Changes

In EM.Picasso, the background structure is usually a layered planar structure layered substrate that consists of one or more laterally infinite material layers always stacked along the Z-axis. In other words, the dimensions of the layers are infinite along the X and Y axes. Your substrate can be a dielectric half-space, or a single conductor-backed dielectric layer (as in microstrip components or patch antennas), or simply the unbounded free space, or any arbitrary multilayer stack-up configuration. In the special case of a free space substrate, EM.Picasso behaves similar to [[EM.Libera]]'s Surface MoM simulator.  Metallic traces are placed at the boundaries between the substrate or superstrate layers. These are modeled by perfect electric conductor (PEC) traces or conductive sheet traces of finite thickness and finite conductivity. Some layers might be separated by infinite perfectly conducting ground planes. The two sides of a ground plane can be electromagnetically coupled through one or more slots (apertures). Such slots are modeled by magnetic surface currents. Furthermore, the metallic traces can be interconnected or connected to ground planes using embedded objects. Such objects can be used to model circuit vias, plated-through holes or dielectric inserts. These are modeled as volume polarization currents.

EM.Picasso assumes that your planar structure has a substrate (background structure) of infinite lateral extents. Your substrate can be a dielectric half-space, or a single conductor-backed dielectric layer (as in microstrip components or patch antennas)In addition, or simply the unbounded free space, or any arbitrary multilayer stackplanar 2.5-up configuration. In D assumption restricts the special case 3D objects of a free space substrate, EM.Picasso behaves similar your physical structure to [[EMembedded prismatic objects that can only support vertical currents.Libera]]'s Surface MoM simulator. It is important to keep in mind These assumptions limit the infinite extents variety and scope of the background substrate structureapplications of EM.Picasso. For example, you cannot use EM.Picasso to analyze a patch antenna with a finite-sized dielectric substrate, if . If the substrate edge effects are of concern in your modeling problem. , you must use [[EM.Tempo]] is recommended for instead.  On the modeling of finite-sized substrates. Since other hand, since EM.Picasso's Planar MoM simulation engine incorporates the Green's functions of the background structure into the analysis, only the finite-sized traces like microstrips and slots are discretized by the mesh generator. As a result, the size of EM.Picasso's computational problem is normally much smaller compared to the other techniques and solverthan that of [[EM.Tempo]]. In addition, EM.Picasso generates a hybrid rectangular-triangular mesh of your planar structure with a large number of equal-sized rectangular cells. This Taking full advantage of all the symmetry and invariance properties of dyadic Green's functions often results in very fast computation times that oftentimes easily make up for the limited applications of EM.Picasso's limited applications.