Patent ID: 7177781
Filing Date: 2007-02-13
Classification: H01J

Abstract:
1. A diagnostic system for plasma processing, said diagnostic system comprising: a multi-modal resonator; a power source, including a Gunn diode voltage controlled oscillator (VCO), coupled to said multi-modal resonator; a detector coupled to said multi-modal resonator; a controller coupled to said power source and said detector, wherein said controller provides at least one monitoring function and at least one controlling function, said at least one monitoring function including at least one of a Gunn diode voltage monitor, a Gunn diode current monitor, a varactor voltage monitor, an electron density monitor, and a detector voltage monitor, and said at least one controlling function including at least one of a varactor voltage control, a varactor voltage sweep control, a resonance lock-on control, and a graphical user control; and a programmable user interface connected to said controller, said programmable user interface selecting said at least one monitoring function and said at least one controlling function in the diagnostic system.