When designing conformal/faceted reflectarrays, the non planar geometry prevents the use of canonical fast Fourier transform (FFT) algorithms so that the computational complexity required by phase-only synthesis techniques can become prohibitive for the large antennas normally exploited in satellite applications. In this paper, a new approach, based on the use of a proper approximation of the far field pattern expression, is presented. The method allows a massive use of FFTs, along with advanced FFT algorithms, known as FFTW, capable to adapt their performance to the hardware platform. The results for a faceted shaped-beam reflectarray providing the Galaxy 17 coverage are reported.
Fast phase-only synthesis of faceted reflectarrays / Capozzoli, Amedeo; Curcio, Claudio; D'Elia, Giuseppe; Liseno, Angelo; D., Bresciani; H., Legay. - (2009), pp. 1329-1333. (Intervento presentato al convegno Third European Conference on Antennas and Propagation tenutosi a Berlin nel 23-27 Marzo 2009).
Fast phase-only synthesis of faceted reflectarrays
CAPOZZOLI, AMEDEO;CURCIO, CLAUDIO;D'ELIA, GIUSEPPE;LISENO, ANGELO;
2009
Abstract
When designing conformal/faceted reflectarrays, the non planar geometry prevents the use of canonical fast Fourier transform (FFT) algorithms so that the computational complexity required by phase-only synthesis techniques can become prohibitive for the large antennas normally exploited in satellite applications. In this paper, a new approach, based on the use of a proper approximation of the far field pattern expression, is presented. The method allows a massive use of FFTs, along with advanced FFT algorithms, known as FFTW, capable to adapt their performance to the hardware platform. The results for a faceted shaped-beam reflectarray providing the Galaxy 17 coverage are reported.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
