Simulating common-mode current in a coaxial feed line


The vast majority of the antennas we use today are fed via coaxial cables. But when modeling antennas, the coaxial feed lines are almost always skipped. Due to this, the common-mode current that may be present in the coax and may influence the antenna operation is never examined.

This page is a shortened and modified version of the article published in the QEX magazine (07/08-2021).