WIPL-D results and time domain response for an impulse radiating antenna (IRA)

WIPL-D was used to model and simulate an impulse radiating antenna (IRA) with a 46 cm diameter paraboloidal reflector and 45 degree feed arms. Model views are shown and the results of frequency domain simulation up to 20 GHz are plotted for the two cases of the IRA as transmitter and as receiver. The simulated frequency domain data is inverse Fourier transformed to obtain the time domain response to a Gaussian pulse input. The integral of the pulse input response gives the step response, which compares well with the theorized step input response of the IRA.