The effect of the thin-wire approximation and the source gap model on the high-frequency integral equation solution of radiating antennas

The effect of using the thin-wire approximation in the integral equation solution of radiating antennas is discussed in this communication. In addition, the effect of having a source region which varies with the number of matching points used for solving the integral equation is considered. It is found that these effects can cause large errors in the solution at high frequencies and may cause appreciable error in the time domain response of the antenna if it is calculated by Fourier inversion.