Welcome to the June edition of CST’s E-News, our series of regular news and feature updates.
We hope that you find the contents relevant, interesting, and informative. Any feedback and suggestions for future editions is welcome.
The low frequency tool, CST EM STUDIO® (CST EMS), has been enhanced significantly in terms of numerical technology, user friendliness and post-processing capabilities.
Users of CST EMS already benefit from a wide variety of solvers and now a new 2D Cartesian and axi-symmetric magnetostatic solver has been added. For the right application, this can be several orders of magnitude faster than a 3D solver. It takes just a few mouse clicks for a 3D model to be converted to 2D at a user-defined plane. This ensures parity between the 2D and 3D models. Consistent with this approach is the support of common parameterization and post-processing facilities between the models.
Curved elements with 3rd order basis functions are now available for the electrostatic solver. This combination helps provide better geometrical approximation and facilitates highly accurate results with fewer elements.
Improvements can also be seen in the post-processing of fields. A significant feature is the built-in display and export of field lines which is important in establishing critical electric field strengths in, for example, high voltage equipment where the risk of breakdown needs to be estimated.
Additional sources in this release include voltage-driven coils and solid current paths.
To estimate the quality of electromechanical simulations, a force convergence monitor has been introduced allowing the convergence of force to be visualized during mesh adaption.
The new System Assembly & Modeling capability can be applied to run the optimizer over a nested parameter sweep, to compare different models in one project or to couple different physical simulations like low frequency, thermal and mechanical. All these simulations can be set up in one environment (CST DESIGN STUDIO™) and a parameter sweep or optimizer run can be performed simultaneously for all models.
Come and visit us at CoilWinding in hall 1.2, booth #2016 for an on-line demonstration of CST EMS.
The increasing electrification of automotive platforms, driven by rising content for several vehicle applications, such as hybrid or electric vehicle powertrain solutions, driver assistance systems, as well as the rising use of consumer electronics devices in automobiles, creates additional challenges for engineers. The electromagnetic behavior of the entire system must be addressed in order to meet quality and safety requirements. In particular, the electromagnetic emission of dedicated components or electronic control units (ECU) can cause an undesired impact on the vehicle network or other devices in the vehicle. Malfunctions caused by electromagnetic emissions require additional iterations in R&D, possibly requiring changes to be applied to the physical implementation of the ECU such as the architecture, filter components or even other more critical design changes.
These changes are often cost and time intensive. Due to the very high cost pressures in automotive, as well as the challenging time-to-market conditions R&D, project teams leverage simulation based tools to predict the electromagnetic emissions in order to identify and tackle issues early in the vehicle development phase before a hardware prototype is available. This allows R&D teams to uncover problems early and explore possible options to fix technical issues. Using this approach can ensure that project deadlines are met and that the required product quality is addressed, which ensures that end-customers are satisfied with the product.
Driven by the demand of their joint automotive customers, Synopsys and CST AG recently launched a technology partnership to address the requirements of an integrated electromagnetic system simulation solution. Both companies have joined forces to leverage complementary technology strengths around their solutions, Saber and CST STUDIO SUITE.
CST STUDIO SUITE allows engineers to create highly accurate 3D models, which can be simulated in time or frequency domain. Saber provides the capability of simulating complete automotive systems, including for instance, networking systems, circuits and IC components. In order to leverage the complementary strengths of their products, both companies have developed an interface between the tools, allowing users to export 3D simulation based models from CST STUDIO SUITE and reuse them in Saber for a complete system simulation. The solution is an automated approach. After the initial creation of a structural component model and 3D simulation in CST STUDIO SUITE, the model can be exported into a Saber model and integrated into Saber’s user model library using a few mouse clicks. The interface will be shipped with CST STUDIO SUITE and has been released through the 2012.SP3 service pack.
“In order to perform a reliable prediction of EM emissions for automotive networks, we require the reuse of accurate models from CST Studio Suite in Saber in the context of ECU system simulation.” Stefan Heimburger, R&D Engineer Robert Bosch
Realistic environments containing multiple aggressors (transmitters) and multiple victims (receivers) pose significant engineering challenges with respect to cosite interference. In order to predict cosite interference accurately, a large number of contributing factors have to be taken into account. In particular, the RF performance characteristics of each transmitter (Tx) and receiver (Rx) as well as the wideband coupling/isolation between all antennas must be considered in order to identify and eliminate undesired interference between systems.
