Abstract: Methods and apparatus for a radiator assembly having a feed circuit with an air interface to a quadridge feed structure to excite an antenna, such as a stacked patch antenna. Embodiments of the assembly can provide enhanced bandwidth, scan angle performance, and coincident phase centers for dual-linear polarizations.

Abstract: An electrically- and thermally-conductive gasket includes a planar base and a series of fingers bent out of the plane of the base. The base and the fingers are flexible, allowing the base and the fingers to engage respective matching surfaces on opposite sides of the gasket. The base and the fingers may be parts of a single piece of material, such as a thin metal sheet. The fingers make contact with a surface on one side of the gasket. The fingers may deform separately, allowing good contact to be made even when there is unevenness (non-uniformity) in the surface that they make contact with, or to compensate for the non-uniformity such as non-flatness. Similarly, the base may deform to make good contact with the surface on the side of the gasket opposite the fingers.

Abstract: An electrically- and thermally-conductive gasket includes a planar base and a series of fingers bent out of the plane of the base. The base and the fingers are flexible, allowing the base and the fingers to engage respective matching surfaces on opposite sides of the gasket. The base and the fingers may be parts of a single piece of material, such as a thin metal sheet. The fingers make contact with a surface on one side of the gasket. The fingers may deform separately, allowing good contact to be made even when there is unevenness (non-uniformity) in the surface that they make contact with, or to compensate for the non-uniformity such as non-flatness. Similarly, the base may deform to make good contact with the surface on the side of the gasket opposite the fingers.

Abstract: An antenna is provided from a plurality of antenna elements, each having a pair of orthogonally coupled notch elements coupled to an interleaved stripline-to-slot feed structure. Each dual-polarized, interleaved tapered slot antenna element forms a building block and a plurality of such tapered slot antenna elements can be arranged to form a phased array antenna having a triangular lattice pattern. The phased array antenna is capable of receiving electromagnetic signals having orthogonal polarization and includes a feed structure which provides interconnections on a single plane. The structure of the tapered slot antenna structure provides wideband, wide scan performance, for multiple polarizations without requiring electrical continuity between adjacent notch antenna elements.

Abstract: An antenna is provided from a plurality of antenna elements, each having a pair of orthogonally coupled notch elements coupled to an interleaved stripline-to-slot feed structure. Each dual-polarized, interleaved tapered slot antenna element forms a building block and a plurality of such tapered slot antenna elements can be arranged to form a phased array antenna having a triangular lattice pattern. The phased array antenna is capable of receiving electromagnetic signals having orthogonal polarization and includes a feed structure which provides interconnections on a single plane. The structure of the tapered slot antenna structure provides wideband, wide scan performance, for multiple polarizations without requiring electrical continuity between adjacent notch antenna elements.