This article presents a potentially low cost low sampling noise reader for the UWB chipless RFID technology. The reader has been designed around the time equivalent approach to reduce its realization cost. A significant effort has been spent for the optimization of the schematic and of the layout to obtain a system with a very low sampling noise. This latest aspect is very important in order to realize a reader for the UWB RFID chipless technology. It has been demonstrated how, with an accurate design, is possible to realize a low cost equivalent time acquisition system with performance comparable with a high cost real time acquisition system. It has been possible to acquire, with a discrete precision, an UWB impulse with a pulse width of only 70 ps.