Coupling of Solid-State and Electromagnetic Equations for Simulation of Wireless Packaged Geometries

The balanced semiconductor solid-state equations as derived in [1] are efficiently coupled to Yee´s FDTD model for Maxwell´s electromagnetic equations. The resulting algorithm has capabilities of accurate and effective time-domain simulation of both passive and active devices, which can be used in wireless devices. A novel method that correlates the CFL requirements of the electromagnetic and the device simulator is presented and its application further enhances the numerical stability of the new numerical technique even for sub-micron devices. The discretization problems of a fully adaptive implementation are also discussed in detail.