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Proceedings Paper

Evaluation of the load impedance in coaxial cable via time-frequency domain reflectometry
Author(s): YongJune Shin; Edward J. Powers; TokSon Choe; Seunghoon Sung; JongGwan Yook; JinBae Park
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Paper Abstract

A new impedance measurement methodology based on time-frequency domain reflectometry (TFDR) is proposed. For the evaluation of the reflection coefficient in time-frequency domain reflectometry, the distortion of the reflected wave by the frequency-dependent attenuation is compensated which otherwise results in inaccurate impedance measurement. Also, the phase difference between the incident and reflected waveforms caused by the state of the load impedance is evaluated by the cross time-frequency distribution which provides time-frequency localized phase difference information. The proposed methodology is verified by a set of numerical electromagnectic simulation experiments and the results are compared with classical time domain reflectometry (TDR). Impedance measurement via time-frequency domain reflectometry is more accurate over a wider range of impedances than TDR.

Paper Details

Date Published: 24 December 2003
PDF: 9 pages
Proc. SPIE 5205, Advanced Signal Processing Algorithms, Architectures, and Implementations XIII, (24 December 2003); doi: 10.1117/12.505379
Show Author Affiliations
YongJune Shin, Univ. of Texas at Austin (United States)
Edward J. Powers, Univ. of Texas at Austin (United States)
TokSon Choe, Yonsei Univ. (South Korea)
Seunghoon Sung, Yonsei Univ. (South Korea)
JongGwan Yook, Yonsei Univ. (South Korea)
JinBae Park, Yonsei Univ. (South Korea)

Published in SPIE Proceedings Vol. 5205:
Advanced Signal Processing Algorithms, Architectures, and Implementations XIII
Franklin T. Luk, Editor(s)

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