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A dipole with a length of 0.5A was positioned with its center at the origin and operated at a frequency of 1 GHz. It
A dipole with a length of 0.5A was positioned with its center at the origin and operated at a frequency of 1 GHz. It is supplied with a current (lo) of 0.2 A. The antenna is aligned in the z-axis direction. (a) Find the power densities at r = 100 m, 0 = 90-, $ = 0. (b) Find the power densities at r = 50 m, 0 = 45-, $ = 45-
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ANSWER To calculate the power density at a given point in the radiation field of a dipole antenna we can use the formula Pr 30 Er 2 r2 Z0 where Pr is the power density at the point r Er is the electri...
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Physics
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
2nd edition
77339681, 978-0077339685
