Patent ID: 7480571

Claim:
A method of manufacturing a given radio frequency (RF) generator configured for use to at least generate a plasma in a plasma processing system, the method comprising: receiving a plurality of data points, said plurality of data points representing a first set of values of P G ⁢ ∂ Z T ∂ P G for a set of stable plasmas of interest and a given RF cable length associated with said plasma processing system, a term P G in said first set of values of P G ⁢ ∂ Z T ∂ P G representing output power of a first RF generator, a term ∂ Z T ∂ P G in said first set of values of P G ⁢ ∂ Z T ∂ P G representing derivative of a load impedance with respect to said output power of said first RF generator; obtaining a second set of values of P G ⁢ ∂ Z T ∂ P G , said second set of values of P G ⁢ ∂ Z T ∂ P G representing values of P G ⁢ ∂ Z T ∂ P G in a stable operating region of said given RF generator, a term P G in said second set of values of P G ⁢ ∂ Z T ∂ P G representing output power of said given RF generator, a term ∂ Z T ∂ P G in said second set of values of P G ⁢ ∂ Z T ∂ P G representing derivative of a load impedance with respect to said output power of said given RF generator; changing design parameters for said given RF generator to cause said second set of values of P G ⁢ ∂ Z T ∂ P G to substantially encompass said first set of values of P G ⁢ ∂ Z T ∂ P G ; and designing and manufacturing said given RF generator using said design parameters.