Time response of a parabolic reflector antenna to a generalized gaussian pulse

Time domain computation combined with the Skulkin and Turchin approach appears to be efficient and informative to study the behaviour of a reflector antenna fed with pulses. The knowledge of the impulse response allows to calculate the response of the antenna to any input signal like a generalized gaussian pulse meaningful of ultra wide band signals. As the classical radiation pattern or gain concepts are not relevant in the time domain, the surface energy density diagram may be helpful to understand the way the antenna operates. Such a method could be extended to other kinds of antennas like multi-reflector antennas.