Abstract: A monitoring system for a satellite is disclosed. The satellite includes a bus, an optical sensor configured to optically detect objects in a first zone extending from the satellite, and a solar assembly comprising a solar panel and a radar device. The radar device can be configured to detect objects in a second zone, different from the first zone, extending from the satellite in a direction transverse to a surface of the solar panel.

Abstract: A new class of feed horns is provided based on the use of metamaterial printed circuit board (PCB) liners on the walls of the feed horns. These feed horns may be implemented to achieve low cost operation. PCBs making up the metamaterial liner may be assembled together in such a manner as to form a feed horn with a square or rectangular aperture shape, although other suitable shapes are possible. These PCBs may be fabricated from standard low cost, off-the-shelf dielectric material. A conductor artwork pattern on the PCB surface forming the interior surface of the feed horn can be designed such that the PCB feed horn yields radio frequency (RF) properties similar to that of a corrugated feed horn. A simple flat plate ground plane bonded to the back side of the PCB can serve as the feed horn structure.

Abstract: Examples of the present invention include metamaterials, including metamaterial lenses, having material properties that approximate the behavior of a material with low (0<n<1) effective index of refraction. Metamaterials may be designed and tuned using dispersion engineering to create a relatively wide-band low-index region. A low-index metamaterial lens created highly collimated beams in the far-field from a low-directivity antenna feed.

Abstract: Examples of an antenna tile and a method of manufacturing the same are provided. An antenna tile may include one or more antenna patch elements, a circuit board, and a support structure. The one or more antenna patch elements may radiate radio frequency (RF) signals, and each of the one or more antenna patch elements may include a conductive layer. The circuit board may be disposed between the one or more antenna patch elements and the support structure. The support structure may include one or more ground cavities. The one or more ground cavities may be integrated into the support structure and may be electrically conductive. The one or more ground cavities may resonate standing waves, and the one or more ground cavities may be disposed below the respective one or more antenna patch elements.

Abstract: Examples of the present invention include metamaterials, including metamaterial lenses, having material properties that approximate the behavior of a material with low (0<n<1) effective index of refraction. Metamaterials may be designed and tuned using dispersion engineering to create a relatively wide-band low-index region. A low-index metamaterial lens created highly collimated beams in the far-field from a low-directivity antenna feed.

Abstract: A new class of feed horns is provided based on the use of metamaterial printed circuit board (PCB) liners on the walls of the feed horns. These feed horns may be implemented to achieve low cost operation. PCBs making up the metamaterial liner may be assembled together in such a manner as to form a feed horn with a square or rectangular aperture shape, although other suitable shapes are possible. These PCBs may be fabricated from standard low cost, off-the-shelf dielectric material. A conductor artwork pattern on the PCB surface forming the interior surface of the feed horn can be designed such that the PCB feed horn yields radio frequency (RF) properties similar to that of a corrugated feed horn. A simple flat plate ground plane bonded to the back side of the PCB can serve as the feed horn structure.