Strategy for reflector pattern calculation  Let the computer do the work
Abstract
Using high frequency approximations, the secondary pattern of a reflector antenna can be calculated by numerically evaluating a radiation integral I(u,v). In recent years, tremendous effort has been expended to reducing I(u,v) to Fourier integrals. These reduction schemes are invariably reflector geometry dependent. Hence, different analyses/computer software development must be carried out for different reflector shapes/boundaries. It is pointed out, that, as the computer power improves, these reduction schemes are no longer necessary. Comparable accuracy and computation time can be achieved by evaluating I(u,v) by a brute force FFT described in this note. Furthermore, there is virtually no restriction on the reflector geometry by using the brute force FFT.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 April 1986
 DOI:
 10.1109/TAP.1986.1143856
 Bibcode:
 1986ITAP...34..592L
 Keywords:

 Antenna Radiation Patterns;
 Electromagnetism;
 FourierBessel Transformations;
 Reflectors;
 Computer Programs;
 Computer Techniques;
 Fourier Analysis;
 Integrals;
 Communications and Radar