Fast analysis of large antennas--A new computational philosophy

A new computational approach is presented which allows a fast analysis of radiation properties of large antennas. The radiated field is first computed using conventional techniques, e.g., physical optics and geometrical theory of diffraction, in prescribed sampled space directions, roughly one direction per lobe. Then sampling theory is used to reconstruct the complete radiation diagram. Numerical experiments are presented in the last part of the paper, showing the excellent performance of the method.