GEMS EM Simulator
Waveguide Filter
High-Q microwave component with five cavities. The GEMS can complete the simulation in 2 minutes for an accurate result.
Vehicle Simulation
A Honda Accord is used to demonstrate GEMS performance for the calculation of radiation pattern and conformal surface current. The original model is in AutoCAD surface mesh format. The surface mesh in GEMS is used to calculate the current distribution on the curved surface.
A Jerusalem Cross Frequency Selective Surface (JC/FSS) structure with the multiple layers of dielectric is illumined by a rectangular horn antenna. The thin PEC structure requires the small cell size to generate the accurate results.
Ground Penetrate Radar (GPR)
A pair of Bow-tie antennas are located above the soil to extract the scattered signal of the buried plastic pipe.
MIMO Antenna
A MIMO antenna includes two PIFA structures, which are mounted on a relatively thin dielectric slab. This example is used to demonstrate GEMS performance for MEG and ECC calculation.
Aircraft Simulation
A car model is imported from a CAD file, and its surface cannot be expressed as analytic formula. GEMS can generate a conformal patch array or slot array on the curved surface without any gap. We pick up a piece of roof to add a conformal antenna array or a slot array. .
Microwave Connector
A typical microwave connector is used to demonstrate how to use GEMS to simulate the coupling and transmission. The conformal current distribution on the conductors helps understand the design to get the best performance.
Microwave Component
A three-port microwave filter filled with a meta material structure. The output parameters include the S-parameters, field propagation animation.
Dual Mode Horn Antenna

A dual mode horn antenna includes three parts. A TE11 mode is used to excite the antenna. The outputs include 2-D and 3-D far field patterns, field distributions, and return loss.

SAM Head Model

The SAM head model with a cell phone antenna nearby is used to demonstrate GEMS performance for calculation of 1-g SAR, 10-g SAR, local SAR, and 3-D SAR distribution. 3-D SAR allows you to view the SAR distribution inside the SAM model.

Surface Current Distribution
Due to adapt the rectangular mesh in the conventional FDTD method, the conventional FDTD method cannot calculate the conformal current distribution on the curved surface, which is very important to antenna design and RCS analysis. GEMS new features allow the user to generate the smooth conformal current distribution on the curved surface.