1.2m Ku band VSAT antenna - Gregorian dual-optics

Meets Eutelsat's rule that the cross pol performance within the -1 dB transmit beam width is better than 35 dB.

Cross polarisation on axis 35 dB, within 1 dB beam width 35 dB.

Transmit frequency: 14.0 -14.5 GHz  Receive frequency: 10.7 - 12.75 GHz 

Noise temperature = 58K at 10 deg elevation, 53K at 30 deg elevation

Transmit gain=43.3 dBi     Receive gain=41.8 dBi

Off-axis side lobe performance (dBi):

29-25 log q     2.5°<q<7°
+8                 7°<q<9.2°
32-25 log q     9.2°<q<48°
-10                48° < q

Focal length = 76.2 cm, f/D=0.635, Offset angle=22 deg