Hybrid harmonic impedance tuner
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United States of America Patent
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Jan 8, 2019
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N/A
app pub date -
Jun 21, 2017
filing date -
Jun 21, 2017
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Abstract
A hybrid harmonic slide screw tuner uses the forward injection technique, also called Gamma Boosting Unit (GBU) cascaded with two independent tuning probes in the same slabline and housing. The wave-probes used in the GBU sample a portion of the forward travelling signal, adjusts its phase, amplifies it, adjusts its amplitude (attenuation) and couples it back, in reverse direction into the main signal path. In the present active tuner technique as is herein implemented, the passive tuners and the signal couplers are mounted on the same double carriages which move each carriage horizontally and the wave- and tuning probes vertically, independently. Appropriate calibration and tuning algorithms ensure independent hybrid (active and passive) harmonic tuning.
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