An ultrawideband antenna for FMCW-radar positioning systems

The imminent widespread commercial deployment of ultra-wideband (UWB) systems has sparked renewed interest in the subject of ultra-wideband antennas. A field where UWB systems are required is local positioning. These solutions, based on Frequency Modulated Continuous Wave (FMCW) radar principle require a broadband RF system to allow the radar to sweep the entire frequency ramp. For these purposes, low-cost, compact and robust UWB antennas are needed. This document describes a novel planar UWB antenna of the type “Monopole-Over-Ground”, that delivers good performance in the large frequency range of interest, low cost, small dimensions and robustness.