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CST Studio Suite 2021 builds on industry-leading simulation technology with a range of new features for the design, simulation and optimization of components and systems. New features include encrypted data sharing, the next generation of Perfect Boundary Approximation (PBA), full integration of the voxel body model poser, and the hybrid solver for bidirectional hybrid coupling between all the general purpose high-frequency solvers.

The 2022 release is also available on the Dassault Systèmes 3DEXPERIENCE platform, allowing direct links to other design and simulation tools.These tools increase the agility of CST Studio Suite for modeling and simulating complex systems, and allow electromagnetic simulation to be applied in large projects spanning multiple departments and suppliers.

Facilities and software features of CST STUDIO SUITE

-Local graphical user interface based on Windows

-Multiple interface between documents

-Tools variables, parameters and the message window

-(OLE) Linking and Embedding Automation Server (COM / DCOM)

-Transfer Parameters

-Automatic Optimization

-Animation Layout

-Automatic creation of power point slides

-Project Management

-Ability to switch between different software components, including



Components include a CST STUDIO SUITE

-CST MICROWAVE STUDIO – CST MWS: edge tools for speed and accuracy leading up to the three-dimensional simulation of high-frequency devices.

-CST EM STUDIO – CST EMS: simple tools for design and analysis of static and low-frequency devices such as motors, sensors, transformers and …

-CST PARTICLE STUDIO – CST PS: to simulate the motion of charged particles, all based or otherwise. This includes the electron gun, cathode ray tubes and tools from the hand.

-CST CSBLE STUDIO – CST CS: to simulate the entire signal detection and analysis of electromagnetic compatibility or incompatibility of cable glands.

-CST PCB STUDIO – CST PCBS: to simulate the sound signal and detect electromagnetic compatibility or incompatibility of the printed circuit board.

-CST MPHYSCIS STUDIO – CST MPS: to analyze the thermal and mechanical stress.

-CST DESIGN STUDIO – CST DS: The tool is versatile and combines circuit simulation to electromagnetic helps

What\’s New in CST Studio Suite 2022

Advanced Modeling, Schematic and Post-processing

-Modeling Stackup bending enhancement

-Schematic usability enhancement, such as hierarchical Design Studio block and MDIF block

-Dedicated 5G Post-processing

-Human model library and other enhancements in Bio- Electromagnetics

Antenna and Microwave Component Design

-Antenna Array workflows and solver enhancements

-Eigenmode analysis support for Hexagonal Unit Cells

-Sensitivity analysis for Geometrical Parameters and post-process tuning


-Support non-circular drill shapes in PCBS

-DDR4 Analysis improvements

-IBIS & IBIS-AMI buffer models – improvements and Component Library examples included

-Drift diffusion solver for semiconductor devices in micrometer range.

Communication and Detection

-Meshing robustness and performance improvements

-Time domain solver performance improvements: MatrixCalc with MPI, 3D field monitors on GPU,general performance improvement

-Interference task workflow and performance improvements

-Integral equation solver supports thin planar dielectrics, NFS and symmetry planes

-Asymptotic solver Channel Impulse Response (CIR), Range/Doppler map

Electromagnetic Compatibility and interference (EMC/EMI)

-pRLC solver – Open Boundaries and improved Capacitance Results

-Direct Access to IDEM fitting in Design Studio

-Reduced spectral leakage with FFT Windowing for transient tasks in Design Studio

-Thin Panel support with frequency domain solver

-Simulation speedup for complex bi-directional cable o-simulation

Electric Drive Design

-Efficient End-winding simulation (broadband)

-Powertrain System simulation with Partial RLC Solver now with Linux support of exchange formats.

-Considerable speed improvements for Powertrain System Simulation

System Requirements

OS:Server 2008 R2 SP1 / Windows 8.1 / Server 2012 R2 / Windows 10

Minimum requirement

CPU:Intel x86-64processor

Memory:16GB RAM

GPU:100% OpenGL compatible graphics card

Storage:30GB of free disk space

High end server/ workstation recommendation

CPU:Dual Intel Xeon Scalable (also known as "Skylake" ) processor

Memory:32– 64 GB per CPU

GPU:NVIDIA Quadro series card dedicated to CAD/CAE applications

Storage:At least 500GB hard disk drive/SSDs may be used, but are not necessary for good simulation performance

Whats New

CST Studio Suite 2023.03 – Release Notes

General / Environment

3DXML Graphics Data import: Better handling of mesh names containing invalid characters.

Fixed out of memory error when healing circular curves from DXF import.

Corrected edit behavior of a renamed farfield source.

Adjusted update behavior, if F7 message is shown directly after project open.

Upgraded 3D CAD import to support the latest versions. New Feature!

System Assembly and Modeling (SAM)

Fixed sporadic wrong invalidation of simulation projects that are either huge and/or calculated on a slow network file system.

Fixed that 1D material results of simulation projects were incorrectly marked as outdated in the master project.

