of-moments techniques to obtain operating base parameters for a medium wave directional array is described. The array incorporates a 130´ tall antenna element that is sectionalized 75´ above the base. A matrix of impedance measurements is used to obtain input data for the MININEC analysis of the array. The MININEC output provides base operating parameters for the appropriate field values required to produce the desired pattern. When these values were used, the resulting measured antenna pattern was in close agreement with the original theoretical pattern which had been calculated using traditional assumptions