Abstract: A dielectric structure useful for shaping electromagnetic, EM, phase wavefronts, includes: a body having a monolithic construct; the body having a height dimension, H, from a proximal end to a distal end equal to or less than 60% of an overall outside dimension, D, of the body at the distal end, the distal end being disposed a distance away from the proximal end along a z-axis of an orthogonal x-y-z coordinate system, the distal end forming an electromagnetic aperture of the structure; the body having a sidewall between the proximal end and the distal end that forms and defines an interior cavity that is open at the proximal end, and closed at the distal end, the sidewall having a plurality of structural disruptions around an enclosing boundary of the interior cavity, the plurality of structural disruptions disposed and configured to reduce electromagnetic reflections.

Abstract: An electromagnetic device includes: a substrate comprising an elongated aperture having an overall length, L, and an overall width, W, as observed in a plan view of the device, where L is greater than W; a dielectric medium comprising a dielectric material other than air disposed on the substrate substantially covering the aperture, the dielectric medium having a cross sectional boundary, as viewed in the plan view of the device, that is symmetrical with respect to an in-plane axis of reflection of the dielectric medium; wherein the device is configured such that a line perpendicular to the overall length L of the elongated aperture and passing through a center point of the elongated aperture is not any in-plane axis of reflection.

Abstract: An antenna includes a substrate and an electromagnetic, EM, radiator. The substrate includes a magnetodielectric material. The EM radiator includes an electrically conductive material disposed on an upper surface of the substrate. The EM radiator further includes a root, and a pair of forks that are contiguous with and extend from the root along a first axis. The pair of forks are separated from one another by a slot in the electrically conductive material of the EM radiator to define a fork-shaped EM radiator. The root includes a bridge portion extending between the pair of forks in a direction of a second axis perpendicular to the first axis to electrically connect together the pair of forks.

Abstract: An electromagnetic device includes: a substrate having an elongated aperture having an overall length, L, and an overall width, W, as observed in a plan view of the device, where L>W; a dielectric medium having a dielectric material other than air disposed on the substrate substantially covering the aperture, the dielectric medium having a cross sectional boundary as viewed in the plan view of the device, the cross sectional boundary having at least one recessed portion that recesses inward toward the aperture from a tangent line that partially bounds the cross sectional boundary; wherein the length L is not perpendicular to the tangent line.

Abstract: An electromagnetic, EM, apparatus includes: a unit cell having at least two dielectric resonator antennas, DRAs; wherein each one of the at least two DRAs is distinctly different from another one of the at least two DRAs; wherein each one of the at least two DRAs is not electromagnetically coupled with another one of the at least two DRAs; wherein the unit cell is configured to operate over a defined overall frequency range; wherein a first DRA of the at least two DRAs is configured to operate over a first frequency range within the overall frequency range; wherein a second DRA of the at least two DRAs is configured to operate over a second frequency range within the overall frequency range that is different from the first frequency range.

Abstract: A method of making a dielectric, Dk, electromagnetic, EM, structure, includes: providing a first mold portion comprising substantially identical ones of a first plurality of recesses arranged in an array; filling the first plurality of recesses with a curable first Dk composition having a first average dielectric constant greater than that of air after full cure; placing a substrate on top of and across multiple ones of the first plurality of recesses filled with the first Dk composition, and at least partially curing the curable first Dk composition; and, removing the substrate with the at least partially cured first Dk composition from the first mold portion, resulting in an assembly having the substrate and a plurality of Dk forms including the at least partially cured first Dk composition, each of the plurality of Dk forms having a three dimensional, 3D, shape defined by corresponding ones of the first plurality of recesses.

Abstract: A dual band antenna includes a substrate having a magnetodielectric material, and an electrically conductive patch disposed on the substrate, wherein the patch has at least one in-plane cutout having an H-shape or an I-shape, as observed in a plan view of the patch.

Abstract: An electromagnetic, EM, apparatus, includes: a first portion having an EM signal feed; and a second portion disposed on the first portion, the second portion having a shaped metallized form having at least one shaped metallized cavity, the second portion further having a dielectric medium disposed within each of the at least one shaped metallized cavity such that respective ones of the dielectric medium has a 3D shape that conforms to a shape of a corresponding one of the at least one shaped metallized cavity.

Abstract: An electromagnetic, EM, apparatus includes: a unit cell having at least two dielectric resonator antennas, DRAs; wherein each one of the at least two DRAs is distinctly different from another one of the at least two DRAs; wherein each one of the at least two DRAs is not electromagnetically coupled with another one of the at least two DRAs; wherein the unit cell is configured to operate over a defined overall frequency range; wherein a first DRA of the at least two DRAs is configured to operate over a first frequency range within the overall frequency range; wherein a second DRA of the at least two DRAs is configured to operate over a second frequency range within the overall frequency range that is different from the first frequency range.

Abstract: In an aspect, a polarization converter comprises a plurality of alternating high Dk layers and low Dk layers that alternate along an x-direction; wherein neighboring broad surfaces of the respective high Dk layers and low Dk layers are bonded together. In another aspect, a polarization converter can comprise a plurality of alternating high Dk layers and low Dk layers that alternate along a radial direction; wherein neighboring broad surfaces of the respective high Dk layers and low Dk layers are bonded together. The polarization converter is capable of converting an incoming electromagnetic wave to an outgoing electromagnetic wave having a different polarization.

Abstract: A method of making a dielectric, Dk, electromagnetic, EM, structure, includes: providing a first mold portion comprising substantially identical ones of a first plurality of recesses arranged in an array; filling the first plurality of recesses with a curable first Dk composition having a first average dielectric constant greater than that of air after full cure; placing a substrate on top of and across multiple ones of the first plurality of recesses filled with the first Dk composition, and at least partially curing the curable first Dk composition; and, removing the substrate with the at least partially cured first Dk composition from the first mold portion, resulting in an assembly having the substrate and a plurality of Dk forms including the at least partially cured first Dk composition, each of the plurality of Dk forms having a three dimensional, 3D, shape defined by corresponding ones of the first plurality of recesses.

Abstract: An electromagnetic device includes: a substrate having an elongated aperture having an overall length, L, and an overall width, W, as observed in a plan view of the device, where L>W; a dielectric medium having a dielectric material other than air disposed on the substrate substantially covering the aperture, the dielectric medium having a cross sectional boundary as viewed in the plan view of the device, the cross sectional boundary having at least one recessed portion that recesses inward toward the aperture from a tangent line that partially bounds the cross sectional boundary; wherein the length L is not perpendicular to the tangent line.

Abstract: An electromagnetic, EM, device includes: a 3D body made from a dielectric material having a proximal end and a distal end; the 3D body having a first region toward the center of the 3D body made from a dielectric material having a first average dielectric constant, the first region extending at least partially to the distal end of the 3D body; and the 3D body having a second region outboard of the first region made from a dielectric material other than air having a second average dielectric constant that is greater than the first average dielectric constant, the second region extending from the proximal end to the distal end of the 3D body.

Abstract: An electromagnetic, EM, device includes: a 3D body made from a dielectric material having a proximal end and a distal end; the 3D body having a first region toward the center of the 3D body made from a dielectric material having a first average dielectric constant, the first region extending at least partially to the distal end of the 3D body; and the 3D body having a second region outboard of the first region made from a dielectric material other than air having a second average dielectric constant that is greater than the first average dielectric constant, the second region extending from the proximal end to the distal end of the 3D body.