Tuesday, December 22, 2015

University Publication Award 2015 Winners Announced

The selection process for the CST University Publication Award 2015 has concluded, with each of the four deserving winners receiving a one-year extension of his or her existing CST license.
As always, we are delighted by the response and would like to thank everyone who has continued to support this now 12-year initiative by contributing their paper. 
All submissions were evaluated by our panel, and based on a number of criteria, including originality of the application or the theory, clarity of presentation, as well as the skillful usage of CST software features. 
After carefully assessing them, the following papers (listed in no particular order) have been selected as winners of the CST University Publication Award 2015:

- “60-GHz Thin Broadband High-Gain LTCC Metamaterial-Mushroom Antenna Array”; Wei Liu, Zhi Ning Chen, and Xianming Qing, IEEE Transactions on Antennas and Propagation; Volume: 62, Issue: 9, September 2014, pp 4592 – 4601 (Institute for Infocom Research, A*STAR, Singapore)

- “A Compact Planar Printed MIMO Antenna Design”; Saber Soltani and Ross D. Murch, IEEE Transactions on Antennas and Propagation; Volume: 63, Issue: 3, March 2015, pp 1140-1149 (Hong Kong University of Science and Technology, Kowloon, Hong Kong)

- “Helical Plasmonic Nanostructures as Prototypical Chiral Near-Field Sources”; Martin Schäferling, Xinghui Yin, Nader Engheta and Harald Giessen; American Chemical Society Photonics; 2014; pp 530-537 (University of Stuttgart, Germany and The University of Pennsylvania, USA)

Short Paper Award 2015:

- “Electromagnetic Evaluation of HTS RF Coils for Nuclear Magnetic Resonance”; T. Yamada, A. Saito, S. Oikawa, K. Koshita, M. Takahashi, H. Maeda and S. Ohshima (Yamagata University, Japan)

 With the close of this year’s awards, we are now accepting submissions (limited to one published paper per candidate) for the CST University Publication Award 2016. For more information on our university program, and the upcoming award in 2016, head to our webpage at www.cst.com/academia.

If you would like to explore the previous winning papers, please explore our references archive which has many of our selections from past years. 

Congratulations to our winners and we look forward to reading your papers in the year to come!

Thursday, December 17, 2015

2015 Fall Webinar Series Recap

Last week, we wrapped up our Fall Webinar Series and I’d like to take a moment to thank all of you who joined us in huge numbers. In our Webinar Series we are exploring current technology. This seems to be always popular with engineers who want to stay on the cutting edge of EM simulation, and seeing the interest in different subjects always helps us to gauge how popular different topics are with our users. We have started another series of webinars – getting ahead with - which is focusing on how-to use of our software in sample Flows. In 2016 this series will start on February 4th. You are cordially invited to join. Registration for the webinars will be soon available here.

We were especially impressed with the turnout for two webinars in particular- Phased Array, FSS and Polarizer Design and Simulating Graphene-EnhancedDevices.

The “Phased Array, FSS and Polarizer Design” webinar, by our MW&RF Market Development Manager Marc Rütschlin, showed how the tools in CST STUDIO SUITE can be used to design complex periodic structures such as phased array antennas and frequency-selective surface (FSS) metamaterials.  In this year’s release of CST STUDIO SUITE, we improved the design flow for phased array simulation with the introduction of the Phased Array Wizard. This allows engineers to carry out a full array design– from creating the individual element to simulating the entire array with radomes and other components – in an integrated workflow. If you’re interested in this topic, look out for In February 11, 2016 we will feature a brand new webinar, with a more hands-on step by step breakdown of the Phased Array Wizard workflow as part of our Getting Ahead With Webinar Series.

Graphene is another hot topic, and having been already been a subject of research for a decade (including a Nobel Prize in 2010) the material is now starting to be considered for industrial applications. Because it’s just an atom thick, electrons move across its surface like a gas, and so graphene has some rather unusual electromagnetic properties. “Simulating Graphene-Enhanced Devices”, by CST Principal Engineer Frank Scharf, gave an overview over Graphene and particularly its electromagnetic properties and applications. In the webinar CST STUDIO SUITE special tools that have been implemented to simulate it, such as  a graphene material model, that can be used, with other non-linear material models, to simulate complex devices. The examples that were discussed, spanned an enormous frequency range.

