A Multi-Perspective Examination of the Physics of Electromagnetic Radiation

摘要

Three different perspectives of electromagnetic radiation are presented here. The first employs the electric field kink model, the second is based on a technique called FARS(Far-Field Analysis of Radiation Sources), and the third uses time-domain solutions obtained from the TWTD (Thin-Wire Time Domain) model. The kink model demonstrates qualitatively that radiation is produced by "wriggling" a charge. The latter two provide more quantitative results, showing that radiation for a straight dipole can come not only from the source region and ends but also from along its length.