Compact Dual Offset Gregorian Antenna
The design of a compact dual offset antenna of Gregorian type at Ku band is described here. The feed horn operating from 10.7 GHz to 14.5 GHz is a small transversely corrugated type with optimised corrugation depths as shown in Figure 1.
The side and front views of antenna are shown in Figure 2 and Figure 3. The projected aperture diameter of the antenna is 1.1 m. Predicted far-field patterns at 10.7 GHz and 14.5 GHz are shown in Figure 4 and Figure 5.