Energy-based Input Reflection Coefficient for the Characterization of Ultra-Wide Band Antennas

This paper defines an energy-based pulse reflection coefficient and a corresponding pulse matching ratio for the characterization of ultra-wide band antennas. As opposed to the usual frequency-domain reflection coefficient or VSWR, the proposed descriptors provide a relevant view on the amount of energy that is sent back to the transmitter. In order to evaluate the pulse reflection coefficient time-domain reflected voltage or time-domain reflection coefficient must be known. The definition of the pulse reflection coefficient is consistent with other definitions of energy-based time-domain descriptors such as the intercorrelation coefficient and the energy gain.