Zero-Index Metamaterial Superstrates UWB Antenna for Microwave Imaging Detection  

作　　者：Mohd Aminudin Jamlos Nur Amirah Othman Wan Azani Mustafa Mohd Faizal Jamlos Mohamad Nur Khairul Hafizi Rohani 

机构地区：[1]Faculty of Electronic Engineering Technology,Universiti Malaysia Perlis,Pauh Putra Campus,02600,Arau,Malaysia [2]Faculty of Electrical Engineering Technology,Universiti Malaysia Perlis,Pauh Putra Campus,02600,Arau,Malaysia [3]Faculty of Mechanical and Manufacturing Engineering,Universiti Malaysia Pahang,26600,Pekan,Malaysia

出　　处：《Computers, Materials & Continua》2023年第4期277-292,共16页计算机、材料和连续体（英文）

基　　金：the Fundamental Research Grant Scheme (FRGS/1/2018/ICT06/UNIMAP/02/1)of the Ministry of Higher Education of Malaysia.

摘　　要：Metamaterials(MTM)can enhance the properties of microwaves and also exceed some limitations of devices used in technical practice.Note that the antenna is the element for realizing a microwave imaging(MWI)system since it is where signal transmission and absorption occur.Ultra-Wideband(UWB)antenna superstrates with MTM elements to ensure the signal transmitted from the antenna reaches the tumor and is absorbed by the same antenna.The lack of conventional head imaging techniques,for instance,Magnetic Resonance Imaging(MRI)and Computerized Tomography(CT)-scan,has been demonstrated in the paper focusing on the point of failure of these techniques for prompt diagnosis and portable systems.Furthermore,the importance ofMWIhas been addressed elaborately to portray its effectiveness and aptness for a primary tumor diagnosis.Other than that,MTM element designs have been discussed thoroughly based on their performances towards the contributions to the better image resolution of MWI with detailed reasonings.This paper proposes the novel design of a Zeroindex Split RingResonator(SRR)MTMelement superstrate with a UWB antenna implemented in MWI systems for detecting tumor.The novel design of the MTM enables the realization of a high gain of a superstrate UWB antenna with the highest gain of 5.70 dB.Besides that,the MTM imitates the conduct of the zeroreflection phase on the resonance frequency,which does not exist.An antenna with an MTM unit is of a 7×4 and 10×5 Zero-index SRR MTM element that acts as a superstrate plane to the antenna.Apart from that,Rogers(RT5880)substrate material is employed to fabricate the designed MTM unit cell,with the following characteristics:0.51mm thickness,the loss tangent of 0.02,as well as the relative permittivity of 2.2,with Computer Simulation Technology(CST)performing the simulation and design.Both MTM unit cells of 7×4 and 10×5 attained 0°with respect to the reflection phase at the 2.70 GHz frequency band.The first design,MTM Antenna Design 1,consists of a 7×4 MTM unit cell that observ

关 键 词：Zero-index metamaterial(ZIM) ultra-wideband(UWB) microwave imaging(MWI)detection 

分 类 号：TB34[一般工业技术—材料科学与工程]