Temperature controlled high power tuner
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United States of America Patent
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Aug 29, 2023
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N/A
app pub date -
Apr 15, 2020
filing date -
Apr 15, 2020
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Abstract
High power impedance tuners suffer from intense heating of the center conductor of the tuner airline (slabline), due to dissipated RF and DC power and, in addition to high electric field between the metallic tuning probe (slug) and the center conductor, also from associated thermal expansion causing sagging of the center conductor and possible electrical short. If the thermal expansion cannot be accommodated by structural means, the center conductor is cooled using forced air created by ventilators or re-circulating low loss dielectric liquid flowing through the slabline. Premature tuner aging through continuous airflow or cooling liquid circulation is avoided using real time monitoring of dissipated (heating) power and regulation of the cooling mechanism.
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