Originally posted by crackahcrackah
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Standing Wave."
The so called "hairpin" is a length of parallel conductor
transmission line which is shorted at the end opposite
the input end.
At resonant frequencies stationary nodes will position
themselves at appropriate fractional wavelength
distances along the length of the line.
The Maximum Voltage node corresponds to the High
Impedance point (minimum current flow.)
The Minimum Voltage node corresponds to the Low
Impedance point (maximum current flow.)
It is able to function as an Impedance Transformer
and is actually used as an Impedance Matching device.
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