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Optimization in Electromagnetic Design

By integrating optimizers in its EM simulation tools, CST streamlines the development process.

CST

The potential applications for optimization in electrical engineering are plentiful. Tuning filters and antennas, placing decoupling capacitors, maximizing shielding efficiency, improving connector performance, calculating useful input signals, increasing manufacturing yield; these are all tasks in which optimization is invaluable.

CST knows that engineers want a palette of powerful, versatile optimization tools at their disposal, but equally importantly, they want to be able to use these tools as part of their familiar workflow.

CST STUDIO SUITE®, CST’s flagship product, comprises a range of electromagnetic solver technologies, variously suitable for high-frequency, low-frequency, static, transient, charged particle and multiphysics problems. To make it easier for designers to supplement the simulation process with optimization, CST embedded both local and global optimization tools into the foundations of their software.

CSTLocal optimizers are suitable for problems where the initial values are reasonably close to the optimum, and offer quick performance at the risk of finding only a local optimum. The local optimizers provided by CST include Interpolated Quasi Newton, Nelder-Mead Simplex Algorithm, and Trust Region Framework. The latter can use sensitivity information — an estimation of how the structure will behave under small geometric changes — to speed up the optimization process further.

Global optimizers on the other hand search the entire parameter space to find the optimum. This is a somewhat slower process, although the ability to distribute simulations across a cluster means that these optimizations can be sped up significantly. CST offers Genetic, Particle Swarm and CMA-ES global optimizers, each well suited for certain applications.

Because these tools are a fundamental part of CST STUDIO SUITE, they are compatible with all solver types and there is no need to set up complex links between simulation tool and optimizer. Geometries, material properties and waveforms can all be optimized according to goals drawn from numerous different types of result data, allowing engineers to design, simulate and tune their devices in a single workspace.

About CST

CST develops and markets high-performance software for the simulation of electromagnetic fields in all frequency bands. Our advanced simulation solutions help companies increase profitability and engineers to minimize costs by reducing the design risk and improving the overall performance of devices, especially for new or cutting-edge products.

Contact Info:

Computer Simulation Technology AG HQ: Darmstadt, Germany
For other locations in the Americas, Asia and Europe, please check the CST website at www.cst.com/Locations.

For more information visit:
www.cst.com/optimization

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