A demultiplexing unit for separating incident and reflected nano- and picosecond pulse signals

Abstract

A device on the basis of a double directional bridge for separating ultrawideband pulse signals that are incident on and reflected from an arbitrary load is described. The experimental results from studies of the device using picosecond (40 ps) and nanosecond (10 ns) electrical pulses are presented. A test pulse that feeds the input port comes to a device under test (DUT) with an attenuation of 5 dB. The device separates the resulting incident and reflected pulses that arrive at different ports. The isolation between the ports of the incident and reflected pulses is at least 20 dB in the operating-frequency range from 300 kHz to 16 GHz.