What is CST MICROWAVE STUDIO (MWS)?

CST MWS is a fantastic cool tool for the 3D Electromagnetic simulation of high frequency devices. It simplifies the process of inputting the structure by providing a powerful solid modeling front end which is based on the ACIS modeling kernel. CST MWS' unmatched performance made it no. 1 choice in technology leading R&D companies.

Applications include typical in RF microwave such as in mobile communication, wireless design, antenna, but also increasingly in signal integrity, and EMC/EMI. Having outstanding user friendly interface, CST MWS quickly gives the RF engineers an insight into the electromagnetic behavior of their high frequency designs. CST promotes Complete Technology for 3D Electromagnetic simulation. Users of CST software are given unprecedented flexibility in tackling a wide application range through a variety of available solver technologies.

A key feature of CST MWS is the Method on Demand approach which allows using the simulators or mesh type that is best suited to a specific problem. All simulators support Hexahedral Grids in combination with the Perfect Boundary Approximation (PBA method). Some solvers also feature the Thin Sheet Technique (TST) extension. Applying these highly advanced techniques normally increase the accuracy of the simulation significantly in comparison to traditional simulators.

Since no method works best across all application horizons, the simulator contains three distinctive simulation techniques namely Transient (Time) Domain Solver; Frequency Domain Solver and Eigenmode Solver to best fit their specific application. The broadly applicable Time Domain Solver and the Frequency Domain Solver which simulates on Hexahedral Grids as well as on Tetrahedral Grids, CST MWS offers further solver modules for specific applications. The Frequency Domain Solver also contains specialized methods for analyzing highly resonant structure such as filters.

The most versatile tool is Transient (Time) Domain Solver, which can obtain entire broadband frequency behavior of the simulated device from only one single simulation run (in contrast to the frequency step approach of many other conventional simulators.
This solver is remarkably efficient for nearly all kinds of high frequency applications such as connectors, transmission lines, filters, antennae and many more.

In other hand, the Transient (Time) Domain Solver is less efficient for “electrically small” structures that are much smaller than the shortest wavelength. In these cases it is benefit to solve the problem with Frequency Domain Solver. The Frequency Domain Solver may be used in narrow band problems such as filters or when the usage of Tetrahedral Grids is favorable. In addition to general purpose solver (supporting Hexahedral and tetrahedral grids), the Frequency Domain solver also contains fast alternative for the calculation of S-Parameters for strongly resonating structures.

Efficient filter, diplexers, and cavities design often demands the direct calculation of the operating modes (finite number of modes) in any loss-free electromagnetic device such as filter rather than an S-Parameters simulation.