A note on the shaping of dual reflector antennas

An analytical technique, based on a study by Lee et al. (1979), is used to determine the reflector profiles in a symmetrical-shaped oval reflector antenna system. The approach has computational simplicity, involving a single first-order differential equation, and uses very accurate feed pattern expressions. Shaping is carried out by the Runge-Kutta method: since computation starts from the center, numerical error is minimal in the central regions which handle most of the energy. A typical problem is solved, using both this technique and an earlier one, and results are compared.