We have webinars throughout the year and I encourage you all to explore our webinar back catalog which is available in our webinar archive.

Martin Timm
Director of Global Marketing, CST 

Tuesday, October 20, 2015

European Automotive Simulation Workshop 2015

About 20 years ago, when crash simulation was already state-of-the-art in the automotive industry, there was the vision to apply a similar simulation strategy to electrical and electronic systems: virtual engineering and testing by means of EM simulation tools at the earliest possible state of development.

Powered by the success of numerical methods when applied to antenna systems, the engineers were excited and keen to also run EM simulations in the area of electromagnetic compatibility (EMC). The idea at that time was to implement simulation strategies for the entire vehicle in order to analyze emission and susceptibility effects including the automotive cable harness, control modules (PCBs), actuators, sensors, antennas, the battery and so forth – all in one go. Unfortunately, simulation methods, software engineering, and hardware capabilities in those days were still behind the requirements for a smooth virtual prototyping and simulation workflow, and so the first enthusiasm passed quite quickly.

Looking back from today’s perspective, it is clear what the problem was: EM software vendors were still relying on single numerical methods like MoM, MLFMM, FIT, BEM, TLM, PEEC, FEM, or others and either running simulations in time domain or in frequency domain.  Only a few visionaries understood then that there isn’t just the one and perfect numerical method for all applications and that real life simulations actually demand hybrid methods which are optimized with respect to minimum wavelength, mechanical structure, aspect ratio, band width, resonant behavior and so on. As an example: onboard electronics pose unique challenges for electromagnetic simulation, due to the difference in scales between different components because in a typical sensing or communication system, the individual traces on a high-speed PCB can be measured in micrometers, the antennas are on the order of millimeters or centimeters, while the chassis that the whole system is mounted on is several meters long.

To help engineers to simulate these components together, CST included the most popular numerical methods in one single Graphical User Interface (GUI) and therefore greatly simplified the EM simulation workflow. Later on, CST developed the System Assembly and Modeling (SAM) framework, which builds on the advantages of Complete Technology by automating the process of simulating complex systems of components. Because of these achievements, electromagnetic simulation finally became a vital part of the automotive design process.
As vehicle electronics get more complex and development cycles tighter, simulation is crucial both for developing new components such as automotive radar, inter-vehicle communication systems and on-board computers, and for increasing the efficiency of tasks that were traditionally done by experimentation, such as electromagnetic compatibility (EMC) and electromagnetic interference (EMI) analysis, antenna placement and cable harness layout.
There are four main application areas in automotive industry where EM simulation tools are employed:

  •          Microwave & RF (antenna design, antenna placement, RADAR components, …)
  •         EDA – Electronics (chip-package-PCB co-design, connectors, cables, …)
  •          Low Frequency (sensors, actuators, bus bars, motors, …)
  •          EMC & EMI (emission, susceptibility, antenna-cable coupling, measurement devices, …)

Due to the close linking and interaction of electronic devices there is a need for interdisciplinary knowledge exchange both on hardware and simulation side. There have been quite a large number of automotive conferences and exhibitions in the past, however most of them were mainly concentrated on hardware and manufacturing business with relatively small attention on simulation matters.
The CST European Automotive Simulation Workshop is a tribute to the immense success of EM simulation. It offers an excellent opportunity to meet engineers and scientists from industry, research and universities on automotive applications.
We are thrilled that we have three keynote speeches from BMW AG, Continental AG, and Robert Bosch GmbH and fifteen talks from research and industry in all four application areas. In addition, CST will present both current technology and the newest developments in EM simulation, together with application examples relevant to the field.
The workshop will take place at an outstanding location with striking architecture and inspiring environment: The BMW Welt Event Forum. BMW Welt is a multi-functional customer experience and exhibition facility of the BMW AG, located in Munich, Germany. In direct proximity to the BMW Headquarters and the Olympiapark, it is designed to present the current products of BMW and be a distribution center for BMW cars. It is just the right place to offer an event forum and conference center for the European Automotive Simulation Workshop.
There will be two plenary sessions and three parallel sessions during the workshop, an early-morning welcome reception, coffee breaks in the morning and the afternoon, and a “gemütlich” lunch break served by Käfer Catering that gives you enough time for networking and communication.

