This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Dipole antenna impedance.svg Impedance of dipole antenna Created in gnuplot by Mysid Based on JPEG Image ZiiEN by User LP Created with Gnuplot set ytics set grid set key off set xrange set yrange set size square set label Re at graph tc rgbcolor FF set label Im at graph tc rgbcolor FF set ylabel Resistance Ohms set