Frequency reconfigurable antenna array modelling based on MoM-GEC method for RFID, WiMax and WLAN applications

IF 1.2 4区工程技术 Q4 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Analog Integrated Circuits and Signal Processing Pub Date : 2024-02-03 DOI:10.1007/s10470-023-02244-x

Heithem Helali, Mourad Aidi, Taoufik Aguili

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Abstract

Technology is advancing daily, and it has impacted almost every aspect of our lives. We show that growth in the number of miniaturized communications systems that are covering different wireless services can achieve a wide frequency range. The present work aims to propose a new rigorous formulation to model a reconfigurable array system used for different wireless applications. The studied structure consists of a reconfigurable antenna array composed of parallel microstrip antennas excited by localized voltage sources and commanded by located PIN diodes. Diodes are used to adjust the length of the radiating element in order to shift the resonant frequency. The proposed formulation consists to combine the moment method and generalized equivalent circuit’s method (MoM-GEC) to model the antenna array. The PIN diode is considered in the mathematical formulation by an impedance surface model. The input impedance, the reflection parameter (\({S}_{11}\)) and the current distribution density obtained with this method are presented and discussed. The results were in close agreement with those obtained by software simulation. The obtained results offer the possibility to generate various modes governed by a decision tree. Thus, these modes are related to different resonant frequencies suitable for RFID, WiMax and WLAN applications with a large bandwidth reaching 526 MHz.

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基于 MoM-GEC 方法的频率可重构天线阵列建模，适用于 RFID、WiMax 和 WLAN 应用

科技日新月异，几乎影响到我们生活的方方面面。我们的研究表明，覆盖不同无线服务的微型通信系统数量的增长可以实现宽频率范围。本研究旨在提出一种新的严格表述方法，为用于不同无线应用的可重构阵列系统建模。所研究的结构包括一个可重构天线阵列，由局部电压源激励的平行微带天线和定位 PIN 二极管指令组成。二极管用于调整辐射元件的长度，以移动谐振频率。建议的公式包括结合矩量法和广义等效电路法（MoM-GEC）来建立天线阵列模型。在数学公式中，PIN 二极管是通过阻抗面模型来考虑的。本文介绍并讨论了用这种方法得到的输入阻抗、反射参数（\({S}_{11}\)）和电流分布密度。结果与软件模拟得到的结果非常一致。获得的结果提供了生成由决策树控制的各种模式的可能性。因此，这些模式与不同的谐振频率有关，适合 RFID、WiMax 和 WLAN 应用，带宽高达 526 MHz。

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来源期刊

Analog Integrated Circuits and Signal Processing 工程技术-工程：电子与电气

CiteScore

0.30

自引率

7.10%

发文量

141

审稿时长

7.3 months

期刊介绍： Analog Integrated Circuits and Signal Processing is an archival peer reviewed journal dedicated to the design and application of analog, radio frequency (RF), and mixed signal integrated circuits (ICs) as well as signal processing circuits and systems. It features both new research results and tutorial views and reflects the large volume of cutting-edge research activity in the worldwide field today. A partial list of topics includes analog and mixed signal interface circuits and systems; analog and RFIC design; data converters; active-RC, switched-capacitor, and continuous-time integrated filters; mixed analog/digital VLSI systems; wireless radio transceivers; clock and data recovery circuits; and high speed optoelectronic circuits and systems.