Illumination of Parabolic Dish Antennas
Joachim Köppen DF3GJ ... Kiel, Sep 2022


Some brief explanations

This tool computes the properties of circular dish antennas, depending on their illumination
Frequency [GHz]
Antenna: [wavel.]      [m]
Dish diameter
Surface <ε²>
<δ²>, correl.[m]
Effective diameter
ideal HPBW [deg]
true HPBW [deg]
Gain(theo), Dmax
F/D

ΩA, ηA
ΩB,-20, ηB
ΩB,FN, ηB
Ωside, ηside
Ωrear, ηrear
η: illum., spill-over
Ωspill, ηspill


edge taper [dB]

illumination pattern:
(r/R)
0 ... 0.17
0.17 ... 0.33
0.33 ... 0.5
0.5 ... 0.67
0.67 ... 0.83
0.83 ... 1


Mouse position


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