Performance improvement of stepped frequency UWB sensor for frequency interference

Abstract

UWB sensor has recently attracted considerable attention for various consumer applications such as home security and vital-sign monitoring because it has anti-fading capability and the high range resolution. However, the commercialization causes a serious shortage of frequency resources in the RF spectrum. This paper suggests a stepped frequency UWB sensor which can coexist with other narrowband radio systems. The signal-processing algorithm is also presented to improve the signal degradation due to the spectrum hole. We fabricated the sensor system in order to investigate the usefulness and conducted the measurement for several scenarios.