One of its key strengths is the combination of higher order discretization elements with an iterative or direct solver. Now the I-solver shows numerically an efficient complexity in operations and memory for electrically large structures. The coupling information is fed back through the hierarchy levels to the individual elements (disaggregation). In this way a multi-level hierarchy is built-up. On the next level the coupling between blocks is considered. Inside each block only the coupling to one point is considered, representing the coupling effect of the elements grouped together (aggregation). In MLFMM the domain is first subdivided into separate blocks. This figure shows that MoM considers the direct coupling between all elements of a mesh. This problem is solved by applying the multi-level fast multipole method (MLFMM), as described in Figure 1. Nevertheless, the numerical complexity of MoM is high and is not applicable to electrically large structures. Due to the surface integral formulation the new solver uses far fewer elements than common volume methods for the described problem classes. The I-solver features a Method of Moments (MoM) discretization using a surface integral formulation of the electric and magnetic field integral equations. The selection of the right solver is then just a mouse-click away. Engineers can take advantage of this easy to use interface and the sophisticated imports from a large variety of CAD formats to set up the models.
The I-solver is seamlessly integrated in the CST DESIGN ENVIRONMENT™ (CST DE). It enables the user to perform accurate 3D full-wave analysis of electrically large structures, which is particularly useful in military microwave applications. CST has addressed these problem classes with the introduction of the Integral Equation solver (I-solver) for its CST MICROWAVE STUDIO® (CST MWS). Tackling these problems is quite simply not feasible using standard volume discretization methods.
#SCATTERED FIELDS CST MICROWAVE STUDIO FREE#
What both of these application areas have in common is the size of the electrical problem, which can typically run to many hundreds of wavelengths, and that the relevant structures are mainly surfaces and free space.
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