An antenna device according to an embodiment of the present invention includes a dielectric layer, a first radiation pattern disposed on the dielectric layer, a second radiation pattern disposed in the first radiation pattern and partially separated from the first radiation pattern, and a transmission line commonly connected to the first radiation pattern and the second radiation pattern.

An antenna structure may include a solid antenna structure and a mesh antenna structure. The mesh antenna structure may be coupled to an outer edge of the solid antenna structure through two or more ribs. The two or more ribs may be configured to extend away from the solid antenna structure to expand the mesh antenna structure and increase a surface area of the antenna structure.

An antenna device according to an embodiments of the present invention includes a substrate layer, a ground layer disposed on a bottom surface of the substrate layer, a radiation control layer disposed on a top surface of the substrate layer, the radiation control layer including a plurality of radiation control patterns formed of a conductive mesh structure, each of the radiation control patterns having a hollow portion, an antenna dielectric layer disposed on the radiation control layer, and an antenna unit disposed on the antenna dielectric layer.

A deployable reflector for an antenna is disclosed. The deployable reflector comprises a deployable membrane configured to adopt a pre-formed shape in a deployed configuration, and an electrically conductive mesh disposed on a surface of the membrane wherein the electrically conductive mesh is configured to permit relative lateral movement between the electrically conductive mesh and the membrane during deployment of the reflector. In the deployed configuration, the conductive mesh adopts the shape of the membrane and forms a reflective surface of the reflector. A method of manufacturing the deployable reflector is also disclosed.

A deployable mesh antenna based on dome-type tensegrity includes: a wire mesh reflector, a dome-type reflector support system, and a peripheral deployable truss which are coaxially arranged; the peripheral deployable truss includes: a annular main rod and end-to-end truss units disposed on the main rod; an outermost cable boundary of the dome-type reflector support system is fixedly connected to the peripheral deployable truss, and the dome-type reflector support system includes: an inner strut ring, an outer circumference of the inner strut ring is connected to radial rib units, each radial rib unit is arranged at a radial direction of the inner strut ring, and the radial rib units are connected through hoop cables; the wire mesh reflector is covered on the dome-type reflector support system to form a parabolic structure, the wire mesh reflector is petal-shaped, and the wire mesh reflector has a grid structure.

A deployable mesh antenna based on dome-type tensegrity includes: a wire mesh reflector, a dome-type reflector support system, and a peripheral deployable truss which are coaxially arranged; the peripheral deployable truss includes: a annular main rod and end-to-end truss units disposed on the main rod; an outermost cable boundary of the dome-type reflector support system is fixedly connected to the peripheral deployable truss, and the dome-type reflector support system includes: an inner strut ring, an outer circumference of the inner strut ring is connected to radial rib units, each radial rib unit is arranged at a radial direction of the inner strut ring, and the radial rib units are connected through hoop cables; the wire mesh reflector is covered on the dome-type reflector support system to form a parabolic structure, the wire mesh reflector is petal-shaped, and the wire mesh reflector has a grid structure.

Circularly polarized directional antennas and methods of fabrication are provided. An antenna comprises conductive elements above a conductive reflector. The conducting elements are spaced radially outward from the center axis. The elements may be spaced equidistantly about each other or may be spaced between 10 and 80 degrees apart. The elements may be straight or curved. The elements may be a parallel to the reflector or may curve away or toward the reflector. The lengths and widths of each conductive element are adjusted to create or receive a circularly polarized wave of particular rotation based on the location in the element system. The elements are located within a printed circuit board that is bonded to a coaxial cable feedline placed above a metallic reflector. Each conducting element comprises a metallic wire.

A mesh structure is a knitted fabric or woven fabric including element wires of a zirconium copper fiber or element wires of a stainless steel fiber.

An electromagnetic reflector composed of a non-knitted, non-metallic carbon-based material mesh, antenna system incorporating the reflector and method for fabrication are disclosed.

An antenna device according to an embodiment of the present invention includes a dielectric layer, a first radiation pattern disposed on the dielectric layer, a second radiation pattern disposed in the first radiation pattern and partially separated from the first radiation pattern, and a transmission line commonly connected to the first radiation pattern and the second radiation pattern.