Plain-language answer: Current distribution shows RF current magnitude and phase along every conductor in the complete antenna system.
Why it matters in the antenna
Radiation, loss, feedpoint impedance, and pattern follow from where current actually flows—including return conductors and unintended coax current.
What to verify
Use the exact frequency and geometry; inspect likely current maxima, feed transitions, loading components, and return paths.
The common mistake
Looking only at the visible radiator and ignoring current on the rest of the system.
Operating boundary
Use the exact documented component, geometry, frequency, power, duty cycle, clearances, and feed/return system. Begin tests at low power and stop for heating, arcing, damaged insulation, or unstable supports.
