Could you please help me to understand some basic concepts about antenna polarization. The books I have are really confusing and do not have examples that I can learn from. Please look at the attached E plane radiation pattern image I attached (figure 13). The books image (figure 13) tells me that the attached image is a E plane radiation pattern which means that the E field is perpendicular to the earth (so vertically polarized). The books image (figure 13) tells me that the attached image dipole is located on the line from 90 degrees to 270 degrees. How can you have a vertically polarized antenna with a dipole positioned horizontally (90 degrees to 270 degrees)? What am I missing here? Im sure the book is accurate I just dont know how to read the radiation patter. Please help Figure 19 (attached) clearly correlates to horizontal polarized dipole but figure 13 says that it is a vertical polarized dipole.