SYSTEMS AND METHODS FOR PROVIDING SHUNT CANCELLATION OF PARASITIC COMPONENTS IN A PLASMA REACTOR
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United States of America Patent
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Dec 16, 2016
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Dec 16, 2016
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Abstract
Systems and methods for negating an impedance associated with parasitic capacitance are described. One of the systems includes a plasma chamber having a housing. The housing includes a pedestal, a showerhead situated above the pedestal to face the pedestal, and a ceiling located above the showerhead. The system further includes a radio frequency (RF) transmission line coupled to the plasma chamber for transferring a modified RF signal to the showerhead. The system includes a shunt circuit coupled within a pre-determined distance from the ceiling. The shunt circuit is coupled to the RF transmission line for negating the impedance associated with the parasitic capacitance within the housing.
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