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Design and Performance Evaluation of a Time Domain Microwave Imaging System

Xuezhi Zeng (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Andreas Fhager (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Peter Linnér (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; Mikael Persson (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Herbert Zirath (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik)
International Journal of Microwave Science and Technology (1687-5826). Vol. 2013 (2013), p. Art. no. 735692.
[Artikel, refereegranskad vetenskaplig]

We design a time domain microwave system dedicated to medical imaging. The measurement accuracy of the system, that is, signal-to-noise ratio, due to voltage noise and timing noise, is evaluated. Particularly, the effect of coupling media on the measurement accuracy is investigated both numerically and experimentally. The results suggest that the use of suitable coupling media betters the measurement accuracy in the frequency range of interest. A signal-to-noise ratio higher than 30 dB is achievable in the range of 500 MHz to 3 GHz when the effective sampling rate is 50 Gsa/s. It is also indicated that the effect of the timing jitter on the strongest received signal is comparable to that of the voltage noise.



Denna post skapades 2013-10-31. Senast ändrad 2015-08-10.
CPL Pubid: 185962

 

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