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simulation for antenna design and placement in vehicles

Simulation for antenna design and placement in vehicles

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Antennas, Propagation and RF technology for Transport and Autonomous Platforms 2017

作者： Rütschlin, Marc Tallini, Davide CST Computer Simulation Technology AG Darmstadt Germany

ISBN: (纸本)9781785616877

A typical high-end car today has AM, FM, DAB and GSM satellite radio, tire-pressure monitoring (TPM), passive entry passive start (PEPS), in-vehicle TV, GPS navigation, Bluetooth, electronic toll collection, and multiple radar systems (e.g. collision avoidance, parking assistance, adaptive cruise control). Next generation vehicles will add LTE, Wi-Fi and additional systems for automated driver assistance. Specialized vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) ad-hoc communication networks are currently some of the most popular fields of research for efficient car information systems. The implication is that engineers have to place an ever-increasing number of wireless systems, each one with its own dedicated antenna(s), in relatively close proximity on the same vehicle. simulation is an important tool for the design of the antennas, but also for making decisions about how to integrate a large range of antennas in and on the vehicle while ensuring that they function correctly and coexist in a compliant way. This talk will discuss the state of the art in how simulation is being used by engineers to make these challenging tasks easier. © 2017 Institution of Engineering and technology. All rights reserved.

关键词： Antenna arrays

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Efrom surface equivalence principle to modular domain decomposition 23rd

Efrom surface equivalence principle to modular domain decomp...

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23rd International Conference on Domain Decomposition Methods, DD23

作者： Muth, Florian Schneider, Hermann Euler, Timo CST-Computer Simulation Technology AG Darmstadt Germany

ISBN: (纸本)9783319523880

For the simulation of complex models and complete systems whose components involve different electromagnetic scales and properties, it is often appropriate to apply domain decomposition methods. Based on the surface equivalence principle, the aim of the presented project is to develop a modular, black box framework for domain decomposition which is capable of assigning any formulation and numerical method to a certain subdomain. In this approach, equivalent surface currents act as interface between the subdomains exchanging boundary data. Here, the focus is on coupling finite element and boundary element frequency domain methods driven by application examples like antenna placement. First results and encountered challenges will be presented. © Springer International Publishing ag 2017.

关键词： Domain decomposition methods

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Compact and Passive Time-Domain Models Including Dispersive Materials Based on Order-Reduction in the Frequency Domain

Compact and Passive Time-Domain Models Including Dispersive ...

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作者： Baltes, Rolf Farle, Ortwin Dyczij-Edlinger, Romanus Electromagnetic Theory Saarland University SaarbrückenD-66123 Germany CST-Computer Simulation Technology AG DarmstadtD-64289 Germany

In this paper, compact time-domain (TD) models featuring materials with frequency-dependent electromagnetic (EM) properties are derived. The considered frequency-dependent material models include multiterm Debye and Lorentz models for the electric permittivity and the magnetic permeability and a multiterm Drude model for the electric conductivity. The TD models are based on finite-element systems in the frequency domain (FD). To render the model compact and computationally efficient, the dimension of the FD system is compressed with the help of projection-based model-order reduction. In contrast to older approaches, the TD transformation is performed on the FD model itself rather than on the transfer function. The result is a state-space representation, which may either be solved by custom time integrators or imported into commercial circuit simulators. The advantages of the new approach include provable passivity of the FD model, provable causality of the TD model, and the ability to reconstruct the transient EM fields. © 2017 IEEE.

关键词： Finite element method

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A Comparison of Two Anatomical Body Models Derived from the Female Visible Human Project Data

A Comparison of Two Anatomical Body Models Derived from the ...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society

作者： Jackson W. Massey Alexander Prokop Ali E. Yilmaz Department of Electrical and Computer Engineering University of Texas at Austin Austin TX CST-Computer Simulation Technology AG Darmstadt Germany

Two electromagnetic human body models independently developed from the same image dataset - the voxel-based AustinWoman and surface-based VHP-Female models - are compared. In addition to contrasting volumes and cross-section images of their tissues, the power absorbed by the two models under plane-wave excitation is also compared. Five different numerical methods are used to compute the absorbed power and to evaluate modeling and computational errors.

关键词： Computational modeling Bones Numerical models Muscles Skin Solid modeling Density measurement

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Silicon Interposer Interconnect Structures Analysis - 3D Full Wave simulations and Measurements

Silicon Interposer Interconnect Structures Analysis - 3D Ful...

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IEEE International Symposium on Electromagnetic Compatibility

作者： Antonio Ciccomancini Scogna Darryl Kostka Matthias Troescher Alexander Steinhardt Robert Trieb Andy Heinig Andreas Henkel Computer Simulation Technology (CST) AG CST of America Fraunhofer IIS/EAS Dresden Germany Rohde und Schwarz Munich Germany

ISBN: (纸本)9781509014439

The goal of this work is to electrically model TSVs and 3D interposer interconnects by means of three dimensional (3D) full wave electromagnetic simulations and a circuit like approach for a very fast simulation. The full wave simulations provide a comprehensive and systematic analysis of various parameters of the structure. The circuit like approach provides an analysis opportunity to determine some practical limits of the length of interconnect structures which can be integrated as design rules during the (silicon) interposer design process. Modeling guidelines for the 3D full wave simulation are provided in order to address two of the main concerns: speed and accuracy. Parametric study is also performed in order to explore the impact of design parameters on the electrical performance.

