Mechanically Machined Microwave Multi-Layer Antireflective Coating of a Dielectric

被引:0
|
作者
Ryabov, A. V. [1 ]
Sobolev, D. I. [1 ]
Shmelev, M. Yu [1 ]
机构
[1] Russian Acad Sci, Inst Appl Phys, Moscow, Russia
关键词
DESIGN;
D O I
10.1007/s11141-023-10263-x
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We present theoretical and experimental results on mechanically machined multilayer antireflective coating of a dielectric plate. The microwave ouptut window made of fluoroplast with the refractive index n = 1.41, was studied experimentally. Holes of two different diameters were drilled in a honeycomb pattern on the surface of the dielectric to different depths in such a way that two thin quarter-wave layers were formed. The effective dielectric permittivity of the obtained layers with cylindrical inhomogeneities was calculated by the Maxwell-Garnett method. The parameters of the layers were chosen according to the Chebyshev method. This allowed us to achieve a reflection coefficient of -30 dB in the frequency range 65-100 GHz. The experimental results were compared with the theoretical calculation and the numerical analysis performed via the multiple-reflection method.
引用
收藏
页码:855 / 861
页数:7
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