Calculating Gain of a Satellite Antenna

I was just given this question and i cannot work it out:

Calculate the gain if Effective Aperture is 24m^2 and Frequency is 12GHz.

Can someone shed some light on this for me please?

Try :- http://en.wikipedia.org/wiki/Antenna_aperture
Frank

Thanks

G = 4pi*Ae / λ2
G = 4pi * 24 / 0.02498
G = 56.84 dB

Cheers.



Thanks

G = 4pi*Ae / λ2
G = 4pi * 24 / 0.02498
G = 56.84 dB

Cheers.