Reflector antennas with suppressed sidelobes

The radiation characteristics of a class of two-dimensional reflector antennas is investigated. An array of radiators is used to control the aperture field distribution and hence the gain and the sidelobe levels of the far radiated fields. The method of moments is used to find the induced surface current distribution, the aperture field, and the far-field pattern. Since the problem is two-dimensional, all radiators are considered to be line sources. The numerical results show that the gain is increased and the sidelobe levels are greatly reduced for strip, corner, circular, and parabolic reflector antennas by using three line sources with proper choice of their positions, amplitudes, and phase.<>