The Applications Examples library contains a variety of demonstrations that explain how Remcom engineers solved problems in categories ranging from antenna design and placement, biomedical, wireless communications, microwave circuits, radio wave propagation, and more.
Performance of a 12-port handset antenna array operating in LTE bands 42/43 (3400-3800 MHz) and band 46 (5150-5925 MHz) is analyzed in XFdtd for varying hand hold positions on the device. The results computed include S-parameters, Gain, Efficiency and Envelope Correlation Coefficient.
The following example investigates WiFi throughput coverage in a house provided by 802.11ac routers operating at 5 GHz using an 80 MHz bandwidth. The geometry for the house was imported from a CAD file and a flat terrain was placed underneath the house.
This example details the setup and execution of RCS calculations using XGtd’s X3D PO MEC model and compares the predictions to those made using XFdtd.
Simulations are performed on a reconfigurable 12-element antenna which produces vertically and horizontally polarized gain patterns and is intended for base station use.
The millimeter wave frequencies being planned for 5G systems pose challenges for channel modeling. At these frequencies, surface roughness impacts wave propagation, causing scatter in non-specular directions that can have a large effect on received signal strength and polarization. To accurately predict channel characteristics for millimeter wave frequencies, propagation modeling must account for diffuse scattering effects. Wireless InSite’s diffuse scattering capability is based on Degli-Esposti’s work.
In this example the signal transmission between a massive MIMO base station and a mobile device located in downtown Rosslyn is analyzed using Wireless InSite’s MIMO capability.
This example analyzes the coupling between four circular patch antennas mounted on the sides of a Boeing 757. The antennas transmit and receive at a frequency of 2.4 GHz. Coupling between each antenna is characterized using XGtd’s S-Parameter output, which can be displayed in the user interface or exported to a v1.1 Touchstone file.
Ad hoc peer-to-peer networks can provide reliable communications in emergency situations where fixed infrastructures, like base stations, may not be available. This example demonstrates Wireless InSite's Transceivers capability.
A simple antenna for LTE band operation is added to the PC board of a smartphone in XFdtd and the matching circuit is tuned for operation in multiple frequency bands. The component values in the matching network are chosen to maximize system efficiency.
XFdtd's Circuit Element Optimizer is used to determine optimal matching component values for a dual purpose antenna.
The capacitance matrices for a 3x4 touchscreen are analyzed in an unloaded and loaded case. Based on the changes in capacitance, the location of the 1 mm stylus is identified.
Crosshole Ground Penetrating Radar is examined in XFdtd. The ability to find COP and MOG data is shown.
An antenna design for hepatic microwave ablation is simulated in a dielectric emulating liver tissue to determine antenna performance, SAR distribution, and thermal response.
A lowpass birdcage coil designed to operate at 64 MHz is simulated to show B fields in both unloaded and loaded conditions. When loaded with a heterogeneous human head model, the temperature rise caused by exposure to the fields of the coil is computed using XFdtd’s biological thermal sensor.
The performance of a basic cellular telephone worn on the hip of a human male is studied for varying positions of the wearer.
In this example a simple PIFA antenna is simulated and the return loss validated against measured data.
In this example, the impacts of a lightning strike on a simplified wind turbine are compared for different strike locations by comparing the magnetic fields created inside the nacelle.
Wireless InSite can model Maximum Permissible Exposure (MPE) to determine if there is a hazard to personnel from a particular high-power EM source. This output is displayed as color coded hazard zones within the GUI of Wireless InSite.
Remcom’s Wireless Insite provides a way to handle uncertainty in a scenario through the use of Monte Carlo parameters for elements within the scenario. This example demonstrates how to utilize Monte Carlo materials within Wireless InSite to vary material properties quickly and efficiently.
Wireless InSite has a hybrid method that combines the full 3D ray tracing model (X3D) with an empirical model called COST 231 to handle uncertainty with the interior layout of a floor plan. This example demonstrates setting up a typical scenario using the hybrid method.
Wireless InSite provides an efficient , powerful way to analyze a multiple input scenario within an urban environment. This example demonstrates how to utilize Wireless InSite’s Communication Systems Analyzer to calculate total combined power and strongest transmitter for an urban environment.
Remcom’s MPI+GPU technology and large memory support are used to simulate an inter-vehicle communication system operating in traffic on a highway. This example demonstrates how massive electromagnetic design problems become tractable while still using the high resolution offered by an FDTD simulation.
Signal propagation of a WiFi transmitter is evaluated in an aircraft interior, with and without passengers present.
In this example a 9-pin connector is imported from a CAD file and simulated to determine the S-parameters.
A basic example of a parallel plate capacitor is charged in two ways within XF7: by a current source and by static voltages placed on each plate. The resulting electric fields from each case are compared.
This example demonstrates the ability of XFdtd to simulate dielectric materials with off-diagonal terms in the permittivity tensor. The case in point here is the computation of bistatic radar cross section from an anisotropic sphere excited by a plane wave.
Since XFdtd includes frequency-dependent dielectric and magnetic materials, it is capable of making three-dimensional calculations for double negative materials, also called negative index materials and metamaterials.
Basic bistatic scattering is demonstrated for a conducting sphere with XF results compared to measurements.
Simulation of rectangular waveguides which are bent to create mode converters including TE20-TE10 and TE40-TE10.
XFdtd is used to analyze a Rotman Lens.
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