关键词： S-Parameter circuit approach TSV interposer 3D EM full wave simulation

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Lightning on tree: Modeling a case study in Brasilia, Brazil 13

Lightning on tree: Modeling a case study in Brasilia, Brazil

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13th International Symposium on Lightning Protection, SIPDA 2015

作者： Dasilva, A. Leandro Enjiu, Rodrigo K. Department of Electrical Engineering University of Brasília Brazil Computer Simulation Technology - CST AG Darmstadt Germany

ISBN: (纸本)9781479987542

There are many records of people and animals victims of lightning while under trees in the thunderstorms. However, there are fewer studies that model cases where lightning strikes a tree and the ground current reaches people far from the trees. This paper offers a case study based on a lightning strike to a tree that injured 31 people sheltering in a nearby masonry building, and presents a simulation model of the event that offers insight into the propagation. © 2015 IEEE.

关键词： Forestry

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Computational human model VHP-FEMALE derived from datasets of the national library of medicine

Computational human model VHP-FEMALE derived from datasets o...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Gregory M Noetscher Janakinadh Yanamadala Harshal Tankaria Sara Louie Alexander Prokop Ara Nazarian Sergey N Makarov Electrical and Computer Eng. Dept. Worcester Polytechnic Institute Worcester MA USA ANSYS Inc. Canonsburg PA CST-Computer Simulation Technology AG Darmstadt Germany Center for Advanced Orthopaedic Studies Harvard Med School Boston MA

simulation of the electromagnetic response of the human body relies upon efficient computational models. The objective of this paper is to describe a new platform-independent and computationally-efficient full-body electromagnetic model, the Visible Human Project® (VHP)-Female v.3.0 and to outline its distinct features. We also report model performance results using two leading commercial electromagnetic antenna simulation packages: ANSYS HFSS and cst MICROWAVE STUDIO®.

关键词： Solid modeling Mathematical model Skin Fats Computational modeling Finite element analysis Scalp

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VHP-Female CAD human model family for antenna modeling

VHP-Female CAD human model family for antenna modeling

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Antennas and Propagation Society International Symposium

作者： Gregory M. Noetscher Janakinadh Yanamadala Harshal V. Tankaria Xavier J. Jackson Sergey N. Makarov Sara Louie Alexander Prokop Ara Nazarian NEVA EM LLC Yarmouth Port MA USA ECE Dept. Worcester Polytechnic Inst. Worcester MA USA ANSYS Inc. Canonsburg PA USA CST-Computer Simulation Technology AG Darmstadt Germany Beth Israel Deaconess Medical Ctr. Harvard Medical School Boston MA USA

simulation of the electromagnetic response of the human body relies upon efficient computational models. The objective of this paper is to introduce a new platform-independent and computationally-efficient full-body electromagnetic model family, the Visible Human Project ® (VHP)-Female, and report examples of antenna simulations using two leading commercial electromagnetic antenna simulation packages: ANSYS HFSS and cst MICROWAVE STUDIO®.

关键词： Solid modeling Computational modeling Finite element analysis Biological system modeling Microwave antennas Dipole antennas

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Lightning on tree: Modeling a case study in Brasilia, Brazil

Lightning on tree: Modeling a case study in Brasilia, Brazil

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International Symposium on Lightning Protection (XII SIPDA)

作者： A. Leandro DaSilva Rodrigo K. Enjiu Department of Electrical Engineering University of Brasília Brasilia Brazil Computer Simulation Technology - CST AG Darmstadt Germany

关键词： Lightning Vegetation Buildings Monitoring Biomedical monitoring Computational modeling Injuries

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A case-study to assess compliance with exposure limit values for workers exposed to multiple frequency electromagnetic sources

A case-study to assess compliance with exposure limit values...

引用

European Conference on Antennas and Propagation, EuCAP

作者： Vanni Lopresto Rosanna Pinto Sergio Mancini Edoardo Genovese Marco Renzi Mauro Cerboni ENEA Casaccia Research Center Rome Italy CST - Computer Simulation Technology AG Darmstadt Germany Tecnorad Italia S.p.A. Rome Italy

In the framework of the recent European Directive 2013/35/EU, a case study is presented to assess compliance with exposure limit values (ELVs) for workers exposed to multiple frequency electromagnetic sources. A real site was investigated, where transmitting stations of both broadcasting and wireless communications services are present. Electromagnetic field measurements were performed to characterize the exposure scenario, which was numerically simulated to calculate the absorption of energy in an anthropomorphic voxel model. Finally, compliance with relevant ELVs was assessed in terms of an index of compliance, defined according to an appropriate metric for combined multi-frequency exposure.

关键词： Poles and towers Numerical models Phantoms 3G mobile communication Antennas Digital video broadcasting Computational modeling

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