Be part of it and explore what’s coming next in automotive EM simulation. We look forward to seeing you there.

This workshop will take place on 23 November, 2015 in Munich, Germany. Register now to join us.

Dr. Matthias Troescher, CST 

Monday, September 28, 2015

Designing inductive components - webinar preview

Inductors are one of the three most basic circuit elements, so it's no surprise that inductive components are critical to a huge variety of different devices. When designing such ubiquitous components, performance alone is not enough: cost and efficiency are also hugely important requirements. Designing a successful product means balancing these three competing ideas. Frank Weiand is senior application engineer at CST specializing in low-frequency applications. On October 1st 2015, he'll be presenting a webinar on the simulation and optimization of inductive components and devices, including wireless chargers, sensors and current limiters.

We caught up with Frank to ask him what the latest developments for simulating inductive components, and what he thought was the most exciting part of his webinar:

We'll be demonstrating quite a few different applications in this webinar.

With the current release of CST STUDIO SUITE (2015), users can now generate state space models of inductive components, including nonlinear material behavior and core loss computation. With this approach, we can compute the real device’s behavior on circuit level. This is useful in a lot of applications, from inrush current simulations in transformers to optimizing fault current limiters. In the webinar, I'll show an example of a current limiter where the nonlinear material behavior leads to saturation as well as the simulation of inrush currents in transformers.

One hot topic at the moment is wireless power transfer - we'll also discuss that and show how to compute maximum achievable transfer efficiency  for different positions of the coils.

With the innovations in CST STUDIO SUITE 2015, we hope that our users can speed up the development process significantly. In particular, power efficiency is a very important topic which can be improved by using our state-of-the-art simulation, and I'll also be demonstrating some features in this area.

Join us to explore the possibilities for the design of inductive components and to stay up to date with the latest developments in low-frequency EM simulation.

Tuesday, July 7, 2015

2015 YEP Award Winners

The Yes! Education Program (YEP) Award, an initiative run by our partners AET Japan, grants an extended one-year license to universities that use CST software, in order to assist their research projects. The winners of the YEP Award 2014 are Dr. Masayuki Fujita, Associate Professor of Osaka University and Dr. Hiroyuki Arai, Professor of Yokohama National University. 

Winner’s comments
Dr. Masayuki Fujita

We are happy and greatly honored to receive the YEP Award for our recent paper [*]. In this paper, we demonstrated the manipulation of a terahertz electromagnetic wave by a photonic crystal. Terahertz waves have unrealized technological potential and the frequencies are located between radio and light waves. Research on terahertz waves is interdisciplinary and has attracted much attention for potential applications in a wide variety of fields, including photonics, optical science, material science, medicine, biology, chemistry, and information communication technology. However, a lack of efficient manipulation technology for terahertz waves has thus far hindered the development of smart and compact components that would make new applications possible. As a potential route towards such a technology platform, we presented a novel concept that involves the trapping and capture of incident terahertz waves by the in-plane resonance of a silicon photonic-crystal slab consisting of periodic microstructures on a scale comparable to the wavelengths of interest. In order to design the photonic crystal, electromagnetic simulations are very important. CST Microwave Studio is powerful tool for creating simulations. Our Information Photonics Group at Osaka University is developing state-of-the-art terahertz-wave devices and systems towards future advanced applications.

[*] R. Kakimi, M. Fujita, M. Nagai, M. Ashida and T. Nagatsuma, “Capture of a terahertz wave in a photonic-crystal slab”, Nature Photonics, vol. 8, no. 8, pp. 657-663, 2014.

For more information, please have a look at our paper http://dx.doi.org/10.1038/nphoton.2014.150

Dr. Hiroyuki Arai

We are delighted that our paper[*] has been chosen for YEP Award 2014.
In this paper, we presented a waffled waveguide as a beam scanning antenna for wireless optical communication. Optical devices like our antenna are very large compared to the wavelength and it takes enormous time to analyze. CST MW Studio fixes this problem. Our group has been working on
antennas engineering not only optical antenna but also RF antennas such as base station antenna and super gain antenna. CST has large presence for these studies as well. We believe CST contributes to the development of antenna technology.

[*]Hiroyuki Arai, Yodai Morimoto, “Optical leaky wave antenna by waffled waveguide”, The INSTITUTE of ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS

Congratulations to our 2014 winners!

