Patent ID: 11961711
Assignee: COMET TECHNOLOGIES USA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A method of providing diagnostics in a radio frequency plasma processing system, the method comprising:
providing a diagnostic radio frequency signal comprising a plurality of frequencies to a matching network of the radio frequency plasma processing system;
measuring a voltage, a current, and a phase of the diagnostic radio frequency signal as the diagnostic radio frequency signal propagates through the matching network as a function of a plurality of variable capacitors of the matching network;
blocking a processing radio frequency between a matching network circuit core and a source that is providing the diagnostic radio frequency signal;
blocking the diagnostic radio frequency signal at an input and an output of the matching network;
obtaining a plurality of resonance conditions from the diagnostic radio frequency signal;
collecting at least one of a typical reference for the voltage, the current and the phase, and a statistic of the voltage, the current, and the phase;
comparing the voltage, the current, and the phase to at least one of the typical reference for the voltage, the current, and the phase, and the statistic of the voltage, the current and the phase; and
generating a least one of an alert and an intervention command based on the comparing the voltage, the current, and the phase to at least one of the typical reference for the voltage, the current, and the phase, and the statistic of the voltage, the current and the phase.