Modeling linear lumped loads in the FDTD method using piecewise linear recursive convolution method

The paper gives a new algorithm to include linear lumped elements in the finite difference time domain (FDTD) algorithm. The proposed method can efficiently account for two-terminal networks made of several lumped elements. The piecewise linear recursive convolution (PLRC) technique is used to implement lumped loads in a Yee cell. Using this method, it is possible to simulate equivalent circuits of terminations for microstrip structures, ICs or digital devices. The advantage of the PLRC technique is addressed and simulation results validating this method are presented.