Publications Details

Potential-based TDIEs for dielectric regions using magnetic currents

Roth, Thomas E.; Chew, Weng C.

A new potential-based TDIE formulation for dielectric regions is proposed that directly uses magnetic current densities as unknowns. This new formulation avoids the use of inconvenient integral operators that complicate the discretization, while also providing simpler computation of far-field results due to direct access to the magnetic current density. Appropriate marching-on-in-time discretization schemes are discussed so that stable results can be achieved at middle frequencies. Overall, this results in the improved performance of these new equations compared to previous formulations. The accuracy and stability of this new formulation is demonstrated through numerical results.