Two-Stage Design of High Power UWB Monocycle Generator for Radar Sensor Applied in The Fourth Industry Revolution

摘要

This paper presents a high power monocycle generator for Radar Sensor detection in IoT application. The generator was made up of three essential parts-circuits, an avalanche transistor, an Step Recovery Diode (SRD) pulse sharping and an Monocycle Forming Network (MFN). The main idea in this work is to generate a high power monocycle pulse with a minimum of ringing in the output waveform. To overcome this challenge, a useful technique consists of introducing a twice stage of the transistor after the triggering with an overvoltage. The measurement results give an output waveform of 2.3 volts in amplitude with a minimum ringing around 3.6% in overshoot at 1 MHz, which is nearly fourfold of the peak power produced by a single transistor. The generator circuit is completely fabricated using microstrip structure technology characteristics. Good agreements between the measured and theoretical results are achieved which can consider very attractive in many application fields.