Inductive plasma processor including current sensor for plasma excitation coil

An inductive plasma processor includes an RF plasma excitation coil having plural windings, each having a first end connected in parallel to be driven by a single RF source via a single matching network. Second ends of the windings are connected to ground by termination capacitors, in turn connected...

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Bibliographic Details
Main Authors CHEN, JIAN J, WICKER, THOMAS E, VELTROP, ROBERT G
Format Patent
LanguageEnglish
Published 21.05.2006
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PLASMA TECHNIQUE
PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS
PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS
SEMICONDUCTOR DEVICES
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Summary:An inductive plasma processor includes an RF plasma excitation coil having plural windings, each having a first end connected in parallel to be driven by a single RF source via a single matching network. Second ends of the windings are connected to ground by termination capacitors, in turn connected by a lead to ground. A current sensor including a winding around a toroidal core is coupled to the lead between each termination capacitor and ground. The current sensor is surrounded by a grounded shield. There is minimum electromagnetic interference from an ambient RF environment to the current sensor, to provide an accurate current sensor.
Bibliography:Application Number: TW200291106376