Friday, October 4, 2013

3D Electromagnetic Simulation Presentations at EuMW

If you happen to be heading to this year’s European Microwave Week (EuMW) in Nuremberg, Germany from Oct 6-11, this will be a great opportunity for you to see what’s new at CST. Dubbed as Europe’s “premier microwave, RF, wireless and radar event” – we definitely have a lot planned for the show, including a full schedule of electromagnetic (EM) simulation presentations at CST booth no. 103.

So here’s what you can expect from CST at EuMW:
The latest version of CST STUDIO SUITE® will be previewed at the show with new features to be demonstrated live at our booth on each day of the exhibition between 10:30 and 11:30. CST STUDIO SUITE 2014 expands on the capabilities of previous releases by further improving usability, by adding modeling features as well as streamlining workflows with CAD tools. Particular attention has been paid to model set-up, meshing and System Assembly and Modeling (SAM) workflows, especially for multiphysics and PCB simulation. Read our press release to get full details of the new features. 
  • 3D Electromagnetic Simulation Presentations
For the duration of the exhibition (Oct. 8-10), we will be presenting a range of demos and application and simulation technology talks. On the agenda are talks on high intensity radiated field (HIRF) testing, cosite interference analysis, Bio-EM, high performance computing techniques, antenna design, and EMI/EMC simulation. Check out the full stand schedule and be sure you don’t miss out on the talk that interests you.
  • Third-party Products and Networking Opportunities
We will be showcasing products from Delcross Technologies, and hosting talks and live demonstrations from Magus (Pty) Ltd, Optenni Ltd, and Transim Technology.
In collaboration with CST, Optenni Ltd have announced the availability of design tools for MIMO antenna optimization and Magus (Pty) Ltd showcase the upcoming availability of a antenna array and feed network modeling feature. As usual the designs can be exported to CST MICROWAVE STUDIO® for full 3D analysis and optimization. Representatives from Optenni Ltd and Magus (Pty) Ltd will be spending time at our booth – if you would like to organize a meeting, please contact us at marketing (at)
Have a look at our stand schedule and the official Magus (Pty) Ltd and Optenni Ltd press releases.
  • Booth Party
This year our booth party will take place on Tuesday October 8 from 16:30 to close of show. You can join us for drinks and snacks and get the chance to speak to other EM simulation experts in a relaxed environment. 
  • Industrial Career Platform
On Tuesday Oct 8 and Thursday Oct 10 we will have a table at the Industrial Career Platform so you can drop by and discuss opportunities available in the field of EM simulation.
And of course, you can enjoy the CST-sponsored cyber café in the exhibition hall, and for delegates, the WiFi access in the conference area.

See you at the show!  

Thursday, October 3, 2013

A Typical Antenna Design Flow using Antenna Magus and CST STUDIO SUITE

Guest post by Thomas Sickel, Lead Antenna Design Engineer of Magus (Pty) Ltd.

Antenna Magus is an antenna synthesis tool, developed to help engineers design efficient RF devices. Its database, currently consisting of 225 antennas, can be explored and searched to find the optimal antenna topology for the given problem. This topology can then be designed and tuned to meet the system requirements, and subsequently exported as a fully parametric, ready-to-run 3D model compatible with CST MICROWAVE STUDIO® (CST MWS), allowing Antenna Magus to integrate seamlessly in the design workflow.

A basic performance analysis is available inside Antenna Magus, but a full 3D simulation is often necessary to obtain a more complete and more accurate solution. This is especially useful in cases where multiple devices require simultaneous simulation in an assembled, compound device. While CST DESIGN STUDIO™ (CST DS) may be used to perform a linear analysis on such a system, the effects of the more complex electromagnetic interactions between the various components will only become apparent in a full 3D simulation of the assembled device in CST MWS.

The example illustrated here is a combined GSM and WLAN monitoring system, covering a frequency range between 698 MHz and 5.855 GHz. Using Antenna Magus, a suitable antenna element is found to be the circularly polarized, UWB, absorber-lined cavity-backed Archimedes spiral antenna, and the coax-to-parallel wire transition is found to be a suitable transition / balun used to feed the spiral. The transition is designed for a number of electrical and mechanical specifications. An impedance match between the 50 Ω input and the 188 Ω spiral resistance is required, and the model needs to comply with certain manufacturing restrictions, including dielectric properties and an outer diameter requirement to match an SMA connector. Some commonly used RF coaxial connectors, such as an SMA 2 hole female panel mount with extended PTFE used here, are also available in Antenna Magus.

Once all the devices have been exported from Antenna Magus, they can be combined in CST DS for a linear cascaded analysis or in CST MWS for a full 3D simulation. The figure below shows a good agreement between the linear solution (red) and the full wave solution (green). This indicates that in this particular instance, the interaction between devices was negligible and as a first-order approach, the compound structure may be successfully analyzed using the substantially quicker linear solver.

System Assembly and Modeling (SAM) in CST STUDIO SUITE® could be used to optimize and analyze the structure further, and allow the engineer to include steps such as thermal analysis to investigate the heat dissipation of the absorbing layers inside the cavity. This means that a broad multiphysics analysis of the entire system can be carried out using only Antenna Magus and CST STUDIO SUITE.