Diffraction model Theory: Consider a simple dipole antenna placed atthe origin, oscillating along the zeaxis. The dipole radiates with a pattern (in spherical coordinates): (1) E9 : -pn [(2 % exp[rf(k rwt + 41)] siniQJQ where on is the amplitude ofthe dipole emitter, and it is a phase relative to some reference. Suppose the dipole is shifted to a new position r', and we are observing at position r. Let's make several adjustments to notation to make is similarto the notes. 1. we will orient the dipole so that it oscillates in the x direction, and we will observe at a point {x, Z], with xA. 3. Forsimplicity, we will also neglect the slightvariation in the radiated polarization direction, since x