Friday, May 22, 2015

IVEC 2015 Impressions

Electric field magnitude of the TE0,3 mode in a gyrotron at 42 GHz.
CST recently got back from the 16th International Vacuum Electronics Conference (IVEC), which took place from April 27th to 29th in Beijing. At the conference, we presented a joint paper with Queen Mary University, London about gyrotron simulation. There was a lot of interest from attendees, and we got a lot of interesting questions on topics ranging from metal modeling to start-up behavior and mode competition.

This is just one example of the current popularity of gyrotrons as a research topic. Gyrotrons are promising with potential to fill the terahertz gap that currently exists for RF sources. We have recently added new features to CST STUDIO SUITE® that are designed with the special features of gyrotrons – for example, the very high mode number of operation – and we are certain that simulation will contribute the understanding and optimization of these promising devices.

The picture above shows the electric field which has been generated by the beam exciting the wave in the cavity of a 42GHz gyrotron. The TE0,3 mode is then finally propagating out of the taper section, as can be nicely seen by the field patterns there.

If you would like to see more, please have a look at the paper in the IEEE conference proceedings:
M. Balk, C. Chua, X. Li, Y. Alfadhl, X. Chen: 3D Gyrotron Simulation with CST STUDIO SUITE, Proceedings of the International Vacuum Electronics Conference (IVEC), Beijing, 2014
Monika Balk
Market Development Manager for Charged Particles

Thursday, May 21, 2015

EMC and automotive at the CST European User Conference 2015

The European User Conference took place on the 28th and 29th April, in Darmstadt. The venue for the event is Darmstadt’s pretty new congress center named “Darmstadtium”. An impressive modern building which is sometimes tricky to navigate. Incidentally, the name comes from the chemical element, which was first synthesized in this very city.

Starting in the afternoon, the event continued with three parallel sessions devoted to a broad range of applications. In all sessions, there was a mixture of customer talks and presentations given by CST staff. I was the chairman and also presenter in the session devoted to “Automotive and Transportation”. The first talk about signal integrity simulation in automotive design presented by Stephanie Schatt from Continental in Regensburg underlined the importance for SI simulations in modern automotive electronics. With the increase in the performance of driver assistance functions in cars, the demand for high speed design in automotive has steadily increased. The second talk presented by Daniel Valderas from the University of Navarra examined the coupling from an eddy current brake to a rail sensor. He showed how to model the non-linear material properties in the coil and cascade parts of the model in CST DESIGN STUDIO. In my own talk, I gave an overview of what our automotive customers are simulating with CST STUDIO SUITE. I wanted to show the broad picture, from SAR simulations in a TV Broadcast car, over power integrity simulations of PCB’s to the simulation of anechoic chambers.

On the second day, I spent some time listening to antenna presentation and helping customers in the support center. Traditionally, the EUC closes with a talk from our CTO Peter Thoma on the future directions in the development of our tools. This development should bring really powerful enhancements for EMC simulation capabilities in the upcoming CST STUDIO SUITE version, especially to the circuit and schematic side of things. Expect more information in the future as we approach 2016!

The next EUC will take place in Strasbourg at the end of April 2016. Details of future dates and a lot of presentations from past conferences can always be found here.

Andreas Barchanski,
Market Development Manager for EMC, CST

Tuesday, May 19, 2015

Introducing CST STUDIO SUITE – Student Edition

Our inboxes and our social media feeds are always filled with messages from students around the world asking how they can access CST STUDIO SUITE® for their studies. Well, your calls have been answered!

We’re very excited to announce today the release of CST STUDIO SUITE – Student Edition. This is a package of our solvers available completely free of charge to students, together with a set of tutorial examples based on classic textbook demonstrations of electromagnetic effects.

In CST STUDIO SUITE – Student Edition, you’ll find our high-frequency time domain solver and frequency domain solver, our electrostatic solver and magnetostatic solver, as well as our thermal solvers. Although there are some restrictions to prevent commercial use, you can use CST STUDIO SUITE – Student Edition to simulate systems including coils, antennas, couplers, waveguides and much more. We’re looking forward to seeing what else students can make and discover using the software.

To support it, we’ve also launched the new academia section of our website. This has registration and download links for CST STUDIO SUITE – Student Edition, along with articles and videos showing how the examples can be constructed.

