3D Field simulation of sparse arrays using various solver techniques within CST MICROWAVE STUDIO®

The design process of a sparse array can be a challenging task for a 3D EM simulator due to the complexity of the problem. Usually a 3D EM field simulator applies a single solver method like FDTD, FEM or MoM to all problem types. Whereas the analysis and optimization of single antenna elements and its next neighbors might be well suited to a particular solver method, the same method might not be appropriate for the simulation of a complete array with a large number of sparsely placed elements. The implementation of several solvers methods in a single program will give the design engineer the flexibility to choose the most appropriate solver for a particular problem type. This paper will give an overview of the different volume and surface mesh based solver methods in CST MICROWAVE STUDIOreg (CST MWS). The strengths and weaknesses of the different solvers methods will be discussed using the construction process of a sparse array from the optimization of a single radiation element to the simulation of the complete array as a design example