6. A radar antenna on the earth with a directive gain of 100 dB transmits a frequency a of 10 THz with a power of 10 GW
Posted: Sun May 15, 2022 7:19 pm
6. A radar antenna on the earth with a directive gain of 100 dB transmits a frequency a of 10 THz with a power of 10 GW to an antenna of 100 m² on a spaceship near Vega. Later the same earth antenna receives a signal transmitted from an antenna on the spaceship which transmits 10 MW with a frequency of 100 GHz to the earth. Calculate (a) The incident E field intensity on the antenna of the spaceship (15 points) (b) The power captured by the antenna on the spaceship (10 points) (c) The incident E field intensity at the earth radar antenna (15 points) (d) The power absorbed by the earth antenna from the spaceship antenna (10 points)