无线通信系统中多堆叠介质谐振器天线及其等效R-L-C电路建模分析

IF 1.9 Q2 MATHEMATICS, INTERDISCIPLINARY APPLICATIONS Mathematical & Computational Applications Pub Date : 2022-12-29 DOI:10.3390/mca28010004
Ram Krishna, A. Imoize, R. Yaduvanshi, Harendra Singh, A. Rana, S. Pani
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引用次数: 4

摘要

介质谐振器天线(DRA)可以建模为由电阻器(R)、电感器(L)和电容器(C)组成的电网的串联和并联组合,以解决天线适用于新兴无线通信系统中更高频率范围应用的特殊挑战。本文提出了一种多层DRA结构。通过推导基阶和高阶谐振模式的动态阻抗、输入阻抗、导纳、带宽和质量因子的数学表达式,分析了DRA的性能和特性。具体而言,在MATLAB和高频结构模拟器(HFSS)中分析了投影多堆叠DRA的性能。总的来说,结果表明,衬底介电常数的变化,如高和低,可能分别增加和减少质量因子。特别是,阻抗,辐射场和功率流已经证明了使用所提出的多堆叠电路网络的R, L和C组件加上一个合适的变压器。总体而言,所提出的多堆叠DRA网络的质量因子和选择性得到了提高,带宽也得到了合理的降低。多堆叠DRA网络将在射频无线通信系统中找到有用的应用。此外,为了提高多层叠DRA的阻抗,提出了多层叠DRA的接地面技术,包括槽、双段和堆叠。与现有模型相比,该多层叠DRA在灵活性更好、增益适中、尺寸紧凑、带宽、质量因子、谐振频率、谐振频率处的频率阻抗以及太赫兹频率范围内的辐射方向图等方面的性能提高了10%。
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Analysis of Multi-Stacked Dielectric Resonator Antenna with Its Equivalent R-L-C Circuit Modeling for Wireless Communication Systems
The dielectric resonator antenna (DRA) can be modeled as a series and parallel combination of electrical networks consisting of a resistor (R), inductor (L), and capacitor (C) to address peculiar challenges in antennas suitable for application in emerging wireless communication systems for higher frequency range. In this paper, a multi-stacked DRA has been proposed. The performance and characteristic features of the DRA have been analyzed by deriving the mathematical formulations for dynamic impedance, input impedance, admittance, bandwidth, and quality factor for fundamental and high-order resonant modes. Specifically, the performance of the projected multi-stacked DRA was analyzed in MATLAB and a high-frequency structure simulator (HFSS). Generally, results indicate that variation in the permittivity of substrates, such as high and low, can potentially increase and decrease the quality factor, respectively. In particular, the impedance, radiation fields and power flow have been demonstrated using the proposed multi-stacked electrical network of R, L, and C components coupled with a suitable transformer. Overall, the proposed multi-stacked DRA network shows an improved quality factor and selectivity, and bandwidth is reduced reasonably. The multi-stacked DRA network would find useful applications in radio frequency wireless communication systems. Additionally, for enhancing the impedance, BW of DRA a multi-stacked DRA is proposed by the use of ground-plane techniques with slots, dual-segment, and stacked DRA. The performance of multi-stacked DRA is improved by a factor of 10% as compared to existing models in terms of better flexibility, moderate gain, compact size, bandwidth, quality factor, resonant frequency, frequency impedance at the resonance frequency, and the radiation pattern with Terahertz frequency range.
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来源期刊
Mathematical & Computational Applications
Mathematical & Computational Applications MATHEMATICS, INTERDISCIPLINARY APPLICATIONS-
自引率
10.50%
发文量
86
审稿时长
12 weeks
期刊介绍: Mathematical and Computational Applications (MCA) is devoted to original research in the field of engineering, natural sciences or social sciences where mathematical and/or computational techniques are necessary for solving specific problems. The aim of the journal is to provide a medium by which a wide range of experience can be exchanged among researchers from diverse fields such as engineering (electrical, mechanical, civil, industrial, aeronautical, nuclear etc.), natural sciences (physics, mathematics, chemistry, biology etc.) or social sciences (administrative sciences, economics, political sciences etc.). The papers may be theoretical where mathematics is used in a nontrivial way or computational or combination of both. Each paper submitted will be reviewed and only papers of highest quality that contain original ideas and research will be published. Papers containing only experimental techniques and abstract mathematics without any sign of application are discouraged.
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