Applications

This work presents the 3D magnetostatic numerical analysis based on Finite Integration Technique applied to the design of magneto-inductive devices for the Non Destructive Testing (NDT) of ferromagnetic ropes. The problem is characterised by several design aspects and by the high saturation level reached in the device core and in the rope under testing. CST EM STUDIO® was used for the virtual prototyping which entailed the the optimisation of permanent dimensions using 3D non-linear magnetostatic optimisation. Measured versus simulated results are presented. Read full article..

This article is concerned with the application of CST EMS to the design and analysis of a tubular permanent magnet linear generator. Demonstrated is the proposal of a possible application of tubular generator, the analysis of a system definition in order to define a first optimization criteria and 3D electromagnetic simulation based on finite inegration method to carry out a parametric analysis of the machine behavior. This is a summary of the work carried out by Andrea Pirisi, G. Gruosso, Riccardo E. Zich of the Politecnico di Milano, Italy. Read full article..

This paper is based on: "Comparison of electromagnetic field solvers for the 3D analysis of plasmonic nano antennas" by Johannes Hoffmann, Christian Hafner, Patrick Leidenberger, Jan Hesselbarth, Sven Burger, Proc. SPIE Vol. 7390, pp. 73900J-73900J-11. The Field Distribution inside a 1 nm wide gap between two 80 nm diameter Gold spheres is calculated and compared to a semi analytical reference solution published in the paper. Both general purpose solvers of CST MICROWAVE STUDIO® are used. The simulation results agree closely with the reference solution. Read full article..

The combination of non-linear materials and eddy currents leads to a problem which cannot be solved with a steady-state eddy current solver. A transient solver is required and and inherently includes the feature that arbitrary time signals can be used for the excitation. The CST EM STUDIO® (CST EMS) transient solver allows such a simulation to be carried out. In this case, a Gas insulated Bus under short circuit conditions is investigated. The forces and losses on the bus bars can be calculated as a function of time. Read full article..

Metallic and dielectric cavity resonator filters continue to play an important role in the wireless infrastructure market. Particularly due to an increasing need co-site and co-locate several old and new standards performance requirements are getting more stringent. This is especially true for filter guard band gaps. One of the contributors to the filter bandwidth margin is the temperature drift allowance. This allowance is to allow for the filter response change due to (i) material thermal expansion/contraction, and (ii) change in the dielectric constant. A very useful technique has previously been developed to estimate the coaxial resonator temperature drift. This technique has extensively been verified in practice. However, its main limitation is that it relies on closed-form mathematical expressions, thus being applicable only to the canonical structures. In this paper we first reproduce in CST MICROWAVE STUDIO® the expected temperature drift results for commonly-used filter resonators. We then go on to show that this new methodology can be applied to structures of arbitrary shape, with an arbitrary number of elements, and with arbitrary material composition. Finally, we consider temperature drift for structures where dielectrics as well as metals change their properties at different operating temperatures. Read full article..

In this presentation CST MICROWAE STUDIO was used for plasma uniformity prediction through the E/H-field and power loss distribution. The plasma source S-parameter are analysed and the impedance-matching-network for different antenna is designed. Finally a high-frequency & large-area plasma source is analysed. Dr. Hyun-su Jun, KAIST, Low-temperature plasma lab. Presentation on the Korean CST User Group Meeting 2009. Read full article..