A small circular parabolic reflector has a diameter of 1m, frequency of 3 GHz, and aperture efficiency 68%. Determine:

 A small circular parabolic reflector has a diameter of 1m, frequency of 3 GHz, and aperture efficiency 68%. Determine:

a) Physical area

b) Maximum effective area

c) Maximum directivity

d) Maximum power that can be delivered to the load if the power density of the incident wave is 10 uW/m2. Assume no additional losses.