High power slide screw tuners
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United States of America Patent
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May 30, 2017
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N/A
app pub date -
Oct 30, 2015
filing date -
Oct 30, 2015
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Abstract
Impedance tuners used in high power measurements suffer fast heating and consequently thermal expansion of the center conductor, which has a very small mass and is thermally isolated from the environment and tuner housing. This leads to false measurements or catastrophic tuner failure (short) of either the DUT or the tuner. Modified center conductors are made of two pieces and comprise a flexible joint between them that allows longitudinal center conductor expansion and contraction, thus preserving tuner accuracy and safety. Practical tests have shown significant improvement in thermal behavior.
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