UltraWideband wireless channel in presence of atmospheric gases and refined engine oil

Abstract

In this study we propose using Ultra Wideband Channel measurements to detect the presence of different substances between the antennas. This technique takes advantage of the large number of frequencies which an Ultra Wideband signal occupies. We propose two methods to detect differences in channel magnitude frequency responses when in the presence of different substances between the transmitting and receiving UWB antennas. We then take preliminary measurements and fit a curve of best fit to the processed data. The preliminary results indicate that this technique may be able to be used in conjunction with data mining techniques to detect the presence of different substances between the antennas. This potentially provides a non-destructive technique to measure different substances in the wireless medium between the two UWB antennas.

Measurement of ultra wideband channel coefficient through carbon dioxide in a multipath environment

“…Previous studies have shown that gases, solids, and liquids affect the electromagnetic wireless channel coefficients measured at individual frequencies . Vector Network Analyzers (VNA) is used with antennas to measure the individual complex wireless channel coefficients at a range of frequencies.…”

Ultra wideband channel coefficient measurements for detecting methane gas in a multipath environment

“…Previous studies have shown that gases, solids and liquids affect the electromagnetic wireless channel coefficients measured at individual frequencies (Alshabo et al, 2012;Baghdady and Ely, 1966;Boan, 2007;Selmic et al, 2010;Shimomura et al, 2012;Wee et al, 2009;Yin-Chung and Porter, 1978;Micheli et al, 2015). Vector Network Analyzers (VNA) are used with antennas to measure a range of complex wireless channel coefficients at many different frequencies.…”