In the last years, direct radiating arrays (DRA) are emerging as an attractive option for satellite communications. Recent works have demonstrated the feasibility of high performance DRAs when pencil beams with reduced angular scanning are required. The realization of “wide” scanning angles, f.i., the possibility to scan a beam all over the Earth surface from a geostationary orbit, poses a number of challenges that will be addressed in this contribution. After focusing on the class of sparse ring arrays, a general bound on the achievable performances and on the maximum dimension of the feed will be given, together with some preliminary synthesis results.
On the Generation of Highly Steerable Pencil Beams with Isophoric Sparse Arrays / Bucci, OVIDIO MARIO; T., Isernia; A., Morabito; S., Perna; D., Pinchera; A., Catalani. - (2011), pp. 1-6. (Intervento presentato al convegno 33rd ESA Antenna Workshop on Challenges for Space Antenna Systems tenutosi a Noordwijk, The Netherlands nel October).
On the Generation of Highly Steerable Pencil Beams with Isophoric Sparse Arrays
BUCCI, OVIDIO MARIO;
2011
Abstract
In the last years, direct radiating arrays (DRA) are emerging as an attractive option for satellite communications. Recent works have demonstrated the feasibility of high performance DRAs when pencil beams with reduced angular scanning are required. The realization of “wide” scanning angles, f.i., the possibility to scan a beam all over the Earth surface from a geostationary orbit, poses a number of challenges that will be addressed in this contribution. After focusing on the class of sparse ring arrays, a general bound on the achievable performances and on the maximum dimension of the feed will be given, together with some preliminary synthesis results.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
