[应用]CST官方应用文章汇总（英文）（2012年3月9日更新）

最新的这几篇文章都是5th European User Group Meeting Technical Sessions里的。 B(eC|:w[z  
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Visualize, identify and optimize with MWS @ Hirschmann '5f6 M^}|2  
Winfried Krämer, Hirschmann Automation and Control GmbH Hirschmann Automation and Control is one of the leading providers of industrial Ethernet at bitrates up to 10 Gigabit per second. Using CST MWS we have examined signal paths regarding signal quality, crosstalk and EMC related issues and have identified influences of vias, stackup and other parameters affecting the quality of our high speed interfaces. As the measurement of impedance of critical pins in the power delivery system is challenging, a simulation allows us to evaluate the position dependent information. Furthermore, we also succeeded in improving housing design in RF-matters, tag and optimize the “sites of crime”. Using the capabilities of a simulation helps us to fit the “first shot” layout into a demanding environment and also to optimize an existing layout to ensure performance at growing requirements to the designs. Additionally, it gives us a cost and time effective possibility to answer the “what if” – questions and visualize the points of interest helps to generate reliable constrains. w%3*T#tp  
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VBA Macro for the construction of an EM 3D model of a tyre and part of the vehicle （使用VBA宏对轮胎和汽车局部三维电磁建模） 0gIJ&h6*f  
Guillermo Vietti, Politecnico di Torino A VBA script has been developed, controlling all CST STUDIO SUITE™ tools to represent all mechanical elements in the space around the tire in a vehicle, incorporating this complex geometry in a parametric way. One of the applications of this script is for the study of EM field propagation inside and outside the tire. The same script is capable of choosing the appropriate mesh parameters to optimize the simulation time, with the radiating element inside the tire. It is capable also to set field monitors at all frequencies and to run the simulation automatically. The tire geometry is mainly designed with azimuthally variable tire sections, taking in account the deformation of the tire. The main advantages of designing a parametric geometry controlled by a VBA script are the possibility of: -> adapting the model to different vehicles and tires. -> studying the EM propagation in the whole 3D space for different orientations of the tire and angular positions of the radiating element, without the need of re-designing the structure. -> changing the deformation of the tire near the ground surface due to the load of the vehicle, taking into account the asymmetries of the model. The EM effect of this deformation on the propagation depends on the position of antenna. -> running many iterative simulations, changing iteration variables simply introducing the VBA script inside a cycle “for … next”. 'joc8o sS  
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谢谢楼主！！！！

好啊，學習一下，多謝 .`5BgX7W  

        

The use of CST Microwave Studio in the Design of an X-Band Circularly Polarised Splashplate Antenna "tgaFtC=w  
Richard Roberts, Astrium Ltd This presentation describes how CST Microwave Studio (MWS) has been used in conjunction with POS 5 and GRASP 8 to design an X-Band circularly polarised Splashplate Antenna. The antenna essentially consists of a centre fed reflector (17 wavelengths in diameter), the Splashplate feed (~2 wavelengths in diameter), and a septum polariser to allow the Tx and Rx bands to operate in opposite polarisations. A significant factor in the design is that a short circuit had to be assumed at the other port of the septum polariser meaning that the return loss of the Splashplate feed and the reflector were critical to the axial ratio performance. CST MWS enabled this aspect of the design to be modelled and analysed using the T-solver. Comparison of the measured and predicted antenna performance has validated the design process. Although a compliant performance has been achieved, it is evident that some modelling improvements could be sought in order to get a better convergence between prediction and measurement.
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Long Range Connector Via Coupling Effects for High Speed Signals eD0Rv0BV^  
Thomas-Michael Winkel, Roland Frech, IBM Entwicklungs GmbH Thomas Gneiting, AdMOS GmbH The interface between a multi pin connector and the printed circuit board is a critical part of the signal path in high speed digital systems like mainframe computers. Long range via coupling effects are analysed for connectors with a huge signal count and high speed signals using CST Microwave Studio simulations. A realistic cross section of the printed circuit board with a mixture of ground and voltage layers have been taken into account. It was possible to understand the reason for this behaviour by analyzing the field distributions during the signal propagation inside the printed circuit board. A further important result was the calculation of the magnitude of the distortions to judge their impact on the signal integrity of a complete system. Finally, the long range crosstalk effect was verified with time domain measurements on a specially designed test card system. H1PW/AW  
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先顶一下，看看

看起来不错，多谢

非常好，谢谢楼主！！学习中

hao dong东，看看了

学习一下