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首页> 外文期刊>Radiophysics and quantum electronics >An Efficient Method for Calculating the Characteristics of the Integrated Lens Antennas on the Basis of the Geometrical and Physical Optics Approximations
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An Efficient Method for Calculating the Characteristics of the Integrated Lens Antennas on the Basis of the Geometrical and Physical Optics Approximations

机译：基于几何和物理光学近似计算积分透镜天线特性的有效方法

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摘要

We develop a combined method for calculating the characteristics of the integrated lens antennas for millimeter-wave wireless local radio-communication systems on the basis of the geometrical and physical optics approximations. The method is based on the concepts of geometrical optics for calculating the electromagnetic-field distribution on the lens surface (with allowance for multiple internal re-reflections) and physical optics for determining the antenna-radiated fields in the Fraunhofer zone. Using the developed combined method, we study various integrated lens antennas on the basis of the data on the used-lens shape and material and the primary-feed radiation model, which is specified analytically or by computer simulation. Optimal values of the cylindrical-extension length, which ensure the maximum antenna directivity equal to 19.1 and 23.8 dBi for the greater and smaller lenses, respectively, are obtained for the hemispherical quartz-glass lenses having the cylindrical extensions with radii of 7.5 and 12.5 mm. In this case, the scanning-angle range of the considered antennas is greater than +/- 20A degrees for an admissible 2-dB decrease in the directivity of the deflected beam. The calculation results obtained using the developed method are confirmed by the experimental studies performed for the prototypes of the integrated quartz-glass lens antennas within the framework of this research.
机译：我们基于几何和物理光学近似，开发了一种用于计算毫米波无线本地无线电通信系统的集成透镜天线特性的组合方法。该方法基于用于计算透镜表面上电磁场分布（允许多次内部反射）的几何光学和用于确定Fraunhofer区域中天线辐射场的物理光学的概念。使用开发的组合方法，我们根据使用过的透镜形状和材料以及初次馈电辐射模型（通过解析或通过计算机模拟指定）的数据来研究各种集成透镜天线。对于具有7.5和12.5 mm半径的圆柱延伸的半球形石英玻璃透镜，可以获得圆柱延伸长度的最优值，该最优值分别确保较大和较小透镜的最大天线方向性分别等于19.1和23.8 dBi。 。在这种情况下，考虑到天线的扫描角度范围大于+/- 20A度，以使偏转波束的方向性允许降低2 dB。在本研究框架内，对集成石英玻璃透镜天线的原型进行的实验研究证实了使用改进方法获得的计算结果。

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