Victim receiver response to ultrawideband signals

A class of time-dithered ultrawideband (UWB) systems is modeled and simulated from an analytic description of the system. These simulated time waveforms and Fourier spectra results are analyzed to show the effect of a receiver´s intermediate frequency (IF) bandwidth (BW) on peak and average power. The peak and average power curves provide the basis for establishing a normalized bandwidth correction factor (BWCF) curve and equation. The BWCF is used to estimate peak power over a range of BWs from average power measurements made in a 1 MHz BW. Peak and average power are computed and compared over BWs from 0.3 MHz to 100 MHz for both pre and post detection. The 50% dithered case is also compared to a non-dithered periodic system which exhibited constant power curves as a function of IF BW below the pulse repetition rate (PRR) of 10 MHz. All of the curves increased linearly in power with, BW on log-log plots. Peak power increased more rap idly than average power above the PRR for all cases.