A Method for Calculating Electric And Magnetic Fields in TEM Cells at ELF

Abstract
A method is presented whereby the electric and magnetic field distributions within rectangular-strip transmission lines (TEM cells) can be calculated. Quasi-static approximations are employed, thereby restricting the validity of the results to operational frequencies well below the cell cutoff frequency. The method is illustrated by calculating the fields within an existing structure used in biological experimentation. Where possible, calculations are compared with measured data.