The present invention relates to a parabolic antenna having a base, mounting pole head unit, rear structure, support pole, low noise converter, and reflector, said reflector being made in a single piece in laminated expanded screen, and having a perfectly parabolic, self-structured shape without any bearing frame, fastened to the rear structure of the parabolic antenna by means of a fastening unit, and having a reinforcement edge facing away from the concavity of the reflector, and rolled or in one or two levels in the peripheral region of the reflector, said reflector having one or more non-perforated or smooth sections, in arbitrary vertical, and/or horizontal orientations, extending over the fastening unit.

Systems and methods for operating a deployable reflector system. The methods comprising: causing a proximal end of a first link element (LE) located at a first end of a scissoring rib assembly (SRA) to slidingly engage a hub; allowing a proximal end of a second LE of SRA to pivot relative to the hub so as to cause scissor motion of SRA while the first LE is slidingly engaging the hub; causing a distal end of a third LE located at a second end of SRA to pivot relative to the edge member during the scissor motion of SA; allowing the edge member to slidingly engage a fourth LE located at the second end of SRA during pivotal motion of the third LE; and using the edge member to cause vertical movement of a peripheral edge of a reflector relative to the hub while the edge member slidingly engages the fourth LE.

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 structure includes a base in a central portion of the deployable reflector structure. The deployable reflector structure further includes one or more arms configured to extend from the base. The deployable reflector structure also includes an expandable structure coupled to the one or more arms. The deployable reflector structure further includes a reflector coupled between the one or more arms and the base. A drive mechanism may be configured to extend one or more of the arms and the expandable structure with a drive cable.

A reflector assembly includes a frame centered about a longitudinal axis and having a first height along the axis. A curved body extends from the frame and has a second height along the longitudinal axis could be greater than the first height. A stretchable membrane has an electromagnetically reflective surface and is secured to the curved body.

A shape memory alloy article and method a deploying the article in deep space is provided. The shape memory alloy article may be an interlaced mesh structure. The article may be stored in a deformed configuration in a container for transport aboard a satellite or spacecraft. Upon reaching a desired location the article is removed from the container and heated to allow for transformation to an operating configuration.

A test installation for simulating multiple reflections of GNSS signals, the installation including a top screen that is semitransparent in a radio frequency portion of the electromagnetic spectrum, wherein the top screen is substantially dome-shaped; a bottom screen that is reflective in the radio frequency portion of the electromagnetic spectrum; the top semitransparent screen over the bottom reflecting screen; and a GNSS antenna connected to a receiver and located between the top screen and the bottom screen.

The present invention relates to a parabolic antenna having a base, mounting pole head unit, rear structure, support pole, low noise converter, and reflector, said reflector being made in a single piece in laminated expanded screen, and having a perfectly parabolic, self-structured shape without any bearing frame, fastened to the rear structure of the parabolic antenna by means of a fastening unit, and having a reinforcement edge facing away from the concavity of the reflector, and rolled or in one or two levels in the peripheral region of the reflector, said reflector having one or more non-perforated or smooth sections, in arbitrary vertical, and/or horizontal orientations, extending over the fastening unit.

An antenna reflector compatible with applications at high frequencies between 12 and 75 GHz and suitable for a paraboloidal or ellipsoidal geostationary space environment comprising a reflective face to focus electromagnetic radiation, comprises a superposition of at least one layer comprising a fiber composite material, the at least one layer of fiber composite material comprising angular sectors arranged around a center, each defined by a first central angle and oriented in a radial direction the median of the central angle, each of the angular sectors comprising the fiber composite material comprising first and second fibers oriented different first and second respective directions, the first direction forming a second angle with the radial direction of the angular sector. The angular sectors comprise three concentric areas: a central area, a peripheral area and an intermediate area situated between the central area and the peripheral area, the intermediate area forming a rim.

A method is provided which includes: defining at least one radiofrequency performance objective to be produced on a selected coverage area on the ground; producing a rigid shell having a predefined profile; producing a reflecting flexible membrane; determining, by successive iterations, N optimum local deformations to be applied at N different points of the flexible membrane; producing N rigid supporting bars of different lengths corresponding to the optimum local deformations to be applied to the flexible membrane; and positioning and rigidly fixing the flexible membrane onto the rigid shell via the N supporting bars.