Propagation Delay of Lines on Printed Boards by TDR
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چکیده
This method describes methods that utilize TDR measurements of multiple, unterminated test lines that are designed to differ only in length. A TDR signal, usually a step waveform1, is injected into a transmission line or lines and the reflection response is measured some time later. This method shows how tD is determined as the difference between the time it takes a TDR pulse to reflect from the unterminated ends of two transmission lines divided by the length difference of the two lines.
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