A reflector for an antenna includes a first shaped region, wherein a curvature of the first shaped region is defined by a corresponding scan angle, and a second shaped region, wherein a curvature of the second shaped region is based on a corresponding scan angle. The curvature of the first shaped region is different than the curvature of the second shaped region.

A computer assisted method for manufacturing a foldable paraboloid antenna includes election of a two-dimensional radial Origami pattern with triangular cells and election of a paraboloid surface. The Origami pattern is projected from the paraboloid surface focus onto the paraboloid surface to print the Origami pattern on the paraboloid surface, obtaining triangles with curved sides. A pattern with triangles with straight sides on the paraboloid surface is obtained by joining vertices of the projected curved-sided triangles. The method includes scaling and calculating centroids of the triangles, to reduce each triangle referenced on the corresponding centroid and to determine spacing, obtaining a mesh with segments and triangular cells delimited by the segments. The triangular cells have triangles of reflective rigid material. The mesh is flexible, so each segment width is at least the sum of the thicknesses of two adjacent rigid triangles, and periphery cells have a rounded outer edge.

To accurately estimate frequency characteristics from structural parameters of a frequency selective surface. A frequency selective surface design apparatus includes an LC generation unit 20 that receives an input of a structural parameter, and generates an inductance L and a capacitance C of a unit cell, a corrected resonance point calculation unit 30 that receives the number n of times of calculation input from an outside, the inductance L, and the capacitance C, models a correction circuit by using a circuit in which a virtual capacitance is connected in parallel via a transmission line to each distribution inductance obtained by division of the inductance L by the calculation number n and the transmission line is terminated at the capacitance C, and calculates a corrected resonant frequency fC from the impedance of the correction circuit, and a characteristic calculation unit 40 that receives inputs of the inductance L, the capacitance C, and the corrected resonant frequency fC, calculates a pre-correction resonant frequency from the inductance L and the capacitance C, obtains a correction coefficient by dividing the corrected resonant frequency fC by the pre-correction resonant frequency, and calculates a corrected return loss and a corrected insertion loss.

An antenna arrangement having a stacked layered structure. The antenna arrangement includes a radiation layer including one or more radiation elements, and a distribution layer facing the radiation layer. The distribution layer is arranged to distribute a radio frequency signal to the one or more radiation elements. The distribution layer includes at least one distribution layer feed. Any of the distribution layer and the radiation layer includes a first electromagnetic bandgap, EBG, structure arranged to form at least one first waveguide intermediate the distribution layer and the radiation layer. The first EBG structure is arranged to prevent electromagnetic radiation in a frequency band of operation from propagating from the first waveguide in directions other than through the distribution layer feed and the one or more radiation elements. The radiation layer and the distribution layer are attached to each other with one or more fastening members including respective deformable tails.

The invention relates to a method for making a dielectric reflectarray antenna, and a dielectric reflectarray antenna made using such method. The method includes removing, from a substrate having a dielectric layer and a first outer metallic layer arranged on one side of the dielectric layer, the first outer metallic layer to form an intermediate substrate. The method also includes cutting the intermediate substrate to integrally form a dielectric reflectarray with an array of dielectric reflector elements of the dielectric reflectarray antenna.

The present invention is a unique process of manufacturing rigid members with precise “shape keeping” properties and with reflective properties pertaining to radio frequency energy, so that air, land, sea and space devices or vehicles may be constructed including parabolic reflectors formed without discrete permanent layering. Rather, such parabolic reflectors or similarly, vehicles, may be formed by homogeneous construction where discrete layering is absent, and where energy reflectivity or scattering characteristics are embedded within the homogeneous mixture of carbon nanotubes and associated graphite powders and epoxy, resins and hardeners. The mixture of carbon graphite nanofiber and carbon nanotubes generates higher electrode conductivity and magnetized attraction through molecular polarization. In effect, the rigid members may be tuned based on the application. The combination of these materials creates a unique matrix that is then set in a memory form at a specific temperature, and then applied to various materials through a series of multiple layers, resulting in unparalleled strength and durability.

Systems and methods for making an antenna reflector. The methods comprise: obtaining a Carbon Nano-Tube (“CNT”) material; cutting the CNT material into a plurality of wedge shaped pieces; and bonding together the wedge shaped pieces using a resin film adhesive to form the antenna reflector with a three dimensional contoured surface.

A device for measuring a physical quantity, including at least a transceiver unit for electromagnetic waves, an antenna-sensor including a sensor integrated into a target antenna having at least one excitation port, the antenna-sensor having a variable impedance with electromagnetic transduction, the measuring device being configured, per predetermined frequency band and independently of the angular difference between the transmission and reception of waves, for measuring the electromagnetic response of the antenna-sensor at least from an ellipticity rate of an electromagnetic field backscattered by the antenna-sensor, the ellipticity rate characterizing the polarization of the electromagnetic field configured to be measured by the transceiver unit, the electromagnetic response being representative, by electromagnetic transduction, of the at least one physical quantity to be measured.

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.

The present invention is a unique process of manufacturing rigid members with precise “shape keeping” properties and with reflective properties pertaining to radio frequency energy, so that air, land, sea and space devices or vehicles may be constructed including parabolic reflectors formed without discrete permanent layering. Rather, such parabolic reflectors or similarly, vehicles, may be formed by homogeneous construction where discrete layering is absent, and where energy reflectivity or scattering characteristics are embedded within the homogeneous mixture of carbon nanotubes and associated graphite powders and epoxy, resins and hardeners. The mixture of carbon graphite nanofiber and carbon nanotubes generates higher electrode conductivity and magnetized attraction through molecular polarization. In effect, the rigid members may be tuned based on the application. The combination of these materials creates a unique matrix that is then set in a memory form at a specific temperature, and then applied to various materials through a series of multiple layers, resulting in unparalleled strength and durability.