Paulter, N.
, Palm, R.
, Hefner Jr., A.
and Berning, D.
(2003),
Low-Impedance Time-Domain Reflectometry for Measuring the Impedance Characteristics of Low-Impedance Transmission Lines, Review of Scientific Instruments, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=31324
(Accessed October 9, 2025)
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Low-Impedance Time-Domain Reflectometry for Measuring the Impedance Characteristics of Low-Impedance Transmission Lines
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Abstract
An experimental examination of a 10 Ω}; and a 2 Ω}; time-domain reflectometer (TDR) for measuring low-impedance transmission line characteristics is presented. TDR measurements using these systems are compared to those using a 50 Ω}; TDR system. The results show that the uncertainties in the characteristic impedance, ZC, of a low-ZC transmission line are a significant fraction of ZC for 50 Ω}; TDR measurements whereas the fractional uncertainties are much less when using a low-impedance TDR. The fractional ZC uncertainties for the 50 Ω}; TDR increases as ZC decreases.Citation
Review of Scientific Instruments
Volume
74
Issue
12
Pub Type
Journals
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Keywords
characteristic impedance, high frequency, high peed, impedance discontinuity, low impedance, time-domain reflectometry, transmission line
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Created November 30, 2003, Updated October 12, 2021