Experimental Investigation of the Accuracy of an Ultrawideband Time-Domain Microwave-Tomographic System
Journal article, 2011

The measurement accuracy of an ultrawideband (UWB) time-domain microwave-tomographic system is investigated. In order to make an assessment of the random variation of the measurements, the measurement repeatability of the system is evaluated by comparison with an UWB frequency-domain system. A phantom is imaged with the time-domain microwave-tomographic system, and the reconstructed images are compared with those obtained by using the frequency-domain system. The results suggest that with the averaging tens of measurements, the time-domain system can achieve the same level of measurement repeatability as that of the frequency-domain system in the interesting frequency range of microwave tomography. The imaging results, however, indicate that the phantom reconstruction does not require such high measurement accuracy. The permittivity profile of the phantom reconstructed from the nonaveraging time-domain measurements is very similar with that obtained by means of the frequency-domain system.

oscilloscopes

Measurement errors

random noise

time-domain measurements

microwave imaging

microwave measurements

Author

Xuezhi Zeng

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Biomedical Electromagnetics

Andreas Fhager

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Biomedical Electromagnetics

Peter Linner

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Mikael Persson

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Biomedical Electromagnetics

Herbert Zirath

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

IEEE Transactions on Instrumentation and Measurement

0018-9456 (ISSN)

Vol. 60 12 3939-3949

Areas of Advance

Life Science Engineering (2010-2018)

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TIM.2011.2141250

More information

Created

10/7/2017