CST STUDIO SUITE – Student Edition can be downloaded from here. We hope you find it both educational and enjoyable!

Monday, May 18, 2015

Looking back on the CST European User Conference 2015

Andreas Bitz of the German Cancer Research Center (DKFZ)
delivering the keynote speech.
This year we hosted our annual European User Conference (EUC) in Darmstadt, CST’s home town. Darmstadt officially carries the title “Wissenschaftsstadt” – “science city” – and it’s especially well-known for its links to particle research and the European space industry, both of which had a strong presence at EUC this year. This is always a big and important event for us that we carefully arrange. This also means that there will a strong personal presence in particular support and development. Therefore it is also one of the best opportunities for our customers and CST engineers and developers to talk personally about challenges and requirements for current and future projects. We were therefore glad that so many accepted our invitation.

Before the actual event, we hosted a series of training workshops at our HQ , but the event proper started with the keynote speech from Andreas Bitz from the German Cancer Research Center (DKFZ), who explained how MRI is used at the DKFZ and how simulation is used to design equipment for 7 tesla MRI, the next generation. We also presented the latest features in CST STUDIO SUITE 2015, while Alan Prior from SIMULIA, Dassault Systemes gave a very interesting talk on multiphysics simulation.

However, the largest part of the EUC is always the technical sessions. This year, we had fifteen sessions in three parallel tracks for a total of 45 presentations from customers and CST engineers. The sessions were arranged differently this year, with topics grouped according to industry, but several interesting trends still emerged.

As ever, antennas and components – especially filters – were hot topics. On the antenna side of things, integration and placement are more important than ever, as engineers have to fit more RF systems on a single platform. In the particle accelerator sessions, higher-order cavities and component impedance calculations were big talking points, with two presentations on each. EMC/EMI were also popular topics, especially for engineers working in the automotive and rail industries.

One other thing that was noticeable was a strong presence from medical and MRI customers this year. The build-up to 7 tesla means that MRI frequencies are increasing, and wave effects such as interference and reflection have a significant effect on image quality. Simulation is therefore a vital design tool for high-field MRI. As in previous years, our EDA session highlighted the increasing complexity of high-speed multilayer structures. Finally, although it may sound dry, the sessions on materials and metamaterials were well-attended and saw a lot of lively debate as customers and CST staff discussed techniques for accurately modeling a wide range of material types.

The last presentation was, as always, led by our R&D Manager Peter Thoma, who gave attendees a glimpse of CST STUDIO SUITE 2016 and beyond. Look out for more information on next year’s release in the upcoming months!

Group photo
EUC has a social side too, and it’s always important visitors have a chance to discuss things not just with us but with their fellow attendees. This year, we had our gala dinner in the Centralstation in the heart of Darmstadt. This was one of the first power stations in the world, and lit up the streets of the town as early as 1888. Although it no longer generates electricity, its beautiful main hall still stands, and made a fine venue for an evening of food, music and comedy.

The next EUC will take place in Strasbourg at the end of April 2016. Details of future dates and presentations from past conferences can always be found here.

Martin Timm
Director of Global Marketing, CST

Friday, April 24, 2015

Girls’ Day at CST

Girls' Day 2015
Great ideas can come from anywhere. At CST, we believe that the diversity of our support and development teams is a key part of our success and innovation. As a result, we are always happy to support programs to encourage girls to study the STEM subjects (that’s science, technology, engineering and mathematics).

Every year, in Germany, tech and engineering firms are invited to take part in Girls’ Day, and present their work to female students, in order to to introduce girls to job profiles which are typically dominated by men. As part of this year’s Girls’ Day, twelve young girls aged 12 to 14 visited our Darmstadt office yesterday to participate in CST's "Girls' Day" event.

We prepared a program to demonstrate the excitement of electrical engineering. After being introduced to the basic principles of electromagnetics and the purpose of simulation, the girls had the chance work hands-on with their own simulation, which they mastered very well!

After that, we talked about the daily tasks of an Application Engineer at CST, before astonishing the girls with some very cool simulation models of gadgets from the real world.

Girls' Day ended with a joint lunch and both the girls and their hosts were really happy with the experience they had made during the day.

