1. A deep space communication system uses a Cassegrain antenna of diameter 70m at a frequency of 8.45 GHz.
i) Determine the gain of this dish (in dBi) assuming an aperture efficiency of 80%
ii) Determine the power received by this dish from a transmission from a satellite having antenna gain 2.2 dBi and transmitter power of 10 W at a distance of 180 million kilometers.
2. i) A transmitting antenna that radiates a power of 11Watts, has gain of 3 dBi and efficiency 0f 90%. Calculate the required gain and effective aperture of the receiving antenna at a distance of 8 km operating at 7Ghz. The expected power at the receiver antenna should be 2 watts.
ii) Calculate its Effective Isotropic radiated power.
i) Determine the gain of this dish (in dBi) assuming an aperture efficiency of 80%
ii) Determine the power received by this dish from a transmission from a satellite having antenna gain 2.2 dBi and transmitter power of 10 W at a distance of 180 million kilometers.
2. i) A transmitting antenna that radiates a power of 11Watts, has gain of 3 dBi and efficiency 0f 90%. Calculate the required gain and effective aperture of the receiving antenna at a distance of 8 km operating at 7Ghz. The expected power at the receiver antenna should be 2 watts.
ii) Calculate its Effective Isotropic radiated power.