Analysis of Impulse-Radiating Antennas with Centered and Offset TEM Feed Structures

Abstract

An offset IRA and a center-fed IRA were numerically modeled and analyzed. The rflected voltages in the feed transmission line and the radiated electric field in the direction of maximum radiation were graphed as functions of normalized time. The amplitude of the reflected voltage was lower for the offset IRA than it was for the center-fed IRA. The tail waveform of the offset IRA was smaller and simpler for the offset IRA because the multiple reflections are smaller.