Accuracy Evaluation of Ultrawideband Time Domain Systems for Microwave Imaging
Artikel i vetenskaplig tidskrift, 2011

We perform a theoretical analysis of the measurement accuracy of ultrawideband time domain systems. The theory is tested on a specific ultrawideband system and the analytical estimates of measurement uncertainty are in good agreements with those obtained by means of simulations. The influence of the antennas and propagation effects on the measurement accuracy of time domain near field microwave imaging systems is discussed. As an interesting application, the required measurement accuracy for a breast cancer detection system is estimated by studying the effect of noise on the image reconstructions. The results suggest that the effects of measurement errors on the reconstructed images are small when the amplitude uncertainty and phase uncertainty of measured data are less than 1.5 dB and 15 degrees, respectively.

random noise

microwave imaging

measurement errors

time domain measurements

Biomedical imaging

Författare

Xuezhi Zeng

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

Andreas Fhager

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

Mikael Persson

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

Peter Linner

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Herbert Zirath

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. 59 4279-4285 5979152

Styrkeområden

Livsvetenskaper och teknik

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/TAP.2011.2164174