A dual polarized antenna assembly that can be used in connection with rail-based high speed data transmission is provided. One or more high gain directional antennas can be included within a single package such that each package can include a waveguide feed, first and second probe feed assemblies terminating at the waveguide feed, and a horn flair coupled to a first end of the waveguide feed. The first probe feed assembly can be terminated orthogonally with respect to the second probe feed assembly, each probe feed assembly can be fed separately and radiate a linearly polarized signal into the waveguide such that each linearly polarized signal is parallel to the respective probe feed assembly, and each linearly polarized signal can propagate independently through the waveguide to the horn flair, which can couple each linearly polarized signal to free space.

An apparatus for mitigating element pattern ripple includes an inner cone, an outer cone, at least one driven element, and at least one director. The outer cone is coupled to the inner cone. The at least one driving element is coupled to the outer cone and is configured to produce at least one primary ray. The at least one director is coupled to the outer cone and is configured to direct the at least one primary ray. The inner cone and the outer cone may be concentric. The at least one driven element may include multiple driven elements. The at least one director may include multiple directors. A number of directors may be equal to a number of driven elements.

An apparatus for mitigating element pattern ripple includes an inner cone, an outer cone, at least one driven element, and at least one director. The outer cone is coupled to the inner cone. The at least one driving element is coupled to the outer cone and is configured to produce at least one primary ray. The at least one director is coupled to the outer cone and is configured to direct the at least one primary ray. The inner cone and the outer cone may be concentric. The at least one driven element may include multiple driven elements. The at least one director may include multiple directors. A number of directors may be equal to a number of driven elements.

Systems, methods, and devices relating to reconfigurable antennas are disclosed.

Systems, methods, and devices relating to reconfigurable antennas are disclosed.

There is described a dielectric polariser for a bicone antenna. The polariser can include radiating vanes that are spaced circumferentially around an aperture of the bicone antenna. The vanes are orientated at 45? to the polarised waves propagated from the antenna in order to circularly polarise the linearly polarised waves. The polariser can be configured for manufacture using a 3D printing process. Surfaces of a central hub of the polariser can be metallised to provide the radiating surfaces of the antenna. This removes the need to use separate antenna elements. Alternative arrangements of 3D printed dielectric polariser are disclosed for use with antenna horns.

There is described a dielectric polariser for a bicone antenna. The polariser can include radiating vanes that are spaced circumferentially around an aperture of the bicone antenna. The vanes are orientated at 45? to the polarised waves propagated from the antenna in order to circularly polarise the linearly polarised waves. The polariser can be configured for manufacture using a 3D printing process. Surfaces of a central hub of the polariser can be metallised to provide the radiating surfaces of the antenna. This removes the need to use separate antenna elements. Alternative arrangements of 3D printed dielectric polariser are disclosed for use with antenna horns.

A multi-mode composite antenna includes two crossed dipole elements each consisting of a bow-tie antenna having two bow-tie antenna segments, and a conductive tube which houses signal transmission lines connected to each bow-tie antenna segment. A conductive flared portion surrounds the conductive tube and forms a monopole element. The bow-tie antenna segments are shaped so that slots extend between each adjacent bow-tie antenna, each slot forming a tapered slot antenna that has a pair of non-linear curved edges that diverge from each other.

A multi-mode composite antenna includes two crossed dipole elements each consisting of a bow-tie antenna having two bow-tie antenna segments, and a conductive tube which houses signal transmission lines connected to each bow-tie antenna segment. A conductive flared portion surrounds the conductive tube and forms a monopole element. The bow-tie antenna segments are shaped so that slots extend between each adjacent bow-tie antenna, each slot forming a tapered slot antenna that has a pair of non-linear curved edges that diverge from each other.

An antenna comprises a coil element, a first metallic plate element, a second metallic plate element and terminals. The first metallic plate element and the second metallic plate element each have the shape of a triangle or an isosceles trapezoid. Further, the first metallic plate element and the second metallic plate element are mirror symmetric with respect to a symmetry plane that is perpendicular to the longitudinal direction. The antenna provides a wider area of use at small size and can thus be used for different transmission technologies, such as NFC and UWB.