Patent ID: 9245720
Filing Date: 2016-01-26
CPC Classification: G01R,H01J

Claim Text:
1. A plasma processing system having a plasma processing chamber, including a lower electrode assembly, comprising: a plurality of RF straps to permit RF currents to traverse said plurality of RF straps; a plurality of sensors, each of said plurality of sensors being coupled with one of said plurality of straps, and each of said plurality of sensors has a first end and a second end separated by a gap to provide coupling with said one of said plurality of straps, wherein each sensor represents a non-linear substantially enclosed RF sensor; wherein said non-linear substantially enclosed RF sensor is coupled to a co-axial cable, a sheath of said co-axial cable is coupled to a first portion of said non-linear substantially enclosed RF sensor and a core of said co-axial cable is coupled to a second portion of said non-linear substantially enclosed RF sensor to acquire voltage measurements between said first portion and said second portion.