Verification of a mutual inductance calculation between two helical coils

This paper deals about verification process of calculation of a mutual inductance between two helical coils. Nowadays, there are many procedures how to compute mutual inductance between two coils. The main approach of proposed paper is exact specification of the formula, which may be used for the determination of the mutual inductance. First the overview of mathematical derivation is described, and final formula for computation is being determined. Based on this formula, mutual inductance for two physical helical coils for wireless energy transfer is defined. The confirmation of validity of proposed formula is consequently verified with measurement.