Patent ID: 9337000
Filing Date: 2016-05-10
CPC Classification: H01J

Claim Text:
1. A system comprising: a matchbox including a match circuitry; a radio frequency (RF) generator coupled to the matchbox to supply an RF supply signal to the matchbox via a first portion of an RF supply path, the RF generator coupled to the matchbox to receive an RF return signal via a first portion of an RF return path; a switch circuit; a plasma reactor having a first electrode, wherein the first electrode is connected to the switch circuit via a second portion of the RF return path, wherein the plasma reactor includes a second electrode coupled to the match circuitry via a second portion of the RF supply path, wherein the second portion of the RF return path is defined by an RF tunnel that connects to the switch circuit, and the second portion of the RF return path and the second portion of the RF supply path are defined by an RF transmission line; and a controller coupled to the switch circuit, the controller configured to control the switch circuit coupled to the RF tunnel based on a tune recipe to change an impedance of the RF return path.