FDTD Simulator for 3D EM Modeling of Antennas, Microwave components, SAR, RCS & EMI/EMC Analysis

At a Glance


EMPIRE XPU– developed by engineering excellence – is one of the leading 3D electromagnetic field simulators. It is based on the powerful Finite Difference Time Domain method (FDTD), which has become an industrial standard for RF and microwave component and antenna design. Due to EMPIRE XPU’s unique adaptive on-the-fly code generation it exhibits the fastest simulation engine known today. With this highly accelerated kernel full-wave EM-simulation problems can now be solved in minutes which used to take days some years ago.


For structure definition, a powerful Graphical User Interface is included in the EMPIRE XPU package and several structure import and export formats are supported. EMPIRE XPU’s applicability ranges from analyzing planar, multi-layered and conformal circuits, components and antennas to multi-pin packages, waveguides, and SI/EMC problems including the device’s operational environment. Time signals, scattering parameters, and field animations are generated accurately for a broad frequency range within only one simulation run. Monitoring and animation capabilities give physical insight into electromagnetic wave phenomena while accurate results are obtained with little effort.

                   INTUITIVE 3D DESIGN             MEMORY EFFICIENT                SUPER FAST (XPU FDTD)                                                  

Intuitive 3D/2D Design Interface

Near Field & Far Field Visualization

Parameter Sweep

Especially Suited for Multi-Layered RF Components and for Antennas on LTCC



Simulation speed and size using EMPIRE XPU

on standard PCs




 FDTD on Dual Xeon PC with one Nvidia Tesla K80 GPU card



* XPU technology which is a smart implementation of the Finite Difference Time Domain (FDTD) algorithm on modern CPU architectures. It can drastically reduce simulation times while (in contrast to GPU solutions) maintaining full access to the available main memory.


Ka-Band / 5G DBF frontend module

Simulation time: < 2 h

Memory usage: 16 GB

Size: 600 Mcells

Dual Xeon workstation

ADS-B Satellite antenna

Simulation time: 6 min

Memory usage: 2 GB

Size: 44 Mcells

Quad Xeon workstation

Evaluation License Request form for EMPIRE XPU: