arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1001.4205physics.opticsphysics.class-phphysics.comp-ph
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二维小半椭圆介质透镜天线分析:边界积分方程与几何和物理光学

Small hemielliptic dielectric lens antenna analysis in 2-D: boundary integral equations versus geometrical and physical optics

A. V. Boriskin, G. Godi, R. Sauleau, A. I. Nosich

摘要:

我们评估的准确性和相关性的数值算法的基础上的原则,几何光学(GO)和物理光学(PO)在分析的减小尺寸的均匀介质透镜容易表现为开放式谐振器。作为一个基准的解决方案,我们使用的Muller边界积分方程离散的三角Galerkin格式,有保证和快速收敛以及可控的精度。透镜横截面被选择为典型的实际应用,即扩展的半椭圆,其偏心率满足GO聚焦条件。该分析涉及由Rexolite、熔融石英和硅制成的均匀透镜,其尺寸在自由空间中在3到20个波长之间变化。我们考虑二维情况下,E和H偏振平面波垂直和斜入射,并比较近场的特性。

英文摘要:

We assess the accuracy and relevance of the numerical algorithms based on the principles of Geometrical Optics (GO) and Physical Optics (PO) in the analysis of reduced-size homogeneous dielectric lenses prone to behave as open resonators. As a benchmark solution, we use the Muller boundary integral equations discretized with trigonometric Galerkin scheme that has guaranteed and fast convergence as well as controllable accuracy. The lens cross-section is chosen typical for practical applications, namely an extended hemiellipse whose eccentricity satisfies the GO focusing condition. The analysis concerns homogeneous lenses made of rexolite, fused quartz, and silicon with the size varying between 3 and 20 wavelengths in free space. We consider the 2-D case with both E- and H-polarized plane waves under normal and oblique incidence, and compare characteristics of the near fields.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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