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), D
max
F/D
Ω
A, η
A
Ω
B,-20, η
B
Ω
B,FN, η
B
Ω
side, η
side
Ω
rear, η
rear
η: illum., spill-over
Ω
spill, η
spill
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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