RF BUS AND RF RETURN BUS FOR PLASMA CHAMBER ELECTRODE

摘要

For coupling RF power from an RF input (40) of a plasma chamber to the interior (11) of a plasma chamber, an RF bus conductor (43, 44) is connected between the RF input and a plasma chamber electrode (20-26). In one embodiment, an RF return bus conductor (53, 54) is connected to an electrically grounded wall (14-18) of the chamber, and the RF bus conductor and the RF return bus conductor have respective surfaces that are parallel and face each other. In another embodiment, the RF bus conductor has a transverse cross section having a longest dimension oriented perpendicular to the surface of the plasma chamber electrode that is closest to the RF bus conductor.