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The scattered far field from a halfwave dipole illuminating a perfectly conducting quarterplane is calculated. The calculation is based on a calculation of the radial electric and magnetic field components on the far-field sphere, using uniform geometrical theory of diffraction...

The paper demonstrates how multi-beam antennas used for contoured beams in communications satellites are capable of providing very high isolation to adjacent service areas, even with antenna diameters that are smaller than dictated by the normal design rule. The isolation...

Contoured beam satellite antennas are usually designed by optimizing the antenna gain pattern over the desired coverage such that the minimum gain is maximized and the ripple throughout the region minimized. Furthermore, if frequency reuse is applied by means of...

Contoured beam antennas may conveniently be designed by shaping the reflector surface to produce a gain pattern which closely resembles the prescribed coverage area. The most appropriate technique is based on using physical optics (PO) to calculate the far-field pattern...

The effects of reflector surface distortions for a paraboloidal pencil beam reflector antenna are well understood. The peak gain reduction is proportional to the surface error squared, whereas the influence in the side-lobe region is linearly proportional to the surface...