Electronic Communication Systems 2nd Edition by Roy Blake

تمرين 4

A Yagi antenna has a gain of 10 dBi and a front-to-back ratio of 15 dB. It is located 15 km from a transmitter with an ERP of 100 kW at a frequency of 10 MHz. The antenna is connected to a receiver via a matched feedline with a loss of 2 dB. Calculate the signal power supplied to the receiver if the antenna is:
(a) pointed directly toward the transmitting antenna
(b) pointed directly away from the transmitting antenna