초록 ▼

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 wit

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.

대표청구항 ▼

A dual mode antenna apparatus, said apparatus describing an antenna aperture, comprising: waveguide antenna array means for generating a first radiation pattern of a first polarization through said aperture, said waveguide antenna array means including a slotted waveguide antenna having a plurality

A dual mode antenna apparatus, said apparatus describing an antenna aperture, comprising: waveguide antenna array means for generating a first radiation pattern of a first polarization through said aperture, said waveguide antenna array means including a slotted waveguide antenna having a plurality of rows of waveguide slots opening on a ground plane, each of said slots being rectangularly shaped and arranged lengthwise in said rows; and broadband antenna array means coupled to said waveguide antenna array means for generating a second radiation pattern of a second polarization through said aperture, said broadband antenna array means including a plurality of linear notch element arrays, each of said notch element arrays being positioned substantially parallel with said rows of waveguide slots.