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<title>Mismatched transmission lines (Standing Wave)</title>
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<p>
This is a simple circuit showing two mismatched
<a href="http://en.wikipedia.org/wiki/Transmission_line">transmission
lines</a>. The first line is 75 ohms, and the second line is 500 ohms. Waves
traveling down the first line are reflected at the boundary, causing a
<a href="http://en.wikipedia.org/wiki/Standing_wave">standing
wave</a> on the line, which is a wave that oscillates but does not appear to
travel. It is actually the combination of two waves (the initial wave,
and the reflected wave) traveling in opposite directions.
<p>
The second line is properly terminated, so there are no reflections on that one.
<p>
Next: <a href="e-tlmatch1.html">Impedance Matching (L-Section)</a><p>
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