Dipole Antennas

The simplest antenna is a dipole, which is either end fed (a pole on a pole) or center fed
(a pole off a pole). Figure 13.2 shows the E-plane and the H-plane and the isometric
radiation pattern. Imagine if you sat on the doughnut-shaped isometric pattern and
squashed it. You would extend the radius looking down on the doughnut from the top,
but you would also squash the profile of the doughnut looking at it from the side.
That’s the theory of antennas in a nutshell (or rather a doughnut).