Abstract
This review deals with the design of a new reconfigurable beam antenna used to improve the efficiency of spatial telemetry links on Nano-Satellite. Advances in this domain show the needs to serve some applications with special electromagnetic beams and polarization patterns especially from LEO and MEO Space-Earth links. The RF front end must be capable to switch from high gain directive pattern to special pattern called Isoflux where the gain must be concentrated at high elevation angles with another challenge also the circular polarization. The content is a part of the CNES project that serves for multimode beam forming applications. This agile beam antenna is not built on the well-known array concept: AESA stands for Agile Electronically Scanned Array but using a new approach called ARMA standing for Agile Radiating Matrix Antenna. Contributions will show the small size elementary antenna of ARMA called Pixel, the polarization circuits that fit the challenges of the Nano-Satellite dimensions, the enhancement in the circular polarization requirements and theoretical and experimental comparison. Special beam forming required in the telemetry applications are achieved with better gain especially for the aim of wide beams. The use of the new approach will show the beam forming advantage of radiating the energy to high elevation angles.
Highlights
Nano-Satellites are very small platforms whose mass does not exceed 10Kg
ARMA approach shows big advantages to be used in comparison with the classical antenna arrays in linear polarization [7, 8]; this made it possible to a major axis of research around antennas with radiation agility with circular polarization
In the 1D solution are obtained using arrays (AESA) and ARMA will be compared in terms of gain at far elevation angles and the axial ratio to show one of the advantages of the new approach
Summary
Nano-Satellites are very small platforms whose mass does not exceed 10Kg. They are intended to be used for services which are not desirable to have a large payload. The major advantage of this platform is that it allows rapid to space: the development times are relatively short and the costs could be considerably lowered to 20KЄ/Kg; against 100kЄ/Kg; today with the arrival new launcher manufacturers Another driving force behind the development of space technologies is the creation of the Nano-satellite standard "Cube-Sat", the first prototypes of which have been deployed in space since 2003. This standard is a modular format consisting of cubes of 10 cm of edge (format "1U") (Figure 1); Each of these cubes contains its own solar panels, weighs less than 1Kg and can be assembled in clusters of 2, 3, 6 or 12 to compose larger satellites and more powerful, respectively "2U", "3U", "6U" and "12U". In the rest you will find, the specifications of the project, the solution with the manufacturing steps and simulation-measurements validations
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