Linear antenna array. Linear antenna array. An array antenna is made of six identical elements, each a half-wavelength dipole, and is fed with identical currents, all in phase. Spacing of the elements is one-half wavelength. Assume the antennas are placed on the x axis, and are parallel to the z axis. Find:
(a) The array field radiation pattern.
(b) The array power radiation pattern.
(c) The direction of maximum radiation.
(d) The direction of the side lobes.