A base-station cellular communicationsystem utilizes arrays of f/2 dipoles as transmitting and receiving antennas. Assuming that each element is lossless and that the input power to each of the f/2 dipoles is 1 watt, determine at 1,900 MHz and a distance of 5kmthe maximum
(a) radiation intensity Specify also the units.
(b) radiation density (in watts/m^2) for each ?/2 dipole. This determines the safe level for human exposure to EM radiation.