Tilted inverted triangular pulse antenna for impulse radio applications

Many modem communication systems utilize non-sinusoidal or impulse signals resulting in a growing demand for ultra-wideband antennas to meet recent technological needs. Impulse Radiating Antennas (IRA) are designed to either transmit or receive short pulses. This paper determines the far-field pattern and other properties for an ideal IRA. A systematic methodology is presented based on frequency domain analysis to study an IRA. The inverted trapezoidal pulse antenna is analyzed using this method. The tilted inverted triangular pulse antenna is introduced as a modified version of inverted trapezoidal pulse antenna. The measured and calculated results are presented for an inverted trapezoidal and a tilted inverted triangular pulse antenna. The input impedance frequency bandwidth is improved from 5.5 GHz for an inverted trapezoidal pulse antenna to 20 GHz for a tilted inverted triangular pulse antenna. The far-field pattern exhibits stability within a frequency bandwidth of 3.5 GHz for an inverted trapezoidal pulse antenna and 10 GHz for a tilted inverted triangular pulse antenna.