Patent ID: 11972928
Assignee: COMET TECHNOLOGIES USA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. The method of claim 1, wherein:
switching the arc suppression device comprises switching a pi-network impedance transformer between the radio frequency generator and the plasma chamber achieving a reflection coefficient of the power of less than or equal to 0.5 and at least a 3 dB reduction in the power delivered to the plasma chamber;
wherein the pi-network impedance transformer comprises a phase shifting device electrically connected in series between the radio frequency generator and the plasma generator, a first shunt leg electrically connected between the impedance transformer and the radio frequency generator, and a second shunt leg electrically connected between the phase shifting device and the plasma chamber in parallel with the first shunt leg;
wherein the first shunt leg includes a first resistor, a first capacitor, and a first switching element;
wherein the second shunt leg includes a second resistor, a second capacitor, and a second switching element.