A host of electromagnetic simulation tools are available today for modeling electromagnetic systems such as microwave circuits, antenna and associated feeds, electronic devices prone to electromagnetic compatibility (EMC) or electromagnetic interference (EMI) problems, and digital and RF packages. A number of different numerical techniques are used in computational electromagnetics (CEM) solvers, each of which has its own strong suit, as well as limitations. The solvers include the finite element method (FEM), method of moments (MoM), transmission line modeling (TLM) method, finite integration technique (FIT), and finite difference time domain (FDTD) method. Among these, the finite difference method offers an important advantage over some of the other techniques because it is not only flexible as well as general-purpose in its scope of applications, but it is highly parallelizable as well. In this work, we describe a general-purpose electromagnetic simulation technique, which is based on the parallel conformal FDTD method, and we illustrate its engineering applications to the simulation of microwave devices and components...  Read Full-Text Article (pdf).

GEMS version 6.0 is significantly different from the previous versions in both the graphical interface and simulation engine. New GEMS version allows users to efficiently achieve the accurate results using a single PC or PC cluster. For example, using 2 regular computers, you can reduce the simulation time to half and solve the double size of problems without requiring any extra equipment. Using four regular computers, you can accelerate the simulation up to almost 4 times and solve four times larger problems with as less as 200€ network device investment. GEMS works well on both Windows and Linux platforms. GEMS supports online simulation, namely, you can simulate jobs from anywhere in the world as long as you have an internet connection.