Antenna Gain Pattern:
The gain G of a certain microwave dish antenna can be expressed as a function of angle by the equation:
G(θ)= |sinc 4θ| for –π/2 ≤ θ ≤ π/2
Where θ is measured in radians from the boresite of the dish, and sinc x = sin(x)/x. Plot this gain function on a polar plot, with the title "Antenna Gain vs θ" in boldface.