Limiting Possibilities of Reduction of Phased Array Sidelobes Directed Towards the Ground Using Phase Synthesis

The article examines the application of the phase synthesis method to reduce the sidelobes of the radiation pattern of phased array antennas directed towards the ground. This method allows to significantly reduce the undesired sidelobes. However, it has the following side effects: gain reduction, broadening of the main lobe and growth of the sidelobes located in the area symmetrical to the minimization area. The paper provides the limiting possibilities of this method for reducing lower sidelobes and presents the dependences of changes in the parameters of the radiation pattern on the level of the lower sidelobes.