Generality Verification of Equivalent Dipole Sources in Semi-Open Shielded Cavities

This paper proposes an equivalent dipole source modeling methodology for semi-open shielded cavities based on the Dynamic Differential Evolution (DDE) algorithm. Through comprehensive full-wave simulations and experimental validation, we quantify the relative error of predicted coupling voltage, under dynamic geometric variations of semi-open shielded cavities. The results demonstrate that within the cavity's dimensional variation ranges of the x-axis (-6 ∼ 12 mm), y-axis (-12 ∼ 24 mm), and z-axis (0 ∼ 10 mm), the equivalent dipole model maintains an average error below 4 dB in coupling voltage prediction, compared with reference values. This experimental evidence conclusively validates the generality of the proposed equivalent dipole source for semi-open shielded cavities with dynamic geometric parameter variations.