Research On The Modeling And Simulation Of The Stacked Antenna

In our subject, we will employ the Method of Moments (MoM), which is a spectral-domain method and widely used for its accuracy and stability, to model and simulate the stacked antenna. When applying the MoM to the stacked antenna structure, the first problem should be the calculation the spatial-domain multi-layered Green's function. There have been many algorithms that developed for this problem, e.g. the Discrete Complex Image Method (DCIM), the Fast Hankel Transform method (FHT), the Steepest Descent Method (SDP) etc. Here in our subject we develop more than one method for the calculation of the Green's function and cross-checking.In the stacked antennas, there exist fine feed lines and vias, after meshing, the obtained elements will be unbalanced in size, which will results in the near-singularity of the moment matrix, and this will cause difficulty in the matrix solving by iteration method, e.g. more iteration steps or even divergence in the iteration process. Here we use an idea of local loop-tree to treat this problem. Though the problem wasn't solved perfectly by this idea, some useful numerical result will be presented here.