From: Effect of Facet Displacement on Radiation Field and Its Application for Panel Adjustment of Large Reflector Antenna
δ/rad
cosδ/%
sin δ/%
|E|/%
ɛ
−0.316 7~ + 0.316 7
5.23
1.69
5
λ/40
−0.448 5~ + 0.448 5
10.98
3.43
10
λ/28
−0.55~ + 0.55
17.3
15
λ/23