Abstract: A 3-D printable dual-polarized Vivaldi array may include a plurality of Vivaldi antennas having a 3-D printed modular construction that meets direct metal laser sintering fabrication design rules; a plurality of Sub-Miniature Push-on, Micro (SMPM) connectors forming a plurality of ground plane skirts supporting a lattice, each SMPM Connector having a detent. The 3-D printable dual-polarized Vivaldi array may further include a support structure between the lattice and the ground plane skirt; the ground plane skirt having a skirt swept forward angle of 40 to 60 degrees.

Abstract: Various embodiments are directed to systems, apparatus and methods providing an ultra-wide band (UWB) antenna configured to conform to a doubly curved surface and having an operating wavelength ?, the UWB antenna comprising: an array of electrically cooperating antennas emanating outward from a base region to respective locations of an outer surface region conforming to the doubly curved surface, the area of the outer surface region being divided in accordance with a mesh of unit cells defining thereby a plurality of edges, each of the unit cells having a unit cell minimum area selected in accordance with a desired array gain; wherein for each antenna the respective location of the outer surface region to which the antenna extends is associated with a respective one of the plurality of edges defined by the mesh of unit cells.

Abstract: The present disclosure relates to magnetization-free Faraday rotator systems, apparatuses, and related methods. One such system comprises a Faraday rotator device comprising a magneto-optical composite material having first and second magnetic component materials in a periodic or uniform pattern in an X-Y plane, wherein the first and second magnetic component materials are magnetized along a Z-axis in opposite directions and the Faraday rotator device produces nonzero magnetic Faraday rotation for the electromagnetic wave propagating in a Z-axis direction in the absence of an external bias magnetic field.

Abstract: An ultra wide band (UWB) antenna includes: (i) an array of antenna elements spaced from a central axis; and (ii) a network of lossy feedlines respectively communicatively coupled to the array of antenna elements. Each lossy feedline is periodically loaded with a resistance that is capacitively coupled to ground. Respective lengths of each lossy feedlines are selected to increase with an increase in distance from the central axis to achieve frequency independence of a radiated beamwidth from the UWB antenna.

Abstract: An ultra wide band (UWB) antenna includes: (i) an array of antenna elements spaced from a central axis; and (ii) a network of lossy feedlines respectively communicatively coupled to the array of antenna elements. Each lossy feedline is periodically loaded with a resistance that is capacitively coupled to ground. Respective lengths of each lossy feedlines are selected to increase with an increase in distance from the central axis to achieve frequency independence of a radiated beamwidth from the UWB antenna.

Abstract: A layered sheet polarizer including a multilayered structure having multiple transparent, low-absorption layers, the transparent, low-absorption layers including first layers having a relatively high index of refraction and second layers having a relatively low index of refraction, the first and second layers being arranged in an alternating manner within the structure so as to form resonator structures, and a dichroic layer positioned within the multilayered structure.

Abstract: An antenna includes a dielectric substrate having a three-dimensional contour, and a set of antenna traces on the dielectric substrate. Each antenna trace spirals around the three-dimensional contour in a helical pattern. Each antenna trace includes a plated metallic layer.

Abstract: Disclosed herein is a method of fabricating an antenna in which a flexible stamp is formed from a first wafer, the first wafer transferring a pattern to the flexible stamp, in which an antenna substrate is shaped into a three-dimensional contour with a second mold, in which the flexible stamp is positioned in the second mold to deform the flexible stamp into the three-dimensional contour, and in which a metallic layer on the flexible stamp is cold welded to create a set of antenna traces on the antenna substrate in accordance with the pattern. The antenna traces may then be electroplated.

Abstract: Disclosed herein is a method of fabricating an antenna in which a flexible stamp is formed from a first wafer, the first wafer transferring a pattern to the flexible stamp, in which an antenna substrate is shaped into a three-dimensional contour with a second mold, in which the flexible stamp is positioned in the second mold to deform the flexible stamp into the three-dimensional contour, and in which a metallic layer on the flexible stamp is cold welded to create a set of antenna traces on the antenna substrate in accordance with the pattern. The antenna traces may then be electroplated.