ANSYS Multiphysics provides a full-wave electromagnetic solver applicable to resonant, propagating, radiation and scattering phenomena in the frequency domain. This analysis capability is ideal for the engineer involved in the design of RF or microwave passive components, antennas, attenuators, interconnects and related high frequency structrures.
Incident plane wave scattering off unit cell of a periodic structure
ANSYS Multiphysics offers static or fully animated visualization of the electromagnetic field/wave in the modelled finite element space, plus near and far field extensions.
Automated post-processing calculations provide electric and magnetic field intensity, quality factor, scattering matrix parameters, voltage, current, characteristic impedance, radar cross section, far and near electromagnetic fields beyond the modeled domain, antenna patterns, inldung period structures, and Joule losses. ANSYS, Inc. Variational Technology (VT) Fast frequency sweep module allows for efficient calculation of frequency-dependent parameters.
ANSYS Multiphysics can fully analyze electromagnetic heating effects. Electromagnetic energy is lost in the form of heat energy in lossy dielectrics and resistive conductor materials. This is often referred to as Joule loss or Joule heating. This provides users with the ability to model temperature distribution, and furthermore, understand how temperature may additionally effect the structural aspects of the device being analyzed in addiona to HF electromagnetic effects.
Resultant tepmerature from RF energy lost in a coaxial 50 Ohm load
Engineers interested in HF thermal effects are generally split into two camps: Those who want to deliberately want to convert HF energy into thermal energy and those that do not.
ANSYS Multiphysics is unique in the RF/microwave analysis industry in that is offer HF thermal coupled physics in "one, non modular product".
The analysis flow follows the same process as a typical HF Emag FEA analysis: Build the model, apply loads and boundary conditions, mesh and solve. However, using the ANSYS Multi-field solver, the user must set up two physics fields, field 1 for the HF Emag analysis, and field 2 for the thermal analysis. The user also specifies what loads are transferred between the two fields, in this case heat generation rate.
