Method for transmission line analysis
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United States of America Patent
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Apr 23, 2013
Grant Date -
Apr 21, 2011
app pub date -
Apr 23, 2008
filing date -
Apr 23, 2008
priority date (Note) -
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Abstract
The present invention concerns methods for estimating one or more transmission properties of a telecommunications transmission line. Estimates of the line input impedance, Zin at a frequency ƒ, and the line capacitance Ĉ are made. An estimate is then made in dependence of Ĉ, the frequency ƒ and a value Γ, where Γ satisfies the relationship Γ coth (Γ)=Zin·jωĈ, and ω=2πƒ. Accuracy may be improved by least squares fitting a curve to a set of intermediate values and then generating an estimate from the coefficients of the curve.
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