一维菲涅尔区相位修正平面反射器的聚焦特性研究
RESEARCH ON THE CAUSTIC CHARACTERISTICS OF ONE DIMENSIONAL FRESNEL ZONE PHASE CORRECTED PLATE REFLECTOR
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摘要: 在平面上沿某一个方向进行1/P波长的相位修正,可以构成一维菲涅尔区相位修正平面。由此而得到的平面反射器可作为抛物柱面反射器的替代物来构成扇形波束天线。本文用物理光学法分析了平面波入射时该结构的聚焦特性,并给出了一组焦散区场分布的数值计算结果。Abstract: One dimensional Fresnel zone phase corrected plate (1-DFP) can be made by a 1/P wavelength phase correcting along one dimension upon the plate. When it is used as a reflector, it gives an alternative to parabolic cylinder reflector in application on fan-beam antenna. In this paper, Physical Optics (PO) is used in analyzing the caustic characteristics of 1-DFP reflector with plane wave illumination. Numerical results of a series of fields in caustic are also presented.
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