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Neural Network Control of Variable-Frequency Microwave Processing of Polymer Dielectric Curing

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2 Author(s)
Davis, C.E. ; Johns Hopkins Univ., Laurel ; May, G.S.

Variable-frequency microwave (VFM) curing can perform the same processing steps as conventional thermal processing in minutes, without compromising intrinsic material properties. With increasing demand for novel dielectrics, there is a corresponding demand for new processing techniques that lead to comparable or better properties than conventional methods. VFM processing could be a viable alternative to conventional thermal techniques. However, current limitations include uncertain process characterization methods, a lack of reliable temperature measuring techniques, and limited control methodologies. This research focuses on the development of a neural network controller for curing low-k polymer dielectrics on silicon wafers in a VFM furnace. The neural network controller exhibits temperature set point control with percent error of 7% when compared with the target trajectory.

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Electronics Packaging Manufacturing, IEEE Transactions on  (Volume:31 ,  Issue: 2 )