We hope that we were able to pass on our excitement for engineering and for EM simulation in particular, and we’re looking forward to Girls' Day 2016!

Thursday, April 16, 2015

Thoughts from the CST Korean User Conference 2015

Attending the CST Korean User Conference 2015

Last week, on April 9th the annual CST Korean User Conference took place. For me, it was the 7th consecutive visit to this event, so speaking there feels like being home. I have been supporting CST’s Korea office already for many years. The ratio of EMC interested users in Korea is pretty high and it is good to see that many of the top-notch electronic companies use our technology. This year more than 130 users joined the event.

My presentation was about the 3D EMC simulation. I started with simple examples of emission from differential lines and increased the complexity of the models in the course of the presentation. After showing the emission from realistic differential pairs on a PCB, I talked about the simulation of an enclosure. In the last part of my talk I explained how to simulate conducted emission from a PWM driven motor control. At least for me, it seemed like these were topics that resonated with the audience.

In the afternoon, Korean users were presenting their applications. There were two MW&RF oriented talks. One was about the simulation of a 24 GHz automotive radar system and one about how to model LTE channel switching by a matching network in Design Studio. Two other talks concentrated on EMC issues of cables in consumer electronics. Both speakers showed emission results from USB and HDMI cables connected to a PCB.

Another interesting point to note about CST STUDIO SUITE usage in Korea is the widespread of GPU based acceleration among the users there. In no other region of the world I have seen so many complex models run on machines equipped with 4 GPUs. So, if you also want to speed up your simulation, consider accelerating it with a GPU.

In a week we will have the European User Conference in Darmstadt. Let’s see what is new among European users.

Andreas Barchanski,
Market Development Manager for EMC, CST

Tuesday, February 10, 2015

"Getting Ahead with..." Webinar Series

Getting and staying ahead in 2015 is what we all want to achieve. To help our customers and users keep ahead of the pack, CST is running the "Getting Ahead with..." Webinar Series. I thought I'd take a minute to explain here what it's all about.

Every fall since 2011 we have been running the CST Webinar Series and getting outstanding results. High registration and live attendance numbers, great interaction and feedback prove it’s well worthwhile, for us and our users.

The fall webinar series is focused on the applications themselves. Demonstrating the applicability of our software to the development of specific, cutting-edge technology is important, but what’s less shown in these webinars is the ease by which this can be achieved.

The “Getting Ahead with …” webinar series seeks to fill this need. Less about the latest industry trends and examples, this series gets down to the bricks and mortar – how to achieve good things by understanding the concepts of our software. Demonstrating the usability of CST STUDIO SUITE, OptenniLab and Antenna Magus, and the existing flows is the purpose of these webinars.

"This series gets down to the bricks and mortar – how to achieve good things by understanding the concepts of our software."

Each tutorial style webinar will give newbie simulators the ability to better tackle their development tasks and to get ahead in their work. Experienced users will also benefit from recapping the flows and from an update on how they change and are extended to include new capabilities or design concepts.  The engineers responsible for creating these workflows will present step-by-step demonstrations of them in each of the five webinars.

The Getting Ahead with... Series comprises the following webinars:

February 19, 2015: Getting Ahead with Optenni Lab
February 26, 2015: Getting Ahead with Antenna Magus
March 5, 2015: Getting Ahead with CST PCB STUDIO
March 12, 2015: Getting Ahead with the CST STUDIO SUITE Modeling Interface
March 19, 2015: Getting Ahead with High Performance Computing in CST STUDIO SUITE

We hope you enjoy this new webinar series and that it helps you get and stay ahead in 2015. We welcome feedback on what you think about it, whether we should repeat the series and how we can improve it.

So, see you live, at the webinars!

Martin Timm
Director of Global Marketing, CST

Thursday, February 5, 2015

Most popular CST content in 2014

Every year thousands of welcome visitors like you come by cst.com and this blog, clocking up an impressive hit count. We here at CST appreciate your interest.

As 2015 moves into its second month, we thought now is a good time to look back on the most popular content of 2014 - based on the number of eyeballs (including yours) - and share it with you.

So here's a flashback.

The five hit count highlights of 2014

Electromagnetic Circuit Co-Simulation of a Touchscreen Capacitance Sensor System

Coming in last, but certainly not least, was this application article prepared by CST's Adrian Scott, the market development manager for low frequency software solutions . As the article says, EM field simulation is an extremely useful tool in the design and analysis of devices based on the measurement of capacitance to establish the presence and/or position of objects. A touchscreen device is a good example of this and is discussed in this article.

