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Capability of Impedance Measurement Using Spread Spectrum Time-Domain Reflectometry

Journal Article · · IEEE Transactions on Instrumentation and Measurement

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. Here 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.

Research Organization:
Univ. of Utah, Salt Lake City, UT (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
Grant/Contract Number:
EE0008169
OSTI ID:
2234336
Journal Information:
IEEE Transactions on Instrumentation and Measurement, Journal Name: IEEE Transactions on Instrumentation and Measurement Vol. 72; ISSN 0018-9456
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

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