Performance Comparison of Symmetric and Offset Reflector Antennas Adaptively Illuminated by Novel Triple Mode Feedhorn

Table 3

Peak copolarization gain and peak cross-polarization level (below peak gain) values at 7.73 GHz.

Mode Combination	Peak Co-Pol Gain [dBi]	Peak Cross-Pol Level [dB]
TE11 (50%) + TM01 (50%) for +90^∘	34.94	−11.54
TE11 (50%) + TE21 (50%) for +90^∘	34.63	−16.13
TE11 (40%) + TM01 (30%) + TE21 (30%) for +90^∘	37.28	−20.85