A solenoidal basis method for efficient inductance extraction
Proceedings of the 39th annual Design Automation Conference
FastMag: a 3-D magnetostatic inductance extraction program for structures with permeable materials
Proceedings of the 2002 IEEE/ACM international conference on Computer-aided design
Design considerations for MRAM
IBM Journal of Research and Development - Spintronics
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
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The existence of nonlinear magnetic materials poses a challenge to the interconnect inductance extraction for circuits in micromotors, radio-frequency identification, and magnetoresistive random access memory. In this paper, we present a fast algorithm to extract inductance in the presence of nonlinear magnetic materials. The new algorithm models the nonlinearmagnetic characteristics by solving the Landau-Lifshitz-Gilbert equation, and the nonhomogeneous magnetic characteristics by introducing a fictitious magnetic charge. To speed up the algorithm, we apply a number of innovative techniques, including the approximation of magnetic charge effect and the modeling of currents with solenoidal basis. Experimental results demonstrate the accuracy and efficiency of the new algorithm. Its relative error with respect to the commercial tool is below 3%, while its speed is up to one magnitude faster.