A numerical approach for synthesizing dual-shaped offset reflector antennas

It has been observed that numerical difficulties may arise when the exact synthesis techniques are applied, especially in the vicinity of the center region. The authors investigate the possibility of circumventing these difficulties by starting the synthesis procedure not from the periphery, as is done conventionally, but from the center point instead. Numerical results are presented, and it is shown that the periphery condition, namely, that the projected aperture of the main reflector be circular, is approximated very well by the solution obtained via the synthesis procedure presented here. >