Capability of Impedance Measurement Using Spread Spectrum Time-Domain Reflectometry

被引：0
|
作者：
Benoit E. [1 ]
Hansen S.J. [2 ]
Kingston S.R. [3 ]
Harley J.B. [4 ]
Furse C.M. [2 ]
机构：
[1] University of Utah, Department of Electrical and Computer Engineering, Asia Campus, Yeonsu-Gu, Incheon
[2] University of Utah, Department of Electrical and Computer Engineering, Salt Lake City, 84112, UT
[3] LiveWire Innovation, Camarillo, 93012, CA
[4] University of Florida, Department of Electrical and Computer Engineering, Gainesville, 32611, FL
来源：
IEEE Transactions on Instrumentation and Measurement | 2023年 / 72卷
关键词：
Impedance measurement; reflection coefficient measurement; reflectometry; spread spectrum time-domain reflectometry (SSTDR); vector network analyzer (VNA);
D O I：
10.1109/TIM.2023.3318677
中图分类号：
学科分类号：
摘要：
Spread spectrum time-domain reflectometry (SSTDR) has been proposed for measuring electrical impedance on live, energized systems, in electrically noisy environments, or for measuring multiple channels simultaneously. We evaluate the capability of SSTDR for impedance measurement from near dc to 96 MHz and find that they agree very well with measurements from a vector network analyzer (VNA). Time gating is used to remove (calibrate out) transmission line effects. We evaluate the frequency ranges over which SSTDR at different modulation frequencies is accurate for the measurement of series resistive-capacitive (RC) loads and observe that fusing measurements from multiple modulation frequencies can broaden the effective measurement bandwidth. © 1963-2012 IEEE.
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