9. (15 points) This problem is taken from 12-28 of the course textbook, Adams and Lee. Consider an array of 2 horizontal (x=-directed) short dipoles on the x axis, spaced X/2 apart and equally excited (a 0). Write down the far field expression of this co-lnear array. Sketch the radiation pattern of this array (i) in the xy plane, (ii) in the xz plane, and (iii) in the yz plane. 9. (15 points) This problem is taken from 12-28 of the course textbook, Adams and Lee. Consider an array of 2 horizontal (x=-directed) short dipoles on the x axis, spaced X/2 apart and equally excited (a 0). Write down the far field expression of this co-lnear array. Sketch the radiation pattern of this array (i) in the xy plane, (ii) in the xz plane, and (iii) in the yz plane