Hasan Raja Rashidul, Saleque Ahmed Mortuza, Anwar Afrin Binte, Rahman Md Abdur, Tsang Yuen Hong
Department of Electrical and Electronic Engineering, American International University-Bangladesh (AIUB), Dhaka 1229, Bangladesh.
Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong.
ACS Omega. 2022 Aug 4;7(32):28265-28274. doi: 10.1021/acsomega.2c02550. eCollection 2022 Aug 16.
A novel rectangular patch antenna based on multiwall carbon nanotubes has been designed and developed for assisting the initial detection of COVID-19-affected lungs. Due to their highly conductive nature, each nanotube echoes electromagnetic waves in a unique manner, influencing the increase in bandwidth. The proposed antenna operates at 6.63, 7.291, 7.29, and 7.22 GHz with a higher bandwidth classified as an ultrawide band and can be used on a human body phantom model because of its flexibility and decreased radiation qualities. Flame retardant 4 is chosen as a substrate with a uniform thickness of 1.62 mm due to its inexpensive cost and excellent electrical properties. The maximum specific absorption rate of the proposed antenna is obtained as 1.77 W/kg for 10 g of tissues. For testing purposes, a model including all the known features of COVID-19-affected lungs is developed. The designed antenna exhibits excellent performance in free space, normal lungs, and affected lung environments. It might be utilized as a first screening device for COVID-19 patients, especially in resource-constrained areas where traditional medical equipment such as X-ray and computerized tomography scans are scarce.
一种基于多壁碳纳米管的新型矩形贴片天线已被设计并开发出来，用于辅助对感染新冠病毒的肺部进行初步检测。由于其高导电性，每个纳米管以独特的方式反射电磁波，从而影响带宽的增加。所提出的天线在6.63、7.291、7.29和7.22千兆赫频率下工作，具有较高的带宽，属于超宽带，并且因其灵活性和降低的辐射特性可用于人体模型。由于其成本低廉且具有优异的电气性能，选择阻燃剂4作为厚度均匀为1.62毫米的基板。所提出的天线对于10克组织的最大比吸收率为1.77瓦/千克。为了进行测试，开发了一个包含新冠病毒感染肺部所有已知特征的模型。所设计的天线在自由空间、正常肺部和感染肺部环境中均表现出优异的性能。它可作为新冠病毒患者的首个筛查设备，特别是在传统医疗设备如X光和计算机断层扫描稀缺的资源受限地区。
