Software - FIDELITY FDTD-Based EM Simulator

FIDELITY is a FDTD (Finite-Difference Time-Domain) based Full-3D EM Simulator for modeling microwave circuits, components, and antenna, wireless/RF antennas, EMC and EMI structures, and other high-speed and high-frequency circuitry.

Features

• Non-uniform mesh for modeling planar and 3D structures with complicated dielectric configuration. Users are not limited to the mesh. The mesh can be adjusted to fit a geometry.
• Accept planar, 3D and non-isotropic dielectric materials.
• MS-Windows based, menu-driven graphic interface for interactive construction of planar and 3D structures as objects. Strong geometry editing and checking capability.
• Multiple 2D and 3D views for better visual understanding of the structures in editing.
• Radiating boundary conditions modeled as various absorbing boundary conditions including PML. Antenna structures can be modeled efficiently and accurately.
• Automatic generation of non-uniform mesh and meshing independent geometry entry allows users to enter a structure once for different meshing schemes. The mesh for the geometry can be changed anytime before a structure is simulated. Change of mesh does not need re-entry of the geometry.
• Pre-defined coaxial port, microstrip port, rectangular waveguide port, circular waveguide port and user-defined port allow hassle-free port definition.
• Integrated preprocessing and post-processing.
• Automatic s-parameter extraction allows accurate and fast calculation of s-parameters and input impedance. The package includes a network simulator for flexible post-processing of s-parameters and impedance parameters.
• Radiation pattern calculation. Calculation of antenna directivity, gain, efficiency and other parameters. The package includes the PatternView for pattern displays and comparison.
• 3D electric field, magnetic field and Poynting vector display with slicing capability.
• One simulation yields results in a wide frequency spectrum.
• Plane-wave excitation for scattering and shielding investigation.
• Complete SAR-calculation and display: Colorful display of 3D SAR-distribution and Cartesian display of SAR-distribution. Users can control the input power level and can access the parameters such as absorbed power and radiated power.
• Frequency-domain field calculation and display.
• Automatic time signals convergence detection: Users do not need to guess how many time-steps they need to run simulations. The program automatically detects the convergence and stop a simulation at convergence.
• Time signal convergence acceleration reduces the time marching steps significantly. The following time signals from a patch antenna indicate the difference. Without loosing accuracy, the simulation time is shortened by a factor of 20.
• Localized ports allow users to extract s-parameters in a small region. It saves a large amount of space and simulation time. It also allows simulation of highly packed structures with lumped elements.
• Frequency-independent human head models

Click here to download instructions for obtaining free evaluation licenses from Zeland Software.