Patent ID: 9305750
Filing Date: 2016-04-05
CPC Classification: H01J,H05H

Claim Text:
1. A plasma processing system for generating plasma, the plasma processing system comprising: a first coil configured to conduct a first current for sustaining at least a first portion of the plasma; a second coil configured to conduct a second current for sustaining at least a second portion of the plasma; a power source configured to power the first current and the second current, the power source being electrically coupled with the first coil and the second coil; and a first parallel circuit configured to adjust an amperage of the first current, the first parallel circuit being electrically coupled between the power source and the first coil, the first parallel circuit including at least a first inductor and a first variable capacitor, the first inductor and the first variable capacitor being electrically connected in parallel to each other, so that a first node joins first terminal ends of the first variable capacitor and the first inductor and a second node joins second terminal ends of the first variable capacitor and the first inductor, the first node being directly connected to the first coil and the second node being connected to the power source and the second coil, wherein the first variable capacitor is configured to adjust the amperage of the first current.