Accuracy and Agreement of FDTD, FEM and Wave Matrix Methods for the Electromagnetic Simulation of Waveguide Polarizers

IF 0.8 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Advanced Electromagnetics Pub Date : 2022-08-07 DOI:10.7716/aem.v11i3.1694

A. Bulashenko, S. Piltyay, A. Polishchuk, O. Bulashenko, H. Kushnir, I. Zabegalov

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引用次数: 1

Abstract

Waveguide devices of polarization processing are key elements of modern dual-polarized antenna systems. Such antenna systems carry out polarization transformation and separation of signals with orthogonal polarizations in satellite communications and radar appliances. Well-known electrodynamic methods are used to simulate performance of such devices. This paper investigates the accuracy and mutual matching of wave matrix method with FDTD and FEM. The wave matrix method is based on the theory of scattering and transmission matrices. The main electromagnetic characteristics of a polarizer were obtained through the elements of these matrices. The main characteristics of a polarizer were compared. They include phase difference of orthogonal polarizations, level of voltage standing wave, ellipticity coefficient and level of cross-polarization isolation. Comparison of electromagnetic characteristics was carried out at the example of a waveguide iris polarizer for the operating frequency range from 13.0 to 14.4 GHz. In addition, the process of optimization of electromagnetic characteristics was carried out by changing the geometric dimensions of a polarizer. Calculated by different theoretical methods characteristics were compared and analyzed. Results, which were obtained by considered methods, are in good agreement

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FDTD、FEM和波阵方法在波导偏振器电磁模拟中的准确性和一致性

极化处理波导器件是现代双极化天线系统的关键元件。这种天线系统在卫星通信和雷达设备中执行具有正交极化的信号的极化变换和分离。众所周知的电动方法被用来模拟这种装置的性能。本文研究了波矩阵法与FDTD和FEM的精确性和相互匹配性。波矩阵法是以散射矩阵和透射矩阵理论为基础的。通过这些矩阵的元素，得到了偏振器的主要电磁特性。比较了偏振器的主要特性。它们包括正交极化的相位差、电压驻波的电平、椭圆率系数和交叉极化隔离的电平。在13.0至14.4GHz的工作频率范围内，以波导虹膜偏振器为例进行电磁特性的比较。此外，还通过改变偏振器的几何尺寸来进行电磁特性的优化过程。对不同理论计算方法的特点进行了比较分析。经过深思熟虑的方法得到的结果是一致的

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来源期刊

Advanced Electromagnetics ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

2.40

自引率

12.50%

发文量

审稿时长

10 weeks

期刊介绍： Advanced Electromagnetics, is electronic peer-reviewed open access journal that publishes original research articles as well as review articles in all areas of electromagnetic science and engineering. The aim of the journal is to become a premier open access source of high quality research that spans the entire broad field of electromagnetics from classic to quantum electrodynamics.