When creating unit cell simulation projects for an array task, which has only one port as element model, then this port is set in the solver setting.

Fixed an issue in the activation of the excitation viewer for array task simulation projects where the direct tree parent is not an array task.

Fixed an issue in the port numbering for arrays using a subarray as element model.

Fixed opening of full array simulation projects, which were created with older versions and where the array type has been changed to multiple excitation lists.

Inherit domain decomposition settings from reference project for simulation project creation and export.

EDA Import / EDA Tools

Support import of IPC-2581 Revision C. New Feature!

When importing from Cadence: solder/pastemask shapes from padstacks are now available as User Layers to Python scripts. New Feature!

Distributed Computing (DC)

Fixed stability issue of DC Main Controller when all tokens are in use.

Fixed reset of error and warning count when distributed Parameter Sweep/Optimizer is used.


Fixed Combine Results workflow when SAR results are present.

High-Performance Computing (HPC)

Fixed various minor issues for the cluster utility scripts, see also cluster utility release notes file.

CST-Abaqus co-sim can now be used with the Linux based cluster utility scripts. New Feature!

CST Microwave Studio – General

Removed inconsistency in multipin port modes between broadband and single frequency calculations.

Fixed error that was caused by face constraints outside the calculation domain.

CST Microwave Studio – Transient Solver

Fixed various threading issues in case of multi-GPU.

Improved stability in calculation of magnetic fields at waveguide ports for low frequencies.

CST Microwave Studio – Frequency Domain Solver

When called for a task on the schematic, the F solver may have erroneously reported that some frequency range was not covered; improved feedback.

CST Microwave Studio – Frequency Domain Solver (Tetrahedral Mesh)

Domain decomposition: reduce numerical power loss when repetitions are used by improving the element marking during the adaptive mesh refinement.

Domain decomposition: fixed solver termination during mesh refinement on very high core count machines.

Domain decomposition: fixed modeler crash for empty (non-saved) projects, which activate the domains solver without opening the domains dialog first.

Domain decomposition: fixed solver termination when repetitions were used and domain edges penetrated infinitely thin lossy metal sheets.

Domain decomposition: fixed solver termination when repetitions were used due to invalid detection of similar domains.

Domain decomposition: fixed solver termination when repetitions were used due to numerical noise in CAD operations.

Discrete face ports and lumped elements now report a message about a wrong number of conductors rather than a general exception in case the setup is unsupported.

Mesh elements no longer push through EM symmetry planes during non-parametric optimization.

Fixed incorrect scaling of S-parameters with EM symmetry in non-parametric optimization workflow.

CST Microwave Studio – Eigenmode Solver

Improved accuracy for lossless eigenvalue problems in General (Lossy) method.

CST Microwave Studio – Integral Equation Solver

Fixed solid based farfield calculation for thin panel.

CST Cable Studio

Fixed failing creation of 3D cable for USB cable.

Fixed split segment command.

Fixed management of cable ports on creation of connection segments.

Fixed screen impedance preview: shielding effectiveness can be visualized now.

CST EM Studio – LF Time Domain Solver (Tetrahedral Mesh)

Fixed an issue that not all switch monitors have been shown.

CST EM Studio – Partial RLC Solver

Made solver dialog resizable again.

CST Particle Studio Solvers

Enabled mixed SCL and thermionic emission from a single source and fixed thermionic particle emission issue that lead to significantly increased particle densities in the gap region.


Fixed issue when using angle sweeps.

Fixed issue when copying arbitrary waveguide that contain parameter definitions.

Fixed issues when exporting Fest3D projects with infinite radiating array elements to CST Studio.

CST PCB Studio

Parameter sweep in SITD with buffer and corner now stable.

Provide more information if part library export fails.

CST Design Studio – General

Properly respect local task units when initiating 3D calculations.

Avoid instability in MDIF import in case tabs are mixed into the empty spaces.

Improved stability when executing extensive automation scripts manipulating the schematic.

Prevent instability for a very specific configuration.

Fixed issue in interactive IdEM vector fitting of Touchstone blocks in 2.0 format with non-equal port impedances.

Fixed bug that caused resized images to revert to original size on save.

The Device Model Library now correctly filters the selected device type.

Avoid inappropriate DC accuracy warning for IdEM service fitting results.

Allow a short for load definitions by using zero impedance in transient tasks.

CST Design Studio – Interference Task

Fixed issue when deleting RF systems from the navigation tree.

CST Design Studio – Hybrid Solver Task

Fixed report of invalid port impedance values for Asymptotic Solver domains.

Fixed the conversion of frequency units for a list of arbitrary frequency samples (relevant for AP app).


Fixed an issue in launching IdEM as Vector Fitting method from CST Design Studio.

Filter Designer 3D

Added option to display denormalized coupling matrix (self resonance, coupling bandwidth and external quality factors). New Feature!

Automation / Macros / Result Templates / External Data Access

Updated macros for Optenni Lab to newest version.