Process / pipelineNumerical electromagnetic analysis
Finite Integration Technique
The Finite Integration Technique (FIT) is a numerical method for solving Maxwell equations on structured grids, formulating electromagnetics as a system of integral equations over grid cells. Introduced by Thomas Weiland in 1977, FIT bridges finite differences and finite elements, offering excellent accuracy, stability, and computational efficiency for a wide range of electromagnetic problems. FIT is the foundation of commercial solvers like CST Microwave Studio and is widely used in RF, microwave, and EMC engineering.
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Sources
- Weiland, T. (1977). A new method for the solution of Maxwell's equations. Zeitschrift für Naturforschung, 31(7), 861-873. link ↗
- Clemens, M., & Weiland, T. (2001). Discrete electromagnetism with the finite integration technique. Progress in Electromagnetics Research, 32, 65-87. DOI: 10.2528/PIER00080105 ↗
- Weiland, T. (1996). Time domain electromagnetic field computation with finite difference methods. International Journal of Numerical Modelling, 9(4), 295-319. DOI: 10.1002/(SICI)1099-1204(199607)9:4<295::AID-JNM274>3.0.CO;2-8 ↗