About FIDELITY
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. |
| FIDELITY's
Features |
| 1.
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. |
| 2.
Accept planar, 3D and non-isotropic dielectric materials. |
| 3.
MS-Windows based, menu-driven graphic interface for interactive
construction of planar and 3D structures as objects. Strong
geometry editing and checking capability. |
| 4.
Multiple 2D and 3D views for better visual understanding of
the structures in editing. |
| 3D
Structure |
E-Field |
H-Field |
| 
A
plastic-coated cellular handset modeled on FIDELITY
|
|
| 5.
Radiating boundary conditions modeled as various absorbing boundary
conditions including PML. Antenna structures can be modeled
efficiently and accurately. |
| 6.
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. |
| 7.
Pre-defined coaxial port, microstrip port, rectangular waveguide
port, circular waveguide port and user-defined port allow hassle-free
port definition. |
| 8.
Integrated preprocessing and post-processing. |
| 9.
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. |
| 10.
Radiation pattern calculation. Calculation of antenna directivity,
gain, efficiency and other parameters. The package includes
the PatternView for pattern displays and comparison. |
| 11.
3D electric field, magnetic field and Poynting vector display
with slicing capability. |
| 12.
One simulation yields results in a wide frequency spectrum. |
| 
The
Poynting vector and near field display on a microstrip to
coaxial transition.
|
| 13.
Plane-wave excitation for scattering and shielding investigation. |
| 14.
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. |
| 
|
3D SAR display
in a lossy dielectric block 9 mm next to a monopole
handset antenna: Antenna input power is 0.6 W at 0.835
GHz. Total absorbed power is 0.52 W (86%). SAR-value
as high as 16.4 W/kg is detected at the dielectric surface. |
|
|
| 15.
Frequency-domain field calculation and display. |
| 16.
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. |
| 17.
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. |
| 
(a)
Time signals of 116000 steps for regular simulation.
|
| 
(b)
Time signals of 5600 steps with convergence acceleration.
|
| 18.
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. |
| 19.
Frequency-independent human head models: |
| 
The rotated head model on Fidelity
3.5
|
|
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FIDELITY |
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