Application: λ/2 monopole. A half-wavelength monopole antenna is used for FM transmission at 100 MHz. The antenna is placed vertically above a conducting surface. Find:
(a) The antenna length.
(b) The radiation resistance of the monopole.
(c) The radiated power of the monopole for a current I0.
(d) The directivity of the monopole at θ= π/2.