{"title":"Mechanically Machined Microwave Multi-Layer Antireflective Coating of a Dielectric","authors":"A. V. Ryabov, D. I. Sobolev, M. Yu. Shmelev","doi":"10.1007/s11141-023-10263-x","DOIUrl":null,"url":null,"abstract":"<div><div><p>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.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiophysics and Quantum Electronics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11141-023-10263-x","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
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.
期刊介绍：
Radiophysics and Quantum Electronics contains the most recent and best Russian research on topics such as:
Radio astronomy;
Plasma astrophysics;
Ionospheric, atmospheric and oceanic physics;
Radiowave propagation;
Quantum radiophysics;
Pphysics of oscillations and waves;
Physics of plasmas;
Statistical radiophysics;
Electrodynamics;
Vacuum and plasma electronics;
Acoustics;
Solid-state electronics.
Radiophysics and Quantum Electronics is a translation of the Russian journal Izvestiya VUZ. Radiofizika, published by the Radiophysical Research Institute and N.I. Lobachevsky State University at Nizhnii Novgorod, Russia. The Russian volume-year is published in English beginning in April.
All articles are peer-reviewed.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
