ADVANCED ANTENNA SYSTEM (AAS) SUBARRAY SPLITTER WITH ADVANCED UPPER SIDELOBE SUPPRESSION (AUSS)

摘要

Methods and apparatuses are provided for advanced antenna system subarray splitter having advanced upper sidelobe suppression. An antenna system includes a plurality of antenna subarrays. Each of the plurality of antenna subarrays having a subarray input; and at least one subarray splitter in communication with the subarray input. Each of the at least one subarray splitter splits a subarray into a plurality of branches, at least one of the branches including a phase taper function and an amplitude taper function. For each of the plurality of antenna subarrays, the phase taper function and the amplitude taper function includes a plurality of fixed phase values and a plurality of fixed amplitude values, respectively, that are configured to not exceed a predetermined sidelobe suppression target for a plurality of electrical tilt angles across a predetermined angular range for the antenna subarray of the plurality of antenna subarrays.