The collaboration between CST and Delcross will bring together EMIT's RF system models and predictive engine for quantifying the impact of interference on system performance with the powerful computational electromagnetic solutions of CST STUDIO SUITE.
This integration provides a high-fidelity solution for the prediction of cosite interference in complex, RF-dense environments.
CST is pleased to announce that Delcross Technologies’ EMIT (Electromagnetic Interference Toolkit) is now available in the US through the CST of America sales channel. The software will be fully supported by CST’s skilled team of electromagnetic specialists.
Further information on EMIT and Delcross' other products can be found at www.delcross.com.
Antenna Magus Version 4 was released in May. This tool offers unparalleled antenna design possibilities and now features over 200 antennas, which confirms its position as the largest commercially available database of antenna designs. Version 4.0 sees the introduction of some exciting new antenna designs and expanded array synthesis options. A wide variety of “application specific” designs were included amongst the 22 new antennas.
This new capability focuses on solving application specific problems such as WLAN, GPS and other broadband applications, where design objectives are predefined by the application area, or where complex topologies preclude algorithmic synthesis as a design approach.
Other improvements and additional features include:
This is just a selection of this release’s highlights. If you haven’t seen Version 4 yet, contact your local CST sales representative for a free evaluation copy and explore a new world of antenna design.
CST and Nuhertz Technologies®, LLC now provide a solution which enables users of FILTERSOLUTIONS™ software to export their results directly into CST STUDIO SUITE®.
FILTERSOLUTIONS, the filter synthesis program developed by Nuhertz®, provides instant, accurate filter designs in various media including Distributed Line, Lumped Element, Digital and Active filters.
A narrated video describing the design verification of a Ring Resonator filter, designed in FILTERSOLUTIONS, and then exported into CST STUDIO SUITE, is available on the Nuhertz Technologies homepage, and can be viewed here here.
Users of FILTERSOLUTIONS are initially presented with a set of solutions that meet the transfer functions of the filter circuit. The designer can then select the most appropriate, taking the required design characteristics such as size, materials or layout limitations into consideration. The real-world calculation of parasitic responses can also be considered. For additional tuning flexibility, the user is able to manipulate the pole and zero crossings of the filter prior to exporting to CST STUDIO SUITE.
For more information, including trial downloads and license options/ pricing, visit www.nuhertz.com.
We will be running a series of presentations on booth #1615 at MTT-S IMS 2012 in Montreal. Please join us for these and enjoy some surprise giveaways at the end of each talk. Topics will include a version 2012 update and some current industry hot topics such as antenna and filter synthesis, antenna co-site interference analysis, multipacting, and signal/power integrity analysis.
The full schedule is below. We hope to see you at our booth!
Tuesday, June 19th:
Wednesday, June 20th:
The 7th European User Conference (EUC) was held in Mannheim, Germany, May 23-25, 2012. After the optional training sessions on Wednesday afternoon and an informal evening reception in the hotel gardens, the actual program started on Thursday morning.
Our keynote speaker, Helmut Wolf, Head of Feed Products at EADS Astrium, gave an enlightening presentation on "RF Analyses and Analysis Requirements for Telecommunications Satellites”. The EUC closed with a roadmap presentation by Dr. Peter Thoma, Managing Director R&D.
You can find more details on the technical program and all available presentations at http://www.cst.com/Content/Events/EUC-2012-Presentations.aspx
The 8th European User Conference will take place in Stuttgart, Germany, April 23-25. We will update you as soon as more details are available. We hope to see you in Stuttgart.
Differential (DIFF) transmission lines are generally considered to be one of the most commonly used passive interconnect structures for high speed data transmission. Typically there are two configurations of DIFF transmission lines used to transfer signals in printed circuit boards (PCBs) and/or packages: stripline and microstrip line.
A stripline represents a guiding structure which provides a pure transverse electromagnetic (TEM) mode of propagation. The transmission line is shielded between two metal layers (typically the power and ground plane), and therefore also provides excellent performance in terms of EMC/EMI. A microstrip line is routed on a dielectric substrate and referenced to a ground plane. Because of the inhomogeneous substrate/air interface, only a quasi TEM propagation mode is developed on the line. This can produce larger signal degradation in high speed signals and also cause higher radiation levels because of the absence of shielding.
Read the full article.
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