It is theoretically the case that if the antenna area is doubled, the gain of the antenna also increases twice. (3dB)
How is that with a Prime Focus Dish, which is already very well illuminated with a patch (POTY) at f / D of 0.45?
In this case, is there a profit if the reflector surface is enlarged as shown in the picture?
I can not imagine that in the "over iluminating" of the dish are still 3dB performance.
73´s de Robert, DD4YR