Ultra-Wideband Data Acquisition Circuit Based on Nonperiodic Equivalent Sampling

A new equivalent sampling circuit for nonperiodic UWB signal is presented in this paper. In order to sampling the UWB narrow pulse effectively, the sampling speed must be very high according to the Nyquist law, the equivalent sampling method is a valid solution in a simple way. However, the condition for the traditional equivalent sampling is that the signals to be measured are periodic or duplicate, so it´s necessary to improve the equivalent sampling method to adapt to the nonperiodic UWB pulses train after PPM, which changed the intervals of pulses according to PN code. Experimental results of this implementing circuit are provided to demonstrate the effectiveness and feasibility of the proposed method