Product Update Information
XFDTD
Wireless InSite
The latest release of Wireless InSite, version 2.1, has
The latest update to XFDTD, version 6.3, includes many
enhanced propagation modeling for UTD over irregular
new features and enhancements. Following the requests of
terrain and full 3D propagation. Movie capabilities
our customers, antenna patterns may now be displayed in
and JPEG export functionality have been added and
3D, line plots have more interactive capabilities and PML
enhancements to the user interface have been made.
boundary condition has been updated to the latest state-
of-the art technique.
For those using the biomesh models, Remcom has added
a female biomesh model as well as the ability to display
these models in solid mode. Following popular requests,
other animal
models may be
downloaded from
the Remcom
web site at no
additional cost.
Users of the IGES
and STEP import
capabilities may
New Features XGTD v2.2
now export these
same file formats allowing electromagnetic designers
·
Enhanced creeping wave modeling
to modify the models within XFDTD and provide CAD
·
Enhanced wedge diffractions feature
versions of these modified files back to their mechanical
·
Plane wave transmitter sets
drawing packages. In addition, Remcom is now offering
·
Far zone RCS calculation
CATIA importation for XFDTD.
·
New quarter-wave monopole antenna
·
Sectoral horn antenna capability
XFDTD is now supported on a wider range of platforms, as
·
Circularly polarized components of far zone gain
described on the Remcom web pages with enhancements
·
Project view grid
for more 64-bit systems and the MPI version.
XGTD: A Ray-Based Approach for EM Analysis of
Electrically Large Structures
XGTD is a general purpose ray-based electromagnetic analysis
with XGTD, one unique by-product of using a ray method is
tool suitable for antenna radiation, interference and scattering
that the solution not only predicts how much energy arrives at
applications. XGTD combines GTD (Geometrical Theory
a field point, but it also shows the discrete pathways by which
of Diffraction), UTD (Uniform Theory of Diffraction), and
the energy travels to the field point from the source. This is an
creeping wave theory to include all the important physics that
insight into the physics of the problem that full wave solutions
govern propagation around structures that are much larger
can not readily provide.
than the wavelength.
For many problems, it is not actually a matter of choosing to use
A Ray-Based Approach vs. Full
XFDTD or XGTD, but of using both in order to obtain the most
accurate solution. The most typical combination of the
Wave Methods: Pros and Cons
two methods is to use XFDTD for the antenna analysis
and XGTD for the analyzing the propagation around any
While the full wave solution to
large obstructions.
Maxwell's Equations provided
by Remcom's XFDTD software
will usually be preferred over the ray-
In short, whether XGTD is used alone or
based solution, the size of the problem in
in conjunction with XFDTD, its ray-based approach
wavelengths may not permit this analysis
can accurately solve many large radiation, interference and
due to the computer memory required and
scattering problems on a desktop computer, with no upper
the long computation time. Aside from the
limit on the frequency.
advantages of much lower memory requirements and run time
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