grating lobes will be enhanced. For example, an antenna tilt in the X-axis direction, </>r = 0°, will have little or no effect upon F-axis grating lobes. This can be seen by referring to the subarray pattern in Fig. 7; a F-axis grating lobe remains in the null when the pattern is shifted in the X-axis direction. The complete field pattern, main beam plus grating lobes, is summarized in Fig. 15 for a ground cut along the X-axis and the 45° axis. It can readily be seen that the grating lobes and sidelobes are considerably lower along the 45° side. This analysis has assumed minimal mechanical separations between the 10.43 m
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