Patent attributes
An antenna subsystem having advantageous characteristics for single channel monopulse tracking applications is described. The antenna subsystem may include an array of wave guides such as a square array of four wave guides operating in a monopulse tracking operating frequency band. A single aperture horn may be connected with the array such that one or more wave guide geometry transitions deliberately generates higher order modes. The single aperture horn may be configured such that the dominant mode and the higher order modes combine to generate a corresponding radiation pattern having an enhanced symmetry and/or uniformity. A wave guide circuit may be coupled with the array and configured to generate one or more signals usable to track a moving target such as an elevation error tracking signal and an azimuth error tracking signal.
