[[Image:Splash-planar new.jpg|right|800px]]
<strong><font color="#048092016978" size="4">A Very Fast Full-Wave Simulator For Modeling Multilayer Planar Structures</font></strong>
==Product Overview==
=== EM.Picasso in a Nutshell ===
[[Image:PMOM14.png|thumb|400px|A typical planar layered structure]]
EM.Picasso<sup>®</sup> is a versatile planar structure simulator for modeling and design of printed antennas, planar microwave circuits, and layered periodic structures. EM.Picasso's simulation engine is based on a 2.5-D full-wave Method of Moments (MoM) formulation that provides the ultimate modeling accuracy and computational speed for open-boundary multilayer structures. It can handle planar structures with arbitrary numbers of metal layouts, slot traces, vertical interconnects and lumped elements interspersed among different substrate layers.
[[Image:Info_icon.png|40px]] Click here to learn more about the basic functionality of '''[[CubeCAD]]'''.
== EM.Picasso Features at a Glance ==
=== Structure Definition ===
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Multilayer stack-up with unlimited number of substrate layers and trace planes</li>
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PEC and conductive sheet traces for modeling ideal and non-ideal metallic layouts</li>
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PMC traces for modeling slot layouts</li>
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Vertical metal interconnects and embedded dielectric objects</li>
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Full periodic structure capability with inter-connected unit cells</li>
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Periodicity offset parameters to model triangular, hexagonal or other offset periodic lattice topologies</li>
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<div class="imag_contain" style="width: 360px;">
<img alt="" src="/files/images/PMOM_A.png" style="width: 360px;" />Planar mesh of a slot-coupled patch array with a corporate feed.</div>
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=== Sources, Loads & Ports ===
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Gap sources on lines</li>
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De-embedded sources on lines for S parameter calculations</li>
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Probe (coaxial feed) sources on vias</li>
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Gap arrays with amplitude distribution and phase progression</li>
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Periodic gaps with beam scanning</li>
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Multi-port and coupled port definitions</li>
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RLC lumped elements on strips with series-parallel combinations</li>
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Short dipole sources</li>
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Import previously generated wire mesh solution as collection of short dipoles</li>
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Plane wave excitation with linear and circular polarizations</li>
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Multi-ray excitation capability (ray data imported from [[Propagation Module]] or external files)</li>
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Huygens sources imported from other [[EM.Cube]] modules</li>
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=== Mesh Generation ===
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Optimized hybrid mesh with rectangular and triangular cells</li>
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Regular triangular surface mesh</li>
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Local meshing of trace groups</li>
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Local mesh editing of planar polymesh objects</li>
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Fast mesh generation of array objects</li>
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=== Planar MoM Simulation ===
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2.5-D mixed potential integral equation (MPIE) formulation of planar layered structures</li>
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2.5-D spectral domain integral equation formulation of periodic layered structures</li>
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Accurate scattering parameter extraction and de-embedding using Prony's method</li>
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Plane wave excitation with arbitrary angles of incidence</li>
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A variety of matrix solvers including LU, BiCG and GMRES</li>
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Uniform and fast adaptive frequency sweep</li>
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Parametric sweep with variable object properties or source parameters</li>
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Generation of reflection and transmission coefficient macromodels</li>
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Multi-variable and multi-goal optimization of structure</li>
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Remote simulation capability</li>
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Both Windows and Linux versions of Planar MoM simulation engine available</li>
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=== Data Generation & Visualization ===
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Current distribution intensity plots</li>
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Near field intensity plots (vectorial - amplitude & phase)</li>
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Far field radiation patterns: 3D pattern visualization and 2D Cartesian and polar graphs</li>
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Far field characteristics such as directivity, beam width, axial ratio, side lobe levels and null parameters, etc.</li>
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Radiation pattern of an arbitrary array configuration of the planar structure or periodic unit cell</li>
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Reflection and Transmission Coefficients of Periodic Structures</li>
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Monostatic and bi-static RCS </li>
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Port characteristics: S/Y/Z parameters, VSWR and Smith chart</li>
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Touchstone-style S parameter text files for direct export to RF.Spice or its Device Editor</li>
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Huygens surface generation</li>
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Custom output parameters defined as mathematical expressions of standard outputs</li>
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== A Planar MoM Simulation Primer ==
=== An Overview of Planar Method of Moments ===
[[Image:PMOM14.png|thumb|400px|A typical planar layered structure]]
The Method of Moments (MoM) is a rigorous, full-wave numerical technique for solving open boundary electromagnetic problems. Using this technique, you can analyze electromagnetic radiation, scattering and wave propagation problems with relatively short computation times and modest computing resources. The method of moments is an integral equation technique; it solves the integral form of Maxwell’s equations as opposed to their differential forms that are used in the finite element or finite difference time domain methods.