Fast dipole approximation to analyze the scattering and radiation of arbitrary wire and slot configurations in cavities and free space

快速偶极近似分析空腔和自由空间中任意线和槽配置的散射和辐射

• 批准号: 453810896
• 负责人: Professor Dr.-Ing. Ralf Vick
• 金额: --
• 依托单位: Lehrstuhl für Elektromagnetische Verträglichkeit (EMV)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/453810896?language=en
• 关键词: Fast; dipole; approximation; analyze; scattering

Electronic devices have metallic housings to protect the sensitive components from external influences and to ensure mechanical stability. At the same time, such housings shield the inner and outer area from electromagnetic interactions, since the corresponding waves are reflected on the conductive surface or are damped inside the shield material. However, for technical reasons, most housings have openings, e. g. ventilation slots, through which the two regions are electromagnetically coupled. The investigation of these coupling properties is of increasing importance for the assessment of the immunity to interference and the emission of a device, since the intensity of the coupling will continue to increase in the future due to rising clock frequencies in modern electronic devices. This leads to electromagnetic fields at ever higher frequencies, which interact more and more with the apertures, which must then be considered to be electrically large.Currently numerical methods are used to describe this interaction. There the problem is converted into mathematical models, where a physical analysis of the interaction processes is not possible and which can only contribute to a general understanding to a very limited extent. In addition, metallic cavities are highly resonant systems, which leads to problems in solving the mathematical models with regard to convergence and a very large number of unknowns.A largely analytical description of the scattering of electromagnetic waves at electrically large apertures is therefore the subject of this project. This approach allows1. a physical interpretation of the interaction processes involved,2. a very fast calculation of the scattered fields compared to previous methods,3. and gaining a general understanding of the scattering process.A new method for describing the scattering of electromagnetic waves on straight, thin conductors and slot-shaped apertures is to be generalized in order to analytically describe the scattering processes on arbitrarily shaped one-dimensional structures. For this purpose, the overall problem is separated into the near and far interaction of the sources and fields using the analytical regularization method, in order to find analytical solutions using the characteristic properties of the parts. It is expected that the different parts of the solution correspond to different scattering processes and thus contribute to a deeper understanding of the overall problem, as has already been demonstrated by the applicant for straight structures and published in renowned journals. The result should be a new method for describing the scattering on arbitrarily shaped one-dimensional structures, in which the interaction is calculated analytically and therefore very fast, while being validated using established numerical methods and measurements.

电子设备具有金属外壳，以保护敏感部件不受外部影响，并确保机械稳定性。同时，这样的外壳保护内部和外部区域免受电磁相互作用，因为相应的波在导电表面上反射或在屏蔽材料内部被抑制。然而，由于技术原因，大多数外壳都有开口，例如通风槽，这两个区域通过这些开口电磁耦合。对这些耦合特性的研究对于评估器件的抗干扰性和发射越来越重要，因为由于现代电子设备中时钟频率的上升，未来耦合的强度将继续增加。这导致了频率越来越高的电磁场，它与孔洞的相互作用越来越多，然后必须被认为是电大的。目前用数值方法来描述这种相互作用。在那里，问题被转化为数学模型，其中对相互作用过程的物理分析是不可能的，并且只能在非常有限的程度上有助于一般理解。此外，金属空腔是高度共振的系统，这导致在求解数学模型时存在关于收敛和大量未知数的问题。因此，对电大口径电磁波的散射进行大量的解析描述是本项目的主题。这种方法允许1。对相互作用过程的物理解释，2.与以前的方法相比，对散射场的快速计算，3.对散射过程有了大致的了解.为了解析地描述任意形状的一维结构上的散射过程，本文推广了一种描述电磁波在直、细导体和槽形孔洞上的散射的新方法.为此，使用解析正则化方法将整个问题分离为源和场的近距离和远距离相互作用，以便利用部件的特征属性找到解析解。预计解决方案的不同部分对应于不同的分散过程，从而有助于更深入地了解整个问题，正如申请直结构的申请人已经证明的那样，并发表在著名的期刊上。其结果应该是一种描述任意形状的一维结构上的散射的新方法，其中相互作用是以解析的方式计算的，因此非常快，同时使用已建立的数值方法和测量来验证。