14. The radiation pattern of the half-wave dipole antenna is: (Circle the correct answer) a. A figure "8" in all planes b. A figure "8" in the plane containing the antenna c. A circle in the plane normal to the antenna axis and a figure "8" in the plane containing the antenna d. A circle in all planes 15. The radiation pattern of an antenna indicates: (Circle the correct answer) a. The direction of wave propagation b. The intensity of the radiated field at a constant distance from the antenna c. The intensity of the radiated field as a function of the distance from the antenna d. The constant phase surfaces of the radiated field 16. The effective area of an antenna with gain gr receiving a signal of wavelength A is: a. (N4)0.5 gr b. (N4T) gr c. (A2/4T) gr 2 d. (A2/4) gr