Investigation of the Characteristics of a Frequency Diversity Array Antenna

The transformations of signals and the properties of the radiation beampattern in a frequency-diversity antenna array are investigated. The effect of focusing and steering on the beampattern is being investigated. A conventional uniform coherent FDA antenna with a linear frequency plan is considered in detail, and its directional patterns with focus only on transmission, only on reception, and full focus are studied. FDA antennas with nonlinear and symmetrical frequency distributions over the elements are considered. The effect of matched filtering on the appearance of the radiation pattern has been studied.