For a standard quarter-wave monopole antenna, the physical antenna size and the wavelength (λ) are related such that the length is equal to:

Which of the following statements is/are correct regarding antenna gain? I. It characterises the directivity of the radiation. II. It is the ratio of maximum intensity obtained in a certain direction by the antenna to the intensity obtained from an isotropic radiator of the same total power.

If polar lines are plotted from the center of an antenna in different directions such that the length of each line is proportional to the intensity Sr of radiation in that direction, the _______ of these lines gives the radiation pattern of the antenna.