摘要
传统微波暗室造价高昂、占地面积大,一旦建成便无法移动,限制了其在实际工程场景的应用。针对波长尺度微型微波暗室的研究对通信、微波系统等领域的天线设计与性能分析至关重要。文中基于无源人工媒质,构造了厚度为0.636 mm,可同时工作在5.1 GHz和9.0 GHz的可共形双频全向无反射电磁波吸收表面,并进一步基于COMSOL构建了直径为34.38 cm的半封闭圆柱形微型微波暗室。在两个频率下的全波仿真结果验证了所构造双频电磁波吸收单元的有效性,通过计算获得的暗室内部空间电压驻波比分别为1.018和1.010,满足工业实验的要求。提出的微型微波暗室双频工作,具有便携、结构简单、性能好的优点,有望在实际工程场景得到广泛应用。
Traditional microwave anechoic chambers suffer from high cost,large building area and immovability,which limits their applications in practical engineering scenarios.Researches about wavelength-scale miniaturized anechoic chambers is crucial for antenna design and performance analysis in fields such as communication and microwave systems.Based on passive artificial media,this paper constructs a conformal and dual-frequency omnidirectional reflectionless absorbing surface with a 0.636 mm thick which can work at 5.1 GHz and 9.0 GHz simultaneously.Furthermore,a semi-closed cylindrical chamber with a diameter of 34.38 cm is constructed based on COMSOL Multiphysics.Full-wave simulation verified the effectiveness of the constructed dual-frequency absorbing units.The spatial voltage standing wave ratios inside the anechoic chamber calculated at two frequencies are 1.018 and 1.010,respectively,which meet the requirements of industrial experiments.This proposed miniaturized anechoic chamber work at dual-frequency,and has the advantages of portability,simple structure and good performance,and is expected to be widely used in practical engineering scenarios.
作者
彭甜
黄武寅
杨利霞
PENG Tian;HUANG Wuyin;YANG Lixia(Information Materials and Intelligent Sensing Laboratory of Anhui Province,Anhui University,Hefei 230601,China)
出处
《微波学报》
北大核心
2025年第4期91-95,共5页
Journal of Microwaves
基金
安徽高校自然科学研究重点项目(2022AH050073)
安徽省优秀科研创新团队(2022AH010002,2022AH010003)。
关键词
无源人工媒质
双频微波暗室
等效媒质理论
passive artificial medium
dual-frequency anechoic chamber
equivalent medium theory
作者简介
彭甜,女,1992年生,博士,讲师。主要研究方向:电磁超材料设计理论及技术应用、电波传播与天线、电磁散射与逆散射、微波成像技术等。E-mail:pengtian@ahu.edu.cn;黄武寅,男,1998年生,硕士生。主要研究方向:电磁超材料特性、天线仿真与设计;杨利霞,男,1975年生,博士,教授,博士生导师。主要研究方向:电磁散射与逆散射、无线通信系统中的电波传播及天线理论与设计、计算电磁学等。