European User Conference 2014 Technical Sessions

For more than 10 years now, CST has been bringing together users based in Europe for an annual conference. The best and brightest from diverse industries come together and share their insights and innovations. It's perhaps no surprise then that when we post about the trends that came out of the conference, the page receives a veritable stampede of hits. We also post most of the technical presentations online and whatever weird, wonderful world of EM design you inhabit, there's most likely a presentation that will interest you. Take a look here for yourself. While you're there, check out the topics and focus sessions for EUC 2015, to be held in April in Darmstadt, Germany.

Multiport Antenna Matching in Optenni Lab - MIMO

Taking third place was this blog post written by Jussi Rahola, managing director of Optenni Ltd. and brains behind Optenni Lab, a software tool for matching circuit design and optimization. The guest post was about the introduction of multiport matching into Optenni Lab. Jussi and colleagues identified two distinct cases for multiport matching, each with their own optimization goals: systems with multiple radiating antennas (e.g. MIMO antennas) where the goal is to maximize transmitted power and minimize the coupling between elements, and systems with both radiating and transmitting elements (e.g. wireless power transfer) where the best efficiency is instead achieved by maximizing the coupling between antennas. In this guest post, Jussi discusses the case of designing the matching for multiple radiating antennas in the same device. The other case was covered in a separate blog entry.

Microstrip Patch Array Design

CST engineers prepared and published this popular application article early in 2014. It explains the design process for a planar microstrip patch array for WLAN frequencies using the circuit and full-wave 3D solvers and optimization tools in CST STUDIO SUITE®. The goal in this case is to design an array with high directivity, low cost and low sidelobes, exhibiting a good impedance matching in the frequency range 5.18 – 5.85 GHz.

Simulation and Measurement: Complementary Design Tools

Winning first place with an impressive number of hits, was this post about the joint Rhode & Schwarz and CST workshop, titled Measurement meets Simulation, held in July. Related and also popular, is this page and webinar presented by CST senior application engineer Vratislav Sokol. The webinar, now available to watch on demand, explored the relationship between simulation, using CST STUDIO SUITE®, and measurement, and explained what each domain is best suited for. In some situations measurement can be difficult to perform while simulation is simpler, and vice versa. You can watch this webinar below.

Monday, January 19, 2015

CST at DesignCon 2015

In less than two weeks DesignCon 2015 is on in Silicon Valley and CST, a platinum sponsor, will be offering demonstrations and a touch of magic there.

One of the world's premier EDA conferences, DesignCon is now in its 20th year and this year will offer more than 100 technical sessions, including four from CST, three keynotes and an exhibition so large you need a map and compass to find your way around it.

EDA simulation and CST STUDIO SUITE 2015

At exhibition stand 627 (see the map), CST engineers will demonstrate the new features for EDA simulation included in soon-to-be-released CST STUDIO SUITE 2015.

EM simulation can be a huge benefit to electronic engineers by allowing them to analyze the performance of virtual prototypes before tape-out. To be effective for the EDA workflow, however, simulation must be fast and accurate and offer a more detailed understanding of the causes of SI/PI and EMC issues than measurement alone can provide.

To meet these requirements, CST STUDIO SUITE 2015 will have the following new features:
  • A new tetrahedral meshing algorithm optimized for printed electronics that for frequency domain simulations of complex packages can reduce the total meshing time seven fold 
  • A Pareto frontier optimization for decoupling capacitors that can significantly improve the PI performance of a PCB, while minimizing fabrication costs.
  • A range of other performance and productivity improvements developed to make the integration of simulation into the EDA workflow easier and more powerful
If you're attending DesignCon 2015, we invite you to visit our stand to see demonstrations of these new features in action. 

A touch of magic

On the exhibition days, January 28 and 29, visitors to the CST stand can watch specialist trade show magician Scott Tokar do his thing. Scott will be astounding and confounding visitors between 12:30pm and 6:00pm on both exhibition days. Check out this YouTube video of Scott at a previous trade show.

Conference papers

CST engineers and customers will  present the following conference papers. Click each to find its date, time and session code.