Speaker
Description
This paper describes a Ka band antenna S/S for downloading data from Low Earth Orbit satellites (LEO’s) with costant power flux density (PFD) on earth, as requested in typical Low Earth Orbit satellites (LEO’s) orbiting at 500 Km attitude. The antenna consists of a small electronically steerable planar phased array magnified by a rotationally symmetric double reflector system. The passive radiating antenna S/S has been experimentally validated through an RF demonstrator. A satisfactory correlation of the RF model to the experimental results has been obtained. The whole antenna S/S has been conceived for operation with centralized amplification and ferrite phase shifters. However a potential active DRA evolution using GaN technology is possible in medium term.
| ESA Technical Officer | Peter Rinous |
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