Interaction of Electromagnetic Fields with Rough Surfaces

本研究项目的范围是完成申请者开发的梯度模型。该场论模型描述了粗糙导体表面对高频波传播的影响。应创建一种远远超出现有技术水平的新描述，包括不同于正态分布的表面轮廓、表面可能的相关长度的影响以及沿场偏振方向和跨场偏振方向的踏面沟槽的影响。此外，应建立场理论上合理的模型与激光共聚焦显微镜等表面测量实践之间的关联，并导出测量参数。此外，应利用该模型创建新的表面分析的计量通道。这将使得能够从测量的表面阻抗中推导出相应频率范围内的相关表面属性。

The scope of this research project is to complete the Gradient Model which was developed by the applicant. This field theoretical model describes the impact of rough conductor surfaces on wave propagation at high frequencies. A new description going far beyond the state of the art shall be created, that includes other than normally distributed surface profiles, the impact from possible correlation lengths of the surface as well as impact from tread grooves in directions along and across the polarization of the field.Additionally, the correlation between the field theoretically justified model and the practices of surface metrology like laser confocal microscopy shall be established and measurement parameters derived, respectively.Furthermore, the model shall be utilized to create a new metrological access to surface analysis. This will enable the derivation of the relevant surface properties in the corresponding frequency range from a measured surface impedance.