I am a new here. I have a problem:
– I have to find the size of the transmitter antenna. I know:
– frequency used: f
– the satellite’s orbit d
– the covered area size within the 3dB of transmitted power
how to find the size and the gain of the antenna?? I did not find any patterns on the Internet 🙁
I am assuming you are talking about parabolic antenna. Well the first thing u need to know is the required gain, which you may calculate from the link budget. Once u have that, u can use the formula
Gain=20log (7.4 D f )
Where D is ant dia in mtrs
f is freq in GHz.
Does that solve ur purpose ??