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Microstrip Line Characteristic Impedance and TDR
August 11, 2010 |Estimated reading time: Less than a minute
The characteristic impedance of a microstrip line is a complex function of frequency. Impedance changes are usually measured with time domain reflectometry (TDR), but does the observed impedance value depend upon rise time? What impedance value is actually visible in TDR of a line segment?
Yuriy Shlepnev investigates several approaches in this app note.