EM.Libera Technical Specifications

EM.Libera: 3D wire and surface method of moments solvers for simulating free-space structures

EM.Libera in a Nutshell

EM.Libera is a full-wave 3D electromagnetic simulator based on the Method of Moments (MoM) for frequency domain modeling of free-space structures made up of metal and dielectric regions or a combination of them. It features two separate simulation engines, a Surface MoM solver and a Wire MoM solver, that work independently and provide different types of solutions to your numerical problem. The Surface MoM solver utilizes a surface integral equation formulation of the metal and dielectric objects in your physical structure. The Wire MoM solver can only handle metallic wireframe structures. EM.Libera selects the simulation engine automatically based on the types of objects present in your project workspace.

Physical Structure Definition

  • Thin metal wires and curves in free space with user-defined radius
  • Perfect electric conductor (PEC) surfaces and solids in free space
  • Homogeneous dielectric solid objects in free space

Sources, Loads & Ports

  • Gap sources on wires and long, narrow, metal strips
  • Gap arrays with amplitude distribution and phase progression
  • Multi-port port definition for gap sources
  • Short Hertzian dipole sources
  • Import previously generated wire mesh solution as collection of short dipoles
  • RLC lumped elements on wires and narrow strips with series-parallel combinations
  • Plane wave excitation with linear and circular polarizations
  • Multi-Ray excitation capability (ray data imported from EM.Terrano or external files)
  • Huygens sources imported from FDTD or other modules with arbitrary rotation and array configuration

Mesh Generation

  • Polygonized mesh of curves and wireframe mesh of surfaces and solids for Wire MoM simulation
  • Connection of wires/lines to wireframe surfaces and solids using polymesh objects
  • Surface triangular mesh of surfaces and solids for Surface MoM simulation
  • Local mesh editing of polymesh objects

3D Wire MoM & Surface MoM Simulations

  • 3D Pocklington integral equation formulation of wire structures
  • 3D electric field integral equation (EFIE), magnetic field integral equation (MFIE) and combined field integral equation (CFIE) formulation of PEC structures
  • PMCHWT formulation of homogeneous dielectric objects
  • AIM acceleration of Surface MoM solver
  • Run parametric sweep, multi-variable/multi-goal optimization and HDMR surrogate model generation for your physical structure
  • Fully parallelized Surface MoM solver using MPI

Data Generation & Visualization

  • Wireframe and electric and magnetic current distributions
  • Near Field intensity plots (vectorial – amplitude & phase)
  • Huygens surface data generation for use in other  EM.Cube modules
  • Far field radiation patterns: 3D pattern visualization and 2D Cartesian and polar graphs
  • Far field characteristics such as directivity, beam width, axial ratio, side lobe levels and null parameters, etc.
  • Radiation pattern of an arbitrary array configuration of the wire structure
  • Bistatic and monostatic radar cross section (RCS) and polarimetric scattering matrix data
  • Port characteristics: S/Y/Z parameters, VSWR and Smith chart
  • Touchstone-style S parameter text files for direct export to RF.Spice A/D

System Requirements

  • Intel core i7 or later processor
  • 16 GB RAM minimum
  • Microsoft Windows 10 operating system or higher
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