Title :
On the use of FFT in surface shaping of contoured beam antennas
Author :
Sorensen, S.B. ; Lumholt, M. ; Viskum, H.-H.
Author_Institution :
TICRA, Copenhagen, Denmark
Abstract :
A comparison of the fast Fourier transform (FFT) and direct numerical integration to solve the PO integral is presented, with special emphasis on the achieved accuracy and the CPU time consumption. The concept of second order FFT is introduced. It is shown that the accuracy of FFT is not compatible with the accuracy requirements expected by analysis codes for satellite communication antennas.
Keywords :
antenna theory; fast Fourier transforms; integral equations; integration; multibeam antennas; physical optics; reflector antennas; satellite antennas; CPU time consumption; PO integral; accuracy; analysis codes; contoured beam antennas; direct numerical integration; fast Fourier transform; satellite communication antennas; second order FFT; surface shaping; Apertures; Design optimization; Directional antennas; Fast Fourier transforms; Interpolation; Iterative methods; Receiving antennas; Reflector antennas; Satellite antennas; Satellite communication;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.958914
