Peak power gain in time domain of impulse radiating antennas (IRAs)

Gain and beam width of antennas vary with frequency and are well defined in the frequency domain. Standardized definitions of these performance parameters do not yet exist in the time domain for pulsed antennas. In this note, we have attempted to define a peak power gain of a reflector type of an IRA along its optical axis. In doing so, well established expressions of the radiated far fields have been used. This peak power gain is valid at one instant of time, when the electric field on axis reaches its peak value in the far field.