DUAL MODE ANTENNA APPARATUS HAVING SLOTTED WAVEGUIDE AND BROADBAND ARRAYS

摘要

A single aperture antenna system disposed to operate simultaneously in active radar and passive broadband modes is disclosed herein. The dual mode antenna apparatus 40 of the present invention includes a waveguide antenna array 50 which generates a first radiation pattern of a first polarization within an antenna aperture A described thereby. The antenna apparatus 40 of the present invention further includes a broadband antenna array 60 coupled to the waveguide antenna array 50 for generating a second radiation pattern of a second polarization within the aperture A.